CN111028752A - Method for converting LVDS signal into RSDS signal - Google Patents
Method for converting LVDS signal into RSDS signal Download PDFInfo
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- CN111028752A CN111028752A CN201911144284.0A CN201911144284A CN111028752A CN 111028752 A CN111028752 A CN 111028752A CN 201911144284 A CN201911144284 A CN 201911144284A CN 111028752 A CN111028752 A CN 111028752A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G3/2096—Details of the interface to the display terminal specific for a flat panel
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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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
Abstract
The invention provides a method for converting LVDS signals into RSDS signals, which comprises the following steps: s1: the processing chip receives a double-path 8Bit LVDS signal from the LVDS signal input interface; s2: the processing chip carries out weighted operation processing on each pixel point of the double-path 8-Bit LVDS signals; s3: the processing chip performs amplification enhancement processing on the pixel points processed in the step S2; s4: the processing chip generates a first LVDS signal and a second LVDS signal according to the pixel point processed in the step S3; s5: the first conversion chip converts the first LVDS signal into a first RSDS signal, and the second conversion chip converts the second LVDS signal into a second RSDS signal; by the method for converting the LVDS signals into the RSDS signals, the CPU adopting the LVDS communication protocol can directly drive the LCD adopting the RSDS communication protocol.
Description
Technical Field
The invention relates to the field of display equipment, in particular to a method for converting LVDS signals into RSDS signals.
Background
At present, more than 95% of CPU on the market adopts LVDS or other driving communication protocols for LCD, the CPU adopting the LVDS cannot directly drive the LCD adopting the RSDS communication protocol, if the LCD adopting the RSDS communication protocol needs to be used, the customized CPU needs to be used for control, the cost of the customized CPU is very high, and the technical barrier of the customized CPU is very high and is not beneficial to secondary technology development; there is a need for a method for converting LVDS signals into RSDS signals, so that a CPU using LVDS communication protocol can directly drive an LCD using RSDS communication protocol.
Disclosure of Invention
In order to solve the above problem, the present invention provides a method for converting an LVDS signal into an RSDS signal.
The invention is realized by the following technical scheme:
the invention provides a method for converting LVDS signals into RSDS signals, which comprises the following steps: the LVDS signal input interface 10, the processing chip 20, the first conversion chip 30, the second conversion chip 40, the first RSDS signal output interface 50 and the second RSDS signal output interface 60, wherein the method for converting the LVDS signals into the RSDS signals comprises the following steps:
s1: the processing chip 20 receives a dual-path 8Bit LVDS signal from the LVDS signal input interface 10;
s2: the processing chip 20 performs weighted operation processing on each pixel point of the two-way 8-Bit LVDS signal;
s3: the processing chip 20 performs amplification enhancement processing on the pixel point processed in the step S2;
s4: the processing chip 20 generates two paths of LVDS signals, namely a first LVDS signal and a second LVDS signal, according to the pixel point processed in step S3;
s5: a first LVDS signal is input to the first conversion chip 30, a second LVDS signal is input to the second conversion chip 40, the first conversion chip 30 performs signal level conversion on the first LVDS signal to convert the first LVDS signal into a first RSDS signal, and the second conversion chip 40 performs signal level conversion on the second LVDS signal to convert the second LVDS signal into a second RSDS signal;
s6: the first conversion chip 30 performs image enhancement on the first RSDS signal and then transmits the first RSDS signal to the first RSDS signal output interface 50 for output, and the second conversion chip 40 performs image enhancement on the second RSDS signal and then transmits the second RSDS signal to the second RSDS signal output interface 60 for output.
Further, in step S1, the processing chip 20 is set to the dual-path 8Bit LVDS signal input mode, i.e., can receive the dual-path 8Bit LVDS signals from the LVDS signal input interface 10.
Further, in step S2, a scaler inside the processing chip 20 performs weighting operation on each pixel of the dual-path 8Bit LVDS signal; the processing chip 20 calculates the display position of each pixel point of the dual-path 8Bit LVDS signal on the external display according to the output resolution and the resolution of the external display.
Further, in step S3, the processing chip 20 performs amplification enhancement processing on the pixel point processed in step S2 through an image enhancement algorithm.
Further, in step S4, the processing chip 20 uses an external high-speed crystal oscillator as a clock, the external high-speed crystal oscillator generates a new clock signal in combination with the internal clock generating unit of the processing chip 20, and the processing chip 20 generates two LVDS signals according to a rising edge of each new clock signal, a display position of each pixel point on the external display, and the pixel point processed in step S3.
Further, in step S5, the first conversion chip 30 converts the first LVDS signal from the original: at 1.2V DC offset level, the electrical signal with swing of + -350 mV is converted into the first RSDS signal with swing of + -200 mV at 1.2V DC offset level.
Further, in step S5, the second conversion chip 40 converts the second LVDS signal from the original: at 1.2V DC offset level, the electrical signal with the swing of +/-350 mV is converted into a second RSDS signal with the swing of +/-200 mV at 1.2V DC offset level.
Further, in step S6, after the first conversion chip 30 performs the image enhancement process on the first RSDS signal, the first conversion chip 30 generates a first clock signal through an internal oscillator of the first conversion chip 30, and transmits the first RSDS signal to the first RSDS signal output interface 50 for output according to the first clock signal.
Further, in step S6, after the second conversion chip 40 performs the image enhancement process on the second RSDS signal, the second conversion chip 40 generates a second clock signal through an internal oscillator of the second conversion chip 40, and transmits the second RSDS signal to the second RSDS signal output interface 60 according to the second clock signal for output.
The invention has the beneficial effects that:
the method for converting the LVDS signals into the RSDS signals can convert the LVDS signals into the RSDS signals, so that a CPU adopting an LVDS communication protocol can directly drive an LCD liquid crystal display adopting the RSDS communication protocol.
Drawings
FIG. 1 is a block diagram of a method for converting LVDS signals to RSDS signals according to the present invention;
fig. 2 is a driving diagram illustrating a method for converting LVDS signals into RSDS signals according to the present invention.
Detailed Description
In order to more clearly and completely explain the technical scheme of the invention, the invention is further explained with reference to the attached drawings.
Referring to fig. 1 to fig. 2, the present invention provides a method for converting LVDS signals into RSDS signals, which includes: the LVDS signal input interface 10, the processing chip 20, the first conversion chip 30, the second conversion chip 40, the first RSDS signal output interface 50 and the second RSDS signal output interface 60, wherein the method for converting the LVDS signals into the RSDS signals comprises the following steps:
s1: the processing chip 20 receives a dual-path 8Bit LVDS signal from the LVDS signal input interface 10;
s2: the processing chip 20 performs weighted operation processing on each pixel point of the two-way 8-Bit LVDS signal;
s3: the processing chip 20 performs amplification enhancement processing on the pixel point processed in the step S2;
s4: the processing chip 20 generates two paths of LVDS signals, namely a first LVDS signal and a second LVDS signal, according to the pixel point processed in step S3;
s5: a first LVDS signal is input to the first conversion chip 30, a second LVDS signal is input to the second conversion chip 40, the first conversion chip 30 performs signal level conversion on the first LVDS signal to convert the first LVDS signal into a first RSDS signal, and the second conversion chip 40 performs signal level conversion on the second LVDS signal to convert the second LVDS signal into a second RSDS signal;
s6: the first conversion chip 30 performs image enhancement on the first RSDS signal and then transmits the first RSDS signal to the first RSDS signal output interface 50 for output, and the second conversion chip 40 performs image enhancement on the second RSDS signal and then transmits the second RSDS signal to the second RSDS signal output interface 60 for output.
In this embodiment, the LVDS signal input interface 10 is electrically connected to the processing chip 20; the first conversion chip 30 and the second conversion chip 40 are electrically connected to the processing chip 20 respectively; the first RSDS signal output interface 50 is electrically connected to the first conversion chip 30; the second RSDS signal output interface 60 is electrically connected to the second conversion chip 40; the processing chip 20 is: a TW8844 chip; the first conversion chip 30 and the second conversion chip 40 are both: THF9802 chip; through steps S1-S6, the LVDS signals can be converted into RSDS signals, so that the CPU adopting the LVDS communication protocol can directly drive the LCD adopting the RSDS communication protocol, the cost of the LCD system adopting the RSDS communication protocol is reduced, and secondary technical development of technicians is facilitated.
Further, in step S1, the processing chip 20 is set to the dual-path 8Bit LVDS signal input mode, i.e., can receive the dual-path 8Bit LVDS signals from the LVDS signal input interface 10; further, in step S2, a scaler inside the processing chip 20 performs weighting operation on each pixel of the dual-path 8Bit LVDS signal; the processing chip 20 calculates the display position of each pixel point of the dual-path 8Bit LVDS signal on the external display according to the output resolution and the resolution of the external display.
In the embodiment, the display position of each pixel point of the dual-path 8-Bit LVDS signal on the external display is calculated, so that each pixel point can be conveniently used subsequently.
Further, in step S3, the processing chip 20 performs amplification enhancement processing on the pixel point processed in step S2 through an image enhancement algorithm.
In this embodiment, the pixel points processed in step S2 are amplified and enhanced, so that each pixel point can be used conveniently.
Further, in step S4, the processing chip 20 uses an external high-speed crystal oscillator as a clock, the external high-speed crystal oscillator generates a new clock signal in combination with the internal clock generating unit of the processing chip 20, and the processing chip 20 generates two LVDS signals according to a rising edge of each new clock signal, a display position of each pixel point on the external display, and the pixel point processed in step S3.
In this embodiment, the processing chip 20 determines that the first LVDS signal is located on the left side of the external display and the second LVDS signal is located on the right side of the external display according to the display position of each pixel point on the external display.
Further, in step S5, the first conversion chip 30 converts the first LVDS signal from the original: converting the electric signal with the swing amplitude of +/-350 mV on a 1.2V direct current bias level into a first RSDS signal with the swing amplitude of +/-200 mV on a 1.2V direct current bias level; in step S5, the second conversion chip 40 converts the second LVDS signal from the original: at 1.2V DC offset level, the electrical signal with the swing of +/-350 mV is converted into a second RSDS signal with the swing of +/-200 mV at 1.2V DC offset level.
In the present embodiment, the first LVDS signal is converted into a first RSDS signal by the first conversion chip 30; the second LVDS signal is converted into a second RSDS signal by the second conversion chip 40.
Further, in step S6, after the first conversion chip 30 performs the image enhancement process on the first RSDS signal, the first conversion chip 30 generates a first clock signal through an internal oscillator of the first conversion chip 30, and transmits the first RSDS signal to the first RSDS signal output interface 50 for output according to the first clock signal; in step S6, after the second conversion chip 40 performs the image enhancement process on the second RSDS signal, an internal oscillator of the second conversion chip 40 generates a second clock signal, and transmits the second RSDS signal to the second RSDS signal output interface 60 according to the second clock signal for output.
In this embodiment, the first RSDS signal output interface 50 outputs the first RSDS signal to the left of the external display, the second RSDS signal output interface 60 outputs the second RSDS signal to the right of the external display, and the first RSDS signal and the second RSDS signal form a complete image signal.
Of course, the present invention may have other embodiments, and based on the embodiments, those skilled in the art can obtain other embodiments without any creative effort, and all of them are within the protection scope of the present invention.
Claims (9)
1. A method for converting LVDS signals into RSDS signals, the method for converting LVDS signals into RSDS signals comprising: the LVDS signal conversion method comprises the following steps of:
s1: the processing chip receives a double-path 8Bit LVDS signal from the LVDS signal input interface;
s2: the processing chip carries out weighted operation processing on each pixel point of the double-path 8-Bit LVDS signals;
s3: the processing chip performs amplification enhancement processing on the pixel points processed in the step S2;
s4: the processing chip generates two paths of LVDS signals which are respectively a first LVDS signal and a second LVDS signal according to the pixel point processed in the step S3;
s5: the first LVDS signal is input into the first conversion chip, the second LVDS signal is input into the second conversion chip, the first conversion chip performs signal level conversion on the first LVDS signal and converts the first LVDS signal into a first RSDS signal, and the second conversion chip performs signal level conversion on the second LVDS signal and converts the second LVDS signal into a second RSDS signal;
s6: the first conversion chip transmits the first RSDS signal to the first RSDS signal output interface for output after carrying out image enhancement processing on the first RSDS signal, and the second conversion chip transmits the second RSDS signal to the second RSDS signal output interface for output after carrying out image enhancement processing on the second RSDS signal.
2. The method according to claim 1, wherein in step S1, the processing chip is set to a dual-path 8Bit LVDS signal input mode, i.e. receives a dual-path 8Bit LVDS signal from the LVDS signal input interface.
3. The method according to claim 1, wherein in step S2, a scaler inside the processing chip performs weighting operation on each pixel of the dual-path 8-Bit LVDS signal; and the processing chip calculates the display position of each pixel point of the double-path 8Bit LVDS signal on the external display according to the output resolution and the resolution of the external display.
4. The method of converting LVDS signals into RSDS signals according to claim 1, wherein in step S3, the processing chip performs amplification enhancement processing on the pixel points processed in step S2 through an image enhancement algorithm.
5. The method of claim 1, wherein in step S4, the processing chip uses an external high-speed crystal oscillator as a clock, the external high-speed crystal oscillator generates a new clock signal in combination with the internal clock generating unit of the processing chip, and the processing chip generates two LVDS signals according to a rising edge of each new clock signal, a display position of each pixel point on the external display, and the pixel point processed in step S3.
6. The method according to claim 1, wherein in step S5, the first converting chip converts the first LVDS signal from original: at 1.2V DC offset level, the electrical signal with swing of + -350 mV is converted into the first RSDS signal with swing of + -200 mV at 1.2V DC offset level.
7. The method according to claim 1, wherein in step S5, the second conversion chip converts the second LVDS signal from original: at 1.2V DC offset level, the electrical signal with the swing of +/-350 mV is converted into a second RSDS signal with the swing of +/-200 mV at 1.2V DC offset level.
8. The method according to claim 1, wherein in step S6, after the first conversion chip performs image enhancement on the first RSDS signal, the first conversion chip generates a first clock signal through an internal oscillator of the first conversion chip, and transmits the first RSDS signal to the first RSDS signal output interface for output according to the first clock signal.
9. The method according to claim 1, wherein in step S6, after the second conversion chip performs image enhancement on the second RSDS signal, the second conversion chip generates a second clock signal via an internal oscillator of the second conversion chip, and transmits the second RSDS signal to the second RSDS signal output interface for output according to the second clock signal.
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| CN201911144284.0A CN111028752B (en) | 2019-11-20 | 2019-11-20 | Method for converting LVDS signals into RSDS signals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114495851A (en) * | 2020-11-11 | 2022-05-13 | 咸阳彩虹光电科技有限公司 | Display device |
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