CN1602047A - Conversion device and method for public interfacing digital television CI to USB mterface - Google Patents
Conversion device and method for public interfacing digital television CI to USB mterface Download PDFInfo
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- CN1602047A CN1602047A CN 200410051538 CN200410051538A CN1602047A CN 1602047 A CN1602047 A CN 1602047A CN 200410051538 CN200410051538 CN 200410051538 CN 200410051538 A CN200410051538 A CN 200410051538A CN 1602047 A CN1602047 A CN 1602047A
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Abstract
The invention relates to a device of connecting USB device to digital TV, and supporting data in USB device to be displayed on digital TV directly as well as relates to conversion equipment and method of connecting CI common interface of digital TV, which saves TV program on external USB device, to USB interface. Common interface is adopted between digital TV set and the conversion equipment. The conversion method includes steps: determining whether file of USB device selected by user can be decoded by decoder build in digital TV set; executing step, if file can not be decoded, microprocessor through logic unit of conversion equipment to carry out decoding, re-encoding; sending step, decoded file recognized by decoder built in TV set is partitioned and packed as standard TS stream format, which through CI data stream is provided for digital TV set to playback.
Description
Technical field
The present invention relates to a kind of USB device is inserted the equipment of digital television and supports data play-overing in digital television in USB device by this equipment, and TV programme is stored in conversion equipment and the conversion method thereof of the digital television CI common interface of external USB equipment to USB interface.
Background technology
In the separation between machine and card scheme of digital television broadcast system (DVB), digital television and conditional access module are separately, digital television is finished the work that receives the decode of signal, conditional access module is finished the descrambling and the decryption work of signal, between digital television and conditional access module, adopt disclosed interface standard, utilize this standard interface just can finish visit, and needn't consider concrete realization details digital television and conditional access module.In order to realize the communication between digital television and the conditional access module, Europe has defined a disclosed standard interface-CI (EN50221: the common interface of visiting with other digital video application that is used to have ready conditions is described), this standard interface definition two logic interfacings: transport stream interface and command interface, by this common interface, can realize communicating by letter to conditional access module, digital television and other digital-video equipments.
At present, usb bus has been widely used in all kinds of hand-held portable devices, particularly as the standard configuration of PC.A large amount of audio-video frequency contents is stored in all kinds of USB device, particularly in the memory of PC, these media contents are because there is different coded systems, thereby need the broadcast of decoding of various coding device, and numerous hardware playback equipments can only be decoded at form seldom.Along with digital television extensively popularize with and the continual renovation of service, digital television will become better player, and USB device can't directly insert digital television, a lot of coded systems also can't be by the built-in decoder decode of digital television, thereby can't be by watching in the digital television, simultaneously, more and more Feng Fu digital television program will cause digital television program is selected the demand of preserving, and the digital television content directly is saved in user's the big capacity USB memory device by USB interface, PC for example, equipment such as portable hard drive will be simply a kind of and mode easily.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point of the prior art and provide a kind of USB device is inserted the equipment of digital television, and support conversion equipment and the conversion method thereof of the digital television CI common interface of play-overing and TV programme be stored in external USB equipment of data in digital television in USB device to the digital television CI common interface of USB interface to USB interface by this equipment.
Purpose of the present invention can reach by following measure:
This digital television CI common interface is to the conversion equipment of USB interface, and its special character is: be connected by common interface between the conversion equipment of a digital television and an employing common interface.
Wherein: have seven kinds of conversion equipments and can realize the object of the invention.
First kind of conversion equipment comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One USB terminal is arranged at the front end of casing, in order to connect USB device;
One display module is arranged at the front end of casing, in order to realize the visual of system;
One PCMCIA terminal is arranged at the rear end of casing, in order to transmission TS stream and communication information;
One radio receiving transmitting module is arranged at the casing front end;
One control unit is arranged in the casing between the digital television and other functional modules of conversion equipment, in order to control whole system operation process and with digital television between communicate by letter;
One logical block is arranged between casing inner control unit and the large capacity cache, in order to realize bi-directional data conversion and the output between USB device and the standard TS stream;
One large capacity cache is arranged between casing inner control unit and the logical block, in order to the storage original document and through the file of recompile;
One remote controller combines with radio receiving transmitting module, to realize user's controlled function;
Wherein, when the file in the USB device is play in user's selection, control unit will read user-selected fileinfo and this document will be write large capacity cache, decode accordingly and recompile by logical block again, finally the form output file of the coded system that can discern with the digital television decoder is to large capacity cache, and the TS stream format of this document being cut apart the standard of being packaged into by control unit offers digital television by the CI data stream interface and plays again;
When the user selects to preserve the digital television program, control unit will carry out communication by CI command interface and Digital Television machine controller, large capacity cache in the USB device is offered the digital television internal control circuit as a resource, and require the digital television control circuit from decoded TS stream format, the information of this program to be extracted, spread the large capacity cache of delivering to conversion equipment by the CI data stream interface, and under the control of conversion equipment control unit, this program stream by the logical block recompile, is write the access customer USB device by control unit control with file then.
The described coffret of this common interface and command interface are the setting of parallel and two-way operation.
Second kind of conversion equipment comprises:
This conversion equipment comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One microcontroller, be arranged between other functional module of digital television and conversion equipment in the casing, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division be packaged into TS and transmit above flowing data stream interface at CI;
One display screen is arranged at the front end of casing, in order to realize the visual of system;
One large capacity cache is arranged between the data stream interface of microcontroller in the casing, comprehensive decoder and common interface, in order to store original document and through the file of recompile;
One encoder is arranged in the casing microcontroller with comprehensively between the decoder, in order to being the form that the built-in decoder of Digital Television can be decoded with decoded file recompile;
One comprehensive decoder is arranged between interior large capacity cache of casing and the encoder, in order to the various audio-video documents in user's USB device are decoded;
One radio receiving transmitting module is arranged at the casing front end;
Wherein, insert in the digital television process at equipment, conversion equipment will and digital television between carry out the initialization communication, comprise natural list information each other, the coded format that can decode, and set up corresponding tables of data, if user-selected document No. form can't find the information of coupling in corresponding information list, microcontroller will read the fileinfo of user's selection and file will be write large capacity cache, decode accordingly by comprehensive decoder again after encoder carries out recompile, make it meet the standard coding format that the digital television decoder can be decoded, finally the form output file of the coded system that can discern with the digital television decoder is to microcontroller, and the TS stream format of this document being cut apart the standard of being packaged into by microcontroller is sent to the broadcast of decoding in the digital television by CI transport stream interface again.
The described coffret of this common interface and command interface are the setting of parallel and two-way operation.
The third conversion equipment comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One microcontroller, be arranged between other functional module of digital television and conversion equipment in the casing, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division be packaged into TS and transmit above flowing data stream interface at CI;
One display screen is arranged at the front end of casing, in order to realize the visual of system;
One large capacity cache is arranged between the data stream interface of microcontroller in the casing, comprehensive decoder and common interface, in order to store original document and through the file of recompile;
Conversion equipment will directly cushion file, and be packaged into the TS stream format when confirming the file that the digital television decoder can be supported to choose, and is sent to the broadcast of decoding in the digital television by CI transport stream interface
Wherein, insert in the digital television process at equipment, conversion equipment will and digital television between carry out the initialization communication, comprise natural list information each other, the coded format that can decode, and set up corresponding tables of data, if user-selected document No. form finds the information that is complementary in corresponding information list, microcontroller will directly read in large capacity cache to file, and the TS stream format of this document being cut apart the standard of being packaged into is sent to the broadcast of decoding in the digital television by CI transport stream interface.
The described coffret of this common interface and command interface are the setting of parallel and two-way operation.
The 4th kind of conversion equipment comprises:
This conversion equipment comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One decoder module is arranged at respectively between microcontroller, large capacity cache and the encoder, is made of several decoders in parallel, in order to select corresponding decoder under the control of microcontroller file is decoded;
One large capacity cache is arranged at respectively between microcontroller and the decoder module, in order to the storage original document and through the file of recompile;
One encoder is connected to decoder module, carries out recompile in order to the form that will adopt the built-in decoder of digital television to decode through the file of decoding;
Wherein, when the digital coding in the USB device and decode procedure are finished by the integrated circuit ASIC of special use, microcontroller will directly read in large capacity cache to file, under the control of microcontroller, decoder module selects corresponding decoder that file is decoded, and encoded device will adopt the built-in decoder of digital television to decode through the file of decoding form carry out recompile, be sent to the broadcast of decoding in the digital television with the TS stream format of standard by CI transport stream interface.The described coffret of this common interface and command interface are the setting of parallel and two-way operation.
The 5th kind of conversion equipment comprises:
This conversion equipment comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One CPU, the two-way linker memory of difference, coprocessor, large capacity cache, its unidirectional connection microcontroller, coding output are used for the control of program and decode procedure;
One program storage, its two-way connection CPU is made of several decoder modules, coding module, and each module is decoded to user-selected file at different coded formats, recompile output then;
One coprocessor, its two-way connection CPU in order to quickening the process of CPU encoding and decoding, and can reduce the workload of CPU;
One large capacity cache, it is two-way connection CPU and microcontroller respectively, in order to the storage original document and through the file of recompile;
One microcontroller, it inserts CPU, large capacity cache respectively, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division transmit above being packaged into the data stream interface of TS stream at CI;
Wherein, when the digital coding in the USB device and decode procedure by CPU, coprocessor, software, when program storage is finished, microcontroller will directly read in large capacity cache to file, and under the control of CPU, program storage selects corresponding decoder module that file is decoded, and encoded module will adopt the built-in decoder of digital television to decode through the file of decoding form carry out recompile, after the TS stream format that CPU will encode with standard is sent to the broadcast of decoding in the digital television by CI transport stream interface.
The described coffret of this common interface and command interface are the setting of parallel and two-way operation.
The 6th kind of conversion equipment comprises:
This conversion equipment comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One CPU, the two-way linker memory of difference, coprocessor, large capacity cache, its unidirectional connection microcontroller, coding module are used for the control of program and decode procedure;
One program storage, its two-way connection CPU is made of several decoder modules, and each module is decoded to user-selected file at different coded formats;
One coprocessor, its two-way connection CPU in order to quickening the process of CPU encoding and decoding, and can reduce the workload of CPU;
One large capacity cache, it is two-way connection CPU and microcontroller respectively, in order to the storage original document and through the file of recompile;
One microcontroller, it inserts CPU, large capacity cache respectively, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division transmit above being packaged into the data stream interface of TS stream at CI;
One coding module, it is connected in CPU, carrying out recompile through the form that the file of decoding can be decoded with the built-in decoder of digital television;
Wherein, the The data software function in USB device is finished comprehensive decoding, and when adopting special-purpose integrated circuit ASIC to carry out the encoding and decoding of hardware encoding, decoding function is finished with the various program modules that reside in the program storage by CPU.
The described coffret of this common interface and command interface are the setting of parallel and two-way operation.
The 7th kind of conversion equipment comprises:
This conversion equipment comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One CPU, the two-way linker memory of difference, coprocessor, large capacity cache, its unidirectional connection microcontroller, coding module are used for the control of program and decode procedure;
One program storage, its two-way connection CPU is made of several decoder modules, and each module is decoded to user-selected file at different coded formats;
One coprocessor, its two-way connection CPU in order to quickening the process of CPU encoding and decoding, and can reduce the workload of CPU;
One large capacity cache, it is two-way connection CPU and microcontroller respectively, in order to the storage original document and through the file of recompile;
One microcontroller, it inserts CPU, large capacity cache respectively, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division transmit above being packaged into the data stream interface of TS stream at CI;
One coding module, it is connected in CPU, carrying out recompile through the form that the file of decoding can be decoded with the built-in decoder of digital television;
Wherein, the The data software function in USB device is finished comprehensive decoding, and when adopting special-purpose integrated circuit ASIC to carry out the encoding and decoding of hardware encoding, decoding function is finished with the various program modules that reside in the program storage by CPU.
This device can be plugged into computer peripheral device respectively.
Purpose of the present invention can also reach by following measure:
This digital television CI common interface is to the conversion method of USB interface, and its special character is:
It comprises following steps:
Determining step judges whether the file of the USB device that the user selects can be by the built-in decoder decode of digital television;
Execution in step, if determining step is judged file selected in the USB device can't be by the built-in decoder decode of digital television the time, microcontroller will be decoded and recompile by the logical block of conversion equipment;
Forwarding step is play for can be offered digital television by the CI data stream interface by the TS stream format that the built-in decoder decode of digital television or the formatted file that can discern with the built-in decoder of digital television are cut apart the standard of being packaged into behind coding and decoding.
The present invention has following advantage compared to existing technology:
1. by this equipment, realized the exchanges data of digital television and computer, can be linked in the television set easily after making audiovisual content in the Computer IP network download in the USB device carrier and go.
2. this remote control of equipment self band and decoding device, after the content in the IP network was linked in the television set, existing digital television need not increase any software just can realize that audio frequency and video frequency program play in computer.
3. by this equipment, the audio frequency that television set is received, video frequency program can directly be sent to by USB interface and go in the computer and note.
Can with digital camera in be connected, the content in the digital camera is shown on television set.
5. can content record be got off being connected by the DVD burner of USB interface with the outside.
6. above audio frequency and video includes but not limited to following form: MP3, MPEG2, MPEG4, MPEG7.
7. can also other USB interface equipment be linked into digital television by this equipment.
Description of drawings
Fig. 1 is the common interface block diagram of digital television broadcast system of the present invention.
Fig. 2 is the protocol architecture figure of common interface (CI) command interface of pcmcia interface standard of the present invention.
Fig. 3 is that the present invention is at the functional block diagram of confirming whole system under the situation that user-selected played file can't be decoded by the digital television inner demoder.
Fig. 4 is that the present invention is at the functional block diagram of confirming whole system under the situation that user-selected played file can be decoded by the digital television inner demoder.
Fig. 5 is that the present invention uses application-specific integrated circuit (ASIC) to carry out the encoding and decoding logic module block diagram of hard decoder and coding.
Fig. 6 is that the present invention uses software function to finish the codec functions module frame chart of coding and comprehensive decoding.
Fig. 7 is that the present invention adopts software function to finish comprehensive decoding, adopts special integrated circuit to carry out the codec functions module frame chart of hardware encoding.
Embodiment
The present invention is further detailed in conjunction with the accompanying drawings below:
Fig. 1, Fig. 2 show first embodiment of the present invention.
Be connected by common interface 3 between the conversion equipment 2 of a digital television 1 and an employing common interface.
This conversion equipment 2 comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One USB terminal is arranged at the front end of casing, in order to connect USB device;
One display module is arranged at the front end of casing, in order to realize the visual of system;
One PCMCIA terminal is arranged at the rear end of casing, in order to transmission TS stream and communication information;
One radio receiving transmitting module is arranged at the casing front end;
One control unit is arranged in the casing between the digital television and other functional modules of conversion equipment, in order to control whole system operation process and with digital television between communicate by letter;
One logical block is arranged between casing inner control unit and the large capacity cache, in order to realize bi-directional data conversion and the output between USB device and the standard TS stream;
One large capacity cache is arranged between casing inner control unit and the logical block, in order to the storage original document and through the file of recompile;
One remote controller combines with radio receiving transmitting module, to realize user's controlled function;
Wherein, when the file in the USB device 4 is play in user's selection, control unit will read user-selected fileinfo and this document will be write large capacity cache, decode accordingly and recompile by logical block again, finally the form output file of the coded system that can discern with the digital television decoder is to large capacity cache, and the TS stream format of this document being cut apart the standard of being packaged into by control unit offers digital television 1 by the CI data stream interface and plays again;
When the user selects to preserve the digital television program, control unit will carry out communication by CI command interface and Digital Television machine controller, large capacity cache in the USB device 4 is offered the digital television internal control circuit as a resource, and require the digital television control circuit from decoded TS stream format, the information of this program to be extracted, spread the large capacity cache of delivering to conversion equipment by the CI data stream interface, and under the control of conversion equipment 2 control units, this program stream by the logical block recompile, is write access customer USB device 4 by control unit control with file then.
These common interface 3 described coffrets and command interface are the setting of parallel and two-way operation.Common interface 3 comprises two parts: transport stream interface and command interface, and two interfaces all are the stratification designs, permission is adopted same upper-layer protocol and is adopted different physical layers to connect, and in this implementation, adopts the PCMCIA standard interface.Command interface comprises physical channel and standard agreement in order to set up the communication connection between conversion equipment 2 and digital television 1, the transport stream interface is used for transmitting TS stream, in this programme, finish TS stream after the conversion and will directly send in the digital television 1 as no scrambling code stream and directly decode.See also Fig. 2, in the DVB of pcmcia interface standard common interface command interface protocol architecture, I is a DVB common interface command interface protocol layer, and II is based on the protocol layer that the PCMCIa standard realizes the common interface command interface.Wherein, application layer is in order to provide different resource and application, session layer can be when equipment needs resource, set up a dialogue to resource, the general transmission layer can control transmission establishment of connection and deletion, and connects by transmission and to transmit data, and transport layer is set up the transfer of data that is suitable for the PCMCIA physical interface, link layer is provided to the data channel of distinct device, and physical layer has defined the electrical characteristic of physical connection.In stratification design, the underlying protocol data are transparent to upper-layer protocol, that is to say, upper-layer protocol can directly utilize bottom data and needn't consider the source and the mode of data.By the command interface layer, can set up effective negotiation between conversion equipment and the digital television, fileinfo and control information that transmission is relevant, realize directly being sent in the digital television decoder through the file of conversion, and support the TV programme that the user is selected to send back conversion equipment, to realize that the digital television program is downloaded preservation from middle the separating of code stream.
Fig. 3, Fig. 2 show second embodiment of the present invention.
This conversion equipment 2 comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One microcontroller, be arranged between other functional module of digital television and conversion equipment in the casing, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division be packaged into TS and transmit above flowing data stream interface at CI;
One display screen is arranged at the front end of casing, in order to realize the visual of system;
One large capacity cache is arranged between the data stream interface of microcontroller in the casing, comprehensive decoder and common interface, in order to store original document and through the file of recompile;
One encoder is arranged in the casing microcontroller with comprehensively between the decoder, in order to being the form that the built-in decoder of Digital Television can be decoded with decoded file recompile;
One comprehensive decoder is arranged between interior large capacity cache of casing and the encoder, in order to the various audio-video documents in user's USB device are decoded;
One radio receiving transmitting module is arranged at the casing front end;
Wherein, insert in digital television 1 process at conversion equipment 2, conversion equipment 2 will and digital television 1 between carry out the initialization communication, comprise natural list information each other, the coded format that can decode, and set up corresponding tables of data, if user-selected document No. form can't find the information of coupling in corresponding information list, microcontroller will read the fileinfo of user's selection and file will be write large capacity cache, decode accordingly by comprehensive decoder again after encoder carries out recompile, make it meet the standard coding format that the digital television decoder can be decoded, finally the form output file of the coded system that can discern with the digital television decoder is to microcontroller, and the TS stream format of this document being cut apart the standard of being packaged into by microcontroller is sent to the broadcast of decoding in the digital television 1 by CI transport stream interface again.
Fig. 4, Fig. 2 show the 3rd embodiment of the present invention.
This conversion equipment 2 comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One microcontroller, be arranged between other functional module of digital television and conversion equipment in the casing, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division be packaged into TS and transmit above flowing data stream interface at CI;
One display screen is arranged at the front end of casing, in order to realize the visual of system;
One large capacity cache is arranged between the data stream interface of microcontroller in the casing, comprehensive decoder and common interface, in order to store original document and through the file of recompile;
Wherein, insert in digital television 1 process at conversion equipment 2, conversion equipment 2 will and digital television 1 between carry out the initialization communication, comprise natural list information each other, the coded format that can decode, and set up corresponding tables of data, if user-selected document No. form finds the information that is complementary in corresponding information list, microcontroller will directly read in large capacity cache to file, and the TS stream format of this document being cut apart the standard of being packaged into is sent to the broadcast of decoding in the digital television by CI transport stream interface.
Fig. 5, Fig. 2 show the 4th embodiment of the present invention.
This conversion equipment 2 comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One microcontroller 5, it inserts CPU, large capacity cache respectively, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division transmit above being packaged into the data stream interface of TS stream at CI;
One decoder module 6 is arranged at respectively between microcontroller, large capacity cache and the encoder, is made of several decoders in parallel, in order to select corresponding decoder under the control of microcontroller file is decoded;
One large capacity cache 7 is arranged at respectively between microcontroller and the decoder module, in order to the storage original document and through the file of recompile;
One encoder 8 is connected to decoder module, carries out recompile in order to the form that will adopt digital television 1 built-in decoder to decode through the file of decoding;
Wherein, when the digital coding in the USB device 4 and decode procedure are finished by the integrated circuit ASIC of special use, microcontroller 5 will directly read in large capacity cache 7 to file, under the control of microcontroller 5, decoder module 6 selects corresponding decoder that file is decoded, and encoded device 8 will adopt the built-in decoder of digital television to decode through the file of decoding form carry out recompile, be sent to the broadcast of decoding in the digital television 1 with the TS stream format of standard by CI transport stream interface.
Fig. 6, Fig. 2 show the 5th embodiment of the present invention.
This conversion equipment 2 comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One CPU9, the two-way linker memory 10 of difference, coprocessor 11, large capacity cache 7, its unidirectional connection microcontroller 5, coding output are used for the control of program and decode procedure;
One program storage 10, its two-way connection CPU9 is made of several decoder modules, coding module, and each module is decoded to user-selected file at different coded formats, recompile output then;
One coprocessor 11, its two-way connection CPU9 in order to quickening the process of CPU encoding and decoding, and can reduce the workload of CPU9;
One large capacity cache 7, it is two-way connection CPU9 and microcontroller 5 respectively, in order to the storage original document and through the file of recompile;
One microcontroller 5, it inserts CPU9, large capacity cache 7 respectively, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division transmit above being packaged into the data stream interface of TS stream at CI;
Wherein, digital coding in USB device 4 and decode procedure are by CPU9, coprocessor 11, software, when program storage 10 is finished, microcontroller 5 will directly read in large capacity cache 7 to file, and under the control of CPU9, program storage 10 selects corresponding decoder module that file is decoded, and the form that encoded module will adopt digital television 1 built-in decoder to decode through the file of decoding carries out recompile, coprocessor 11 can reduce the workload of DSP by FFT (fast Flourier computing) fast, improves the speed of encoding-decoding process.After the TS stream format that CPU9 will encode with standard is sent to the broadcast of decoding in the digital television 1 by CI transport stream interface.
Fig. 7, Fig. 2 show the 6th embodiment of the present invention.
This conversion equipment 2 comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One CPU9, the two-way linker memory 10 of difference, coprocessor 11, large capacity cache 7, its unidirectional connection microcontroller 5, coding module 12 are used for the control of program and decode procedure;
One program storage 10, its two-way connection CPU9 is made of several decoder modules, and each module is decoded to user-selected file at different coded formats;
One coprocessor 11, its two-way connection CPU9 in order to quickening the process of CPU encoding and decoding, and can reduce the workload of CPU;
One large capacity cache 7, it is two-way connection CPU and microcontroller respectively, in order to the storage original document and through the file of recompile;
One microcontroller, it inserts CPU9, large capacity cache 7 respectively, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division transmit above being packaged into the data stream interface of TS stream at CI;
One coding module 12, it is connected in CPU9, carrying out recompile through the form that the file of decoding can be decoded with digital television 1 built-in decoder;
Wherein, the The data software function in USB device 4 is finished comprehensive decoding, and when adopting special-purpose integrated circuit ASIC to carry out the encoding and decoding of hardware encoding, decoding function is finished with the various program modules that reside in the program storage 10 by CPU9.
This digital television CI common interface comprises following steps to the conversion method of USB interface:
Determining step judges whether the file of the USB device that the user selects can be by the built-in decoder decode of digital television;
Execution in step, if determining step is judged file selected in the USB device can't be by the built-in decoder decode of digital television the time, microcontroller will be decoded and recompile by the logical block of conversion equipment;
Forwarding step is play for can be offered digital television by the CI data stream interface by the TS stream format that the built-in decoder decode of digital television or the formatted file that can discern with the built-in decoder of digital television are cut apart the standard of being packaged into behind coding and decoding.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to the covering scope of claim of the present invention.
Claims (10)
1. a Digital Television CI common interface is characterized in that to the conversion equipment of USB interface: be connected by common interface between the conversion equipment of digital television receiver and an employing common interface.
2. Digital Television CI common interface according to claim 1 is characterized in that to the conversion equipment of USB interface:
This conversion equipment comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One USB terminal is arranged at the front end of casing, in order to connect USB device;
One display module is arranged at the front end of casing, in order to realize the visual of system;
One PCMCIA terminal is arranged at the rear end of casing, in order to transmission TS stream and communication information;
One radio receiving transmitting module is arranged at the casing front end;
One control unit is arranged in the casing between the Digital Television and other functional modules of conversion equipment, in order to control whole system operation process and with Digital Television between communicate by letter;
One logical block is arranged between casing inner control unit and the large capacity cache, in order to realize bi-directional data conversion and the output between USB device and the standard TS stream;
One large capacity cache is arranged between casing inner control unit and the logical block, in order to the storage original document and through the file of recompile;
One remote controller combines with radio receiving transmitting module, to realize user's controlled function;
Wherein, when the file in the USB device is play in user's selection, control unit will read user-selected fileinfo and this document will be write large capacity cache, decode accordingly and recompile by logical block again, finally the form output file of the coded system that can discern with digital television decoder is to large capacity cache, and the TS stream format of this document being cut apart the standard of being packaged into by control unit offers Digital Television by the CI data stream interface and plays again;
When the user selects to preserve digital television program, control unit will carry out communication by CI command interface and Digital Television controller, large capacity cache in the USB device is offered the Digital Television internal control circuit as a resource, and require the Digital Television control circuit from decoded TS stream format, the information of this program to be extracted, spread the large capacity cache of delivering to conversion equipment by the CI data stream interface, and under the control of conversion equipment control unit, this program stream by the logical block recompile, is write the access customer USB device by control unit control with file then.
3. Digital Television CI common interface according to claim 1 is characterized in that to the conversion equipment of USB interface described coffret of this common interface and command interface are the setting of parallel and two-way operation.
4. Digital Television CI common interface according to claim 1 is characterized in that to the conversion equipment of USB interface:
This conversion equipment comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One microprocessor, be arranged between other functional module of Digital Television and conversion equipment in the casing, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division be packaged into TS and transmit above flowing data stream interface at CI;
One display screen is arranged at the front end of casing, in order to realize the visual of system;
One large capacity cache is arranged between the data stream interface of microprocessor in the casing, comprehensive decoder and common interface, cushions preservation in order to the file to each stage in the processing procedure;
One encoder is arranged in the casing microprocessor with comprehensively between the decoder, in order to being the form that the built-in decoder of Digital Television can be decoded with decoded file recompile;
One comprehensive decoder is arranged between interior large capacity cache of casing and the encoder, in order to the various audio-video documents in user's USB device are decoded;
One radio receiving transmitting module is arranged at the casing front end;
Wherein, insert in the Digital Television process at equipment, conversion equipment will and digital television receiver between carry out the initialization communication, comprise natural list information each other, the coded format that can decode, and set up corresponding tables of data, if user-selected document No. form can't find the information of coupling in corresponding information list, microprocessor will read the fileinfo of user's selection and file will be write large capacity cache, decode accordingly by comprehensive decoder again after encoder carries out recompile, make it meet the standard coding format that digital television decoder can be decoded, finally the form output file of the coded system that can discern with digital television decoder is to microprocessor, and the TS stream format of this document being cut apart the standard of being packaged into by microprocessor is sent to the broadcast of decoding in the Digital Television by CI transport stream interface again.
5. Digital Television CI common interface according to claim 1 is characterized in that to the conversion equipment of USB interface:
This conversion equipment comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One microprocessor, be arranged between other functional module of Digital Television and conversion equipment in the casing, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division be packaged into TS and transmit above flowing data stream interface at CI;
One display screen is arranged at the front end of casing, in order to realize the visual of system;
One large capacity cache is arranged between the data stream interface of microprocessor in the casing, comprehensive decoder and common interface, cushions preservation in order to the file to each stage in the processing procedure;
Conversion equipment will directly cushion file, and be packaged into the TS stream format when confirming the file that digital television decoder can be supported to choose, and is sent to the broadcast of decoding in the Digital Television by CI transport stream interface
Wherein, insert in the Digital Television process at equipment, conversion equipment will and digital television receiver between carry out the initialization communication, comprise natural list information each other, the coded format that can decode, and set up corresponding tables of data, if user-selected document No. form finds the information that is complementary in corresponding information list, microprocessor will directly read in large capacity cache to file, and the TS stream format of this document being cut apart the standard of being packaged into is sent to the broadcast of decoding in the Digital Television by CI transport stream interface.
6. Digital Television CI common interface according to claim 1 is characterized in that to the conversion equipment of USB interface:
This conversion equipment comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One decoder module is arranged at respectively between microcontroller, large capacity cache and the encoder, is made of several decoders in parallel, in order to select corresponding decoder under the control of microcontroller file is decoded;
One large capacity cache is arranged at respectively between microcontroller and the decoder module, in order to the storage original document and through the file of recompile;
One encoder is connected to decoder module, carries out recompile in order to the form that will adopt the built-in decoder of Digital Television to decode through the file of decoding;
Wherein, when the digital coding in the USB device and decode procedure are finished by the integrated circuit ASIC of special use, microcontroller will directly read in large capacity cache to file, under the control of microcontroller, decoder module selects corresponding decoder that file is decoded, and encoded device will adopt the built-in decoder of Digital Television to decode through the file of decoding form carry out recompile, be sent to the broadcast of decoding in the Digital Television with the TS stream format of standard by CI transport stream interface.
7. Digital Television CI common interface according to claim 1 is characterized in that to the conversion equipment of USB interface:
This conversion equipment comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One CPU, the two-way linker memory of difference, coprocessor, large capacity cache, its unidirectional connection microprocessor, coding output are used for the control of program and decode procedure;
One program storage, its two-way connection CPU is made of several decoder modules, coding module, and each module is decoded to user-selected file at different coded formats, recompile output then;
One coprocessor, its two-way connection CPU in order to quickening the process of CPU encoding and decoding, and can reduce the workload of CPU;
One large capacity cache, it is two-way connection CPU and microcontroller respectively, in order to the storage original document and through the file of recompile;
One microcontroller, it inserts CPU, large capacity cache respectively, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division transmit above being packaged into the data stream interface of TS stream at CI;
Wherein, when the digital coding in the USB device and decode procedure by CPU, coprocessor, software, when program storage is finished, microcontroller will directly read in large capacity cache to file, and under the control of CPU, program storage selects corresponding decoder module that file is decoded, and encoded module will adopt the built-in decoder of Digital Television to decode through the file of decoding form carry out recompile, after the TS stream format that CPU will encode with standard is sent to the broadcast of decoding in the Digital Television by CI transport stream interface.
8. Digital Television CI common interface according to claim 1 is characterized in that to the conversion equipment of USB interface:
This conversion equipment comprises:
One casing comprises upper cover, the lower cover that can fasten mutually;
One CPU, the two-way linker memory of difference, coprocessor, large capacity cache, its unidirectional connection microprocessor, coding module are used for the control of program and decode procedure;
One program storage, its two-way connection CPU is made of several decoder modules, and each module is decoded to user-selected file at different coded formats;
One coprocessor, its two-way connection CPU in order to quickening the process of CPU encoding and decoding, and can reduce the workload of CPU;
One large capacity cache, it is two-way connection CPU and microcontroller respectively, in order to the storage original document and through the file of recompile;
One microcontroller, it inserts CPU, large capacity cache respectively, in order to the work of each functional module of control transformation device interior, processing and Digital Television on the CI command interface communicate by letter and will change after file division transmit above being packaged into the data stream interface of TS stream at CI;
One coding module, it is connected in CPU, carrying out recompile through the form that the file of decoding can be decoded with the built-in decoder of Digital Television;
Wherein, the The data software function in USB device is finished comprehensive decoding, and when adopting special-purpose integrated circuit ASIC to carry out the encoding and decoding of hardware encoding, decoding function is finished with the various program modules that reside in the program storage by CPU.
9. Digital Television CI common interface according to claim 1 is characterized in that to the conversion equipment of USB interface: this conversion equipment can be plugged into computer periphery external device respectively.
10. a Digital Television CI common interface is characterized in that to the conversion method of USB interface:
Comprise following steps:
Determining step judges whether the file of the USB device that the user selects can be by the built-in decoder decode of Digital Television;
Execution in step, if determining step is judged file selected in the USB device can't be by the built-in decoder decode of Digital Television the time, microprocessor will be decoded and recompile by the logical block of conversion equipment;
Forwarding step is play for can be offered Digital Television by the CI data stream interface by the TS stream format that the built-in decoder decode of Digital Television or the formatted file that can discern with the built-in decoder of Digital Television are cut apart the standard of being packaged into behind coding and decoding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100515381A CN100353746C (en) | 2004-09-21 | 2004-09-21 | Conversion device and method for public interfacing digital television CI to USB mterface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100515381A CN100353746C (en) | 2004-09-21 | 2004-09-21 | Conversion device and method for public interfacing digital television CI to USB mterface |
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| Publication Number | Publication Date |
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| CN1602047A true CN1602047A (en) | 2005-03-30 |
| CN100353746C CN100353746C (en) | 2007-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100515381A Active CN100353746C (en) | 2004-09-21 | 2004-09-21 | Conversion device and method for public interfacing digital television CI to USB mterface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951476A (en) * | 2010-10-19 | 2011-01-19 | 冠捷显示科技（厦门）有限公司 | Method fro storing USB (Universal Serial Bus) copyfile by using television with USB interface |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3305183B2 (en) * | 1996-01-12 | 2002-07-22 | 株式会社東芝 | Digital broadcast receiving terminal |
| DE10140289A1 (en) * | 2001-08-16 | 2003-02-27 | Technotrend Ag | Device for reducing bandwidth in MPEG2 video streams has digital tuner, interface for connecting to host, transport stream interface logic, digital signal processor with linked memory and universal serial bus controller |
| EP1439461A1 (en) * | 2003-01-15 | 2004-07-21 | Drea-Multimedia-TV GmbH | Computer |
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- 2004-09-21 CN CNB2004100515381A patent/CN100353746C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951476A (en) * | 2010-10-19 | 2011-01-19 | 冠捷显示科技（厦门）有限公司 | Method fro storing USB (Universal Serial Bus) copyfile by using television with USB interface |
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| Publication number | Publication date |
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| CN100353746C (en) | 2007-12-05 |
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