CN1330369A - Universal digital video-audio recorder-playback - Google Patents
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- 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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Abstract
A universal digital video-audio recorder-playback is composed of the video-audio recording-reproducing engine, consisting of program memory, data memory, A/D converter, D/A converter and information interface, the data reader/writer containing read/write circuit, and the encoder/decoder software loaded under the control of system control program in program memory. The program memory device has system control program and can load in video-audio coding/decoding software so as to correctly record/reproduce video-audio information.
Description
The present invention relates to a kind of digital video-audio recorder-playback, particularly a kind of have a universal digital video-audio recorder-playback that can be written into mechanism (SoftwareLoading Mechanism) according to the software that the video-audio data form upgrades audio-visual coder/decoder (Encoder/Decoder).
Along with the progress of multimedia technology, the medium such as discs that can store a large amount of audio and video informations are more and more universal, also existing on the market various video-audio data recording/displaying devices.And general video-audio data recording/displaying device all has specific coder/decoder, and according to specific format audio and video information is encoded, and it is stored on the data medium again; When the user desires to obtain audio and video information, must decode to the data that are stored in data medium and have a specific format, audio and video information is reappeared, could be listened and be read, MP3 audio player (Audio Player) promptly is an example wherein.
Audio and video information storing/need carry out coding/decoding when reading, and its reason is under the distortionless situation when the signal reproduction, makes the required storage space minimum that takies of audio and video information.And because the algorithm difference that data adopt when compressing, so the mode of digital coding is also different, it is also different because of coded system that audio and video information is stored in the form of data medium; Therefore desire to make original video-audio signal to reappear, the algorithm that adopts in the time of then need using and the encode inversion algorithm of reverse computing is each other decoded.That is, if desire with a certain format as storage format the corresponding coding/decoding algorithm of form therewith of then must arranging in pairs or groups.
With reference to Fig. 1, what it illustrated is the block schematic diagram of known digital recorder mixer.As shown in Figure 1, known digital recorder mixer 100 is to be made of two major function blocks: one of them is the memory storage 102 in order to the record video-audio data; Another then is that both are coupled to each other in order to the video-audio data coder/decoder 104 that video-audio data is compressed.Wherein memory storage 102 can be numerical tape or CD, and video-audio data coder/decoder 104 then has specific data layout.In addition, analog/digital converter (A/D Converter) 106 and digital/analog converter (A/D Converter) 108 couple with coder/decoder 104 respectively, control device 110 then is connected with memory storage 102 and coder/decoder 104 respectively, with the record of control figure recording and playing device 100/kind put action.
During with digital recorder mixer 100 record audio and video informations, audio and video information is treated as not encoding video-audio data 112 through analog/digital converter 106, by coder/decoder 104 it is encoded into encoding video-audio data 116 again, then it is recorded in the memory storage 102.During with digital recorder mixer 100 playing audio/video signals, then be that the video-audio data 116 of will encode is read by memory storage 102, coder/decoder 104 is decoded into to after the encoding video-audio data 112 not, exports after being converted into the simulation video-audio signal by digital/analog converter 108 again.110 of control device be by steering order 114 with control store device 102 and coder/decoder 104, make digital recorder mixer 100 carry out the record/playing flow of audio and video information.
Yet, existing adoptable audio-visual coding mode has many kinds, desire to make audio-visual record/play-back device and all coding mode compatible fully, then must built-in various coder/decoders with different coding pattern, also uneconomical in practice, (Digital Versatile Disc, DVD) audio and video player promptly is an example to digital versatile disc.According to the specification definition of the video-audio data of digital versatile disc, the video-audio data that is recorded on the digital versatile disc can be coding modes such as AC-3, LPCM (Linear Pulse CodeModulation), MPEG 1 (Moving Picture Engineering Group 1) and MPEG 2.If the digital versatile disc audio and video player is compatible fully with all coding modes, then must configuration all and the corresponding various demoders of aforementioned coding mode, but this measure not only can make the cost of audio and video player improve, and the required expense of acquisition coder/decoder use authority also can thereby increase.
Therefore the invention provides a kind of universal digital video-audio recorder-playback, have software and be written into mechanism, and, can choose suitable coding mode according to different video-audio data forms with audio-visual coder/decoder software implementation.The user can select suitable audio-visual coding mode, and obtain operational coding/decoding software with reasonable prices, make digital video-audio recorder-playback have required audio-visual coding/decoding function, and coding/decoding pattern that can be different is carried out record/broadcast to video-audio data.The audio-visual record/play-back device of this kind structure need not dispose the coder/decoder software of different coding pattern, promptly can carry out coding/decoding to data by different mode, can simplify the structure of digital video-audio recorder-playback, reduces the cost of digital video-audio recorder-playback.
According to above-mentioned and other purpose of the present invention, a kind of universal digital video-audio recorder-playback is proposed, comprising universal audio-visual record/playback engine (Universal Recording/Playback Engine), data read/write device (Data Read/Write Device), and the audio-visual coder/decoder that constitutes by the coding/decoding software of encrypting (EncryptedEnc/Dec Software).Comprise in the video/audio recording/playing engine digital signal processing device (Digital Signal Processor, DSP), read-only (ROM-Type) program storage device, flash formula (Flash-Type) program storage device, random access formula (RAM-Type) data storage device, analog/digital converter, digital/analog converter and user's information interface (User MessageInterface).And the program storage device in the video/audio recording/playing engine, data storage device, analog/digital and digital/analog converter and information interface couple with digital signal processing device respectively.Then comprise data medium (Data Recording Media), data encoding/decoding device (DataEncoder/Decoder), read/write circuit (Read/Write Circuit) and data transmission interface (DataTransmission Interface) in the data read-write equipment, wherein read/write circuit couples with data medium and data encoding/decoding device respectively, and data transmission interface is except with the data encoding/decoding device is connected, also be connected, and couple with digital signal processing device and random access formula data storage device respectively with the video/audio recording/playing engine.
In the video/audio recording/playing engine, be loaded with system control program in the read-only program storage device, in order to control the running of whole recording and playing device, make flash formula program storage device be written into suitable coding/decoding software according to instruction.When desire is play video-audio data, be stored in the data of recording medium,, and, video-audio signal reappeared by after coding/decoding software and the digital/analog converter processing through read/write circuit, data encoding/decoding device and data transmission interface; During desire record video-audio data, simulate video-audio signal by analog/digital converter and coding/decoding software processes, and, video-audio data is stored in data medium through data transmission interface, data encoding/decoding device and read/write circuit.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and in conjunction with the accompanying drawings, be described in detail below:
The simple declaration of accompanying drawing:
Figure 1 shows that the block schematic diagram of known digital recorder mixer;
Figure 2 shows that according to preferred embodiment of the present invention a kind of block schematic diagram of universal digital video-audio recorder-playback;
Figure 3 shows that according to preferred embodiment of the present invention, a kind of universal digital video-audio recorder-playback, it is written into the schematic flow sheet of audio-visual coding/decoding software;
Figure 4 shows that according to preferred embodiment of the present invention, a kind of universal digital video-audio recorder-playback, it removes the schematic flow sheet of audio-visual coding/decoding software;
Figure 5 shows that according to preferred embodiment of the present invention a kind of universal digital video-audio recorder-playback, the schematic flow sheet of its record video-audio data;
Figure 6 shows that according to preferred embodiment of the present invention, a kind of universal digital video-audio recorder-playback, it plays the schematic flow sheet of video-audio data;
Figure 7 shows that according to preferred embodiment of the present invention a kind of universal digital video-audio recorder-playback, the encryption flow synoptic diagram of its audio-visual coding/decoding software; And
Figure 8 shows that according to preferred embodiment of the present invention a kind of universal digital video-audio recorder-playback, the deciphering schematic flow sheet of its audio-visual coding/decoding software.
With reference to Fig. 2, shown in it is according to preferred embodiment of the present invention, a kind of universal digital video-audio recorder-playback, the block schematic diagram of its structure.As shown in Figure 2, universal digital video-audio recorder-playback 200 of the present invention, its structure comprises two main mac function and software coding/demoder, one of them mac function is universal audio-visual record/playback engine 202, another mac function then is a data read/write device 204, this the two be coupled to each other, its element will describe in detail in the back.And encrypted audio-visual coding/decoding software 222 can be controlled and be deciphered by the system control program in the mac function in the block schematic diagram (SystemProgram) 220.
As shown in Figure 2, comprise high speed digital signal processor 210, read-only program storage device 214, flash formula program storage device 216, random access formula data storage device 218, analog/digital converter 206, digital/analog converter 208 and user's information interface 212 in universal audio-visual record/playback engine 202.Wherein analog/digital converter 206, digital/analog converter 208, user's information interface 212, read-only program storage device 214, flash formula program storage device 216 and random access formula data storage device 218 are to couple with digital signal processor 210 respectively.
Data read/write device 204 among Fig. 2 then comprises data medium 230, read/write circuit 228, data encoding/decoding device 226 and data transmission interface 224.Wherein read/write circuit 228 couples with data encoding/decoding device 226 and data medium 230 respectively, and data transmission interface 224 is except coupling with data encoding/decoding device 226, also be connected, and couple mutually with wherein digital signal processor 210 and random access formula data storage device 218 respectively with universal audio-visual record/playback engine 202.
In universal audio-visual record/playback engine 202, read-only program storage device 214 internal memories contain system control program 220 softwares, its function comprises what follows: one of them is according to audio-visual coding/decoding software 222 deciphering to encrypting of built-in key data (Key Data), and these key data are employed key data when audio-visual coding/decoding software 222 is encrypted; Wherein two be in order to be written into and to remove audio-visual coding/decoding software 222; And wherein three be in order to open the beginning audio-visual coding/decoding software 222 running; Four fundamental rules wherein are the information of user's input that receives via user's information interface 212, and control the record/playing function of universal digital video-audio recorder-playback.
And the flash formula program storage device 216 in universal audio-visual record/playback engine 202 can be stored the audio-visual coding/decoding software of being downloaded by data medium 230 222.Flash formula program storage device 216 can be written into different audio-visual coding/decoding software 222, thereby coding/decoding pattern that can be different carries out coding/decoding to video-audio data, can be considered a video-audio data coder/decoder.When flash formula program storage device 216 loaded programs are audio-visual encoding software, promptly become audio-visual scrambler; If when flash formula program pen recorder 216 loaded programs are audio-visual decoding software, then become audio-visual demoder.Therefore, only suitable audio-visual coding/decoding software 222 need be written in the flash formula program storage device, can handle video-audio data with different coding pattern.
In addition, random access formula data storage device 218 in universal audio-visual record/playback engine 202, can be used as the buffer zone of depositing of the data of desiring to carry out coding/decoding, handle but the data of desiring coding/decoding can also directly be sent to digital signal processor 210.The user by the person's of manipulating controller (not being shown among the figure) to send user's operation information, via the user's information interface 212 in universal audio-visual record/playback engine 202, universal digital video-audio recorder-playback 200 can receive the user's operation information from user's controller, and wherein user's controller comprises telepilot (Remote Controller) etc.
In universal audio-visual record/playback engine 202, the major function of analog/digital converter 206 comprises: convert the simulation video-audio signal 232 that is received to not coded digital video-audio signal 234, carry out the next code program for digital signal processor 210, coded digital video-audio signal 234 is not processed into encoded digital video-audio signal 236; And the digital/analog converter 208 in universal audio-visual record/playback engine 202, its major function then comprises: the digital audio-video signal 234 after will being handled by digital signal processor 210 is converted to simulation video-audio signal 232, and exports this simulation video-audio signal 232 to loudspeaker arrangement (not being shown among the figure).
In the data read/write device 204 of Fig. 2, data medium 230 can be in order to the record numerical data, and these numerical datas then comprise channel data (Channel Data) 238 and audio-visual coding/decoding software 222 etc.Encoded digital video-audio signal 236 from universal audio-visual record/playback engine 202 outputs, through data transmission interface 224 input data read/write devices 204, encode once more by 226 pairs of digital video-audio datas 236 of data encoding/decoding device, produce coding pass data 238, write data medium 230 by read/write circuit 228 coding pass data 238 again.And be stored in data of coding pass 238 in the data medium 230, and after read/write circuit 228 is read, handle by data encoding/decoding device 226 again, it is decoded as the digital audio-video data 236 of 210 energy identifications of digital signal processor and processing.
The data of coding pass 238 by data encoding/decoding device 226 produces can write data medium 230 with it through read/write circuit 228; And be stored in record pattern in the data medium 230, also can it be read and convert to channel data 238 via read/write circuit 228.Data transmission interface 224 in the data read/write device 204 couples mutually with universal audio-visual record/playback engine 202, and its function then is included between data read/write device 204 and the universal audio-visual record/playback engine 202 and uses transmission of digital data.
Be stored in the audio-visual coding/decoding software in the data medium 230, can have any type of coding mode, but the coding mode of this software must be compatible with the coding mode that is stored in the video-audio data in the data medium 230.In addition, the audio-visual coding/decoding software of being stored for data medium 230, can also use specific key data that audio-visual coding/decoding software is carried out encrypt/decrypt, and in these key data and the system control program 220 the key data of built-in decipher (Descrambler) corresponding, make system control program 220 correctly to be decrypted with these special key data.The audio-visual coding/decoding software 222 that conforms to video-audio data coding mode in being stored in data medium 230, via being written into flash formula program storage device 216 after the correct deciphering, make universal audio-visual record/playback engine 202 carry out coding/decoding to video-audio data.Be stored in the audio-visual coding/decoding software of encrypting in the data medium 230, can be produced by flow process shown in Figure 7, its step will describe in detail in the back.
Universal digital video-audio recorder-playback 200 of the present invention, its structure comprises two main function squares and software coding/demoder etc., have that coding/decoding software is written into, coding/decoding software removal, record and play function such as video-audio data, its flow process will be respectively described below with synoptic diagram.
Shown in Figure 3 is according to preferred embodiment of the present invention, a kind of universal digital video-audio recorder-playback, and it is written into the synoptic diagram of the operating process of audio-visual coding/decoding software.With reference to Fig. 3 and in conjunction with shown in Figure 2, at first carry out step 302, accept the user by user's information interface 212 of universal audio-visual record/playback engine 202 and indicate the order of downloading audio-visual coding/decoding software 222; Next carry out step 304, by universal audio-visual record/playback engine 202 control data read/write devices 204, makes it read the audio-visual coding/decoding file of defined encryption by the medium that is loaded with audio-visual coding/decoding software 222.
Then carry out the step 306 among Fig. 3 again, be written into the audio-visual coding/decoding file of encryption, and audio-visual coding/decoding file is sent to universal audio-visual record/playback engine 202 by data read/write device 204; Carry out step 308 then, use built-in key data that the audio-visual coding/decoding file of encrypting is decrypted by universal audio-visual record/playback engine 202, and the audio-visual coding/decoding software 222 that will decipher is written into flash formula program storage device 216, to finish the be written into flow process of universal digital video-audio recorder-playback to audio-visual coding/decoding software.The audio-visual coding/decoding software of the encryption that is stored in data medium 230 is decrypted, and the flow process of its deciphering will describe in detail in the back as shown in Figure 8.
Shown in Figure 4 is according to preferred embodiment of the present invention, a kind of universal digital video-audio recorder-playback, and it removes the synoptic diagram of the operating process of audio-visual coding/decoding software.With reference to Fig. 4 and in conjunction with shown in Figure 2, at first carry out step 402, accept the order that user's indication removes audio-visual coding/decoding software 222 by user's information interface 212 of universal audio-visual record/playback engine 202; Next carry out step 404, universal audio-visual record/playback engine 202 controls remove the audio-visual coding/decoding software of being stored in the flash formula program storage device 216, to finish the remove flow process of universal digital video-audio recorder-playback to loaded audio-visual coding/decoding software.
Shown in Figure 5 is according to preferred embodiment of the present invention, a kind of universal digital video-audio recorder-playback, the synoptic diagram of the operating process of its record video-audio data.With reference to Fig. 5 and in conjunction with shown in Figure 2, at first carry out step 502, accept the order that the user indicates the record video-audio signal by user's information interface 212 of universal audio-visual record/playback engine 202, do not specify if having, then use default audio-visual coding mode; Then carry out step 504, open the encoding function that is built in encoding software in the beginning by universal audio-visual record/playback engine 202.
Carry out the step 506 among Fig. 5 again, simulation video-audio signal 232 is after analog/digital converter 206 is converted to digital audio-video signal 234, and coded digital video-audio signal 234 is encoded into encoding video-audio data 236 to use the preset coding pattern to incite somebody to action not by encoding software again; Next carry out step 508, and by data transmission interface 224, encoding video-audio data 236 transfer to data read/write device 204 by universal audio-visual record/playback engine 202; Carry out step 510 then, the data of encoding video-audio 236 that data read/write device 204 receives from universal audio-visual record/playback engine 202 via data transmission interface 224, and be converted into channel data 238 with data encoding/decoding device 226, and channel data 238 write in the data medium 230, to finish the flow process of universal digital video-audio recorder-playback record video-audio data.
Shown in Figure 6 is according to preferred embodiment of the present invention, a kind of universal digital video-audio recorder-playback, and it plays the synoptic diagram of the operating process of video-audio data.With reference to Fig. 6 and in conjunction with shown in Figure 2, at first carry out step 602, accept the user by user's information interface 212 of universal audio-visual record/playback engine 202 and indicate broadcast to be stored in the order of the video-audio signal on the data medium 230.
Then carry out the step 604 among Fig. 6, check the coding mode that is stored in the video-audio signal on the data medium 230 by universal audio-visual record/playback engine 202; If the coding mode of this coding mode and audio-visual decoding software is incompatible, then carry out step 612, stop playing function and require the user to be written into suitable audio-visual decoding software again; If the coding mode of this coding mode and audio-visual decoding software is compatible, then carry out step 606, require data read/write device 204 to read encoding video-audio data 236 by universal audio-visual record/playback engine 202, and open audio-visual decoding function of beginning.
After universal audio-visual record/playback engine 202 opens audio-visual decoding function of beginning, proceed the step 608 among Fig. 6, with its audio-visual decoding function, will be decoded as not coded digital video-audio signal 234 by digital signal processor 210 from the data of encoding video-audio 236 of data read/write device 204; Carry out step 610 then, by universal audio-visual record/playback engine 202 not coded digital video-audio signal 234 transfer to digital/analog converter 208, and be converted into simulation video-audio signal 232 and export loudspeaker arrangement to.
Shown in Figure 7 is according to preferred embodiment of the present invention, a kind of universal digital video-audio recorder-playback, the synoptic diagram of the encryption flow of its audio-visual coding/decoding software.With reference to Fig. 7 and in conjunction with shown in Figure 2, during to audio-visual coding/decoding software cryptography, at first carry out step 702, obtain suitable audio-visual coding/decoding software; Next carry out step 704, audio-visual coding/decoding software is encrypted with special key data by data confidentiality device built-in in the system control program 220; Carry out step 706 then, will be stored in the data medium 230 through the audio-visual coding/decoding software of encrypting, to finish the encryption flow of audio-visual coding/decoding software.
Shown in Figure 8 is according to preferred embodiment of the present invention, a kind of universal digital video-audio recorder-playback, the synoptic diagram of the deciphering flow process of its audio-visual coding/decoding software.With reference to Fig. 8 and in conjunction with shown in Figure 2, during to the audio-visual coding/decoding software decryption of having encrypted, at first carry out step 802, be written into the audio-visual coding/decoding software that is stored in wherein and has encrypted by data medium 230; Next carry out step 804, the audio-visual coding/decoding software of having encrypted is decrypted with special key data by the interior decipher that is built in system control program 220; Carry out step 706 then, will be loaded in the flash formula program storage device 216 through the audio-visual coding/decoding software 222 of deciphering, to finish the deciphering flow process of audio-visual coding/decoding software.
By the foregoing description as can be known, universal digital video-audio recorder-playback of the present invention combines advanced Digital Signal Processing, audio-visual coding/decoding technology, data encryption/decryption technology and data read/write device technique etc., have software and be written into mechanism, and with audio-visual coder/decoder software implementation.The user can select suitable audio-visual coding mode for use and not need extra cost according to demand, make digital video-audio recorder-playback have required audio-visual coding/decoding function, and coding/decoding pattern that can be different is encoded, decodes, writes down, is play video-audio data, and need not dispose the coder/decoder software of different coding pattern, can simplify the structure of digital video-audio recorder-playback, and reduce the required cost of digital video-audio recorder-playback.
In addition, use universal digital video-audio recorder-playback of the present invention, read-only program storage device in universal audio-visual record/playback engine is loaded with system control program, can be according to the order of being accepted from user's information interface, and according to built-in special key data, the audio-visual coding/decoding software that the data coding mode is conformed to is decrypted, and it is loaded into flash formula program storage device, make digital video-audio recorder-playback have required audio-visual coding/decoding function, and correct record/broadcast audio and video information.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention should be with being as the criterion that the claim scope is defined.
Claims (9)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00118357 CN1130715C (en) | 2000-06-15 | 2000-06-15 | Universal digital video-audio recorder-playback |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 00118357 CN1130715C (en) | 2000-06-15 | 2000-06-15 | Universal digital video-audio recorder-playback |
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| CN1330369A true CN1330369A (en) | 2002-01-09 |
| CN1130715C CN1130715C (en) | 2003-12-10 |
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| CN 00118357 Expired - Fee Related CN1130715C (en) | 2000-06-15 | 2000-06-15 | Universal digital video-audio recorder-playback |
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| CN (1) | CN1130715C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100345203C (en) * | 2003-01-21 | 2007-10-24 | 索尼株式会社 | Recording apparatus, reproduction apparatus and file management method |
| CN1941138B (en) * | 2005-09-22 | 2010-10-20 | 罗姆股份有限公司 | Signal processing apparatus, signal processing method and storage system |
| CN111093109A (en) * | 2018-10-24 | 2020-05-01 | 杭州海康威视数字技术股份有限公司 | Media data playing processing method and media playing equipment |
-
2000
- 2000-06-15 CN CN 00118357 patent/CN1130715C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100345203C (en) * | 2003-01-21 | 2007-10-24 | 索尼株式会社 | Recording apparatus, reproduction apparatus and file management method |
| CN1941138B (en) * | 2005-09-22 | 2010-10-20 | 罗姆股份有限公司 | Signal processing apparatus, signal processing method and storage system |
| CN111093109A (en) * | 2018-10-24 | 2020-05-01 | 杭州海康威视数字技术股份有限公司 | Media data playing processing method and media playing equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1130715C (en) | 2003-12-10 |
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