CN109495747B - Data transmission method and device - Google Patents
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- CN109495747B CN109495747B CN201811619873.5A CN201811619873A CN109495747B CN 109495747 B CN109495747 B CN 109495747B CN 201811619873 A CN201811619873 A CN 201811619873A CN 109495747 B CN109495747 B CN 109495747B
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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
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/146—Data rate or code amount at the encoder output
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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
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/184—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
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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
- H04N19/48—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using compressed domain processing techniques other than decoding, e.g. modification of transform coefficients, variable length coding [VLC] data or run-length data
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Abstract
The application is applicable to the technical field of display, and provides a data transmission method, a data receiving method and a data receiving device, wherein the data comprises M pieces of sub data, each piece of sub data is a bit sequence consisting of N bits, and the transmission method comprises the following steps: detecting the subdata bit by bit from the Nth bit data of the subdata; confirming the same continuous data bit number N as the Nth bit data, and forming an identification bit in the (N-N + 1) th bit data; the identification bit is a data bit different from each bit of data in the subdata; and the data consisting of the 1 st bit to the identification bit is transmitted as compressed data, and the sub data is compressed, so that the data transmission quantity is greatly reduced.
Description
Technical Field
The present application belongs to the field of display technologies, and in particular, to a data transmission method and apparatus.
Background
With the continuous development of science and technology, various display devices are developed, which brings great convenience to the production and life of people. Such as a TFT-LCD (thin film transistor-liquid crystal display).
With the improvement of the resolution and the refresh rate of the display panel, the data transmission amount in the display panel circuit is larger and larger, and the requirement on the data transmission rate is higher and higher, so that the requirement on a transmission medium is higher, and the power consumption of the circuit is increased.
Disclosure of Invention
In view of this, embodiments of the present application provide a data transmission method and apparatus, so as to solve the problems that the resolution and the refresh rate of a display panel are improved, the data transmission amount in a circuit of the display panel is larger and larger, the requirement for the data transmission rate is higher and higher, and thus the requirement for a transmission medium is higher, which causes the power consumption of the circuit to be increased.
The embodiment of the application provides a data transmission method, wherein data to be transmitted comprises M pieces of sub data, each piece of sub data is a bit sequence consisting of N bits, and the transmission method comprises the following steps:
detecting the subdata bit by bit from the Nth bit data of the subdata;
confirming the same continuous data bit number N as the Nth bit data, and forming an identification bit in the (N-N + 1) th bit data; the identification bit is a data bit different from each bit of data in the subdata;
and transmitting the data consisting of the 1 st bit to the identification bit as compressed data.
In one embodiment, the step of determining the number N of consecutive data that is the same as the nth data, and forming the identification bit in the nth-N +1 th data specifically includes:
confirming the value of the Nth bit data;
and if the value of the nth data is 0, forming the identification bit on the nth-N +1 th data.
In one embodiment, the step of determining the number N of consecutive data that is the same as the nth data, and forming the identification bit in the nth-N +1 th data specifically includes:
confirming the value of the Nth bit data;
and if the value of the nth data is 1, forming the identification bit on the nth-N +1 th data.
In one embodiment, the voltage value of the identification bit is greater than the voltage value of bit value 0 and less than the voltage value of bit value 1.
In one embodiment, after transmitting the data consisting of the 1 st bit to the identification bit as compressed data, the method includes:
reading the transmission data, and entering the receiving of the next subdata when reading the identification bit;
restoring the current subdata into N-bit data, and automatically assigning the identification bits of the subdata and the data of each bit behind the identification bits to be the same data.
In one embodiment, the step of automatically assigning the remaining bits of data after the identification bit of the sub-data to be the same data specifically includes:
and automatically assigning the identification bit of the subdata and the data of each bit behind the identification bit to be 0.
In one embodiment, the step of automatically assigning the remaining bits of data after the identification bit of the sub-data to be the same data specifically includes:
and automatically assigning the identification bit of the subdata and the bit data behind the identification bit to be 1.
An embodiment of the present application further provides a data transmission device, where data to be transmitted includes M pieces of sub data, each piece of sub data is a bit sequence composed of N bits, and the data transmission device includes:
a detection unit for detecting the data bit by bit starting from the nth data of the sub data;
an identification bit generation unit for confirming the same continuous data bit number N as the Nth bit data and forming an identification bit in the N-N +1 th bit data;
and the data transmission unit is used for transmitting data consisting of the 1 st bit to the identification bit as compressed data.
In one embodiment, the apparatus for transmitting data further comprises:
the reading unit is used for reading the transmission data and entering the receiving of the next subdata when the identification bit is read;
and the recovery unit is used for recovering the current subdata into N-bit data, and the identification bit of the subdata and each bit of data behind the identification bit are automatically assigned to be the same data.
In one embodiment, the voltage value of the identification bit is greater than the voltage value of the bit value 0 and less than the voltage value of the bit value 1.
The embodiment of the application detects and identifies the sub-data, detects the data bit by bit from the Nth data of the data, detects and confirms the bit number N of continuous data which is the same as the Nth data, forms the identification bit at the (N-N + 1) th data, transmits the data formed by the (1) th bit to the identification bit as compressed data, compresses the sub-data, and greatly reduces the data transmission quantity.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a data transmission method according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a data transmission method according to another embodiment of the present application;
fig. 3 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a data transmission device according to another embodiment of the present application;
fig. 5 is a schematic waveform diagram of sub-data before and after compression of 00001010 according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the drawings described above, are intended to cover non-exclusive inclusions. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
In a display device, each data in the image data is generally represented by a specific 8bit, and in the specific data transmission, only the high level and the low level of the data are taken as 1 and 0 of the data, for example, the amplitude of the differential signal is-200 mV to +200mV, that-200 mV represents 0 and +200mV represents 1, and the transmitting end and the receiving end of the data can complete the transmission of 0 and 1 data. As the definition and refresh rate of the display device are improved, the data amount and transmission rate of the image data are also continuously improved, and thus the requirements on the transmission medium are higher, and the power consumption of the circuit is also increased.
As shown in fig. 1, an embodiment of the present application provides a data transmission method applied to a display device, assuming that compressed data includes M sub-data, each sub-data is a bit sequence consisting of N bits, which greatly reduces the data transmission amount, thereby reducing the transmission frequency and the transmission power consumption, but at the same time, does not cause data loss. The data transmission method provided by the embodiment comprises the following steps:
in step S101, the sub-data is detected bit by bit starting from the nth data of the sub-data.
Step S102, confirming the same continuous data digit N as the Nth digit data, and forming an identification digit on the (N-N + 1) th digit data; the identification bits are data bits different from each bit of data in the subdata.
Step S103, transmitting the data formed by the 1 st bit to the identification bit as compressed data.
It is understood that the data referred to in the present invention may be 24 true color pixel data, which includes 3 sub-pixel data, each of which includes 8bit sequences. In each sub-pixel data, binary data in which an 8-bit sequence is composed of 0 and 1, for example, pixel data corresponding to a pixel having a grayscale of 10 is 00001101.
In practical applications, there is a large amount of data, and the number of bits required for each sub-pixel is usually less than 8 bits, i.e. the effective bits of each sub-pixel are usually less than 8 bits, and the existing data is usually transmitted in the form of 8 bits, and as the data increases, the data transmission amount will increase greatly. The data transmission method provided by the invention can effectively reduce the bit number occupied by the data. After the compression mode provided by the invention is adopted to compress the data, only effective bit data can be transmitted when the data is transmitted, so that the bit number occupied by the data is greatly reduced, and the transmission quantity of the image data can be reduced.
For different data, the compressed sub data has different number of bits according to each bit of the sub data, and the number of bits of the compressed sub data may be varied from one to eight bits, specifically, in one embodiment, step S102 includes:
confirming the value of the Nth bit data;
and if the value of the data of the Nth bit is 0, forming the identification bit on the data of the (N-N + 1) th bit.
In the application, the value of the nth data is confirmed first, in this embodiment, the data after the last bit is 1 is used as the valid bit, if the nth data is 1, the original data is directly transmitted, and if the nth data is 0, the identification bit is formed in the nth-N +1 th data. For example, if the sub-data is 10011100, the compressed data is still 10011100, if the sub-data is 00001010, the compressed data is F1010, the compressed data is 5 bits, and the data transmission amount is reduced, and fig. 5 is a schematic diagram of waveforms before and after the sub-data is 00001010.
In one embodiment, step S102 includes:
confirming the value of the Nth bit data;
if the value of the data of the Nth bit is 1, an identification bit is formed in the data of the (N-N + 1) th bit.
In the application, the value of the nth data is confirmed first, in this embodiment, the data after the last bit is 0 is used as the valid bit, if the nth data is 1, the data is directly transmitted as the original data, and if the nth data is 1, the identification bit is formed in the nth data. For example, if the sub-data is 01011100, the compressed data is still 01011100, and if the sub-data is 11110001, the compressed data is F0001, and the compressed data is a 5-bit data sequence, thereby reducing the data transmission amount.
It is understood that the identification bit is a data bit other than binary bit 1 or 0, and the voltage value of the identification bit is greater than the voltage value of bit value 0 and less than the voltage value of bit value 1. For example, if the amplitude of the differential signal is-200 mV to +200mV, then-200 mV would represent 0 and +200mV would represent 1, and the voltage value of the flag bit would be 0mV, it would be possible to clearly distinguish the flag bit from binary bit 1 or 0.
As shown in fig. 2, the present application further provides a data transmission method according to another embodiment, and after step S103, the method further includes:
and 105, restoring the current subdata into N-bit data, and automatically assigning the identification bits of the subdata and the data of each bit behind the identification bits to be the same data.
Step 105 specifically includes:
and automatically assigning the identification bit of the subdata and the data of each bit behind the identification bit to be 0.
In the application, the data after the first bit is 1 is used as the valid bit, and for example, if the read sub-data is 10011100, the received data is still 10011100, and if the sub-data is F1010, the received data is 00001010.
Step 105 specifically includes:
and automatically assigning 1 to the identification bit of the subdata and the data of each bit behind the identification bit.
In the application, the data after the first bit is 1 is used as the valid bit, and for example, if the read sub-data is 01011100, the received data is still 01011100, and if the read sub-data is F0001, the received data is 11110001.
As shown in fig. 3, based on the same concept, the present application further provides an apparatus for compressing data, where the data includes M sub-data, each sub-data includes a bit sequence of N bits, and the apparatus for compressing data includes: a detection unit 101, a deletion unit 102, and an identification bit generation unit 103.
A detection unit 101 for detecting data bit by bit starting from the nth data of the sub data;
an identification bit generation unit 102 for confirming the same continuous data bit number N as the nth data bit and forming an identification bit in the nth-N +1 th data bit;
the data transmission unit 103 transmits data consisting of the 1 st bit to the identification bit as compressed data.
As shown in fig. 4, the receiving apparatus of data further includes a reading unit 104 and a restoring unit 105.
The reading unit 104 is configured to read transmission data, and enter reception of next sub-data when the identification bit is read;
the restoring unit 105 is configured to restore the current sub-data to N-bit data, and the identification bits of the sub-data and the data bits after the identification bits are automatically assigned to the same data.
In one embodiment, the Display device may be any type of Display device, such as an LCD (Liquid Crystal Display) Display device, an OLED (Organic electroluminescent Display) Organic electroluminescent Display device, a QLED (Quantum Dot Light Emitting Diodes) Quantum Dot Light Emitting diode Display device, a curved Display device, or the like. The display panel is a display panel corresponding to the type of the display device.
In one application, the display panel includes a filter substrate, a pixel array and an array substrate, which are sequentially stacked.
In one application, the filter substrate may be any substrate capable of filtering light, such as a color filter substrate composed of color filters.
In one application, the pixel array may include a plurality of sub-pixels regularly arranged in an arbitrary shape, and may include, for example, a plurality of rows of sub-pixels regularly arranged in a rectangle. Each row of sub-pixels in the pixel array comprises a plurality of groups of sub-pixels, each group of sub-pixels comprises a first color sub-pixel, a second color sub-pixel and a third color sub-pixel which are sequentially arranged, the colors of the sub-pixels positioned in the same column are the same, at least one of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel is a red sub-pixel, at least one of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel is a green sub-pixel, and at least one of the first color sub-pixel, the second color sub-pixel and the third color.
In one embodiment, the control module may be a Timing Controller (TCON), the driving module may be a Source Driver IC (Source Driver IC), and the control module or the data driving component may be implemented by a general-purpose Integrated Circuit, such as a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), or a field programmable logic gate device.
The modules or sub-modules in all embodiments of the present Application may be implemented by a general-purpose Integrated Circuit, such as a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit).
The steps in the method of the embodiment of the application can be sequentially adjusted, combined and deleted according to actual needs.
The units in the device of the embodiment of the application can be combined, divided and deleted according to actual needs.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. A data transmission method, wherein the data to be transmitted includes M sub-data, each sub-data is a bit sequence composed of N bits, the transmission method comprises:
detecting the subdata bit by bit from the Nth bit data of the subdata;
confirming the same continuous data bit number N as the nth data bit, and forming an identification bit in the nth-N +1 th data bit; the identification bits are data bits different from each bit of data in the subdata;
transmitting data consisting of the 1 st bit to the identification bit as compressed data;
the step of determining the same continuous data bit number N as the nth bit data and forming the identification bit in the nth-N +1 th bit data specifically includes:
confirming the value of the Nth bit data;
if the value of the nth data is 0, forming the identification bit on the nth-N +1 th data;
and if the Nth data is 1, directly transmitting the data by using the original data.
2. The method of claim 1, wherein the voltage value of the flag bit is greater than a voltage value of a bit value of 0, and the voltage value of the flag bit is less than a voltage value of a bit value of 1.
3. The method for transmitting data according to claim 1, wherein after transmitting the data consisting of the 1 st bit to the identification bit as compressed data, the method comprises:
reading the transmission data, and entering the receiving of the next subdata when reading the identification bit;
restoring the current subdata into N-bit data, and automatically assigning the identification bits of the subdata and the data of each bit behind the identification bits to be the same data.
4. The data transmission method according to claim 3, wherein the step of automatically assigning the remaining bits of data after the identification bit of the sub-data to be the same data specifically comprises:
and automatically assigning the identification bit of the subdata and the data of each bit behind the identification bit to be 0.
5. The data transmission method according to claim 3, wherein the step of automatically assigning the remaining bits of data after the identification bit of the sub-data to be the same data specifically comprises:
and automatically assigning 1 to the identification bit of the subdata and the data of each bit behind the identification bit.
6. A data transmission device, the data to be transmitted includes M pieces of sub data, each sub data is a bit sequence composed of N bits, the data transmission device includes:
a detection unit for detecting the data bit by bit starting from the nth data of the sub data;
an identification bit generation unit for confirming the same continuous data bit number N as the Nth bit data and forming an identification bit in the N-N +1 th bit data; the identification bits are data bits different from each bit of data in the subdata;
the data transmission unit is used for transmitting data consisting of the 1 st bit to the identification bit as compressed data;
the identification bit generation unit is further configured to determine a value of an nth data, form the identification bit in an N-N +1 th data if the value of the nth data is 0, and directly transmit the identification bit with the original data if the nth data is 1.
7. The apparatus for transmitting data according to claim 6, wherein said apparatus for transmitting data comprises:
the reading unit is used for reading the transmission data and entering the receiving of the next subdata when the identification bit is read;
and the recovery unit is used for recovering the current subdata into N-bit data, and the identification bit of the subdata and each bit of data behind the identification bit are automatically assigned to be the same data.
8. The apparatus for transmitting data according to claim 6, wherein the voltage value of the flag bit is greater than a voltage value of a bit value of 0, and the voltage value of the flag bit is less than a voltage value of a bit value of 1.
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| CN201811619873.5A CN109495747B (en) | 2018-12-28 | 2018-12-28 | Data transmission method and device |
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| CN104394410A (en) * | 2014-11-21 | 2015-03-04 | 京东方科技集团股份有限公司 | Image data compression method, decompression method, transmission method and device |
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| JPH02170623A (en) * | 1988-12-23 | 1990-07-02 | Nec Corp | Information processor |
| JPH08162975A (en) * | 1994-12-07 | 1996-06-21 | Nec Corp | Method for compressing/elongating transmission data and communication data processing system to which the method is applied |
| CN102576301A (en) * | 2009-07-21 | 2012-07-11 | 意法爱立信有限公司 | Interfacing circuit comprising a fifo storage |
| CN102821275A (en) * | 2011-06-08 | 2012-12-12 | 中兴通讯股份有限公司 | Data compression method, data compression device, data decompression method and data decompression device |
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