CN111862882A - Data display method for storing data by adopting double memories - Google Patents
Data display method for storing data by adopting double memories Download PDFInfo
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- CN111862882A CN111862882A CN202010295009.5A CN202010295009A CN111862882A CN 111862882 A CN111862882 A CN 111862882A CN 202010295009 A CN202010295009 A CN 202010295009A CN 111862882 A CN111862882 A CN 111862882A
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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]
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- Computer Hardware Design (AREA)
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- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a data display method for storing data by adopting double memories, which comprises the following steps: receiving common integer data and remainder coefficient data in a time-sharing manner, and storing the received common integer data in two memories; judging whether remainder coefficient data are received and setting remainder weight; if so, combining the remainder coefficient daA with the remainder weight to generate complete remainder daA, and transmitting the remainder daA and the common integer daA to a PWM (pulse-width modulation) generating device to generate PWM-A pulses; if not, reading out the common integer data and transmitting the common integer data to a PWM generating device to generate PWM-B pulses; wherein the two memories alternately store a continuous number of frames of integer data, and the PWM generating means alternately reads the common integer data in the two memories for generating PWM pulses. The invention adopts two memories to respectively store and read the public integer data to generate the PWM pulse signal, and further optimizes the display effect in the process of driving the LED display screen to display.
Description
Technical Field
The invention relates to a display technology of an LED display screen, in particular to a data display method for storing data by adopting double memories.
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 and commercial advertisement lamps. In the middle and high-order display screen, a constant current source driving chip capable of outputting high-refresh rate PWM is usually adopted, such chips usually receive and store gray data, and a PWM generating device is used to generate a PWM driving signal for driving the display screen to display. The gray data can be divided into integer and remainder data parts in the transmission process, and for a device for receiving the integer data and the remainder data in a time-sharing manner, the device usually displays the received remainder data under the condition that the integer data and the remainder data are received at the same time, and partial display time is idle in one display period, so that the display effect is poor.
Disclosure of Invention
The invention aims to provide a data display method for storing data by adopting double memories, wherein the two memories are respectively used for storing and reading common integer data to generate PWM pulse signals, so that the data display method is more flexible in the process of driving an LED display screen to display, and the display effect is further optimized.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a data display method for storing data using dual memories, the method comprising:
Receiving common integer data and remainder coefficient data in a time-sharing manner, and storing the received common integer data in two memories;
judging whether remainder coefficient data are received and setting remainder weight;
if so, combining the remainder coefficient daA with the remainder weight to generate complete remainder daA, and transmitting the remainder daA and the common integer daA to a PWM (pulse-width modulation) generating device to generate PWM-A pulses;
if not, reading out the common integer data and transmitting the common integer data to a PWM generating device to generate PWM-B pulses;
wherein the two memories alternately store a continuous number of frames of integer data, and the PWM generating means alternately reads the common integer data in the two memories for generating PWM pulses.
According to the technical scheme, the Ping-Pong memory structure is formed by the two memories, the integer data are synchronously received, stored and read and are transmitted to the PWM generating device to generate the PWM pulse, so that data display in each display frame does not fall empty.
In the above data display method, the data display method further includes: and the display area dividing module is used for setting different display areas to use different data to generate PWM pulses.
In the data display method, the display area dividing module may be configured to use integer data to generate the PWM-B pulse.
In the daA display method, the display area dividing module may be configured to use integer daA and remainder daA to generate the PWM-a pulse.
In the data display method, the PWM-B is a pulse generated only by the common integer data.
In the daA display method, the PWM-a is a pulse generated by including common integer daA and complete remainder daA.
In the daA display method, the PWM-B and the PWM-A can be divided into a plurality of groups, and each group comprises a plurality of lines of display daA. The groups and the rows can be used for grouping PWM-B and PWM-A, the number of the groups is more than or equal to 2 groups, the number of the rows is more than or equal to 1 row and less than or equal to 64 rows, and the groups and the rows can be set according to actual display requirements.
In the data display method, the two memories are static random access memories.
The beneficial effects obtained by the invention are as follows: in the process of receiving gray data, storing integer data in a memory, when no remainder coefficient data is received, reading the integer data by one of the two memories, receiving the integer data of the next frame by the other memory, and using the read integer data to generate PWM-B pulse to drive a display screen to display; when the remainder coefficient daA is received, the remainder coefficient daA is combined with the remainder weight to generate remainder daA, and then the remainder daA and the public integer daA jointly generate PWM-A pulses to drive a display screen to display, so that the configuration is flexible, and the display effect is further optimized.
Drawings
FIG. 1 is a diagram illustrating steps performed in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of PWM pulse signal generation according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of PWM-B and PWM-A pulse signal generation according to an embodiment of the present invention;
FIG. 4 is a schematic workflow diagram of an embodiment of the present invention;
FIG. 5 is a schematic diagram of a display mode according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Referring to fig. 1 and 2, a data display method using dual memories to store data, the method comprising:
s01: receiving common integer data and remainder coefficient data in a time-sharing manner, and storing the received common integer data in two memories;
s02: judging whether remainder coefficient data are received and setting remainder weight;
s03: if so, combining the remainder coefficient daA with the remainder weight to generate complete remainder daA, and transmitting the remainder daA and the common integer daA to a PWM (pulse-width modulation) generating device to generate PWM-A pulses;
s04: if not, reading out the common integer data and transmitting the common integer data to a PWM generating device to generate PWM-B pulses;
wherein the two memories alternately store a continuous number of frames of integer data, and the PWM generating means alternately reads the common integer data in the two memories for generating PWM pulses.
Specifically, the remainder data may be displayed or not displayed when the number value of the remainder coefficient is 1bit, for example, when the number value of the received remainder coefficient is 1, the remainder data is displayed together with the integer data, and when the number value of the received remainder coefficient is 0, the remainder data is not displayed, which is set according to the embodiment of the practical application. It should be understood that when the value of the remainder coefficient data is greater than or equal to 2 bits, the remainder coefficient data can be further controlled to be only partially displayed.
Further, as an optional implementation manner, the data display method of the present invention further includes: and the display area dividing module is used for setting different display areas to use different data to generate PWM pulses. The display area division module can set different display areas to determine whether the display area generates PWM by using integer data or generates PWM by using both the integer data and the remainder data according to whether the remainder coefficient data and the set value of the remainder coefficient data are received, and the setting is flexible. It should be understood that the display area dividing module is a module having a logic function of determining whether the remainder coefficient data is received and executing the corresponding display mode, and may be integrated in a display chip or a PWM generating apparatus, and the above function may be implemented by using an existing logic circuit.
Further, as an alternative embodiment, the display area dividing module may set the use of integer data for generating the PWM-B pulse.
Further, as an alternative embodiment, the display area dividing module may be configured to use integer daA and remainder daA for generating the PWM-a pulse.
Further, as an alternative embodiment, PWM-B is a pulse that contains only common integer data generation.
Further, as an alternative embodiment, PWM-a is a pulse generated containing common integer daA and full remainder daA.
Further, as an alternative embodiment, PWM-B and PWM-A may be divided into sets, each set containing rows of display daA.
Further, as an alternative embodiment, the two memories are provided as static random access memories.
Referring to fig. 3 and 4, when receiving the nth frame of common integer daA, generating PWM-B pulse by using the stored nth-1 frame of common integer daA, and when receiving the nth frame of residue coefficient daA, generating PWM-a by combining the stored nth frame of common integer daA; and further, when receiving the n +1 th frame of common integer daA, generating PWM-B pulse by using the stored n +1 th frame of common integer daA, and when receiving the n +1 th frame of residue coefficient daA, generating PWM-A pulse by combining the stored n +1 th frame of common integer daA. For example, before the n frame remainder coefficient data is received, the PWM-B pulse can be generated by using the common integer data of the n-1 frame for display, and under the condition that the remainder coefficient data is not received, the stored common integer data can be used for generating the PWM pulse for display, so that the display time is fully utilized.
Referring to FIG. 5, each of the pulse signals PWM-B and PWM-A includes a plurality of sets of daA, each set including a plurality of line feed operations. Where Q-L1 indicates that the common integer data for row 1 is read from memory and R-L1-G5 indicates that row 1, group 5 remainder coefficient data is received. The sets and rows of the data display method provided by the present invention include, but are not limited to, the number shown in fig. 5, that is, fig. 5 is an illustration of the data display method of the present invention, and does not limit the method of the present invention in any way.
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 (8)
1. A data display method for storing data using dual memories, the method comprising:
receiving common integer data and remainder coefficient data in a time-sharing manner, and storing the received common integer data in two memories;
judging whether remainder coefficient data are received and setting remainder weight;
if so, combining the remainder coefficient daA with the remainder weight to generate complete remainder daA, and transmitting the remainder daA and the common integer daA to a PWM (pulse-width modulation) generating device to generate PWM-A pulses;
if not, reading out the common integer data and transmitting the common integer data to a PWM generating device to generate PWM-B pulses;
wherein the two memories alternately store a continuous number of frames of integer data, and the PWM generating means alternately reads the common integer data in the two memories for generating PWM pulses.
2. The data display method of claim 1, wherein: the data display method further comprises: and the display area dividing module is used for setting different display areas to use different data to generate PWM pulses.
3. The data display method of claim 2, wherein: the display area dividing module may be configured to use integer data for generating the PWM-B pulses.
4. The data display method of claim 2, wherein: the display area dividing module may be configured to use integer daA and remainder daA for generating the PWM-a pulses.
5. A data display method according to claim 3, characterized in that: the PWM-B is a pulse generated only by containing common integer data.
6. The data display method of claim 4, wherein: the PWM-A is a pulse generated by public integer daA and complete remainder daA.
7. The data display method of claim 1, wherein: the PWM-B and PWM-A can be divided into a plurality of groups, and each group comprises a plurality of rows of display daA.
8. The data display method of claim 1, wherein: the two memories are configured as static random access memories.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010295009.5A CN111862882A (en) | 2020-04-15 | 2020-04-15 | Data display method for storing data by adopting double memories |
| 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 |
| CN202110387832.3A CN112837652B (en) | 2020-04-15 | 2021-04-09 | Gray scale data display driving module and gray scale data transmission method |
| CN202110384076.9A CN113012635B (en) | 2020-04-15 | 2021-04-09 | Gray data transmission controller, transmission control system and transmission method |
| 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 |
|---|---|---|---|
| CN202010295009.5A CN111862882A (en) | 2020-04-15 | 2020-04-15 | Data display method for storing data by adopting double memories |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111862882A true CN111862882A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010295009.5A Withdrawn CN111862882A (en) | 2020-04-15 | 2020-04-15 | Data display method for storing data by adopting double memories |
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| Country | Link |
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| CN (1) | CN111862882A (en) |
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2020
- 2020-04-15 CN CN202010295009.5A patent/CN111862882A/en not_active Withdrawn
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