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CN1330369A - Universal digital audio and video recording and playback device

Publication number

CN1330369A

CN1330369A CN 00118357 CN00118357A CN1330369A CN 1330369 A CN1330369 A CN 1330369A CN 00118357 CN00118357 CN 00118357 CN 00118357 A CN00118357 A CN 00118357A CN 1330369 A CN1330369 A CN 1330369A

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CN

China

Prior art keywords

audio

data

video

digital

encoding

Prior art date

2000-06-15

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• Espacenet
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• 238000000034 method Methods 0.000 claims description 20
• 230000008569 process Effects 0.000 claims description 17
• 238000013500 data storage Methods 0.000 claims description 10
• 238000004088 simulation Methods 0.000 claims 6
• 238000000151 deposition Methods 0.000 claims 3
• 238000006243 chemical reaction Methods 0.000 claims 2
• 238000010586 diagram Methods 0.000 description 14
• 238000005516 engineering process Methods 0.000 description 4
• 230000007246 mechanism Effects 0.000 description 4
• 238000012986 modification Methods 0.000 description 2
• 230000004048 modification Effects 0.000 description 2
• 230000003287 optical effect Effects 0.000 description 2
• 230000008878 coupling Effects 0.000 description 1
• 238000010168 coupling process Methods 0.000 description 1
• 238000005859 coupling reaction Methods 0.000 description 1
• 238000013144 data compression Methods 0.000 description 1
• 238000011982 device technology Methods 0.000 description 1

• Signal Processing For Digital Recording And Reproducing (AREA)

A universal digital video recorder/player includes a video recorder/player engine, a data read/write device, and a software encoder/decoder. The video/audio recording/playing engine has program memory, data memory, A/D and D/A converters and information interface coupled to the digital signal processor. The data read-write device is provided with a read-write circuit respectively coupled with the data recording medium and the data coder/decoder, and the data transmission interface is connected with the video recording and playing engine besides the data coder/decoder. The program storage device is loaded with a system control program and can load video coding/decoding software which is in accordance with the data coding mode according to the command and the special key code data so as to correctly record/play the video information.

本发明涉及一种数字影音录放装置，特别涉及一种具有可依据影音数据格式更新影音编码/解码器(Encoder/Decoder)的软件载入机制(SoftwareLoading Mechanism)的通用型数字影音录放装置。The present invention relates to a digital audio-visual recording and playback device, in particular to a general-purpose digital audio-visual recording and playback device with a software loading mechanism (Software Loading Mechanism) capable of updating an audio-visual encoder/decoder (Encoder/Decoder) according to the audio-visual data format.

随着多媒体技术的进步，可以存储大量影音信息的光盘片等媒体越来越普及，市面上也已有各种影音数据录放装置。而一般的影音数据录放装置皆具有特定的编码/解码器，且依照特定格式对影音信息进行编码，再将其存储于数据记录媒体上；当使用者欲取得影音信息时，必须对存储于数据记录媒体且具有特定格式的数据进行解码，使影音信息重现，才能加以听读，MP3音频播放器(Audio Player)即是其中一例。With the advancement of multimedia technology, media such as optical discs that can store a large amount of audiovisual information are becoming more and more popular, and there are various audiovisual data recording and playback devices on the market. And the general audio-visual data recording and playback device all has specific encoder/decoder, and encodes audio-visual information according to a specific format, and then stores it on the data recording medium; Recording media and data with a specific format are decoded to reproduce audio and video information before they can be listened to and read. MP3 audio player (Audio Player) is an example.

影音信息在存储/读取时需要进行编码/解码，其原因是为了在信号重现时不失真的情况下，使影音信息所需占用的存储空间最小。而且由于数据进行压缩时采用的演算法不同，所以数据编码的方式亦不同，影音信息存储于数据记录媒体的格式亦因编码方式而有所不同；因此欲使原有的影音信号重现，则需使用与编码时采用的演算法互为反向运算的反演算法来解码。亦即，若欲以某一特定数据格式作为存储格式，则必须搭配与此格式相对应的编码/解码演算法。Video and audio information needs to be encoded/decoded when storing/reading. The reason is to minimize the storage space required for audio and video information without distortion when the signal is reproduced. Moreover, due to the different algorithms used for data compression, the data encoding methods are also different, and the format of audio-visual information stored in the data recording medium is also different due to the encoding method; therefore, if the original audio-visual signal is to be reproduced, then It needs to be decoded by using an inversion algorithm which is the reverse operation of the algorithm used in encoding. That is, if a specific data format is to be used as a storage format, an encoding/decoding algorithm corresponding to the format must be used.

参照图1，其所绘示的是公知数字录放音装置的方块示意图。如图1所示，公知数字录放音装置100是由两个主要功能区块构成：其中之一是用以记录影音数据的存储装置102；另一个则是用以对影音数据进行压缩的影音数据编码/解码器104，两者彼此耦接。其中存储装置102可为数字磁带或光盘，而影音数据编码/解码器104则具有特定的数据格式。此外，模拟/数字转换器(A/D Converter)106和数字/模拟转换器(A/D Converter)108分别与编码/解码器104耦接，而控制装置110则分别与存储装置102及编码/解码器104连接，以控制数字录放音装置100的记录/番放动作。Referring to FIG. 1 , what it depicts is a block diagram of a known digital audio recording and playback device. As shown in FIG. 1 , a known digital audio recording and playback device 100 is composed of two main functional blocks: one of them is a storage device 102 for recording audio-visual data; the other is an audio-visual data for compressing audio-visual data. Encoder/decoder 104, the two are coupled to each other. The storage device 102 can be a digital magnetic tape or an optical disc, and the audio-video data encoder/decoder 104 has a specific data format. In addition, an analog/digital converter (A/D Converter) 106 and a digital/analog converter (A/D Converter) 108 are respectively coupled to the encoder/decoder 104, while the control device 110 is respectively connected to the storage device 102 and the encoder/decoder The decoder 104 is connected to control the recording/playback operation of the digital audio recording and playback device 100 .

以数字录放音装置100记录影音信息时，影音信息经模拟/数字转换器106处理成为未编码影音数据112，再由编码/解码器104将其编码成已编码影音数据116，然后将其记录在存储装置102中。以数字录放音装置100播放影音信号时，则是将已编码的影音数据116由存储装置102读出，编码/解码器104将其解码成为未编码影音数据112后，再由数字/模拟转换器108将其转换为模拟影音信号后输出。控制装置110则是由控制指令114以控制存储装置102与编码/解码器104，使数字录放音装置100进行影音信息的记录/播放流程。When recording audio-visual information with the digital recording and playback device 100, the audio-visual information is processed by the analog/digital converter 106 to become unencoded audio-visual data 112, and then encoded by the encoder/decoder 104 into encoded audio-visual data 116, which is then recorded in the storage device 102. When using the digital recording and playback device 100 to play audio-visual signals, the encoded audio-visual data 116 is read out from the storage device 102, and the encoder/decoder 104 decodes it into unencoded audio-visual data 112, and then the digital/analog converter 108 converts it into an analog audio-visual signal and outputs it. The control device 110 controls the storage device 102 and the encoder/decoder 104 by the control instruction 114 to make the digital audio recording and playback device 100 perform the recording/playing process of the video and audio information.

然而，现行可采用的影音编码模式有许多种，欲使影音记录/播放装置与所有的编码模式完全相容，则必须内建各种具有不同编码模式的编码/解码器，在实际中并不经济，数字多功能光盘(Digital Versatile Disc，DVD)影音播放器即是一例。根据数字多功能光盘的影音数据的规格定义，记录于数字多功能光盘上的影音数据可以为AC-3、LPCM(Linear Pulse CodeModulation)、MPEG 1(Moving Picture Engineering Group 1)、以及MPEG 2等编码模式。若数字多功能光盘影音播放器要与所有的编码模式完全相容，则必须配置所有与前述编码模式相对应的各种解码器，但此举不仅会使影音播放器的成本提高，而且获得编码/解码器使用授权所需的费用也会因而增加。However, there are many kinds of audio-visual encoding modes currently available. To make an audio-visual recording/playing device fully compatible with all encoding modes, various encoding/decoders with different encoding modes must be built in, which is not practical in practice. Economical, Digital Versatile Disc (Digital Versatile Disc, DVD) video player is an example. According to the specification definition of audio-visual data of digital versatile discs, audio-visual data recorded on digital versatile discs can be encoded by AC-3, LPCM (Linear Pulse Code Modulation), MPEG 1 (Moving Picture Engineering Group 1), and MPEG 2, etc. model. If the digital versatile disc audio-visual player is to be fully compatible with all encoding modes, all the various decoders corresponding to the aforementioned encoding modes must be configured, but this will not only increase the cost of the audio-visual player, but also obtain encoding /Decoder license fees will also increase accordingly.

因此本发明提供一种通用型数字影音录放装置，具有软件载入机制，并将影音编码/解码器软件化，可依据不同影音数据格式选取适用的编码模式。使用者可选择适当的影音编码模式，并以合理的价格获得可供使用的编码/解码软件，使数字影音录放装置具有所需的影音编码/解码功能，并可以不同的编码/解码模式对影音数据进行记录/播放。此种结构的影音记录/播放装置，不需配置不同编码模式的编码/解码器软件，即可以不同模式对数据进行编码/解码，可简化数字影音录放装置的结构，降低数字影音录放装置的成本。Therefore, the present invention provides a general-purpose digital audio-visual recording and playback device, which has a software loading mechanism, and converts the audio-video encoder/decoder into software, and can select an applicable encoding mode according to different audio-visual data formats. Users can choose an appropriate video and audio encoding mode, and obtain available encoding/decoding software at a reasonable price, so that the digital audio and video recording and playback device has the required video and audio encoding/decoding functions, and can perform video and audio encoding/decoding in different encoding/decoding modes. data for recording/playback. The audio-visual recording/playing device of this kind of structure does not need to be equipped with encoding/decoder software of different encoding modes, that is, data can be encoded/decoded in different modes, which can simplify the structure of the digital audio-visual recording and playback device and reduce the cost of the digital audio-visual recording and playback device .

根据本发明的上述及其他目的，提出一种通用型数字影音录放装置，其中包括通用型影音记录/播放引擎(Universal Recording/Playback Engine)、数据读/写装置(Data Read/Write Device)，以及由加密的编码/解码软件(EncryptedEnc/Dec Software)构成的影音编码/解码器。影音录放引擎中包括数字信号处理装置(Digital Signal Processor，DSP)、只读式(ROM-Type)程序存储装置、闪速式(Flash-Type)程序存储装置、随机存取式(RAM-Type)数据存储装置、模拟/数字转换器、数字/模拟转换器、以及使用者信息界面(User MessageInterface)。而影音录放引擎中的程序存储装置、数据存储装置、模拟/数字和数字/模拟转换器以及信息界面分别与数字信号处理装置耦接。数据读写装置中则包括数据记录媒体(Data Recording Media)、数据编码/解码器(DataEncoder/Decoder)、读写电路(Read/Write Circuit)以及数据传输界面(DataTransmission Interface)，其中读写电路分别与数据记录媒体及数据编码/解码器耦接，而数据传输界面除了与数据编码/解码器连接之外，还与影音录放引擎相连接，且分别与数字信号处理装置及随机存取式数据存储装置耦接。According to the above-mentioned and other objects of the present invention, a kind of universal digital audio-visual recording and playback device is proposed, which includes a universal audio-visual recording/playback engine (Universal Recording/Playback Engine), a data read/write device (Data Read/Write Device), and An audio and video encoder/decoder composed of encrypted encoding/decoding software (EncryptedEnc/Dec Software). The audio and video recording engine includes a digital signal processing device (Digital Signal Processor, DSP), a read-only (ROM-Type) program storage device, a flash-type (Flash-Type) program storage device, a random access (RAM-Type) Data storage device, analog/digital converter, digital/analog converter, and user message interface (User Message Interface). The program storage device, data storage device, analog/digital and digital/analog converters and information interface in the audio-video recording and playback engine are respectively coupled with the digital signal processing device. The data read-write device includes data recording media (Data Recording Media), data encoder/decoder (DataEncoder/Decoder), read-write circuit (Read/Write Circuit) and data transmission interface (DataTransmission Interface). It is coupled with the data recording medium and the data encoder/decoder, and the data transmission interface is not only connected with the data encoder/decoder, but also connected with the audio and video recording and playback engine, and is respectively connected with the digital signal processing device and the random access data storage device coupling.

在影音录放引擎中，只读式程序存储装置内载有系统控制程序，用以控制整个录放音装置的运作，使闪速式程序存储装置依据指令载入适当的编码/解码软件。欲播放影音数据时，存储于记录媒体的数据，经读写电路、数据编码/解码器及数据传输界面，并由编码/解码软件与数字/模拟转换器处理后，使影音信号重现；欲记录影音数据时，模拟影音信号由模拟/数字转换器与编/解码软件处理，并经数据传输界面、数据编码/解码器及读写电路，将影音数据存储于数据记录媒体。In the audio and video recording and playback engine, the read-only program storage device contains a system control program to control the operation of the entire audio recording and playback device, so that the flash program storage device is loaded with appropriate encoding/decoding software according to instructions. When it is desired to play audio-visual data, the data stored in the recording medium is processed by the encoding/decoding software and digital/analog converter through the read-write circuit, data encoding/decoder and data transmission interface, so that the audio-visual signal can be reproduced; When recording audio-visual data, the analog audio-visual signal is processed by the analog/digital converter and encoding/decoding software, and the audio-visual data is stored in the data recording medium through the data transmission interface, data encoding/decoding and reading and writing circuits.

为使本发明的上述和其他目的、特征和优点能更明显易懂，下文特举较佳实施例，并结合附图，作详细说明如下：In order to make the above-mentioned and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are specifically cited below, and in conjunction with the accompanying drawings, the detailed description is as follows:

附图的简单说明：A brief description of the attached drawings:

图1所示为公知数字录放音装置的方块示意图；Fig. 1 shows the schematic block diagram of known digital recording and playback device;

图2所示为依照本发明的较佳实施例，一种通用型数字影音录放装置的方块示意图；Figure 2 is a schematic block diagram of a general-purpose digital video recording and playback device according to a preferred embodiment of the present invention;

图3所示为依照本发明的较佳实施例，一种通用型数字影音录放装置，其载入影音编码/解码软件的流程示意图；Fig. 3 shows according to the preferred embodiment of the present invention, a kind of universal digital audio-visual recording and playback device, its schematic flow chart of loading audio-visual encoding/decoding software;

图4所示为依照本发明的较佳实施例，一种通用型数字影音录放装置，其移除影音编码/解码软件的流程示意图；Figure 4 shows a schematic flow chart of removing the video encoding/decoding software for a general-purpose digital audio and video recording and playback device according to a preferred embodiment of the present invention;

图5所示为依照本发明的较佳实施例，一种通用型数字影音录放装置，其记录影音数据的流程示意图；Fig. 5 shows according to the preferred embodiment of the present invention, a kind of general-purpose digital audio-visual recording and playback device, its flow chart diagram of recording audio-visual data;

图6所示为依照本发明的较佳实施例，一种通用型数字影音录放装置，其播放影音数据的流程示意图；Fig. 6 is according to the preferred embodiment of the present invention, a kind of general-purpose digital audio-visual recording and playback device, and its schematic flow chart of playing audio-visual data;

图7所示为依照本发明的较佳实施例，一种通用型数字影音录放装置，其影音编码/解码软件的加密流程示意图；以及Fig. 7 shows according to the preferred embodiment of the present invention, a kind of universal digital audio-visual recording and playback device, its audio-visual encoding/decoding software encryption flow schematic diagram; And

图8所示为依照本发明的较佳实施例，一种通用型数字影音录放装置，其影音编码/解码软件的解密流程示意图。FIG. 8 is a schematic diagram of the decryption process of the audio/video encoding/decoding software of a general-purpose digital audio/video recording and playback device according to a preferred embodiment of the present invention.

参照图2，其所示的是依照本发明的较佳实施例，一种通用型数字影音录放装置，其结构的方块示意图。如图2所示，本发明的通用型数字影音录放装置200，其结构包括两个主要的功能区块以及软件编码/解码器，其中一个功能区块为通用型影音记录/播放引擎202，另一个功能区块则是数据读/写装置204，此二者彼此耦接，其组成元件将于后详细说明。而经加密的影音编码/解码软件222，可由方块示意图中功能区块内的系统控制程序(SystemProgram)220加以控制及解密。Referring to FIG. 2 , it shows a schematic block diagram of a general-purpose digital video recording and playback device according to a preferred embodiment of the present invention. As shown in Figure 2, the general-purpose digital audio-visual recording and playback device 200 of the present invention includes two main functional blocks and a software encoder/decoder, wherein one functional block is a general-purpose audio-visual recording/playback engine 202, and the other A functional block is the data read/write device 204, the two are coupled to each other, and its components will be described in detail later. The encrypted audio/video encoding/decoding software 222 can be controlled and decrypted by the system control program (System Program) 220 in the functional block in the block diagram.

如图2所示，通用型影音记录/播放引擎202中包括高速数字信号处理器210、只读式程序存储装置214、闪速式程序存储装置216、随机存取式数据存储装置218、模拟/数字转换器206、数字/模拟转换器208、以及使用者信息界面212。其中模拟/数字转换器206、数字/模拟转换器208、使用者信息界面212、只读式程序存储装置214、闪速式程序存储装置216与随机存取式数据存储装置218，是分别与数字信号处理器210耦接。As shown in Figure 2, the general-purpose video recording/playing engine 202 includes a high-speed digital signal processor 210, a read-only program storage device 214, a flash program storage device 216, a random access data storage device 218, an analog/ A digital converter 206 , a digital/analog converter 208 , and a user information interface 212 . Wherein the analog/digital converter 206, the digital/analog converter 208, the user information interface 212, the read-only type program storage device 214, the flash type program storage device 216 and the random access type data storage device 218 are respectively and digital A signal processor 210 is coupled.

而图2中的数据读/写装置204则包括数据记录媒体230、读/写电路228、数据编码/解码器226、以及数据传输界面224。其中读/写电路228分别与数据编码/解码器226及数据记录媒体230耦接，而数据传输界面224除了与数据编码/解码器226耦接之外，还与通用型影音记录/播放引擎202相连接，并分别与其中的数字信号处理器210及随机存取式数据存储装置218互相耦接。The data read/write device 204 in FIG. 2 includes a data recording medium 230 , a read/write circuit 228 , a data encoder/decoder 226 , and a data transmission interface 224 . Wherein the read/write circuit 228 is coupled with the data encoder/decoder 226 and the data recording medium 230 respectively, and the data transmission interface 224 is not only coupled with the data encoder/decoder 226, but also with the general-purpose audio-visual recording/playback engine 202 are connected, and are respectively coupled with the digital signal processor 210 and the random access data storage device 218 therein.

在通用型影音记录/播放引擎202中，只读式程序存储装置214内存储有系统控制程序220软件，其功能包括下列所述：其中之一是依据内建的关键码数据(Key Data)对加密的影音编码/解码软件222解密，而此一关键码数据是对应于对影音编码/解码软件222加密时所使用的关键码数据；其中之二是用以载入与移除影音编码/解码软件222；而其中之三是用以启始影音编码/解码软件222的运作；其中之四则是经由使用者信息界面212接收使用者输入的信息，并掌控通用型数字影音录放装置的记录/播放功能。In the general-purpose audio-visual recording/playing engine 202, the system control program 220 software is stored in the read-only program storage device 214, and its functions include the following: one of which is based on the built-in key code data (Key Data) pair Encrypted audio-visual encoding/decoding software 222 decryption, and this key code data is corresponding to the key code data used when encrypting audio-visual encoding/decoding software 222; Two of them are used for loading and removing audio-visual encoding/decoding Software 222; and three of them are used to start the operation of the audio-visual encoding/decoding software 222; the fourth of them is to receive the information input by the user through the user information interface 212, and control the recording/playing of the general-purpose digital audio-visual recording and playback device Function.

而通用型影音记录/播放引擎202中的闪速式程序存储装置216，可以存储由数据记录媒体230下载的影音编码/解码软件222。闪速式程序存储装置216可载入不同的影音编码/解码软件222，因而可以不同的编码/解码模式对影音数据进行编码/解码，可视为一影音数据编码/解码器。当闪速式程序存储装置216所载入的程序为影音编码软件时，即成为影音编码器；若闪速式程序记录装置216所载入的程序为影音解码软件时，则成为影音解码器。因此，仅需将适当的影音编码/解码软件222载入闪速式程序存储装置中，即可对具有不同编码模式的影音数据进行处理。The flash program storage device 216 in the general-purpose video recording/playing engine 202 can store the video encoding/decoding software 222 downloaded from the data recording medium 230 . The flash program storage device 216 can be loaded with different video/audio encoding/decoding software 222, so that video/audio data can be encoded/decoded in different encoding/decoding modes, which can be regarded as an audio/video data encoding/decoding device. When the program loaded in the flash program storage device 216 is video and audio encoding software, it becomes an audio and video encoder; if the program loaded in the flash program recording device 216 is audio and video decoding software, it becomes an audio and video decoder. Therefore, it is only necessary to load the appropriate audio/video encoding/decoding software 222 into the flash program storage device to process audio/video data with different encoding modes.

此外，通用型影音记录/播放引擎202中的随机存取式数据存储装置218，可以作为欲进行编码/解码的数据的寄存缓冲区，但欲编码/解码的数据亦可以直接传送至数字信号处理器210处理。使用者藉由操作使用者控制器(未显示于图中)以发出使用者操作信息，经由通用型影音记录/播放引擎202中的使用者信息界面212，通用型数字影音录放装置200可接收来自使用者控制器的使用者操作信息，其中使用者控制器包括遥控器(Remote Controller)等。In addition, the random access data storage device 218 in the general-purpose audio-visual recording/playing engine 202 can be used as a register buffer for the data to be encoded/decoded, but the data to be encoded/decoded can also be directly sent to the digital signal processing Processor 210. The user sends user operation information by operating the user controller (not shown in the figure), and the general-purpose digital audio-visual recording and playback device 200 can receive information from the user information interface 212 in the general-purpose audio-visual recording/playing engine 202 User operation information of the user controller, wherein the user controller includes a remote controller (Remote Controller) and the like.

在通用型影音记录/播放引擎202中，模拟/数字转换器206的主要功能包括：将所接收的模拟影音信号232转换成未编码数字影音信号234，以供数字信号处理器210进行后续编码程序，将未编码数字影音信号234处理成已编码数字影音信号236；而通用型影音记录/播放引擎202中的数字/模拟转换器208，其主要功能则包括：将由数字信号处理器210处理后的数字影音信号234转换为模拟影音信号232，并将此模拟影音信号232输出至扬声装置(未显示于图中)。In the general-purpose video recording/playing engine 202, the main functions of the analog/digital converter 206 include: converting the received analog video signal 232 into an unencoded digital video signal 234 for the digital signal processor 210 to perform subsequent encoding procedures , process the unencoded digital audio-visual signal 234 into encoded digital audio-visual signal 236; The digital video signal 234 is converted into an analog video signal 232, and the analog video signal 232 is output to a speaker device (not shown in the figure).

在图2的数据读/写装置204中，数据记录媒体230可用以记录数字数据，而这些数字数据则包括通道数据(Channel Data)238与影音编码/解码软件222等。从通用型影音记录/播放引擎202输出的已编码数字影音信号236，经数据传输界面224输入数据读/写装置204，由数据编码/解码器226对数字影音数据236进行再次编码，产生已编码通道数据238，再由读/写电路228将已编码通道数据238写入数据记录媒体230。而存储于数据记录媒体230中的已编码通道数据238，经读/写电路228读出后，再由数据编码/解码器226处理，将其解码为数字信号处理器210所能辨识与处理的数字影音数据236。In the data reading/writing device 204 of FIG. 2 , the data recording medium 230 can be used to record digital data, and these digital data include channel data (Channel Data) 238 and audio-visual encoding/decoding software 222 and so on. The encoded digital audio-visual signal 236 output from the general-purpose audio-visual recording/playing engine 202 is input to the data reading/writing device 204 through the data transmission interface 224, and the digital audio-visual data 236 is re-encoded by the data encoding/decoder 226 to generate encoded channel data 238 , and then the read/write circuit 228 writes the encoded channel data 238 into the data recording medium 230 . The coded channel data 238 stored in the data recording medium 230 is read out by the read/write circuit 228, and then processed by the data coder/decoder 226, which is decoded into what the digital signal processor 210 can recognize and process. Digital audiovisual data 236 .

由数据编码/解码器226产生的已编码通道数据238，可经读/写电路228将其写入数据记录媒体230；而存储于数据记录媒体230中的记录图样，亦可经由读/写电路228将其读出并转换成通道数据238。数据读/写装置204中的数据传输界面224，与通用型影音记录/播放引擎202相耦接，其功能则包括于数据读/写装置204与通用型影音记录/播放引擎202之间用传输数字数据。The coded channel data 238 produced by the data encoder/decoder 226 can be written into the data recording medium 230 through the read/write circuit 228; 228 reads it out and converts it into channel data 238 . The data transmission interface 224 in the data reading/writing device 204 is coupled with the general-purpose audio-visual recording/playing engine 202, and its function then includes using transmission between the data reading/writing device 204 and the general-purpose audio-visual recording/playing engine 202. digital data.

  存储于数据记录媒体230中的影音编码/解码软件，可以具有任何形式的编码模式，但是此一软件的编码模式必须与存储于数据记录媒体230中的影音数据的编码模式相容。此外，对于数据记录媒体230所存储的影音编码/解码软件，还可以使用特定的关键码数据对影音编码/解码软件进行加密/解密，而且此一关键码数据与系统控制程序220中所内建的解密器(Descrambler)的关键码数据相对应，使得具有此特殊关键码数据的系统控制程序220可以正确无误地进行解密。与存储在数据记录媒体230中的影音数据编码模式相符的影音编码/解码软件222，经由正确解密后被载入闪速式程序存储装置216，使通用型影音记录/播放引擎202可对影音数据进行编码/解码。存储于数据记录媒体230中加密的影音编码/解码软件，可由图7所示的流程而产生，其步骤将于后详述。The audio-video encoding/decoding software stored in the data recording medium 230 can have any encoding mode, but the encoding mode of this software must be compatible with the encoding mode of the audio-visual data stored in the data recording medium 230. In addition, for the audio-visual encoding/decoding software stored in the data recording medium 230, specific key code data can also be used to encrypt/decrypt the video-audio encoding/decoding software, and this key code data is the same as that built in the system control program 220. Corresponding to the key code data of the descrambler (Descrambler), so that the system control program 220 with this special key code data can correctly decrypt. The audio-visual encoding/decoding software 222 that matches the encoding mode of the audio-visual data stored in the data recording medium 230 is loaded into the flash program storage device 216 after being correctly decrypted, so that the general-purpose audio-visual recording/playing engine 202 can process the audio-visual data Encode/decode. The encrypted audio/video encoding/decoding software stored in the data recording medium 230 can be generated by the process shown in FIG. 7 , and the steps will be described in detail later.

  本发明的通用型数字影音录放装置200，其结构包括两个主要的功能方块及软件编码/解码器等，具有编码/解码软件载入、编码/解码软件移除、记录及播放影音数据等功能，其流程将以示意图分别说明如下。The general-purpose digital audio-visual recording and playback device 200 of the present invention includes two main functional blocks and a software encoder/decoder, etc., and has the functions of loading encoding/decoding software, removing encoding/decoding software, recording and playing audio-visual data, etc. , and the flow chart will be described as follows.

  图3所示的是依照本发明的较佳实施例，一种通用型数字影音录放装置，其载入影音编码/解码软件的操作流程的示意图。参照图3并结合图2所示，首先进行步骤302，由通用型影音记录/播放引擎202的使用者信息界面212接受使用者指示下载影音编码/解码软件222的命令；其次进行步骤304，由通用型影音记录/播放引擎202控制数据读/写装置204，使其由载有影音编码/解码软件222的存储媒体读取已定义的加密影音编码/解码文件。Fig. 3 shows a schematic diagram of the operation flow of loading video and audio encoding/decoding software into a general-purpose digital video and audio recording and playback device according to a preferred embodiment of the present invention. Referring to FIG. 3 and shown in FIG. 2 , at first step 302 is performed, and the user information interface 212 of the general-purpose audio-visual recording/playing engine 202 accepts the user's instruction to download the video-audio encoding/decoding software 222; secondly, step 304 is performed, by The general-purpose video recording/playing engine 202 controls the data read/write device 204 to read the defined encrypted audio/video encoding/decoding file from the storage medium loaded with the audio/video encoding/decoding software 222 .

接着再进行图3中的步骤306，由数据读/写装置204载入加密的影音编码/解码文件，并将影音编码/解码文件传送至通用型影音记录/播放引擎202；然后进行步骤308，由通用型影音记录/播放引擎202使用内建的关键码数据对加密的影音编码/解码文件进行解密，并将解密的影音编码/解码软件222载入闪速式程序存储装置216，以完成通用型数字影音录放装置对影音编码/解码软件的载入流程。对存储在数据记录媒体230的加密影音编码/解码软件进行解密，其解密的流程如图8所示，将于后详述。Then proceed to step 306 in FIG. 3 , load the encrypted audio-visual encoding/decoding file by the data read/write device 204, and transmit the audio-visual encoding/decoding file to the general-purpose audio-visual recording/playing engine 202; then proceed to step 308, The general-purpose audio-visual recording/playing engine 202 uses the built-in key code data to decrypt the encrypted audio-visual encoding/decoding file, and loads the decrypted audio-visual encoding/decoding software 222 into the flash program storage device 216 to complete general-purpose The loading process of audio-visual encoding/decoding software by a type digital audio-visual recording and playback device. Decrypt the encrypted audio/video encoding/decoding software stored in the data recording medium 230. The decryption process is shown in FIG. 8 and will be described in detail later.

图4所示的是依照本发明的较佳实施例，一种通用型数字影音录放装置，其移除影音编码/解码软件的操作流程的示意图。参照图4并结合图2所示，首先进行步骤402，由通用型影音记录/播放引擎202的使用者信息界面212接受使用者指示移除影音编码/解码软件222的命令；其次进行步骤404，通用型影音记录/播放引擎202控制移除闪速式程序存储装置216中所存储的影音编码/解码软件，以完成通用型数字影音录放装置对已载入的影音编码/解码软件的移除流程。FIG. 4 is a schematic diagram of a general-purpose digital audio-video recording and playback device according to a preferred embodiment of the present invention, which removes the operation flow of the audio-video encoding/decoding software. Referring to FIG. 4 and shown in FIG. 2 , at first step 402 is performed, and the user information interface 212 of the general-purpose audio-visual recording/playing engine 202 accepts the user's instruction to remove the audio-visual encoding/decoding software 222; secondly, step 404 is performed, The general-purpose audio-visual recording/playing engine 202 controls and removes the audio-visual encoding/decoding software stored in the flash program storage device 216, so as to complete the removal process of the loaded audio-visual encoding/decoding software by the general-purpose digital audio-visual recording and playback device .

图5所示的是依照本发明的较佳实施例，一种通用型数字影音录放装置，其记录影音数据的操作流程的示意图。参照图5并结合图2所示，首先进行步骤502，由通用型影音记录/播放引擎202的使用者信息界面212接受使用者指示记录影音信号的命令，若无特别指定，则使用预设的影音编码模式；接着进行步骤504，由通用型影音记录/播放引擎202启始内建于编码软件的编码功能。FIG. 5 is a schematic diagram of an operation flow for recording audio and video data of a general-purpose digital audio and video recording and playback device according to a preferred embodiment of the present invention. Referring to FIG. 5 and shown in FIG. 2, step 502 is first performed, and the user information interface 212 of the general-purpose audio-visual recording/playing engine 202 accepts an order from the user to instruct recording audio-visual signals. If there is no special designation, the preset Video and audio coding mode; then proceed to step 504, the general audio and video recording/playing engine 202 starts the coding function built in the coding software.

再进行图5中的步骤506，模拟影音信号232经模拟/数字转换器206转换为数字影音信号234后，再由编码软件使用预设的编码模式将未编码数字影音信号234编码成已编码影音数据236；其次进行步骤508，由通用型影音记录/播放引擎202通过数据传输界面224，将已编码影音数据236传输至数据读/写装置204；然后进行步骤510，数据读/写装置204经由数据传输界面224接收来自通用型影音记录/播放引擎202的已编码影音数据236，且以数据编码/解码器226将其转换为通道数据238，并将通道数据238写入数据记录媒体230中，以完成通用型数字影音录放装置记录影音数据的流程。Then proceed to step 506 in FIG. 5 , after the analog audio-visual signal 232 is converted into a digital audio-visual signal 234 by the analog/digital converter 206, the encoding software uses a preset encoding mode to encode the unencoded digital audio-visual signal 234 into an encoded audio-visual signal data 236; then proceed to step 508, the encoded audio-visual data 236 is transmitted to the data read/write device 204 by the general-purpose audio-visual recording/playback engine 202 through the data transmission interface 224; then proceed to step 510, the data read/write device 204 passes The data transmission interface 224 receives the encoded audio-visual data 236 from the general-purpose audio-visual recording/playing engine 202, and converts it into channel data 238 with the data encoder/decoder 226, and writes the channel data 238 in the data recording medium 230, In order to complete the process of recording audio-visual data by the general-purpose digital audio-visual recording and playback device.

图6所示的是依照本发明的较佳实施例，一种通用型数字影音录放装置，其播放影音数据的操作流程的示意图。参照图6并结合图2所示，首先进行步骤602，由通用型影音记录/播放引擎202的使用者信息界面212接受使用者指示播放存储于数据记录媒体230上的影音信号的命令。FIG. 6 is a schematic diagram of an operation flow for playing video and audio data of a general-purpose digital video and audio recording and playback device according to a preferred embodiment of the present invention. Referring to FIG. 6 and shown in FIG. 2 , step 602 is first performed, and the user information interface 212 of the universal video recording/playing engine 202 accepts a user instruction to play video and video signals stored on the data recording medium 230 .

接着进行图6中的步骤604，由通用型影音记录/播放引擎202核对存储于数据记录媒体230上的影音信号的编码模式；若此编码模式与影音解码软件的编码模式不相容，则进行步骤612，停止播放功能并要求使用者重新载入适用的影音解码软件；若此编码模式与影音解码软件的编码模式相容，则进行步骤606，由通用型影音记录/播放引擎202要求数据读/写装置204读取已编码影音数据236，并启始影音解码功能。Then carry out step 604 in Fig. 6, check the encoding mode of the audio-visual signal stored on the data recording medium 230 by the general-purpose audio-visual recording/playing engine 202; If this encoding mode is incompatible with the encoding mode of the audio-visual decoding software, then proceed Step 612, stop the playback function and require the user to reload the applicable audio-visual decoding software; if the encoding mode is compatible with the encoding mode of the audio-visual decoding software, then proceed to step 606, and the general-purpose audio-visual recording/playing engine 202 requires the data to be read The /writing device 204 reads the encoded video and audio data 236 and starts the audio and video decoding function.

在通用型影音记录/播放引擎202启始影音解码功能之后，继续进行图6中的步骤608，由数字信号处理器210以其影音解码功能，将来自数据读/写装置204的已编码影音数据236解码为未编码数字影音信号234；然后进行步骤610，由通用型影音记录/播放引擎202将未编码数字影音信号234传输至数字/模拟转换器208，并将其转换为模拟影音信号232输出至扬声装置。After the general-purpose audio-visual recording/playing engine 202 starts the audio-visual decoding function, proceed to step 608 in FIG. 236 is decoded into an unencoded digital audio-visual signal 234; then proceed to step 610, the unencoded digital audio-visual signal 234 is transmitted to the digital/analog converter 208 by the general-purpose audio-visual recording/playback engine 202, and it is converted into an analog audio-visual signal 232 for output to the speaker unit.

图7所示的是依照本发明的较佳实施例，一种通用型数字影音录放装置，其影音编码/解码软件的加密流程的示意图。参照图7并结合图2所示，对影音编码/解码软件加密时，首先进行步骤702，取得适用的影音编码/解码软件；其次进行步骤704，由系统控制程序220中内建的数据保密器以特殊关键码数据对影音编码/解码软件进行加密；然后进行步骤706，将经过加密的影音编码/解码软件存储于数据记录媒体230中，以完成影音编码/解码软件的加密流程。FIG. 7 is a schematic diagram of the encryption process of the audio/video encoding/decoding software of a general-purpose digital audio/video recording and playback device according to a preferred embodiment of the present invention. Referring to Fig. 7 and shown in Fig. 2, when the audio-visual encoding/decoding software is encrypted, at first carry out step 702, obtain applicable audio-visual encoding/decoding software; Encrypt the video/audio encoding/decoding software with special key data; then go to step 706, store the encrypted video/audio encoding/decoding software in the data recording medium 230 to complete the encryption process of the video/audio encoding/decoding software.

图8所示的是依照本发明的较佳实施例，一种通用型数字影音录放装置，其影音编码/解码软件的解密流程的示意图。参照图8并结合图2所示，对已加密的影音编码/解码软件解密时，首先进行步骤802，由数据记录媒体230载入存储于其中且已加密的影音编码/解码软件；其次进行步骤804，由内建于系统控制程序220的解密器以特殊关键码数据对已加密的影音编码/解码软件进行解密；然后进行步骤706，将经过解密的影音编码/解码软件222载入至闪速式程序存储装置216中，以完成影音编码/解码软件的解密流程。FIG. 8 is a schematic diagram of the decryption process of the audio/video encoding/decoding software of a general-purpose digital audio/video recording and playback device according to a preferred embodiment of the present invention. With reference to Fig. 8 and shown in conjunction with Fig. 2, when the encrypted audio-visual encoding/decoding software is decrypted, step 802 is first carried out, and the encrypted audio-visual encoding/decoding software stored therein and encrypted is loaded by the data recording medium 230; secondly, step 802 is performed. 804, the decryptor built in the system control program 220 decrypts the encrypted audio-visual encoding/decoding software with special key data; then proceed to step 706, load the decrypted audio-visual encoding/decoding software 222 into the flash program storage device 216 to complete the decryption process of video and audio encoding/decoding software.

由上述实施例可知，本发明的通用型数字影音录放装置结合了先进的数字信号处理技术、影音编码/解码技术、数据加密/解密技术、以及数据读/写装置技术等，具有软件载入机制，并将影音编码/解码器软件化。使用者可依据需求选用适当的影音编码模式而不需额外的花费，使数字影音录放装置具有所需的影音编码/解码功能，并且可以不同的编码/解码模式对影音数据进行编码、解码、记录、播放，而不需配置不同编码模式的编码/解码器软件，可简化数字影音录放装置的结构，并降低数字影音录放装置所需成本。As can be seen from the above-mentioned embodiments, the general-purpose digital audio-visual recording and playback device of the present invention combines advanced digital signal processing technology, audio-visual encoding/decoding technology, data encryption/decryption technology, and data reading/writing device technology, etc., and has a software loading mechanism , and softwareize the audio/video coder/decoder. Users can choose the appropriate audio-visual encoding mode according to their needs without additional costs, so that the digital audio-visual recording and playback device has the required audio-visual encoding/decoding functions, and can encode, decode, and record audio-visual data in different encoding/decoding modes , Play, without the need to configure coder/decoder software with different coding modes, the structure of the digital audio-visual recording and playback device can be simplified, and the cost of the digital audio-visual recording and playback device can be reduced.

此外，应用本发明的通用型数字影音录放装置，在通用型影音记录/播放引擎中的只读式程序存储装置载有系统控制程序，可以根据从使用者信息界面所接受的命令，并依照内建的特殊关键码数据，对数据编码模式相符的影音编码/解码软件进行解密，并将其载入至闪速式程序存储装置，使数字影音录放装置具有所需的影音编码/解码功能，并可正确无误地记录/播放影音信息。In addition, the general-purpose digital audio-visual recording and playback device applying the present invention, the read-only program storage device in the general-purpose audio-visual recording/playing engine is loaded with a system control program, which can be used according to the command received from the user information interface and according to the internal Decrypt the video and audio encoding/decoding software that conforms to the data encoding mode, and load it into the flash program storage device, so that the digital audio and video recording and playback device has the required audio and video encoding/decoding function, and Audio and video information can be recorded/played correctly.

虽然本发明已以较佳实施例揭露如上，然其并非用以限定本发明，任何本领域的技术人员，在不脱离本发明的精神和范围内，当可作各种的更动与润饰，因此本发明的保护范围应当以权利要求范围所界定的为准。Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make various modifications and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the claims.

1. universal digital video-audio recorder-playback, comprising:

One audio-visual record/playback engine in order to record/broadcast one simulation video-audio signal, also comprises in this audio-visual record/playback engine:

One digital signal processor is in order to handle and output signal;

One program storage device couples with this digital signal processor, in order to store a system control program and an audio-visual coding/decoding software;

One digital/analog converter, couple with this digital signal processor, in order to receive this simulation video-audio signal, and should simulate video-audio signal and be converted to a digital audio-video signal and export this digital signal processor to, be encoding video-audio data outputs by this digital signal processor with this digital audio-video signal encoding again;

One analog/digital converter couples with this digital signal processor, in order to receiving by these encoding video-audio data this digital audio-video signal through this digital signal processor processes output, and this digital audio-video conversion of signals is exported for this simulation video-audio signal;

One user's information interface couples with this digital signal processor, in order to receive user's order, cooperates this system control program and this audio-visual coding/decoding software in this program storage device to control this digital signal processor; And

One data read/write device couples with this audio-visual record/playback engine, in order to record data, also comprises in this data read-write equipment:

One data transmission interface couples with this digital signal processor, in order to transmit this encoding video-audio data;

One data encoding/decoding device couples with this data transmission interface, in order to receiving and to transmit this encoding video-audio data, and is coding pass data outputs with this encoding video-audio digital coding;

One read/write circuit couples with this data encoding/decoding device, in order to transmit this coding pass data;

One data medium, couple with this read/write circuit, in order to receive and these coding pass data of storage, this read/write circuit can be read these coding pass data from this data medium, and transfer to this data encoding/decoding device, is these encoding video-audio data by this data encoding/decoding device with this coding pass data decode, these encoding video-audio data transfer to this digital signal processor through this data transmission interface again, these encoding video-audio data produce this digital audio-video signal output after this digital signal processor processes, this digital audio-video signal is received and be converted to this simulation video-audio signal output by this digital/analog converter.

2. universal digital video-audio recorder-playback as claimed in claim 1, wherein this program storage device comprises:

One read-only program storage device couples with this digital signal processor, in order to store this system control program; And

One flash formula program storage device, couple with this digital signal processor, in order to this audio-visual coding/decoding software of storage, this system control program can key data be decrypted this audio-visual coding/decoding software of having encrypted, and can be with this audio-visual coding/decoding software download to this flash formula program storage device, can also be with this audio-visual coding/decoding software by removing in the flash formula program storage device.

3. universal digital video-audio recorder-playback as claimed in claim 1, wherein also comprise and have a random access formula data storage device, couple with this digital signal processor and this data transmission interface respectively, in order to transmitting this encoding video-audio data, and as the buffer zone of depositing of these encoding video-audio data.

4. universal digital video-audio pen recorder, comprising:

One analog/digital converter in order to receiving a simulation video-audio signal, and should be simulated video-audio signal and is converted to a digital audio-video signal and exports;

One digital signal processor couples receiving this digital audio-video signal with this analog/digital converter, and will be after this digital audio-video signal encoding output one encoding video-audio data;

One program storage device couples with this digital signal processor, in order to store a system control program and an audio-visual encoding software;

One user's information interface couples with this digital signal processor, in order to receive user's order, cooperates this system control program in this program storage device to control the action of this digital signal processor;

One data transmission interface couples with this digital signal processor, in order to receive and to transmit this encoding video-audio data;

One data encoding/decoding device couples with this data transmission interface, in order to receiving this encoding video-audio data, and is coding pass data outputs with this encoding video-audio digital coding;

One read/write circuit couples with this data encoding/decoding device, in order to transmit this coding pass data; And

One data medium couples with this read/write circuit, in order to receive and these coding pass data of storage.

5. universal digital video-audio pen recorder as claimed in claim 4, wherein this program storage device comprises:

One read-only program storage device couples with this digital signal processor, in order to store this system control program; And

One flash formula program storage device, couple with this digital signal processor, in order to this audio-visual encoding software of storage, this system control program can key data be decrypted this audio-visual encoding software of having encrypted, and this audio-visual encoding software can be downloaded to this flash formula program storage device, can also be with this audio-visual encoding software by removing in the flash formula program storage device.

6. universal digital video-audio pen recorder as claimed in claim 4, wherein also comprise and have a random access formula data storage device, couple with this digital signal processor and this data transmission interface respectively, in order to transmitting this encoding video-audio data, and as the buffer zone of depositing of these encoding video-audio data.

7. universal digital video-audio playing device, comprising:

One data medium is in order to store coding pass data;

One read/write circuit couples with this data medium, in order to read and to export this coding pass data;

One data encoding/decoding device couples with this read/write circuit, in order to receiving this coding pass data, and is encoding video-audio data outputs with this coding pass data decode;

One data transmission interface couples with this data encoding/decoding device, in order to receive and to transmit this encoding video-audio data;

One digital signal processor couples receiving this encoding video-audio data with this data transmission interface, and will be after this encoding video-audio data processing output one digital audio-video signal;

One program storage device couples with this digital signal processor, in order to store a system control program and an audio-visual decoding software;

One user's information interface couples with this digital signal processor, in order to receive user's order, cooperates this system control program in this program storage device to control the action of this digital signal processor; And

One digital/analog converter couples with this digital signal processor, in order to receiving this digital audio-video signal, and is a simulation video-audio signal output with this digital audio-video conversion of signals.

8. universal digital video-audio playing device as claimed in claim 7, wherein this program storage device comprises:

One read-only program storage device couples with this digital signal processor, in order to store this system control program; And

One flash formula program storage device, couple with this digital signal processor, in order to this audio-visual decoding software of storage, this system control program can key data be decrypted this audio-visual decoding software of having encrypted, and this audio-visual decoding software can be downloaded to this flash formula program storage device, can also be with this audio-visual decoding software by removing in the flash formula program storage device.

9. universal digital video-audio playing device as claimed in claim 7, wherein also comprise and have a random access formula data storage device, couple with this digital signal processor and this data transmission interface respectively, in order to transmitting this encoding video-audio data, and as the buffer zone of depositing of these encoding video-audio data.

• 2000
  • 2000-06-15 CN CN 00118357 patent/CN1130715C/en not_active Expired - Fee Related

Granted publication date: 20031210

Termination date: 20190615

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