CN102025984A - Data transmission device, data receiving device and data transmission system - Google Patents
Data transmission device, data receiving device and data transmission system Download PDFInfo
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- CN102025984A CN102025984A CN 200910173793 CN200910173793A CN102025984A CN 102025984 A CN102025984 A CN 102025984A CN 200910173793 CN200910173793 CN 200910173793 CN 200910173793 A CN200910173793 A CN 200910173793A CN 102025984 A CN102025984 A CN 102025984A
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Abstract
The present invention provides a data transmission device and a data receiving device. The data transmission device comprises a data reconstruction unit and a transmission interface. The data reconstruction unit is used for receiving first data and performing data construction for the first data for reducing the change rate of the binary number in the first data and generating the second data. The transmission interface is coupled to the data reconstruction unit for transmitting the second data through a transmission channel. The data receiving device comprises a receiving interface and a data anti-reconstruction unit. The present invention also provides a data transmission system. The data transmission device, the data receiving device and the data transmission system according to the invention can improve transmission efficiency, reduces electromagnetic radiation interference, reduces data size in image transmission and sustains the image quality.
Description
Technical field
The present invention relates to a kind of data transmission architecture, refer to a kind of can raising the transmission usefulness and reduce electromagnetic interference (Electromagnetic interference, data link EMI) and relevant data sink and data-transmission system especially.
Background technology
Along with development of science and technology, more and more higher for the requirement of image on resolution, yet the transmission that comprises high resolution image data tend to take a large amount of frequency ranges, cause the burden on the transmitting bandwidth and when images, cause delay easily.For instance, if the resolution of display format is 1024 * 768 pixels, and broadcasting speed is per second 30 frames (Frame), then the required frequency range of image transmission is about (1024+512 * 2) * 768 * 30 * 8=377Mbps (Mbit/second), and this is great burden for the transmittability of general employed image data transmission device.In addition, high resolution image data because the frequency change of signal is bigger, also can be subjected to more serious electromagnetic interference and consumes a large amount of through-put powers in transmission course.
In order to solve the above problems, traditional mode is that view data is compressed, but if require the data volume size of image need be compressed within some scopes, then may therefore destroy the quality (for example the image record being carried out the destructiveness compression) of image.In addition, the Japan vertical differential encoding that company delivered (the Vertically Differential Encoding of Toshiba (Toshiba), VDE) can effectively reduce electromagnetic interference and power consumption, and vertical differential encoding is defined as: the horizontal view data output of article one in the view data of a picture is not converted change, vertical data relativeness in two adjacent levels (Horizontal) line image data, article one, the horizontal image data are that benchmark is constant, by second horizontal image data minus article one horizontal image data, article three, horizontal image data minus second horizontal image data, horizontal image data minus second from the bottom horizontal image data to the last so in regular turn.If image similarity is very high, the numerical value after then view data is subtracted each other can be similar to zero.When the signal of view data on transmission channel changes very for a short time, then can effectively reduce electromagnetic interference, but this vertical differential encoding is when image similarity is not high, effect is quite limited.
Therefore, how to design a kind of data transmission architecture that can reduce the image data quantity transmitted and keep picture quality, real is an important problem of present image related industry.
Summary of the invention
Therefore, one of purpose of the present invention is to provide a kind of data link and relevant data sink and data-transmission system that can improve transmission usefulness and reduce electromagnetic interference, to solve the above problems.
According to one embodiment of the present of invention, it has disclosed a kind of data link.This data link includes the data recombination unit and transmits interface.This data recombination unit is in order to receiving first data, and these first data carried out data recombination reduce binary numeral rate of change in these first data, to produce second data.This transmission interface is coupled to this data recombination unit, in order to transmit this second data via transmission channel.
In one embodiment, this data recombination unit by using data map (Data Mirror) mode of this data link is carried out data recombination.
In a kind of preferred implementation, this data link also includes data processing unit, and this data processing unit is coupled to this data recombination unit, produces these first data to this data recombination unit in order to initial data is carried out encoding process.
In another kind of preferred implementation, this data link also includes data processing unit, and this data processing unit is coupled to this data recombination unit, produces these first data to this data recombination unit in order to initial data is compressed handle.
According to another embodiment of the present invention, it has disclosed a kind of data sink.This data sink includes receiving interface and data bob-weight group unit.This receiving interface is in order to receive first data via transmission channel.This data bob-weight group unit is coupled to this receiving interface, receives this first data in order to this receiving interface certainly, and these first data are carried out data bob-weight group increases binary numeral rate of change in these first data, to produce second data.
In one embodiment, this data bob-weight group unit by using data map (Data Mirror) mode in this data sink is carried out data bob-weight group.
In a kind of preferred implementation, this data sink also includes the anti-processing unit of data, and the anti-processing unit of these data is coupled to this data bob-weight group unit, carries out decoding processing in order to these second data that this data bob-weight group unit is produced.
In another kind of preferred implementation, this data sink also includes the anti-processing unit of data, and the anti-processing unit of these data is coupled to this data bob-weight group unit, carries out decompression in order to these second data that this data bob-weight group unit is produced.
According to another embodiment of the present invention, it has disclosed a kind of data transmission system.This data transmission system includes transmission channel, data link and data sink.This data link includes the data recombination unit and transmits interface.This data recombination unit is in order to receiving first data, and these first data carried out data recombination reduce binary numeral rate of change in these first data, to produce second data.This transmission interface is coupled to this data recombination unit, in order to transmit this second data via this transmission channel.This data sink includes receiving interface and data bob-weight group unit.This receiving interface is in order to receive this second data via this transmission channel.This data bob-weight group unit is coupled to this receiving interface, receives this second data in order to this receiving interface certainly, and these second data are carried out data bob-weight group increases binary numeral rate of change in these second data, so that this second reduction of data is become this first data.
In one embodiment, this data recombination unit in this data transmission system and this data bob-weight group unit by using data map (Data Mirror) mode are carried out data recombination and data bob-weight group respectively.
In a kind of preferred implementation, this data link in this data transmission system also includes data processing unit, this data processing unit is coupled to this data recombination unit, produces these first data to this data recombination unit in order to initial data is carried out encoding process; And this data sink in this data transmission system also includes the anti-processing unit of data, the anti-processing unit of these data is coupled to this data bob-weight group unit, carries out decoding processing so that this first reduction of data is become this initial data in order to these first data that this data bob-weight group unit is reduced.
In another kind of preferred implementation, this data link in this data transmission system also includes data processing unit, this data processing unit is coupled to this data recombination unit, produces these first data to this data recombination unit in order to initial data is compressed handle; And this data sink in this data transmission system also includes the anti-processing unit of data, the anti-processing unit of these data is coupled to this data bob-weight group unit, carries out decompression so that this first reduction of data is become this initial data in order to these first data that this data bob-weight group unit is reduced.
Description of drawings
Fig. 1 is the schematic diagram of an embodiment of data transmission system of the present invention.
Fig. 2 is the schematic diagram of an embodiment of data recombination of the present invention/bob-weight group operation.
Fig. 3 utilizes the mode chart of the data that data transmission system transmitted among Fig. 1 for the present invention.
Embodiment
In specification and appending claims, used some vocabulary to censure specific assembly.Those of ordinary skill should be understood in the affiliated field, and hardware manufacturer may be called same element with different nouns.This specification and appending claims are not used as distinguishing the mode of element with the difference of title, but the criterion that is used as distinguishing with the difference of element on function.Be open term mentioned " comprising " in specification and the appended claim in the whole text, so should be construed to " including but not limited to ".In addition, " couple " speech and comprise any indirect means that are electrically connected that directly reach at this.Therefore, be coupled to second device, then represent this first device can directly be electrically connected in this second device, or be electrically connected to this second device indirectly by other device or connection means if describe first device in the literary composition.
Please refer to Fig. 1, Fig. 1 is the schematic diagram of an embodiment of data transmission system 100 of the present invention.Data transmission system 100 includes (but being not limited to) transmission channel 110, data link 120 and data sink 130.Data link 120 includes data processing unit 122, data recombination unit 124 and transmits interface 126.Data processing unit 122 is coupled to data recombination unit 124, produces the first data D1 to data recombination unit 124 in order to initial data D0 is encoded or compress to handle.Note that data processing unit 122 can use any digital coding/compression processing method, the broken shape compression of (Arithmetic) coding, predictive coding, image of encoding, count waits and encodes/packed data as Huffman (Huffman).Data recombination unit 124 is in order to receiving the first data D1, and the first data D1 carried out data recombination reduce binary numeral rate of change among the first data D1, to produce the second data D2.For instance, in the present embodiment, data recombination unit 124 can use the mode of data map (Data Mirror) to carry out data recombination, yet, the present invention is not limited to this, and any data recombination mechanism that reduces binary numeral change frequency in the data all can be adopted by data recombination unit 124.Transmit interface 126 and be coupled to data recombination unit 124, in order to transmit the second data D2 via transmission channel 110, wherein transmission channel 110 can be wired transmission medium (for example transmission line) or wireless transmission medium (for example radio wave).
Please refer to Fig. 2, Fig. 2 is the schematic diagram of an embodiment of data recombination of the present invention/bob-weight group operation.As shown in Figure 2, an embodiment of data recombination operation of the present invention adopts the data map mode to carry out, so that have the characteristic that data back is arranged between first byte and second byte, suppose that four passage ch0～ch3 carry out transfer of data according to a clock pulse CLK respectively, in the first byte clock pulse cycle, (wherein bit0 is a least significant bit to the first stroke data b it0～bit7, bit7 is a highest significant position) can rearrangement make each transmission sequence be: bit7 → bit6 → bit5 → bit4 → bit3 → bit2 → bit1 → bit0, and in the second byte clock pulse cycle, the transmission sequence that is right after the first stroke data second data bit0～bit7 (wherein bit0 is a least significant bit, and bit7 is a highest significant position) afterwards is: bit0 → bit1 → bit2 → bit3 → bit4 → bit5 → bit6 → bit7.In like manner, an embodiment of data bob-weight group operation of the present invention just adopts data map reduction mode to carry out, in the first byte clock pulse cycle, (wherein bit0 is a least significant bit to the first stroke data b it0～bit7, bit7 is a highest significant position) can rearrangement make each actual reception be in proper order: bit7 → bit6 → bit5 → bit4 → bit3 → bit2 → bit1 → bit0, and in the second byte clock pulse cycle, the reception that is right after the first stroke data second data bit0～bit7 (wherein bit0 is a least significant bit, and bit7 is a highest significant position) afterwards is in proper order: bit0 → bit1 → bit2 → bit3 → bit4 → bit5 → bit6 → bit7.Please note, the running of above-mentioned data map and data map reduction is the usefulness of explanation as an example only, be not to be used as restrictive condition of the present invention, if can reach the purpose that reduces binary numeral change frequency in the data equally, the running of other data map and data map reduction also is feasible.
Please also refer to Fig. 1, Fig. 2 and Fig. 3.Fig. 3 utilizes the mode chart of the data that the data transmission system 100 among Fig. 1 transmitted for the present invention.In this embodiment, data processing unit 122 uses the surplus rotation of fast discrete to change (Fast Discrete Cosine Transform, FDTC) algorithm carries out data processing, the anti-processing unit 136 of data uses discrete surplus inverse transform (the Inverse Discrete Cosine Transform that revolves, IDCT) algorithm carries out data processing, data recombination unit 124 uses data map mode (as shown in Figure 2) to carry out data recombination and data bob-weight group unit 134 use data reflect that penetrating mode (as shown in Figure 2) carries out data bob-weight group, and the content numerical value of initial data D0 is the numerical value EE of two hexadecimal systems.When data processing unit 122 receives initial data D0, the content numerical value of initial data D0 is EEEE (data waveform is shown in the 3rd (a) figure), data processing unit 122 carries out the surplus rotation of fast discrete with initial data D0 and changes to handle and produce the first data D 1 and deliver to data recombination unit 124, and wherein the content numerical value of the first data D1 is compressed to E0E0 (data waveform is shown in the 3rd (b) figure).After data recombination unit 124 receives the first data D1, the first data D1 is carried out data map produce the second data D2 and deliver to transmission interface 126, this moment, the content numerical value of the second data D2 was 07E0 (data waveform is shown in Fig. 3 (c)).Afterwards, transmit interface 126 and just transmit the second data D2 to receiving interface 132 by transmission channel 110.Data bob-weight group unit 134 receives the second data D2 (data waveform is shown in Fig. 3 (c)) from receiving interface 132, and the second data D2 is carried out the data map reduction the second data D2 is reduced into the first data D1 (data waveform is shown in Fig. 3 (b)).At last, the anti-processing unit 136 of data the first data D1 that data bob-weight group unit 134 the is reduced surplus inverse transform of revolving that disperses is handled the first data D 1 is reduced into initial data D0 (data waveform is shown in Fig. 3 (a)).Please note, in an embodiment of the present invention, data transmission system 100 uses discrete surplus rotation to change (Discrete Cosine Transform, DCT) and data map carry out data processing, but this is not restriction of the present invention, and other data processing method that can reach identical function all belongs to scope of the present invention.
Convert initial data D0 (content numerical value is EEEE) to the second data D2 (content numerical value is 07E0) afterwards through data transmission system 100, the numerical value of data diminishes and reduces in data variation (by logical value " 0 " change " 1 " or logical value " 1 " change " the 0 ") frequency of transmission channel, the data variation frequency reduces the wave form varies of representative on transmission channel 110 and also reduces, so can reduce the electromagnetic interference on the transmission channel 110, and can reduce the consumption of power and improve total system usefulness.
The above only is the preferred embodiments of the present invention, and all equivalent variations and modifications of making according to claim of the present invention all should belong to covering scope of the present invention.
The primary clustering symbol description
100 data transmission systems, 110 transmission channels
120 data links, 122 data processing units
124 data recombination unit 126 transmit the interface
130 data sinks, 132 receiving interfaces
The anti-processing unit of 134 data bob-weight group unit 136 data.
Claims (12)
1. data link includes:
The data recombination unit in order to receiving first data, and carries out data recombination to described first data and reduces binary numeral rate of change in described first data, to produce second data; And
Transmit interface, be coupled to described data recombination unit, in order to transmit described second data via transmission channel.
2. data link according to claim 1, wherein, described data recombination unit by using data map mode is carried out data recombination.
3. data link according to claim 1 also includes:
Data processing unit is coupled to described data recombination unit, produces described first data to described data recombination unit in order to initial data is carried out encoding process.
4. data link according to claim 1 also includes:
Data processing unit is coupled to described data recombination unit, produces described first data to described data recombination unit in order to initial data is compressed handle.
5. data sink includes:
Receiving interface is in order to receive first data via transmission channel; And
Data bob-weight group unit is coupled to described receiving interface, in order to receiving described first data from described receiving interface, and described first data are carried out data bob-weight group increases binary numeral rate of change in described first data, to produce second data.
6. data sink according to claim 5, wherein, described data bob-weight group unit by using data map mode is carried out data bob-weight group.
7. data sink according to claim 5 also includes:
The anti-processing unit of data is coupled to described data bob-weight group unit, carries out decoding processing in order to described second data that described data bob-weight group unit is produced.
8. data sink according to claim 5 also includes:
The anti-processing unit of data is coupled to described data bob-weight group unit, carries out decompression in order to described second data that described data bob-weight group unit is produced.
9. data transmission system includes:
Transmission channel;
Data link includes:
The data recombination unit in order to receiving first data, and carries out data recombination to described first data and reduces binary numeral rate of change in described first data, to produce second data; And
Transmit interface, be coupled to described data recombination unit, in order to transmit described second data via described transmission channel; And
Data sink includes:
Receiving interface is in order to receive described second data via described transmission channel; And
Data bob-weight group unit, be coupled to described receiving interface, in order to receiving described second data from described receiving interface, and described second data are carried out data bob-weight group increase binary numeral rate of change in described second data, so that described second reduction of data is become described first data.
10. data transmission system according to claim 9, wherein, described data recombination unit and described data bob-weight group unit by using data map mode are carried out data recombination and data bob-weight group respectively.
11. data transmission system according to claim 9, wherein:
Described data link also includes:
Data processing unit is coupled to described data recombination unit, produces described first data to described data recombination unit in order to initial data is carried out encoding process; And
Described data sink also includes:
The anti-processing unit of data is coupled to described data bob-weight group unit, carries out decoding processing so that described first reduction of data is become described initial data in order to described first data that described data bob-weight group unit is reduced.
12. data transmission system according to claim 9, wherein:
Described data link also includes:
Data processing unit is coupled to described data recombination unit, produces described first data to described data recombination unit in order to initial data is compressed handle; And
Described data sink also includes:
The anti-processing unit of data is coupled to described data bob-weight group unit, carries out decompression so that described first reduction of data is become described initial data in order to described first data that described data bob-weight group unit is reduced.
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| CN 200910173793 CN102025984A (en) | 2009-09-17 | 2009-09-17 | Data transmission device, data receiving device and data transmission system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656981A (en) * | 2014-12-03 | 2016-06-08 | 仁宝电脑工业股份有限公司 | Data transmission method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105656981A (en) * | 2014-12-03 | 2016-06-08 | 仁宝电脑工业股份有限公司 | Data transmission method and system |
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Application publication date: 20110420 |