CN111798791A - Method for optimally displaying mixed received data - Google Patents
Method for optimally displaying mixed received data Download PDFInfo
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- CN111798791A CN111798791A CN202010605797.3A CN202010605797A CN111798791A CN 111798791 A CN111798791 A CN 111798791A CN 202010605797 A CN202010605797 A CN 202010605797A CN 111798791 A CN111798791 A CN 111798791A
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- data
- remainder
- data packet
- remainder coefficient
- led driving
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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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Abstract
The invention discloses a method for optimally displaying mixed received data, which comprises the following steps: respectively forming a public integer data packet and a remainder coefficient data packet by the public integer data and the remainder coefficient data; in a display frame, alternately sending a common integer data packet and a remainder coefficient data packet to an LED drive chip, or alternately sending the common integer data packet and the remainder coefficient data packet in the front period of the display frame, and only sending the remainder coefficient data packet in the rear period of the display frame; the LED driving chip generates the received public integer data and the received remainder data into PWM pulses to drive the display device to display; the controller transmits the common integer data packet and the remainder coefficient data packet through a data bus. According to the invention, the LED driving chip receives the public integer data packet and the remainder coefficient data packet which are composed of the integer data and the remainder coefficient data in a mixed mode and generates the PWM pulse, the integer data and the remainder data can be displayed simultaneously, and the LED display device is driven to display more uniformly.
Description
Technical Field
The invention relates to the technical field of LED driving display, in particular to a method for optimally displaying mixed received data.
Background
The LED display screen has the advantages of high gray scale, wide visual angle, rich colors, customizable screen shape and the like, and is widely applied to various fields of industry, traffic, commercial advertisement and the like. In the middle and high-order display process, for the device for receiving the common integer data and the remainder coefficient data in a time-sharing manner, the common integer data is received first, then the remainder coefficient data is received to generate remainder data, and then the common integer data and the remainder data are displayed. By adopting the time-sharing receiving and separate display modes, the integer remainder data in the whole display frame can be displayed unevenly and the display effect is poor.
Disclosure of Invention
The invention aims to provide a method for optimally displaying mixed received data.A public integer data packet and a remainder coefficient data packet which are composed of integer data and remainder coefficient data are mixed and received by an LED driving chip to generate PWM pulses, so that the integer data and the remainder data can be displayed simultaneously, and the LED display device is driven to display more uniformly.
In order to solve the above technical problem, the present invention provides a method for optimally displaying mixed received data, comprising:
respectively forming a common integer data packet and a remainder coefficient data packet by the common integer data and the remainder coefficient data through a controller;
in a display frame, the controller alternately sends a common integer data packet and a remainder coefficient data packet to the LED driving chip, or in the front period of the display frame, the controller alternately sends the common integer data packet and the remainder coefficient data packet, and in the rear period of the display frame, the controller only sends the remainder coefficient data packet;
after receiving the remainder coefficient data, the LED driving chip multiplies the remainder coefficient data by the set remainder weight to obtain complete remainder data;
the LED driving chip generates the received public integer data and the received remainder data into PWM pulses to drive the display device to display;
the controller transmits the common integer data packet and the remainder coefficient data packet through the data bus.
By adopting the technical scheme, in one display frame, the LED driving chip can receive the public integer data packet and the remainder coefficient data packet, multiply the remainder coefficient data packet by the remainder weight to obtain complete remainder data, and the PWM pulse generated by the public integer data and the remainder data can simultaneously contain integer data and remainder data, so that the phenomenon of uneven PWM pulse display is generated when the LED display device effectively supplements the sequential display of the integer remainder data, the display gray scale is more uniform, and the display effect is improved.
Further, the data bit width of each remainder coefficient data is nbit.
Further, the controller sends a plurality of pieces of common integer data and a plurality of pieces of remainder coefficient data to the LED driving chip each time, and in one display frame, the sum of the data bit widths of the common integer data and the remainder coefficient data is less than or equal to 16 bits.
Further, the LED driving chip includes 16 channels for generating PWM pulses from the received data.
Further, the controller sends the common integer data packet and the remainder coefficient data packet to the LED driving chip in a circulating mode.
Further, the LED driving chip is provided with a plurality of LED driving chips, and data transmission among the LED driving chips forms part of a transmission channel of a data bus through serial cascade connection.
The beneficial effects obtained by the invention are as follows: the public integer data and the remainder data are respectively formed into a public integer data packet and a remainder coefficient data packet in a data packet mode, wherein the remainder data are formed by multiplying the remainder coefficient data in the remainder coefficient data packet by a set remainder weight, and when PWM pulses are generated to drive the display device to display, the display device can display the integer data and the remainder data, so that the remainder data in each display frame are effectively supplemented, gray scale display is more uniform, and display effect is improved.
In the process of sending and receiving data, the controller can alternately send the common integer data packet and the remainder coefficient data packet, after the LED driving chip receives the data, the common integer data and the remainder coefficient data are uniformly distributed in the display frame, and when the remainder data is insufficient, the remainder coefficient data can be sent and received in a complementary mode in the later period of the display frame for complementary display, so that the generated PWM pulse drives the LED display device to display more uniformly and display better.
Drawings
FIG. 1 is a schematic diagram illustrating steps performed in accordance with an embodiment of the present invention;
FIG. 2 is a diagram illustrating a data transmission structure according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a data transmission method according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a data display method according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a first data transmission display mode according to an embodiment of the present invention;
FIG. 6 is a diagram illustrating a second data transmission display according to an embodiment of the present invention;
fig. 7 is a diagram illustrating a third data transmission display manner according to an embodiment of the invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Referring to fig. 1 to 7, a method for optimizing display of hybrid received data includes:
s01: respectively forming a common integer data packet and a remainder coefficient data packet by the common integer data and the remainder coefficient data through a controller;
s02: in a display frame, the controller alternately sends a common integer data packet and a remainder coefficient data packet to the LED driving chip, or in the front period of the display frame, the controller alternately sends the common integer data packet and the remainder coefficient data packet, and in the rear period of the display frame, the controller only sends the remainder coefficient data packet;
s03: after receiving the remainder coefficient data, the LED driving chip multiplies the remainder coefficient data by the set remainder weight to obtain complete remainder data;
s04: the LED driving chip generates the received public integer data and the received remainder data into PWM pulses to drive the display device to display;
the controller transmits the common integer data packet and the remainder coefficient data packet through the data bus.
Further, as an optional implementation, the data bit width of each remainder coefficient data is nbit. The data bit width of each remainder coefficient data of the present invention is preferably 1bit, 2bit, or 3 bit.
Further, as an optional implementation manner, the controller sends a plurality of pieces of common integer data and a plurality of pieces of remainder coefficient data to the LED driving chip at a time, and in one display frame, the sum of the data bit widths of the common integer data and the remainder coefficient data is less than or equal to 16 bits.
Further, as an optional embodiment, the LED driving chip includes 16 channels for generating PWM pulses from the received data.
Further, as an alternative embodiment, the controller sends the common integer data packet and the remainder coefficient data packet to the LED driving chip in a cycle.
Further, as an alternative embodiment, the LED driving chip has a plurality of chips, and data transmission therebetween forms part of a transmission channel of a data bus by serial concatenation.
Further, as shown in fig. 2 and 3, the controller transmits the common integer data packet and the remainder coefficient data packet through the data bus, and during transmission, the common integer data packet and the remainder coefficient data packet are transmitted alternately, and in one display frame, the common integer data and the remainder coefficient data to be displayed can be transmitted to the LED driving chip, so that the generated PWM pulse contains the integer data and the remainder data, and the remainder data can be displayed in a complementary manner during specific display.
Continuing to refer to fig. 4, the LED driving chip receives the common integer data packet and the remainder coefficient data packet in a circulating manner, and multiplies the remainder coefficient data in the remainder coefficient data packet by the set remainder weight to obtain complete remainder data, and when the LED driving chip receives the integer data and the remainder data, the LED driving chip generates PWM pulses to drive the LED display device to display, so that the display device can display the integer data and the remainder data, and the problems of gray scale loss and uneven display caused by receiving the integer data and then receiving the remainder data are avoided. The invention can make the integer and remainder data display more fully and effectively improve the display effect by a mode of circularly and alternately sending and receiving partial public integer data and remainder coefficient data.
When the data packets are not cascaded at the receiving end of the LED driving chip, each common integer data packet can contain 1-3 common integers. Each remainder coefficient packet may contain 5 to 16 remainder coefficients. Each data packet is 16 bits long. When the LED driving chips are cascaded, the number of data in the data packet and the length of the data packet are set according to the cascade stage number.
Referring to fig. 5, the controller may transmit all common integer packets first and then transmit the remainder coefficient packets. By adopting the mode, the LED driving chip can rapidly complete data switching between adjacent display frames, so that the frame image dislocation time is short, and the display effect is improved.
Referring to fig. 6 and 7, in a display frame, the controller alternately sends the common integer data packets and the remainder coefficient data packets to the LED driving chip until data transmission in the display frame is completed, and the LED driving chip can receive complete common integer data and remainder coefficient data to generate PWM pulses to drive the display device to display, so that complete gray scale display can be used, and the display effect is more uniform. The controller can also alternately send the public integer data packets and the remainder coefficient data packets in the front period of one display frame, and only send the remainder coefficient data packets for supplementary display in the rear period of time, so that the time for independently displaying the public integer can be reduced, the gray data in the display frame is uniformly distributed, and the display effect is effectively improved.
In the display process, when the LED driving chip receives the public integer data and the remainder coefficient data, the LED driving chip drives the display device to use complete gray scale display, when the public integer data is received and displayed, the LED driving chip generates PWM pulses only containing the public integer data to drive the display device to use the public integer data for display, and when the LED driving chip continuously receives the remainder coefficient data packet sent by the controller, the LED driving chip generates the PWM pulses containing the public integer data and the remainder data to drive the display device to use complete gray scale display. Through the alternate sending mode of the public integer data packets and the remainder coefficient data packets, the data packets can be alternately displayed during display, the display effect can be effectively improved, the phenomenon of ash jumping is reduced, and the PWM pulse display is more uniform.
In summary, the actual samples of the present invention are prepared according to the description and the drawings, and after a plurality of usage tests, the effect of the usage tests proves that the present invention can achieve the expected purpose, and the practical value is undoubted. The above-mentioned embodiments are only for convenience of illustration and not intended to limit the invention in any way, and those skilled in the art will be able to make equivalents of the features of the invention without departing from the technical scope of the invention.
Claims (6)
1. A method for optimizing display of mixed received data, comprising:
respectively forming a common integer data packet and a remainder coefficient data packet by the common integer data and the remainder coefficient data through a controller;
in a display frame, the controller alternately sends a common integer data packet and a remainder coefficient data packet to the LED driving chip, or in the front period of the display frame, the controller alternately sends the common integer data packet and the remainder coefficient data packet, and in the rear period of the display frame, the controller only sends the remainder coefficient data packet;
after receiving the remainder coefficient data, the LED driving chip multiplies the remainder coefficient data by the set remainder weight to obtain complete remainder data;
the LED driving chip generates the received public integer data and the received remainder data into PWM pulses to drive the display device to display;
the controller transmits the common integer data packet and the remainder coefficient data packet through the data bus.
2. The method of claim 1, wherein the method further comprises: the data bit width of each remainder coefficient data is nbit.
3. The method of claim 2, wherein the method further comprises: the controller sends a plurality of pieces of common integer data and a plurality of pieces of remainder coefficient data to the LED driving chip each time, and in one display frame, the sum of the data bit widths of the common integer data and the remainder coefficient data is less than or equal to 16 bits.
4. The method of claim 3, wherein the method further comprises: the LED driving chip comprises 16 channels for generating PWM pulses from received data.
5. The method of claim 1, wherein the method further comprises: and the controller circularly sends the common integer data packet and the remainder coefficient data packet to the LED driving chip.
6. The method of claim 1, wherein the method further comprises: the LED driving chip is provided with a plurality of LED driving chips, and data transmission among the LED driving chips forms part of a transmission channel of a data bus through serial cascade connection.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010605797.3A CN111798791A (en) | 2020-06-29 | 2020-06-29 | Method for optimally displaying mixed received data |
| CN202110385362.7A CN112835830A (en) | 2020-04-15 | 2021-04-09 | Gray data display driving module and gray data transmission method |
| CN202120729683.XU CN214409973U (en) | 2020-04-15 | 2021-04-09 | Gray data display driving module |
| CN202110385361.2A CN112905509B (en) | 2020-04-15 | 2021-04-09 | Gray data transmission controller, transmission control system and transmission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010605797.3A CN111798791A (en) | 2020-06-29 | 2020-06-29 | Method for optimally displaying mixed received data |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111798791A true CN111798791A (en) | 2020-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010605797.3A Withdrawn CN111798791A (en) | 2020-04-15 | 2020-06-29 | Method for optimally displaying mixed received data |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111798791A (en) |
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2020
- 2020-06-29 CN CN202010605797.3A patent/CN111798791A/en not_active Withdrawn
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Application publication date: 20201020 |