CN111009111B - Data coding modulation method and system based on SPI bus - Google Patents
Data coding modulation method and system based on SPI bus Download PDFInfo
- Publication number
- CN111009111B CN111009111B CN201911273175.9A CN201911273175A CN111009111B CN 111009111 B CN111009111 B CN 111009111B CN 201911273175 A CN201911273175 A CN 201911273175A CN 111009111 B CN111009111 B CN 111009111B
- Authority
- CN
- China
- Prior art keywords
- bits
- carrier
- value
- spi bus
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000000969 carrier Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000006870 function Effects 0.000 abstract description 4
- 238000003860 storage Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Selective Calling Equipment (AREA)
Abstract
According to the data coding modulation method based on the SPI bus, firstly, a carrier is determined based on a target carrier frequency and the set frequency of the SPI bus, then the number of groups of the carrier is determined based on the carrier and target data to be sent, and coding modulation of the target data is completed by sending the carrier with the corresponding number of groups. The method realizes data coding modulation of the SPI bus based on the intelligent terminal, is used for remotely controlling equipment supporting remote control functions such as household appliances and the like, can realize fine adjustment of carrier waves, and can obtain high-precision carrier waves.
Description
Technical Field
The application relates to the technical field of data coding modulation, in particular to a data coding modulation technology based on an SPI bus.
Background
At present, household appliances such as televisions, air conditioners, set top boxes and the like in families are remotely controlled by transmitting infrared waves through remote controllers matched with various household appliance manufacturers, along with increasing types and models of household appliances in families, the models of the remote controllers are also increasing, and the remote controllers of various manufacturers are not universal basically, so that great inconvenience is caused in storage and use of the remote controllers.
With the popularization of smart phones, it is an application scenario that household appliances are remotely controlled by smart phones, and smart phones supporting an infrared remote control function are beginning to be marketed.
At present, the infrared remote control carrier frequency of common household appliances is basically 38KHz, and the infrared remote control carrier frequency with high precision cannot be obtained through a conventional PWM (Pulse Width Modulation) code Modulation mode or analog code Modulation through a GPIO (general purpose input output) port in a smart phone. For example, the PWM modulation method is to control the carrier frequency of the emitted infrared wave by PWM to generate high and low levels, if the clock frequency is FclkThe carrier frequency obtained by the PWM code modulation mode is FpwmThen, then
Fpwm＝Fclk/(2PwmSizex2Mx PreDiv)，
Where M is 0,1, …,7, the configurable frequency is 19.2MHz, 32KHz or 1KHz, PwmSize can be 6, 9 or 7, and PreDiv can be 1, 3, 5 or 6.
Therefore, the carrier frequency obtained by the PWM coding modulation mode is 37.5KHz which is closest to 38KHz, and the carrier frequency obtained by the PWM coding modulation mode is a fixed value and cannot be adjusted in precision.
Disclosure of Invention
The application aims to provide a data coding modulation method and system based on an SPI bus.
According to an aspect of the present application, there is provided a data coding modulation method based on an SPI bus, wherein the method includes:
determining a carrier based on a target carrier frequency and a set frequency of the SPI bus;
and determining the number of carrier transmission groups based on the carrier and the target data to be transmitted so as to complete the code modulation of the target data by transmitting the carrier with the corresponding number of groups.
Preferably, the determining a carrier based on the target carrier frequency and the set frequency of the SPI bus comprises:
determining the number of bits of a group of continuously transmitted bits based on a target carrier frequency and a set frequency of an SPI bus, wherein the group of continuously transmitted bits comprises continuously transmitting a plurality of bits with a value of 1 and then continuously transmitting a plurality of bits with a value of 0, and the corresponding relation between the number of continuously transmitted bits with a value of 0 and the number of continuously transmitted bits with a value of 1 is determined by a preset carrier duty ratio;
determining the corresponding number of a set of consecutively transmitted bits having values of 1 and 0 as a carrier.
Preferably, if the number of bits of the set of consecutively transmitted bits is N, where the number of bits of consecutively transmitted bits with a value of 0 is M, and the preset carrier duty cycle is R, then:
R＝(N-M)/N，
wherein, the carrier duty ratio R is expressed as the ratio of the number of bits with a value of 1 in a group of continuously transmitted bits to the number of bits of the group of continuously transmitted bits.
Preferably, if the target data is a, the target carrier frequency is F1 hz, the set frequency of the SPI bus is F2 hz, and the number of groups of carriers to be transmitted is K, then:
N＝F2/F1，
K＝A x F2，
wherein the target data a is composed of data codes having a preset time width.
Preferably, the corresponding adjustment of the target carrier frequency is achieved by adjusting the number of bits of the set of consecutively transmitted bits within a preset range.
Preferably, the carrier is adjusted by adjusting a set frequency of the SPI bus.
According to another aspect of the present application, there is also provided a data coding modulation system based on an SPI bus, wherein the system comprises:
the carrier determining module is used for determining a carrier based on the target carrier frequency and the setting frequency of the SPI bus;
and the data coding and modulating module is used for determining the number of carrier sending groups based on the carrier and the target data to be sent so as to complete the coding and modulation of the target data by sending the carriers of the number of the groups.
Compared with the prior art, the data coding modulation method based on the SPI bus comprises the steps of firstly determining a carrier based on a target carrier frequency and the setting frequency of the SPI bus, then determining the number of carrier sending groups based on the carrier and target data to be sent, and completing coding modulation of the target data by sending the carriers with the corresponding groups. The method realizes data coding modulation of the SPI bus based on the intelligent terminal, is used for remotely controlling equipment supporting remote control functions such as household appliances and the like, can realize fine adjustment of carrier waves, and can obtain high-precision carrier waves.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 illustrates a flow diagram of a method according to an aspect of the present application;
FIG. 2 illustrates a block diagram of a system according to another aspect of the subject application;
the same or similar reference numbers in the drawings identify the same or similar elements.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
In a typical configuration of the present application, each module and trusted party of the system includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include non-transitory computer readable media (transient media), such as modulated data signals and carrier waves.
In order to further explain the technical means and effects adopted by the present application, the following description clearly and completely describes the technical solution of the present application with reference to the accompanying drawings and preferred embodiments.
FIG. 1 illustrates a method flow diagram of an aspect of the present application, wherein the method of an embodiment comprises:
s11 determining carrier wave based on target carrier frequency and setting frequency of SPI bus
S12 determines the number of carrier transmission groups based on the carrier and the target data to be transmitted, so as to complete the code modulation of the target data by transmitting the corresponding number of carriers.
In the present application, the method is performed by a device 1, where the device 1 is an intelligent terminal supporting a remote control function, and the intelligent terminal includes, but is not limited to, a smart phone, a tablet computer, and the like.
The smart terminal is merely an example, and other existing or future devices and/or resource sharing platforms, as applicable to the present application, are also included in the scope of the present application and are incorporated herein by reference.
In this embodiment, in step S11, the target carrier frequency and the SPI bus are preset in the relevant codes of the device 1, and the preset method may be preset in the system codes, and the preset method may be burned into the system code memory of the device 1 in the production process, and after the preset, the preset carrier frequency and the SPI bus cannot be modified or a modifiable tool is provided to modify the target carrier frequency and the SPI bus according to actual conditions in the subsequent use process; or may be set and/or modified in the corresponding APP. The preset method is not limited, and other preset methods, such as those applicable to the present application, should be included in the scope of the present application.
Preferably, the determining a carrier based on the target carrier frequency and the set frequency of the SPI bus comprises:
determining the number of bits of a group of continuously transmitted bits based on a target carrier frequency and a set frequency of an SPI bus, wherein the group of continuously transmitted bits comprises continuously transmitting a plurality of bits with a value of 1 and then continuously transmitting a plurality of bits with a value of 0, and the corresponding relation between the number of continuously transmitted bits with a value of 0 and the number of continuously transmitted bits with a value of 1 is determined by a preset carrier duty ratio;
determining the corresponding number of a set of consecutively transmitted bits having values of 1 and 0 as a carrier.
The set of consecutively transmitted bits is a set of digital values, a certain number of digital 1 s are consecutively transmitted first, and a certain number of digital 0 s are consecutively transmitted, so that a set of consecutively transmitted digital 1 s and digital 0 s are determined as a carrier.
Preferably, if the number of bits of the set of consecutively transmitted bits is N, where the number of bits of consecutively transmitted bits with a value of 0 is M, and the preset carrier duty cycle is R, then:
R＝(N-M)/N，
wherein, the carrier duty ratio R is expressed as the ratio of the number of bits with a value of 1 in a group of continuously transmitted bits to the number of bits of the group of continuously transmitted bits.
The preset duty ratio R is determined according to an actual application scenario, for example, when the duty ratio R is one half, it indicates that, of the N bits continuously transmitted in the group, the number of bits with a value of 1 that are continuously transmitted first is (N/2), and then the number of bits with a value of 0 that are continuously transmitted is (N/2).
Preferably, if the target data is a, the target carrier frequency is F1 hz, the set frequency of the SPI bus is F2 hz, and the number of groups of carriers to be transmitted is K, then:
N＝F2/F1，
K＝A x F2，
wherein the target data a is composed of data codes having a preset time width.
Through APP operation visual remote control panel in equipment 1, each button of visual remote control panel corresponds a sign indicating number value, and the button can correspond and produce target data A once of every time of pressing, and target data A comprises a set of data code that has preset time width, preset time width and data code form of constituteing are confirmed by the remote control coding protocol that corresponds household electrical appliances support.
For example, the remote control supported by the common household appliance is an infrared remote control of 38KHz, in this embodiment, the target carrier frequency F1 is 38KHz, if the set frequency F2 of the SPI bus is 50MHz, and the duty ratio R is one half, the number of bits N in the carrier wave is 1316, where both the number of bits continuously transmitted with a value of 1 and the number of bits continuously transmitted with a value of 0 are 658, the time width occupied by each bit is 0.02 microseconds, the period of the carrier wave is 26.32 microseconds, and the actual carrier frequency is 37.99 KHz.
In this embodiment, in step S12, the determining the number of carrier transmission groups based on the carrier and the target data to be transmitted completes the code modulation of the target data by transmitting the corresponding number of carrier groups.
For example, the target data based on the remote control coding protocol as NEC extension protocol is composed of a start code, an address code, a data code and a data complement, wherein the start code is composed of a high signal with a duration of 9 milliseconds followed by a low signal with a duration of 4.5 milliseconds; the address code is 16 bits with 2 bytes, the data code is 8 bits with 1 byte, and the data code is used for checking the address code and the data code. Each bit in the address code, data code, or data complement has a value of logic 1 or logic 0, where a logic 1 consists of a high signal having a duration of 0.56 milliseconds followed by a low signal having a duration of 1.69 milliseconds; a logic 0 consists of a high signal of duration 0.56 milliseconds followed by a low signal of duration 0.565 milliseconds. If the carrier wave is modulated to be 38KHz of the infrared remote control carrier wave for remotely controlling the common household appliances, in the embodiment, the period of one group of carrier waves is 26.32 microseconds, and the time delay is 4.5 milliseconds after 342 groups of carrier waves are sent, namely the carrier waves are not sent within 4.5 milliseconds so as to realize the code modulation of the start code; delaying 1.69 milliseconds after transmitting 21 groups of carriers, namely not transmitting the carriers within 1.69 milliseconds to realize coded modulation of logic 1; the time delay is 0.565 milliseconds after the 21 groups of carriers are transmitted, namely, the carriers are not transmitted within 0.565 milliseconds to realize the code modulation of logic 0.
In another embodiment, the delay may be implemented by sending a certain number of bits with a bit value of 0, wherein the certain number is determined according to the time length of the delay. For example, a delay of 4.5 milliseconds may be achieved by sending 225000 bits with a bit value of 0; a delay of 1.69 milliseconds can be achieved by sending 84500 bits with a bit value of 0; the 0.565 milliseconds delay may be achieved by sending 28250 bits with a bit value of 0.
After the code modulation of the start code of the target data and the code modulation of logic 1 or logic 0 of each bit of the address code, the data code and the data inverse code of the target data A are all completed, the target data are modulated to the carrier wave of 37.99 KHz.
Preferably, the corresponding adjustment of the target carrier frequency may be achieved by adjusting the number of bits of the set of consecutively transmitted bits within a preset range.
The corresponding adjustment of the target carrier frequency can be realized by adjusting the number of bits of the group of continuously transmitted bits within a preset range, and the carrier frequency can be better adjusted by fine-tuning the number of bits in the carrier. For example, the remote control supported by the common household appliance is an infrared remote control of 38KHz, in this embodiment, the target carrier frequency is 38KHz, if the set frequency of the SPI bus is 50MHz, and the duty ratio is one half, the number of bits in the carrier is 1316, where both the number of bits continuously transmitted with a value of 1 and the number of bits continuously transmitted with a value of 0 are 658, the time width occupied by each bit is 0.02 microseconds, the period of the carrier is 26.32 microseconds, and the actual carrier frequency is 37.99 KHz; if the number of bits in the carrier is adjusted to 1314 and other parameters are not changed, the actual carrier frequency obtained is 38.05 KHz.
Preferably, the carrier wave can also be adjusted by adjusting the set frequency of the SPI bus.
The carrier wave can be adjusted by adjusting the set frequency of the SPI bus. For example, the remote control supported by the common household appliance is an infrared remote control of 38KHz, in this embodiment, the target carrier frequency is 38KHz, if the set frequency of the SPI bus is 50MHz, and the duty ratio is one half, the number of bits in the carrier is 1316, where both the number of bits continuously transmitted with a value of 1 and the number of bits continuously transmitted with a value of 0 are 658, the time width occupied by each bit is 0.02 microseconds, the period of the carrier is 26.32 microseconds, and the actual carrier frequency is 37.99 KHz; if the set frequency of the SPI bus is 30MHz and other parameters are not changed, the number of bits in the obtained carrier is 790, where both the number of bits with a value of 1 that are continuously transmitted and the number of bits with a value of 0 that are continuously transmitted are 395, the time width occupied by each bit is 0.033 microseconds, the period of the carrier is 26.33 microseconds, and the actual carrier frequency is 37.97 KHz.
FIG. 2 illustrates a block diagram of a system according to another aspect of the subject application, wherein the system comprises:
a carrier determination module 21 configured to determine a carrier based on a target carrier frequency and a set frequency of the SPI bus;
and the data coding and modulating module 22 is configured to determine a number of carrier transmission groups based on the carrier and the target data to be transmitted, so as to complete coding and modulation of the target data by transmitting the carriers of the number of the groups.
According to yet another aspect of the present application, there is also provided a computer readable medium having stored thereon computer readable instructions executable by a processor to implement the foregoing method.
According to another aspect of the present application, there is also provided a data encoding and modulating apparatus based on an SPI bus, wherein the apparatus includes:
one or more processors; and
a memory storing computer readable instructions that, when executed, cause the processor to perform operations of the method as previously described.
For example, the computer readable instructions, when executed, cause the one or more processors to: and determining a carrier based on the target carrier frequency and the setting frequency of the SPI bus, and determining the number of carrier transmission groups based on the carrier and the target data to be transmitted so as to finish the coding modulation of the target data by transmitting the carriers with the corresponding groups.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the apparatus claims may also be implemented by one unit or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
Claims (8)
1. A data coding modulation method based on an SPI bus is characterized by comprising the following steps:
determining the number of bits of a group of continuously transmitted bits based on a target carrier frequency and a set frequency of an SPI bus, wherein the group of continuously transmitted bits comprises continuously transmitting a plurality of bits with a value of 1 and then continuously transmitting a plurality of bits with a value of 0, and the corresponding relation between the number of continuously transmitted bits with a value of 0 and the number of continuously transmitted bits with a value of 1 is determined by a preset carrier duty ratio;
determining a group of continuously transmitted bits with values of 1 and 0 corresponding to the number of bits as a carrier, wherein the carrier is adjusted by adjusting the setting frequency of the SPI bus;
and determining the number of carrier transmission groups based on the carrier and the target data to be transmitted so as to complete the code modulation of the target data by transmitting the carrier with the corresponding number of groups.
2. The method of claim 1, wherein the correspondence between the number of consecutive transmissions of the bit having a value of 0 and the number of consecutive transmissions of the bit having a value of 1 is determined by a preset carrier duty cycle.
3. The method of claim 2, wherein if the number of bits of the set of consecutively transmitted bits is N, wherein the number of bits of consecutively transmitted bits with value 0 is M, and wherein the preset carrier duty cycle is R, then:
R＝(N-M)/N，
wherein, the carrier duty ratio R is expressed as the ratio of the number of bits with a value of 1 in a group of continuously transmitted bits to the number of bits of the group of continuously transmitted bits.
4. The method of claim 3, wherein if the target data is A, the target carrier frequency is F1 Hz, the set frequency of the SPI bus is F2 Hz, and the number of sets of carriers to be transmitted is K, then:
N＝F2/F1，
K＝A x F2，
wherein the target data a is composed of data codes having a preset time width.
5. The method according to any of claims 1 to 4, wherein the corresponding adjustment of the target carrier frequency is achieved by adjusting the number of bits of the set of consecutively transmitted bits within a preset range.
6. A data encoding modulation system based on SPI bus, the system comprising:
a carrier determination module for
Determining the number of bits of a group of continuously transmitted bits based on a target carrier frequency and the setting frequency of an SPI bus, wherein the group of continuously transmitted bits comprises continuously transmitting a plurality of bits with the value of 1 and then continuously transmitting a plurality of bits with the value of 0, the corresponding relation between the number of continuously transmitted bits with the value of 0 and the number of continuously transmitted bits with the value of 1 is determined by a preset carrier duty ratio, the group of continuously transmitted bits with the values of 1 and 0 corresponding to the number of bits is determined as a carrier, and the carrier is adjusted by adjusting the setting frequency of the SPI bus;
and the data coding and modulating module is used for determining the number of carrier sending groups based on the carrier and the target data to be sent so as to complete the coding and modulation of the target data by sending the carriers of the number of the groups.
7. A computer-readable medium, wherein,
stored thereon computer readable instructions to be executed by a processor to implement the method of any one of claims 1 to 5.
8. A data coding modulation device based on SPI bus, wherein the device comprises:
one or more processors; and
memory storing computer readable instructions that, when executed, cause the processor to perform the operations of the method of any of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911273175.9A CN111009111B (en) | 2019-12-12 | 2019-12-12 | Data coding modulation method and system based on SPI bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911273175.9A CN111009111B (en) | 2019-12-12 | 2019-12-12 | Data coding modulation method and system based on SPI bus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111009111A CN111009111A (en) | 2020-04-14 |
| CN111009111B true CN111009111B (en) | 2021-08-27 |
Family
ID=70115813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911273175.9A Active CN111009111B (en) | 2019-12-12 | 2019-12-12 | Data coding modulation method and system based on SPI bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111009111B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116346950B (en) * | 2023-05-23 | 2023-09-29 | 南京芯驰半导体科技有限公司 | Signal processing method, device and system based on SPI controller |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993005580A1 (en) * | 1991-08-30 | 1993-03-18 | Thomson Consumer Electronics, S.A. | Method of compressing data code and apparatus for using the compressed data code |
| CN101320516A (en) * | 2008-07-09 | 2008-12-10 | 四川长虹电器股份有限公司 | Method for decoding infrared ray by waveshape learning circuit |
| CN101610371A (en) * | 2009-07-31 | 2009-12-23 | 青岛海信电器股份有限公司 | The communication means of television set and chip in television |
| CN102545999A (en) * | 2012-01-10 | 2012-07-04 | 电子科技大学 | Infrared communication signal modulating and receiving method |
| CN104574931A (en) * | 2015-01-04 | 2015-04-29 | 中兴通讯股份有限公司 | Infrared remote control circuit, method and terminal |
| CN106301555A (en) * | 2016-08-11 | 2017-01-04 | 北京大学 | A kind of signal transmitting method for light projection and transmitter |
| CN110445548A (en) * | 2019-08-30 | 2019-11-12 | 科大智能电气技术有限公司 | A kind of infrared carrier wave communication code method and system |
-
2019
- 2019-12-12 CN CN201911273175.9A patent/CN111009111B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993005580A1 (en) * | 1991-08-30 | 1993-03-18 | Thomson Consumer Electronics, S.A. | Method of compressing data code and apparatus for using the compressed data code |
| CN101320516A (en) * | 2008-07-09 | 2008-12-10 | 四川长虹电器股份有限公司 | Method for decoding infrared ray by waveshape learning circuit |
| CN101610371A (en) * | 2009-07-31 | 2009-12-23 | 青岛海信电器股份有限公司 | The communication means of television set and chip in television |
| CN102545999A (en) * | 2012-01-10 | 2012-07-04 | 电子科技大学 | Infrared communication signal modulating and receiving method |
| CN104574931A (en) * | 2015-01-04 | 2015-04-29 | 中兴通讯股份有限公司 | Infrared remote control circuit, method and terminal |
| CN106301555A (en) * | 2016-08-11 | 2017-01-04 | 北京大学 | A kind of signal transmitting method for light projection and transmitter |
| CN110445548A (en) * | 2019-08-30 | 2019-11-12 | 科大智能电气技术有限公司 | A kind of infrared carrier wave communication code method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111009111A (en) | 2020-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110287135B (en) | Bus polling method and device | |
| CN111009111B (en) | Data coding modulation method and system based on SPI bus | |
| CN103677714A (en) | Information processing method and electronic equipment | |
| CN113034886A (en) | Remote control method and device | |
| CN113706851A (en) | Remote controller infrared signal decoding method and device and remote controller | |
| CN113223445A (en) | Data transmission method and system applied to LED chip and related assembly | |
| US11339989B2 (en) | Communication method and device for air conditioner, outdoor unit, indoor unit, and air conditioner | |
| KR20050007818A (en) | Power ramping controller of GSM and GPRS and power ramping method | |
| CN102739587A (en) | Audio data transmission method | |
| CN111614588B (en) | Signal modulation method, device, equipment and computer readable storage medium | |
| CN110808823B (en) | Sequence mapping method and device of common reference signal, storage medium and terminal | |
| CN103729998A (en) | Decoding method and device | |
| CN105259744A (en) | Alarm clock controlling method and device, alarm clock and electronic equipment | |
| CN115515168A (en) | Radio frequency parameter adaptation method, device, equipment and computer readable storage medium | |
| CN103686263A (en) | Method, equipment and system for data processing | |
| CN107357547B (en) | Audio control method, audio control device and audio equipment | |
| EP2613300B1 (en) | Electronic apparatus and method for detecting information using the same | |
| CN1092895C (en) | Wireless transmission output control circuit for TDMA communication | |
| CN104283572A (en) | Method and device for controlling input information of convolutional code decoder | |
| CN114222411B (en) | PC digital audio/video rhythm control method and device and storage medium | |
| CN108269392B (en) | Decoding method and device for infrared remote controller | |
| CN111324808B (en) | Method and equipment for providing information flow | |
| CN104505106A (en) | Terminal | |
| CN106301118A (en) | Reversion control method based on vertical coil winding machine and system | |
| CN106276415A (en) | The foot rotating method of horizontal coil winding machine and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |