CN101751769A - Remote control transmitting and decoding system and implementation method thereof - Google Patents
Remote control transmitting and decoding system and implementation method thereof Download PDFInfo
- Publication number
- CN101751769A CN101751769A CN200810217979A CN200810217979A CN101751769A CN 101751769 A CN101751769 A CN 101751769A CN 200810217979 A CN200810217979 A CN 200810217979A CN 200810217979 A CN200810217979 A CN 200810217979A CN 101751769 A CN101751769 A CN 101751769A
- Authority
- CN
- China
- Prior art keywords
- remote control
- control mode
- low level
- card extender
- remote
- 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.)
- Granted
Links
Images
Landscapes
- Selective Calling Equipment (AREA)
Abstract
The invention is applicable in the technical field of remote control and provides a remote control transmitting and decoding system and implementation method thereof. The remote control transmitting system comprises a control device and an adapter plate, wherein the control device is used to generate a remote control code waveform corresponding to the remote control code edited or selected by a user and to send the remote control code waveform to the adapter plate, and the adapter plate is used to convert the remote control code waveform to a remote control signal and then send out the signal. The remote control transmitting and decoding system can transmit the standard remote control code or the remote control code edited by the user according to needs so as to conveniently finish the transmission of user defined remote control code as well as to identify and decode the remote control code. The remote control transmitting and decoding system can also be used in automatic testing equipment to replace manpower to transmit remote control signals and be used as a simple remote controller testing device. The remote control transmitting and decoding system has the advantages of low cost, high accuracy and easy operation.
Description
Technical field
The invention belongs to the telecontrol engineering field, relate in particular to a kind of remote-control transmitting and decode system.
Background technology
Telepilot is the requisite accessories of a lot of electric equipments, also to use telepilot often in electronic product research and development and the test job, in the R﹠D process of electronic product, tend to accumulate a lot of telepilots, what often can't distinguish so when in use that each telepilot sends out is the sign indicating number of what type, how many key assignments of also not knowing remote controller key is, telepilot goes examination one by one in this case, go measured waveform with oscillograph, analyze the key assignments of each key, cumbersome, spend the regular hour.
In addition, sometimes need to use various remote control mode to come test macro, but the type of telepilot is limited, can not sends the remote control mode of appointment as required.
Therefore, be necessary to design a kind of technical scheme, can launch as required specify remote control mode and can be very easily to the remote control mode that receives and discern and decode.
Summary of the invention
The object of the present invention is to provide a kind of remote-control transmitting and decode system and implementation method thereof, be intended to solve as required that remote control mode is specified in emission and remote control mode that receives and the problem of discerning and decoding.
The present invention realizes like this, a kind of remote control launching system, described remote control launching system comprises control device and card extender, described control device is used for editing or the remote control mode selected generates corresponding remote control mode waveform and outputs to described card extender according to the user, and described card extender is used for becoming remote signal to launch described remote control mode waveform transformation.
Described card extender comprises the parallel port, and described control device connects described card extender by described parallel port, and described control device outputs to described card extender by described parallel port with power supply signal, carrier signal and remote control mode high-low level sequence.
Described card extender also comprises and door, triode and infrared-emitting diode, described and door is used for described remote control mode high-low level sequence modulation on described carrier signal, described triode is used for the remote control mode high-low level sequence after the modulation is amplified, and described infrared transmission diode is used for the remote control mode high-low level sequence after the modulation is launched.
The present invention also provides a kind of remote control decoding system, described remote control decoding system comprises control device and card extender, described card extender is used for receiving remote signal, the remote signal that receives is carried out outputing to described opertaing device after the demodulation, and described opertaing device is used for to described remote signal decoding.
Described card extender comprises parallel port and infrared receiving terminal, described control device connects described card extender by described parallel port, described infrared receiving terminal is used for described remote signal is reduced to the high-low level sequence, exports described opertaing device by described parallel port.
The present invention also provides a kind of method of launching remote control mode, and described method comprises:
A, editor's self-defining remote control sign indicating number are stored in the opertaing device, perhaps choice criteria remote control mode from opertaing device;
B, described opertaing device generate corresponding remote control mode waveform according to editor's the self-defining remote control sign indicating number or the standard remote control mode of selection, and described remote control mode waveform is transferred to card extender;
C, described card extender become remote signal to launch described remote control mode waveform transformation.
Wherein step a specifically comprises:
The logical value of a1, editor preamble code, user code and numeric data code level and the time span of level generate remote control mode waveform configuration body array, and perhaps the type of choice criteria remote control mode is input to described opertaing device with user code and numeric data code then.
Wherein step b specifically comprises:
B1, described opertaing device generate corresponding high-low level sequence according to editor's the self-defining remote control sign indicating number or the standard remote control mode of selection, and described high-low level sequence and carrier signal are transferred to described card extender.
The present invention also provides a kind of method of remote control decoding, and described method comprises:
A, the remote signal that receives is reduced into the high-low level sequence, with described high-low level sequence transmission to opertaing device;
B, described opertaing device generate the remote control mode waveform according to described high-low level sequence.
Wherein step b also comprises:
B1, described opertaing device go out preamble code according to described high-low level sequence analysis, with the preamble code comparison of the preamble code that parses and known remote control mode, judge the type of remote control mode;
B2, described opertaing device go out user code and numeric data code according to described high-low level sequence analysis, judge whether described user code and numeric data code meet the rule of the type remote control mode of being judged.
The present invention overcomes the deficiencies in the prior art, remote-control transmitting that provides and decode system can be launched the remote control mode that the standard remote control mode chosen or user edit as required, finishing the emission of self-defining remote control mode very easily, and to the identification and the decoding of remote control mode; Also can be used in the automated test device, replace artificial emission remote signal etc., can also be as simple telepilot testing apparatus.That the present invention has is with low cost, accuracy is high, easy-operating advantage.
Description of drawings
Fig. 1 is the system diagram that the embodiment of the invention provides;
Fig. 2 is the circuit diagram of card extender of the present invention;
Fig. 3 is the remote-control transmitting process flow diagram that the embodiment of the invention provides;
Fig. 4 is that the PC that the embodiment of the invention provides holds the emission remote control mode surface chart of Control Software;
Fig. 5 is that the remote control that the embodiment of the invention provides receives process flow diagram;
Fig. 6 is that the PC that the embodiment of the invention provides holds the reception remote control mode surface chart of Control Software.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The remote-control transmitting that Fig. 1 provides for the embodiment of the invention and the schematic diagram of decode system comprise PC and card extender, and PC is connected by the parallel port on the card extender with card extender.When remote-control transmitting that provides when the embodiment of the invention and decode system are used for launching remote signal, PC is used for editing or select remote control mode for the user, edit or the remote control mode selected generates corresponding remote control mode waveform and outputs to card extender according to the user, card extender is used for becoming infrared signal to launch the remote control mode waveform transformation of parallel port output; When system that the embodiment of the invention provides is used for remote signal decoded, card extender is used for the remote signal that receives is carried out demodulation, remove carrier signal, signal is reduced to the high-low level sequence reverse with transmitting terminal, output to PC by the parallel port, PC is used for remote control mode is decoded, and generates corresponding remote control mode waveform.
Wherein, the concrete circuit diagram of card extender as shown in Figure 2, pin PIN2, the PIN3 of parallel port J1, PIN4 ..., the PIN9 parallel connection, make these pin output high level by PC end Control Software, be the card extender power supply, because the pin electric current of PC parallel port output is limited, if necessary, also can external+5V power supply, i.e. BT1 among the figure.Diode D2 plays rectification, exports more stable DC level, simultaneously the level of external power source BT1 and parallel port output is isolated, and both are not influenced each other.Resistance R 1 and resistance R 3 play current limliting and provide suitable bias voltage for triode Q1.Pin PIN14 is used for exporting the high-low level sequence of remote control mode, and pin PIN16 is used for exporting the carrier wave of high frequency, and both are by the coded signal after output is modulated behind the logical.U1 is and the door chip, has realized the modulation of remote control mode.
Coded signal after ovennodulation amplifies by triode Q1, drives infrared-emitting diode D1 then and launches corresponding infrared signal.In order to guarantee the stability of waveform, other filter capacitor C1 and the capacitor C 2 of adding of power supply VCC.
The remote control mode receiving unit is mainly integrated infrared receiving terminal U2, and its effect is to remove carrier signal, and signal is reduced to the high-low level sequence reverse with transmitting terminal, outputs to parallel port pin PIN13, by PC remote control mode is decoded.On the power supply input pin of U1, add filter capacitor C3 and capacitor C 4, guaranteed the waveform stabilization of power supply and output.Meet pull-up resistor R4 at output pin, guaranteed the scope of the high level of output waveform.The IR pin of U2 is the remote signal output terminal of infrared receiving terminal, and the GND pin is an earth terminal.
The process flow diagram of the emission remote control mode that accompanying drawing 3 provides for the embodiment of the invention specifically comprises following step:
1, selects remote control mode or editor's remote control mode.
If known standard remote control mode, the user directly selects from the default menu of PC end Control Software, and imports the numerical value of user code and numeric data code in the respective dialog frame; Remote control mode if not known needs User Defined, creates a text, and the input data import in Control Software then.
Self-defining remote control mode waveform constitutes (being called remote control mode waveform configuration body array among the present invention) by a following structure array:
typedef?struct?wave
{
BYTE cLevel; The high or low attribute of // level
WORD wLength; The length of // level
}Structwave；
Structwave?wave[50]；
The user is in text, and in chronological sequence order deposits the logical value of level of whole remote control mode (comprising preamble code, user code and numeric data code) and the time span of level successively in, and is as follows:
0,4000//0 expression low level 4000 is a level length (unit: us)
1，4000
0，800
1，800
………
Preserve above-mentioned text then, in PC end Control Software, import again.
2, select carrier wave
Selects remote control mode is modulated on the carrier wave of what frequency on PC end Control Software, that uses always has 38Khz and a 56Khz.
3, emission
The remote control mode that PC selects according to the user or read the text that the user edits remote control mode, the high-low level sequence that generation will be launched, the pin that drives the parallel port is then exported corresponding waveform.The signal of output comprises three kinds: high level signal (being used to provide power supply), carrier signal and remote control mode high-low level signal.
For example to launch the waveform of RCA sign indicating number, at first call PC end Control Software interface (wherein IR TOOL is the infrared remote control instrument) as shown in Figure 4, choose emission (send), selecting carrier wave by " carrier wave " dialog box is 38KHZ, the remote control mode type that the code type dialog box is selected to launch is the RCA sign indicating number, input user code and numeric data code are clicked " emission " button then and are got final product.
Launch self-defining remote control mode,, click the Import button then,, click " emission " button again and get final product the data importing of text according to top format editing text.
The process flow diagram of the reception remote control mode that accompanying drawing 5 provides for the embodiment of the invention specifically comprises following step:
1, detects the remote control look-at-me, obtain a frame waveform
The remote control input pin of monitoring parallel port, if when having the low level look-at-me to produce, waveform with regard to the opening entry back, use an array to come wave recording, when level changes, just enabling counting device counting according to the time that the difference of counter is calculated each level, obtains a frame waveform data at last.
Following code is for accepting the process of a frame remote control mode:
do
{
St1=ReadPin (); // read the pin state
If (st1==(! St_pre)) // and different with preceding state, illustrate to have the level saltus step
{
DelayUs (50); // go to disturb
st2＝ReadPin()；
If (st1==st2) // have rising edge or negative edge to produce
{
st_pre＝st1；
If (st1) // rising edge
{
nh++；
WaveIR[np]=MeasureHighLevelWidth (); // read the high level width
}
Else // negative edge
{
nl++；
WaveIR[np]=MeasureLowLevelWidth (); // read low level width
}
If (waveIR[np]==0) // overtime
{
break；
}
np++；
}
}
While (np＜=80); // receive 80 pulses at most
Above-mentioned code can deposit the width of the high-low level sequence that receives in array waveIR[80] in.
2, separate preamble code
Preamble code generally is made up of one section low level and one section high level, judges according to the time span of these two level earlier, compares with the preamble code of known remote control mode, judges the type of remote control mode thus.The preamble code coupling that were it not for the preamble code of known remote control mode and solve is then thought invalid remote control mode.
The following procedure code is for judging the process of preamble code:
if((waveIR[1]＞3000&&waveIR[1]＜5000)
&&(waveIR[0]＞3000&&waveI?R[0]＜5000))
{
RcaDecode (hwnd); // judge it is the RCA sign indicating number according to the time span of preamble code, advance
Go into corresponding decoding program
}
else?if((waveIR[1]＞650&&waveIR[1]＜1050)
&&(waveIR[0]＞650&&wavelR[0]＜1050)) //RC5?CODE
{
Rc5Decode (hwnd); // judge it is the RC5 sign indicating number according to the time span of preamble code,
Enter corresponding decoding program
}
3, separate user code and numeric data code
After solving preamble code, obtain the type of remote control mode, the type according to remote control mode continues user code and numeric data code are decoded then.The principle of decoding is as follows: according to the type of remote control mode, can learn the time width of its logical zero and logical one, RCA sign indicating number for example, the width of logical zero is that the 500us high level adds the 2000us low level, the width of logical one is that the 500us high level adds the 1500us low level.Compare with time value that obtains in the above-mentioned array and standard value, obtain the logical value of a string remote control mode, converting then obtains the numerical value of user code and numeric data code.According to the type of remote control mode the user code and the numeric data code that obtain are judged then, whether correctly seen, correctly then show and drawing waveforms.The specific procedure code is as follows:
void?RcaDecode(HWND?hwnd)
{
DWORD?dwShiftData＝0；
If (np＞=50) // at least 50 pulses
{
BYTE?i；
for(i＝2；i＜＝48；i+＝2)//24bit
{
if((waveIR[i]＞250)&&(waveIR[i]＜750)&&
(waveIR[i+1]＞700)&&(waveIR[i+1]＜1300))
The RCA of { //sign indicating number logical one
dwShiftData＜＜＝1；
dwShiftData|＝1；
}
else?if((waveIR[i]＞250)&&(waveIR[i]＜750)&&
(waveIR[i+1]＞1700)&&(waveIR[i+1]＜2300))
The RCA of { //sign indicating number logical zero
dwShiftData＜＜＝1；
dwShiftData|＝0；
}
else
{
Break; // be idler Pulse
}
}
If (i==50) // 50 pulse all is effective
{
BYTE cdata[4]=0,0,0,0}; // a string remote control mode comprises four bytes
Cdata[0]=(BYTE) dwShiftData＞＞20; // user code
Cdata[1]=(BYTE) (dwShiftData＞＞12); // numeric data code
Cdata[2]=((BYTE) (dwShiftData＞＞8) ﹠amp; 0x0f) | 0xf0; // user code radix-minus-one complement
Cdata[3]=(BYTE) dwShiftData; // numeric data code radix-minus-one complement
if((cdata[0]＝＝～cdata[2])&&(cdata[1]＝＝～cdata[3]))
{ // meet user code and the rule of numeric data code
cCodeType＝0；
Cuscode=cdata[0]; // obtain user code
Datacode=cdata[1]; // obtain numeric data code
::PostMessage(hwnd，WM_RECVDATA，0，1)；
}
}
}
}
4, drawing waveforms
After receiving a frame waveform, according to the length of the high-low level of waveform the waveform of drawing out according to certain ratio, the information of can intuitive and convenient checking waveform.Waveform and actual signal still have certain difference, only do with reference to using.
When receiving remote control mode, at first call PC end Control Software interface (IR TOOL infrared remote control instrument) as shown in Figure 6, choose reception (receive), select the carrier frequency corresponding by " carrier wave " dialog box with transmitting terminal, click beginning then, use a teleswitch then and penetrate facing to receiving hair, the code type that then solves, user code, numeric data code and waveform will be presented on the interface automatically.
The above only is preferred embodiment of the present invention; not in order to restriction the present invention; all any modifications of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc.; as the PC in the embodiment of the invention; also can adopt other the control device that possesses identical function, all should be included within protection scope of the present invention.
Claims (10)
1. remote control launching system, it is characterized in that, described remote control launching system comprises control device and card extender, described control device is used for editing or the remote control mode selected generates corresponding remote control mode waveform and outputs to described card extender according to the user, and described card extender is used for becoming remote signal to launch described remote control mode waveform transformation.
2. system according to claim 1, it is characterized in that, described card extender comprises the parallel port, described control device connects described card extender by described parallel port, and described control device outputs to described card extender by described parallel port with power supply signal, carrier signal and remote control mode high-low level sequence.
3. system according to claim 2, it is characterized in that, described card extender also comprises and door, triode and infrared-emitting diode, described and door is used for described remote control mode high-low level sequence modulation on described carrier signal, described triode is used for the remote control mode high-low level sequence after the modulation is amplified, and described infrared transmission diode is used for the remote control mode high-low level sequence after the modulation is launched.
4. remote control decoding system, it is characterized in that, described remote control decoding system comprises control device and card extender, described card extender is used for receiving remote signal, the remote signal that receives is carried out outputing to described opertaing device after the demodulation, and described opertaing device is used for to described remote signal decoding.
5. remote control decoding according to claim 4 system, it is characterized in that, described card extender comprises parallel port and infrared receiving terminal, described control device connects described card extender by described parallel port, described infrared receiving terminal is used for described remote signal is reduced to the high-low level sequence, exports described opertaing device by described parallel port.
6. method of launching remote control mode, described method comprises:
A, editor's self-defining remote control sign indicating number are stored in the opertaing device, perhaps choice criteria remote control mode from opertaing device;
B, described opertaing device generate corresponding remote control mode waveform according to editor's the self-defining remote control sign indicating number or the standard remote control mode of selection, and described remote control mode waveform is transferred to card extender;
C, described card extender become remote signal to launch described remote control mode waveform transformation.
7. method according to claim 6 is characterized in that, wherein step a specifically comprises:
The logical value of a1, editor preamble code, user code and numeric data code level and the time span of level generate remote control mode waveform configuration body array, and perhaps the type of choice criteria remote control mode is input to described opertaing device with user code and numeric data code then.
8. method according to claim 6 is characterized in that, wherein step b specifically comprises:
B1, described opertaing device generate corresponding high-low level sequence according to editor's the self-defining remote control sign indicating number or the standard remote control mode of selection, and described high-low level sequence and carrier signal are transferred to described card extender.
9. the method for a remote control decoding, described method comprises:
A, the remote signal that receives is reduced into the high-low level sequence, with described high-low level sequence transmission to opertaing device;
B, described opertaing device generate the remote control mode waveform according to described high-low level sequence.
10. method according to claim 9 is characterized in that, wherein step b also comprises:
B1, described opertaing device go out preamble code according to described high-low level sequence analysis, with the preamble code comparison of the preamble code that parses and known remote control mode, judge the type of remote control mode;
B2, described opertaing device go out user code and numeric data code according to described high-low level sequence analysis, judge whether described user code and numeric data code meet the rule of the type remote control mode of being judged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810217979 CN101751769B (en) | 2008-12-03 | 2008-12-03 | Remote control transmitting and decoding system and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810217979 CN101751769B (en) | 2008-12-03 | 2008-12-03 | Remote control transmitting and decoding system and implementation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101751769A true CN101751769A (en) | 2010-06-23 |
| CN101751769B CN101751769B (en) | 2013-04-17 |
Family
ID=42478696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810217979 Expired - Fee Related CN101751769B (en) | 2008-12-03 | 2008-12-03 | Remote control transmitting and decoding system and implementation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101751769B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074108A (en) * | 2010-12-24 | 2011-05-25 | 苏州华芯微电子股份有限公司 | Remote control code intelligent decoding system |
| CN104841142A (en) * | 2014-02-18 | 2015-08-19 | 上海九鹰电子科技有限公司 | Remote control model airplane |
| CN106373376A (en) * | 2016-08-30 | 2017-02-01 | 熊翊程 | Infrared repeater waveform transmission and encoding method |
| CN106572375A (en) * | 2015-10-08 | 2017-04-19 | 深圳市金锐显数码科技有限公司 | TV remote control method and apparatus |
| CN106991803A (en) * | 2017-03-30 | 2017-07-28 | 深圳市九洲电器有限公司 | Remote control device system and remote control |
| CN107170227A (en) * | 2017-06-29 | 2017-09-15 | 深圳市九洲电器有限公司 | IR emitters and method |
| CN109830098A (en) * | 2019-03-11 | 2019-05-31 | 攀枝花学院 | Infrared encoder and infrared communication device based on FPGA |
| CN111062116A (en) * | 2019-11-13 | 2020-04-24 | 天津津航计算技术研究所 | Method for accurately identifying analog quantity key information with unknown characteristics |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100442861C (en) * | 2004-01-17 | 2008-12-10 | 深圳创维－Rgb电子有限公司 | General one-key telecontrol regulation method and apparatus |
| CN1822067A (en) * | 2006-01-13 | 2006-08-23 | 深圳创维－Rgb电子有限公司 | Programmable infrared remote control method and its circuit |
-
2008
- 2008-12-03 CN CN 200810217979 patent/CN101751769B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074108A (en) * | 2010-12-24 | 2011-05-25 | 苏州华芯微电子股份有限公司 | Remote control code intelligent decoding system |
| CN104841142A (en) * | 2014-02-18 | 2015-08-19 | 上海九鹰电子科技有限公司 | Remote control model airplane |
| CN106572375A (en) * | 2015-10-08 | 2017-04-19 | 深圳市金锐显数码科技有限公司 | TV remote control method and apparatus |
| CN106373376A (en) * | 2016-08-30 | 2017-02-01 | 熊翊程 | Infrared repeater waveform transmission and encoding method |
| CN106991803A (en) * | 2017-03-30 | 2017-07-28 | 深圳市九洲电器有限公司 | Remote control device system and remote control |
| WO2018176982A1 (en) * | 2017-03-30 | 2018-10-04 | 深圳市九洲电器有限公司 | Remote controller and remote control system thereof |
| CN106991803B (en) * | 2017-03-30 | 2020-08-07 | 深圳市九洲电器有限公司 | Remote control system and remote controller |
| CN107170227A (en) * | 2017-06-29 | 2017-09-15 | 深圳市九洲电器有限公司 | IR emitters and method |
| CN109830098A (en) * | 2019-03-11 | 2019-05-31 | 攀枝花学院 | Infrared encoder and infrared communication device based on FPGA |
| CN111062116A (en) * | 2019-11-13 | 2020-04-24 | 天津津航计算技术研究所 | Method for accurately identifying analog quantity key information with unknown characteristics |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101751769B (en) | 2013-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101751769B (en) | Remote control transmitting and decoding system and implementation method thereof | |
| US6097520A (en) | Remote control receiver and method of operation | |
| CN1241029C (en) | Test system for smart card and identification devices and like | |
| CN102075788B (en) | Automatic detection method for set top box | |
| CN107769865B (en) | Automatic test method for radio frequency parameters of Bluetooth module | |
| CN100561539C (en) | A kind of automatization test system and method for simulating Infrared remote controller | |
| CN105093094A (en) | Automatic chip power-on reliability detection device and detection method | |
| CN202305756U (en) | Relay service life tester and relay service life test system | |
| CN2620283Y (en) | Automatic fast measurer for relay | |
| CN105850021A (en) | Current meter for load modulation communication receiver architecture | |
| US8844825B2 (en) | System and method for testing magnetic stripe decoding chip | |
| CN102346234B (en) | Functional test method of I2S (Inter-IC Sound Bus) interface | |
| CN103413747B (en) | Space plasma measurement apparatus | |
| CN102175965B (en) | Automatic testing method for magnetic card decoding circuit | |
| CN105374202A (en) | Radio frequency remote controller automatic test system | |
| CN104484685B (en) | A kind of method and system of bulk issue smart card | |
| CN201369728Y (en) | Optical module receiving end performance testing device | |
| JPH0281114A (en) | Cordless keyboard | |
| CN208110030U (en) | A kind of communication test plate of ammeter communication module | |
| CN103532686A (en) | Serial data transceiver circuit with line sequence self-adaptive function, and control method thereof | |
| CN113128117A (en) | Low-voltage centralized reading, operation and maintenance simulation device based on AI artificial neural network research | |
| CN104580742B (en) | Device and method for transmitting data on basis of audio port | |
| Vuza et al. | RFID readers for the HDX protocol-a designer’s perspective | |
| CN208833877U (en) | Amplitude-frequency characteristic tester and amplitude-frequency characteristic test macro | |
| CN112462248A (en) | Test signal output system and use method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20171203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |