CN107249113A - A kind of signal extends method and system - Google Patents
A kind of signal extends method and system Download PDFInfo
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- CN107249113A CN107249113A CN201710607011.XA CN201710607011A CN107249113A CN 107249113 A CN107249113 A CN 107249113A CN 201710607011 A CN201710607011 A CN 201710607011A CN 107249113 A CN107249113 A CN 107249113A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
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Abstract
The present invention proposes a kind of signal extension system, including：Transmitting terminal chip, and the receiving terminal chip being connected with the transmitting terminal chip；Wherein, the transmitting terminal chip is used to receive HD video data, and the HD video data is carried out successively after color space conversion process, either shallow compression processing and string encoding processing, and the HD video data are sent into the receiving terminal chip；The receiving terminal chip, for receiving the HD video data that the transmitting terminal chip is sent, and the HD video data to reception carry out going here and there successively and after decoding process, either shallow decompression processing, color space conversion process, the HD video data output are played out to display device.System is extended using above-mentioned signal, the transmission range of HD video data can be extended.
Description
Technical field
The present invention relates to signal transmission technology field, more particularly to a kind of signal extension method and system.
Background technology
High-definition media interface (High-Definition Media Interface, HDMI) or high definition display interface
(Displayport, DP) very big advantage is to be brought with uncompressed, lossless high-resolution display characteristic and real-time to user
The hearing experience of high-quality.Wherein, based on HDMI or DP keyboard, video recorder, mouse (Keyboard, Video, Mouse,
KVM) system is the conventional integrated system for providing the user controllable HD video display service.
This high definition picture without compression is, it is necessary to very high data transfer rate, therefore it is in use also to bring this technology
Limitation.Due to high speed signal in cable exponentially rapid decay, HDMI, DP signal of high definition, the especially 4K of ultra high-definition,
8K signal, uses expensive wire rod, can only also transmit several meters of distance, thus largely limit HDMI, DP
Deng the application shown without compression, lossless high definition.
The limitation of high-definition data transmission distance is limited to, building for kvm system can only also provide the user the height of small range
Clear video display service.Accordingly, it would be desirable to which effective signal extension circuit system, extends the transmission range of high-definition signal, realizes more
The HD video data transfer of long range.
The content of the invention
Defect and deficiency based on prior art, the present invention propose a kind of signal extension method and system, can extend height
The transmission range of clear signal, realizes the HD video data transfer of longer distance.
A kind of signal extends system, including：
Transmitting terminal chip, and the receiving terminal chip being connected with the transmitting terminal chip；
Wherein, the transmitting terminal chip is used to receive HD video data, and the HD video data are entered successively
After row color space conversion process, either shallow compression processing and string encoding processing, the HD video data are sent to described connect
Receiving end chip；
The receiving terminal chip, for receiving the HD video data that the transmitting terminal chip is sent, and to reception
HD video data carry out going here and there successively and after decoding process, either shallow decompression processing, color space conversion process, the high definition are regarded
Frequency data output is shown to display device.
Preferably, the transmitting terminal chip includes：
Data reception module, for receiving HD video packet；
The protocol logic module being connected with the data reception module, for the high definition received to the data reception module
Video data bag carries out agreement unpacking processing, obtains HD video data；
The color space conversion module being connected with the protocol logic module, for what is sent to the protocol logic module
HD video data carry out color space conversion process；
The either shallow data compressing module being connected with the color space conversion module, for the color space modulus of conversion
What block was sent, the HD video data after color space conversion process are carried out, either shallow data compression process is carried out；
The general SERDES coding parallel serial conversion modules being connected with the either shallow data compressing module, for the either shallow
HD video data after the compression processing that data compressing module is sent are encoded and parallel-serial conversion processing；
The data transmission blocks being connected with the general SERDES coding parallel serial conversion module, for will be described general
The serial HD video data that SERDES coding parallel serial conversion modules are sent are sent to the receiving terminal chip.
Preferably, the receiving terminal chip includes：
Signal receiving module, for receiving the HD video data that the transmitting terminal chip is sent；
The general SERDES decoding serioparallel exchange modules being connected with the signal receiving module, for being received to the signal
The HD video data that module is received are decoded and serioparallel exchange processing；
The data decompression module being connected with the general SERDES decodings serioparallel exchange module, for described general
The HD video data that SERDES decoding serioparallel exchange modules are sent carry out decompression；
The color conversion being connected with the data decompression module, for what is sent to the data decompression module
HD video data carry out color space conversion process；
The protocol groups bag module being connected with the color conversion, for the color sent to the color conversion
HD video data after the conversion of space carry out protocol groups bag processing, obtain HD video packet；
The signal transmitting module being connected with the protocol groups bag module, for the high definition for sending the protocol groups bag module
Video data bag is sent to display device and shown.
Preferably, the system also includes：
The two-way usb signal extension chip of two interconnections, for transmitting usb signal and control signal.
Preferably, the two-way usb signal extension chip of described two interconnections is connected by a pair of differential lines.
Preferably, connected between the transmitting terminal chip and the receiving terminal chip by differential lines.
Preferably, connected between the transmitting terminal chip and the receiving terminal chip by 3 pairs or less than 3 pairs of differential lines
Connect.
Preferably, the transmitting terminal chip and the receiving terminal chip are respectively asic chip or fpga chip.
A kind of signal extends method, and applied to data transmitting terminal, this method includes：
Receive HD video data；
The HD video data are carried out with color space conversion process, either shallow compression processing, coded treatment and simultaneously successively
String conversion process；
The HD video data after processing are sent to data receiver, make the data receiver to the high definition
Video data is handled, and the HD video data are sent into display device played out.
Preferably, this method also includes：
Control signal is received, and the control signal is sent to data receiver.
A kind of signal extends method, and applied to data receiver, this method includes：
Receive the HD video data that data transmitting terminal is sent；The HD video data are that the data transmitting terminal passes through
HD video data after color space conversion process, either shallow compression processing, coded treatment and parallel-serial conversion processing；
The HD video data are carried out with decoding process, serioparallel exchange processing, decompression, color space turn successively
Change processing；
The HD video data after processing are sent to display device, the display device is played the high definition and regards
Frequency evidence.
Preferably, this method also includes：
The control signal that the data transmitting terminal is sent is received, and the control signal is sent to the display device,
Make the display device according to the control signal, control the playing process to the HD video data.
Signal proposed by the present invention extends system, is mainly made up of the transceiving chip of two interconnections.One chip is used
In being carried out to HD video data after color space conversion process, either shallow compression processing and string encoding processing, by HD video number
It is believed that number being transmitted to another chip, another chip receives HD video data-signal, and HD video data are gone here and there
And after decoding process, either shallow decompression processing, color space conversion process, export and played out to display device.Above-mentioned color is empty
Between conversion process and either shallow compression processing can on the premise of video image quality is not influenceed, reduce data bandwidth, so as to
So that the transmission range of HD video data is longer.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the structural representation that a kind of signal provided in an embodiment of the present invention extends system；
Fig. 2 is the structural representation that another signal provided in an embodiment of the present invention extends system；
Fig. 3 is the structural representation that another signal provided in an embodiment of the present invention extends system；
Fig. 4 is the structural representation that another signal provided in an embodiment of the present invention extends system；
Fig. 5 is the schematic flow sheet that a kind of signal provided in an embodiment of the present invention extends method；
Fig. 6 is the schematic flow sheet that another signal provided in an embodiment of the present invention extends method.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Extend system the embodiment of the invention discloses a kind of signal, shown in Figure 1, the system includes：
Transmitting terminal chip 101, and the receiving terminal chip 102 being connected with transmitting terminal chip 101；
Specifically, transmitting terminal chip 101 and receiving terminal chip 102 are mainly used in carrying out necessary processing to signal, and
Realize the transmitting-receiving of signal.Transmitting terminal chip 101 and receiving terminal chip 102 are arranged in different places, by data between the two
Connecting line realizes the conduction to signal.
Wherein, transmitting terminal chip 101 is used to receive HD video data, and the HD video data are carried out successively
After color space conversion process, either shallow compression processing and string encoding processing, the HD video data are sent to receiving terminal core
Piece 102；
Specifically, the HD video data that transmitting terminal chip 101 is received are the height received by HDMI ports or DP ports
Clear video data bag, carries out protocol analysis processing, you can obtain HD video data to the HD video packet.
Color space conversion process, can reduce the color depth of HD video data, so as to reduce the number of HD video data
According to rate.And either shallow compression is handled, 8 can be done up on the premise of picture quality is not influenceed:1 bit stream data compression
Than the bandwidth required for reduction bit stream.
And string encoding is handled, refer to carry out HD video data coded treatment, and carry out parallel-serial conversion processing, will simultaneously
Row data are converted to serial data.
Finally, transmitting terminal chip 101 is that the serial HD video data after processing are sent into receiving terminal chip 102.
Receiving terminal chip 102, the HD video data for receiving the transmission of transmitting terminal chip 101, and to the height of reception
Clear video data carries out going here and there successively and after decoding process, either shallow decompression processing, color space conversion process, by the HD video
Data output is played out to display device.
Specifically, the transmitting terminal and receiving terminal of the signal extension system that the embodiment of the present invention is proposed are equalization framework, i.e.,
The composition of receiving terminal chip 102, the composition with transmitting terminal chip 101 is balance and symmetry form.With transmitting terminal chip 101 to high definition
Video data carries out color space conversion, either shallow compression, coding and parallel-serial conversion and handles corresponding, 102 pairs of receiving terminal chip
The HD video data that transmitting terminal chip 101 is sent carry out serioparallel exchange processing, decoding process, decompression and again
Color space conversion process, the color space of HD video data is converted to original color space, realize to receive
HD video data recovery.
Finally, receiving terminal chip 102 plays out the HD video data output of recovery to display device.Receiving terminal core
The HD video data that piece 102 is recovered are identical with the HD video data that transmitting terminal chip 101 is received.
The signal extension system that the embodiment of the present invention is proposed, is mainly made up of the transceiving chip of two interconnections.One
Chip is used to carry out HD video data after color space conversion process, either shallow compression processing and string encoding processing, by high definition
Video data signal is transmitted to another chip, and another chip receives HD video data-signal, and to HD video data
Progress is gone here and there and after decoding process, either shallow decompression processing, color space conversion process, exports and played out to display device.It is above-mentioned
Color space conversion process and either shallow compression processing can reduce data bandwidth on the premise of video image quality is not influenceed,
So as to so that the transmission range of HD video data is longer.
Optionally, in another embodiment of the present invention, shown in Figure 2, transmitting terminal chip 101 includes：
Data reception module 1011, for receiving HD video packet；
Specifically, the inside of data reception module 1011 includes data receiver circuit, the circuit and HDMI ports or DP ports
Connection, receives the HD video packet exported from HDMI ports or DP ports.
The protocol logic module 1012 being connected with data reception module 1011, for what is received to data reception module 1011
HD video packet carries out agreement unpacking processing, obtains HD video data；
Specifically, data reception module 1011 is received after HD video packet, HD video packet is sent to association
Logic module 1012 is discussed, the HD video packet of 1012 pairs of receptions of protocol logic module is carried out at unpacking according to the agreement of regulation
Reason, obtains the HD video data included in packet.
The color space conversion module 1013 being connected with protocol logic module 1012, for sending out protocol logic module 1012
The HD video data sent carry out color space conversion process；
Specifically, the HD video data that unpacking is obtained are sent to color space conversion module by protocol logic module 1012
1013, color space conversion module 1013 is changed to the color space of HD video data.Actually implementing skill of the present invention
During art scheme, the letter that engineer can support according to display device resolution requirement, wire rod quality and length, transmitting terminal signal source
Number form, chooses whether 4 in being changed using color space：4:4-→4:2:2 or 4：4:4-→4:2:0 conversion.Color
Space conversion can reduce the color depth of HD video data, so as to reduce data bandwidth.
It should be noted that according to actual use demand, color space conversion can not also be carried out to HD video data
Processing, now rejects the color space conversion module 1013 in transmitting terminal chip 101, or control color space conversion module 1013
Do not work.
The either shallow data compressing module 1014 being connected with color space conversion module 1013, for color space modulus of conversion
What block 1013 was sent, the HD video data after color space conversion process are carried out, either shallow data compression process is carried out；
Specifically, color space conversion module 1013 is carried out after color space conversion to HD video data, high definition is regarded
Frequency evidence is sent to either shallow data compressing module 1014.Either shallow data compressing module 1014 carries out either shallow pressure to HD video data
Contracting is handled, and in actual use, according to data transfer demands, compression ratio (1,2,3,4) can be set, further to reduce video
The bandwidth of code stream, while ensureing higher image quality.
It should be noted that according to actual data transfer rate and the demand of distance, can also save to HD video number
The step of according to processing is compressed, that is, omit either shallow data compressing module 1014.
The general SERDES coding parallel serial conversion modules 1015 being connected with either shallow data compressing module 1014, for either shallow
HD video data after the compression processing that data compressing module 1014 is sent are encoded and parallel-serial conversion processing；
Specifically, the HD video data after either shallow data compressing module 1014 compresses either shallow are sent to general SERDES
Parallel serial conversion module 1015 is encoded, general SERDES coding parallel serial conversion modules 1015 are to the HD video data after either shallow compression
Encoded and parallel-serial conversion processing, by HD video data conversion into the serial data after coding.
The data transmission blocks 1016 that are connected of parallel serial conversion module 1015 are encoded with general SERDES, for will be general
The serial HD video data that SERDES coding parallel serial conversion modules are sent are sent to receiving terminal chip 102.
Specifically, serial HD video data are sent to data and sent out by general SERDES coding parallel serial conversion modules 1015
Module 1016 is sent, makes data transmission blocks 1016 that serial HD video data are sent into receiving terminal chip 102.
Optionally, in another embodiment of the present invention, shown in Figure 3, receiving terminal chip 102 includes：
Signal receiving module 1021, the HD video data for receiving the transmission of transmitting terminal chip 101；
The general SERDES decoding serioparallel exchange modules 1022 being connected with signal receiving module 1021, for being received to signal
The HD video data that module 1021 is received are decoded and serioparallel exchange processing；
The data decompression module 1023 that serioparallel exchange module 1022 is connected is decoded with general SERDES, for general
The HD video data that SERDES decoding serioparallel exchange modules 1022 are sent carry out decompression；
The color conversion 1024 being connected with data decompression module 1023, for sending out data decompression module 1023
The HD video data sent carry out color space conversion process；
The protocol groups bag module 1025 being connected with color conversion 1024, for what is sent to color conversion 1024
HD video data after color space conversion carry out protocol groups bag processing, obtain HD video packet；
The signal transmitting module 1026 being connected with protocol groups bag module 1025, for send protocol groups bag module 1025
HD video packet is sent to display device and played out.
Specifically, the composition structure of receiving terminal chip 102, the internal structure with transmitting terminal chip 101 is balance and symmetry
Structure.Signal receiving module 1021, general SERDES decodings serioparallel exchange module 1022 in receiving terminal chip 102, data solution
The processing that compression module 1023, color conversion 1024, protocol groups bag module 1025, signal transmitting module 1026 are carried out,
The processing that modules corresponding with transmitting terminal chip 101 are carried out is identical.
It should be noted that when mechanism of the transmitting terminal chip 101 to HD video data progress color space conversion process,
After the compression ratio for compressing processing with either shallow is determined, the data decompression module 1023 in receiving terminal chip 102, color conversion
The compression ratio that 1024 pairs of video datas are decompressed, and carry out the mechanism of color space conversion, it is necessary to it is shallow with transmitting terminal
The compression ratio of degree compression processing, it is identical with the mechanism of color conversion process, so that receiving terminal chip 102 can be recovered correctly
HD video data.
Optionally, in another embodiment of the present invention, shown in Figure 4, the system also includes：
The two-way usb signal extension chip 103 of two interconnections, for transmission of control signals.
Specifically, above-mentioned two-way usb signal extension chip 103 is the two-way USB2.0 extenders asic chip improved,
It is specifically used to extend other control signals such as usb signal and the DDC/AUX Jing Guo specially treated.
In kvm system, image is shown by keyboard and mouse control display device.Therefore, the embodiment of the present invention is utilized
A pair of two-way usb signals extension chips 103 realize the extension transmission to control signal so that can be realized in kvm system pair
The control that HD video is played.
Optionally, in another embodiment of the present invention, the two-way usb signal extension chip of described two interconnections
103 are connected by a pair of differential lines.
Specifically, in embodiments of the present invention, being connected between two two-way usb signal extension chips by a pair of differential lines
Connect, can be specifically common CAT cables, including CAT5e, CAT6 cable etc..
Optionally, in another embodiment of the present invention, pass through between transmitting terminal chip 101 and receiving terminal chip 102
Differential lines are connected.
Specifically, in embodiments of the present invention, conventional differential is passed through between transmitting terminal chip 101 and receiving terminal chip 102
Line is connected, and can be specifically common CAT cables, including CAT5e, CAT6 cable etc..
Optionally, in another embodiment of the present invention, 3 are passed through between transmitting terminal chip 101 and receiving terminal chip 102
Pair or less than 3 pairs differential lines connection.
Specifically, in embodiments of the present invention, transmitting terminal chip 101 and receiving terminal chip 102 pass through 3 pairs or less than 3 pairs
Differential lines connection, can be specifically to be connected by the differential lines of 3 couple in CAT cables or less than 3 pairs.So, in CAT cables
Middle remaining a pair of differential lines can be for transmission of control signals, and therefore, the signal proposed using the embodiment of the present invention, which is extended, is
System, only just can more easily realize building for kvm system with a CAT cable.
Optionally, in another embodiment of the present invention, transmitting terminal chip 101 and receiving terminal chip 102 are respectively
Asic chip or fpga chip.
Specifically, in the embodiment of the present invention, the concrete form of transmitting terminal chip 101 and receiving terminal chip 102 can be special
With chip (Application Specific Integrated Circuit, ASIC) or field programmable gate array
(Field Programmable Gate Array, FPGA) chip.
Extend method, shown in Figure 5 applied to data transmitting terminal, the party the embodiment of the invention discloses a kind of signal
Method includes：
S501, reception HD video data；
Specifically, data transmitting terminal receives HD video packet from HDMI ports or DP ports, to the HD video number
Protocol analysis processing is carried out according to bag, you can obtain HD video data.
S502, the HD video data are carried out with color space conversion process, either shallow compression processing, coded treatment successively
And parallel-serial conversion processing；
Specifically, when actually implementing technical solution of the present invention, engineer can be according to display device resolution requirement, line
Material quality and length, the signal format that transmitting terminal signal source is supported choose whether 4 in being changed using color space：4:4-→
4:2:2 or 4：4:4-→4:2:0 conversion.Color space conversion can reduce the color depth of HD video data, so as to reduce
Data bandwidth.
In actual use,, can be with according to data transfer demands when carrying out either shallow compression to HD video data and handling
Compression ratio (1,2,3,4) is set, further to reduce the bandwidth of video code flow, while ensureing higher image quality.
It should be noted that when implementing using technical scheme of the embodiment of the present invention, can be selected according to data transfer demands
Select and whether HD video data are carried out with color space conversion process and either shallow compression processing.
After HD video data are carried out with color space conversion process, either shallow compression processing, proceed coding
Processing, and parallel-serial conversion processing, by HD video data conversion into the serial data after coding.
S503, the HD video data after processing are sent to data receiver, make the data receiver to institute
State HD video data to be handled, and the HD video data are sent to display device and play out.
Specifically, data transmitting terminal is by 3 pairs or less than 3 pairs of differential lines, by the high definition after step S502 processing
Video data is sent to data receiver.Above-mentioned 3 pairs or less than 3 pairs of differential lines, can be specifically by 3 in CAT cables
Pair or less than 3 pairs of differential lines.
The signal proposed using the embodiment of the present invention extends method, and color is carried out to high-definition video signal in data transmitting terminal
Space conversion process, either shallow compression processing, reduce HD video data bandwidth, while ensureing picture quality, are then connect in data
Receiving end is recovered to the HD video data after processing again, obtains original HD video data, is regarded so as to extend high definition
The transmission range of frequency evidence.
Optionally, in another embodiment of the present invention, this method also includes：
Control signal is received, and the control signal is sent to data receiver.
Specifically, in embodiments of the present invention, also achieving the transmission to control signal.The transmission of control signal and high definition
The transmitting procedure of video data is similar, first receives control signal by the usb signal extension chip of data transmitting terminal, then passes through one
Differential lines are transferred to the usb signal extension chip of data receiver, the extension transmission of control signal is realized.
Extend method the embodiment of the invention discloses another signal, it is shown in Figure 6 applied to data receiver, should
Method includes：
S601, the HD video data for receiving the transmission of data transmitting terminal；The HD video data are the data transmittings
Hold the HD video data after the processing of color space conversion process, either shallow compression processing, coded treatment and parallel-serial conversion；
Specifically, in embodiments of the present invention, data transmitting terminal receives HD video data first, then to HD video
Data carry out color space conversion process, either shallow compression processing, coded treatment and parallel-serial conversion processing.
The letter that engineer can support according to display device resolution requirement, wire rod quality and length, transmitting terminal signal source
Number form, chooses whether 4 in being changed using color space：4:4-→4:2:2 or 4：4:4-→4:2:0 conversion.Color
Space conversion can reduce the color depth of HD video data, so as to reduce data bandwidth.
In actual use,, can be with according to data transfer demands when carrying out either shallow compression to HD video data and handling
Compression ratio (1,2,3,4) is set, further to reduce the bandwidth of video code flow, while ensureing higher image quality.
After HD video data are carried out with color space conversion process, either shallow compression processing, proceed coding
Processing, and parallel-serial conversion processing, by HD video data conversion into the serial data after coding.
Finally, the HD video data after processing are sent to data receiver by data transmitting terminal.
S602, the HD video data are carried out with decoding process, serioparallel exchange processing, decompression, color successively
Space conversion process；
Specifically, data receiver is after the HD video data after treatment of data transmitting terminal transmission are received,
Decoding process, serioparallel exchange processing, decompression, color space conversion process are carried out to data, the data of reception are recovered
Into original HD video data.
S603, the HD video data after processing are sent to display device, play the display device described
HD video data.
Specifically, the HD video data of recovery are packaged into HD video packet by data receiver, and it is sent to aobvious
Show equipment, display device is played the HD video in HD video packet.
The signal proposed using the embodiment of the present invention extends method, and color is carried out to high-definition video signal in data transmitting terminal
Space conversion process, either shallow compression processing, reduce HD video data bandwidth, while ensureing picture quality, are then connect in data
Receiving end is recovered to the HD video data after processing again, obtains original HD video data, is regarded so as to extend high definition
The transmission range of frequency evidence.
Optionally, in another embodiment of the present invention, this method also includes：
The control signal that the data transmitting terminal is sent is received, and the control signal is sent to the display device,
Make the display device according to the control signal, control the playing process to the HD video data.
Specifically, in embodiments of the present invention, also achieving the transmission to control signal.The transmission of control signal and high definition
The transmitting procedure of video data is similar, first receives control signal by the usb signal extension chip of data transmitting terminal, then passes through one
Differential lines are transferred to the usb signal extension chip of data receiver, the extension transmission of control signal is realized.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (12)
1. a kind of signal extends system, it is characterised in that including：
Transmitting terminal chip, and the receiving terminal chip being connected with the transmitting terminal chip；
Wherein, the transmitting terminal chip is used to receive HD video data, and carries out color successively to the HD video data
After color space conversion process, either shallow compression processing and string encoding processing, the HD video data are sent to the receiving terminal
Chip；
The receiving terminal chip, for receiving the HD video data that the transmitting terminal chip is sent, and to the high definition of reception
Video data carries out going here and there successively and after decoding process, either shallow decompression processing, color space conversion process, by the HD video number
Shown according to output to display device.
2. system according to claim 1, it is characterised in that the transmitting terminal chip includes：
Data reception module, for receiving HD video packet；
The protocol logic module being connected with the data reception module, for the HD video received to the data reception module
Packet carries out agreement unpacking processing, obtains HD video data；
The color space conversion module being connected with the protocol logic module, for the high definition sent to the protocol logic module
Video data carries out color space conversion process；
The either shallow data compressing module being connected with the color space conversion module, for sending out the color space conversion module
Send, carry out the HD video data after color space conversion process, carry out either shallow data compression process；
The general SERDES coding parallel serial conversion modules being connected with the either shallow data compressing module, for the either shallow data
HD video data after the compression processing that compression module is sent are encoded and parallel-serial conversion processing；
The data transmission blocks being connected with the general SERDES codings parallel serial conversion module, for the general SERDES to be compiled
The serial HD video data that code parallel serial conversion module is sent are sent to the receiving terminal chip.
3. according to the method described in claim 1, it is characterised in that the receiving terminal chip includes：
Signal receiving module, for receiving the HD video data that the transmitting terminal chip is sent；
The general SERDES decoding serioparallel exchange modules being connected with the signal receiving module, for the signal receiving module
The HD video data of reception are decoded and serioparallel exchange processing；
The data decompression module being connected with the general SERDES decodings serioparallel exchange module, for the general SERDES
Decode the HD video data progress decompression that serioparallel exchange module is sent；
The color conversion being connected with the data decompression module, for the high definition sent to the data decompression module
Video data carries out color space conversion process；
The protocol groups bag module being connected with the color conversion, for the color space sent to the color conversion
HD video data after conversion carry out protocol groups bag processing, obtain HD video packet；
The signal transmitting module being connected with the protocol groups bag module, for the HD video for sending the protocol groups bag module
Packet is sent to display device and shown.
4. system according to claim 1, it is characterised in that the system also includes：
The two-way usb signal extension chip of two interconnections, for transmitting usb signal and control signal.
5. system according to claim 4, it is characterised in that the two-way usb signal extension core of described two interconnections
Piece is connected by a pair of differential lines.
6. system according to claim 1, it is characterised in that lead between the transmitting terminal chip and the receiving terminal chip
Cross differential lines connection.
7. system according to claim 6, it is characterised in that lead between the transmitting terminal chip and the receiving terminal chip
The differential lines for crossing 3 pairs or less than 3 pairs are connected.
8. system according to claim 1, it is characterised in that the transmitting terminal chip and the receiving terminal chip are respectively
Asic chip or fpga chip.
9. a kind of signal extends method, it is characterised in that applied to data transmitting terminal, this method includes：
Receive HD video data；
The HD video data are carried out with color space conversion process, either shallow compression processing, coded treatment and and string turn successively
Change processing；
The HD video data after processing are sent to data receiver, make the data receiver to the HD video
Data are handled, and the HD video data are sent into display device played out.
10. method according to claim 9, it is characterised in that this method also includes：
Control signal is received, and the control signal is sent to data receiver.
11. a kind of signal extends method, it is characterised in that applied to data receiver, this method includes：
Receive the HD video data that data transmitting terminal is sent；The HD video data are that the data transmitting terminal passes through color
HD video data after space conversion process, either shallow compression processing, coded treatment and parallel-serial conversion processing；
The HD video data are carried out successively decoding process, serioparallel exchange processing, decompression, at color space conversion
Reason；
The HD video data after processing are sent to display device, the display device is played the HD video number
According to.
12. method according to claim 11, it is characterised in that this method also includes：
The control signal that the data transmitting terminal is sent is received, and the control signal is sent to the display device, makes institute
Display device is stated according to the control signal, the playing process to the HD video data is controlled.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607011.XA CN107249113B (en) | 2017-07-24 | 2017-07-24 | Signal extension method and system |
| TW106140889A TW201909622A (en) | 2017-07-24 | 2017-11-24 | A signal extension method and system |
| US16/032,600 US10602170B2 (en) | 2017-07-24 | 2018-07-11 | Signal extension method and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607011.XA CN107249113B (en) | 2017-07-24 | 2017-07-24 | Signal extension method and system |
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| CN107249113A true CN107249113A (en) | 2017-10-13 |
| CN107249113B CN107249113B (en) | 2023-07-18 |
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| CN201710607011.XA Active CN107249113B (en) | 2017-07-24 | 2017-07-24 | Signal extension method and system |
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Cited By (1)
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| WO2022116352A1 (en) * | 2020-12-01 | 2022-06-09 | 威创集团股份有限公司 | 4k high-definition receiver box and video output system thereof |
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| CN107249113B (en) | 2023-07-18 |
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