CN101365274A - Single line transmission method for LED chip cascade signal - Google Patents
Single line transmission method for LED chip cascade signal Download PDFInfo
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- CN101365274A CN101365274A CNA2008101169261A CN200810116926A CN101365274A CN 101365274 A CN101365274 A CN 101365274A CN A2008101169261 A CNA2008101169261 A CN A2008101169261A CN 200810116926 A CN200810116926 A CN 200810116926A CN 101365274 A CN101365274 A CN 101365274A
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Abstract
The invention discloses a single wire transmission method for LED-chip cascade signals. The method comprises the following steps of connecting a plurality of LED chips to be cascaded in series with a single cascade transmission line; and transmitting cascade signals to be sent to the LED chips, to the plurality of cascade LED chips in sequence with a single cascade transmission line. The invention adopts the single cascade transmission line for the transmission of the cascade signals, thereby transmitting the cascade signals to the cascade LED chips singly. Therefore, the method simplifies the transmission of the cascade signals and increases the success rate of the signal transmission.
Description
Technical field
The present invention relates to the implementation method of signal transmission between a kind of semiconductor device, relate in particular to the transmission method of cascade signal between a kind of led chip.
Background technology
In the middle of LED lamp decoration system,, as if will realizing large-scale lamp decoration system, thereby just must carry out the more lamp point of cascade cascade to led chip because each led chip lamp point number that can drive is limited.Described lamp point is meant a pixel, can be made up of three LED lamps, for example red LED lamp, green LED lamp and blue led lamp.
Existing led chip often adopts four or more cascade transmission lines to realize the transmission of cascade signal when carrying out cascade.The lamp decoration system that comprises three cascade led chips, as shown in Figure 1, between chip 101 and the chip 102, use four level on lines to carry out cascade respectively between chip 102 and the chip 103, four in parallel cascade transmission lines are transmission signals clk (Clock successively from top to bottom, clock signal), data (data-signal), load (being written into signal), oe (output enable, output enable signal); Simultaneously between chip, respectively from left to right successively serial transmission go down, finish the transmission of cascade signal, realize the control of lamp point that each led chip is controlled simultaneously by cascade signal.
Existing cascade signal transmission method, need to guarantee strict sequential matching relationship between the signal on four transmission lines (clk, data, load, oe), in case it is inaccurate that sequential cooperates, data-signal just can not correctly transmit, the cascade signal of whole lamp decoration system also just can't transmit, and causes the paralysis of whole lamp decoration system.
Therefore, there is defective in prior art, needs further improvement and develops.
Summary of the invention
The object of the present invention is to provide a kind of single line transmission method of led chip cascade signal, make the transmission of cascade signal not be subjected to the restriction of sequential matching relationship.
Technical scheme of the present invention is as follows:
A kind of single line transmission method of led chip cascade signal may further comprise the steps:
A, a plurality of led chips that will cascade are connected with single cascade transmission line;
B, will send to the cascade signal of described led chip, be transferred to the led chip of described a plurality of cascades by single cascade transmission line successively.
Described method, described step B specifically may further comprise the steps:
B1, described cascade signal send to a led chip of described single cascade transmission line termination;
B2, described led chip send to continuous led chip with described cascade signal successively by described single cascade transmission line.
Described method, wherein, among the described step B2, described led chip sends described cascade signal process, specifically may further comprise the steps,
B21, described cascade signal is decoded;
B22, in decoded cascade signal, intercept part signal, and send to the LED that is connected with described led chip;
B23, the coding of the decoded signal after will intercepting, and send to the led chip that is connected with this led chip.
Described method, wherein, described step B21 specifically comprises the extraction to frequency signal, data-signal and synchronizing signal.
Described method, wherein, described step B21 also comprises the validity of frequency signal is confirmed.
Described method, wherein, described step B21 also comprises described data-signal is carried out protocol-decoding.
Described method, wherein, among the described step B22, the signal of described intercepting is the part of data-signal.
Described method wherein, among the described step B22, also comprises the data-signal of described intercepting is stored.
Described method wherein, among the described step B22, comprises that also the signal with intercepting sends to the chip for driving that is connected with described led chip, is sent to the LED of connection by described chip for driving.
Compared with prior art, the invention provides a kind of single line transmission method of led chip cascade signal, adopt a cascade transmission line cascade signal, cascade signal is transferred to the led chip of cascade singlely, reduce the quantity of signal in the transmission course, improved the success rate of signal transmission.
Description of drawings
Fig. 1 is the schematic diagram of led chip cascade signal transmission course under the prior art;
The schematic diagram of single line transmission course when Fig. 2 is chip for driving for led chip of the present invention;
The flow chart of single line transmission method when Fig. 3 is chip for driving for led chip of the present invention;
The schematic diagram of single line transmission course when Fig. 4 is control chip for led chip of the present invention;
The flow chart of single line transmission method when Fig. 5 is control chip for led chip of the present invention.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in further detail.
The single line transmission method of led chip cascade signal provided by the invention, to want a plurality of led chips of cascade to connect in the LED lamp decoration system with single cascade transmission line, the control unit of described lamp decoration system will send to the cascade signal of described a plurality of led chips, be transferred to described a plurality of led chip successively by single cascade transmission line.The control unit of lamp decoration of the present invention system is by the cascade signal of a serial, adopt one to follow the cascade transmission line to transmit all led chips in turn, do not need to consider the sequential relationship of signal in the transmission course, this method makes cascade signal be transferred to each led chip under the situation that the transmission fault rate reduces.
First specific embodiment of the present invention is, led chip is as chip for driving, the single line transmission method of LED chip for driving as shown in Figure 2, chip for driving 201, chip for driving 202 and cascade transmission line of chip for driving 203 usefulness that will cascade be cascaded.LED lamp decoration of the present invention system comprises three led chips, promptly described chip for driving 201, chip for driving 202 and chip for driving 203.The control unit of described lamp decoration system is with control signal, and promptly cascade signal at first is transferred to described chip for driving 201.Described chip for driving 201 receives described cascade signal, described cascade signal is decoded, and utilize decoded signal driving LED lamp to light; Simultaneously decoded signal recompile is sent to the described chip for driving 202 of connection; Described chip for driving 202 when realizing that the driving LED lamp is lighted, is transferred to described chip for driving 203 with cascade signal with the identical processing method of described chip for driving 201; Described chip for driving 203 is also with the identical processing method of described chip for driving 201, realizes that the driving LED lamp lights.This method specifically may further comprise the steps, as shown in Figure 3:
The control unit of step 301, lamp decoration system sends to chip for driving 201 with the cascade signal of single line transmission.
The control indicator light of step 305, described chip for driving brightens, and represents that mistake appears in this chip for driving, and the single line transmission course of cascade signal of the present invention finishes.Whether described frequency signal effectively deterministic process, is convenient to determine the chip that breaks down.
The required data of this chip for driving of intercepting in step 308, the parallel data behind described protocol-decoding.
Described chip for driving 202 is transmitted described cascade signal according to step 302 to 311 method.
Described chip for driving 203 is handled described cascade signal according to step 302 to 311 method.
The single line transmission method of cascade signal of the present invention, the quantity of its cascade chip for driving is unrestricted, owing to adopt single cascade transmission line cascade signal, transmitting a plurality of signals simultaneously with prior art compares, at first, needn't consider the sequential matching relationship of a plurality of signals, make the cascade signal transmission course more succinct, the failure rate of transmission reduces, stability improves; Secondly, transmission method of the present invention is not high to the logical design of transmission system, has reduced the cost from design; At last, the present invention has reduced the use amount of cable with single cascade transmission line cascade signal, has saved cost.
Second specific embodiment of the present invention be, led chip is as control chip, the single line transmission method of LED control chip as shown in Figure 4, control chip 401, control chip 402 and cascade transmission line of control chip 403 usefulness that will cascade be cascaded.Comprise three LED control chips, promptly described control chip 401, control chip 402 and control chip 403 in the LED lamp decoration of the present invention system.The control unit of described lamp decoration system is with control signal, and promptly cascade signal at first is transferred to described control chip 401.Described control chip 401 receives described cascade signal, at first described cascade signal is decoded; Then decoded signal clk, data, load, oe are sent to connected chip for driving 404; If described chip for driving 404 also is connected with chip for driving, can further signal clk, data, load, oe be sent to the chip for driving that is being connected with described chip for driving 404; At last, each chip for driving converts signal clk, data, load, oe to red, green and blue tri coloured lantern needed control signal, and sends to LED the LED lamp is lighted.Described control chip 401 sends to decoded signal recompile the described control chip 402 of connection when chip for driving 404 sends decoded signal.Described control chip 402 when realization is transferred to chip for driving 405 with signal, is transferred to described control chip 403 with described control chip 401 identical signal processing methods with cascade signal according to identical method.Described control chip 403 is transferred to chip for driving 406 with described control chip 401 identical signal processing methods with signal, and the LED lamp point that will be connected with described chip for driving 406 is lighted.The present invention specifically may further comprise the steps, as shown in Figure 5:
The control unit of step 501, lamp decoration system sends to control chip 401 with the cascade signal of single line transmission.
The control indicator light of step 505, described control chip brightens, and represents that mistake appears in this control chip, and the single line transmission course of cascade signal of the present invention finishes.Whether described frequency signal effectively deterministic process, is convenient to determine the chip that breaks down.
The required data of this control chip of intercepting in step 508, the parallel data behind described protocol-decoding.
Described control chip 402 transmits described cascade signal according to step 502 to 511 method.
Described control chip 403 is handled described cascade signal according to step 502 to 511 method.
The single line transmission method of cascade signal of the present invention, the quantity of its cascade control chip is unrestricted, owing to adopt single cascade transmission line cascade signal, transmitting a plurality of signals simultaneously with prior art compares, at first, needn't consider the sequential matching relationship of a plurality of signals, make the cascade signal transmission course more succinct, the failure rate of transmission reduces, stable row improves; Secondly, transmission method of the present invention is not high to the logical design of transmission system, has reduced the cost from design; At last, the present invention has reduced the use amount of cable with single cascade transmission line cascade signal, has saved cost.
Should be understood that above-mentioned statement at preferred embodiment of the present invention is comparatively detailed, can not therefore think the restriction to scope of patent protection of the present invention, scope of patent protection of the present invention should be as the criterion with claims.
Claims (9)
1, a kind of single line transmission method of led chip cascade signal may further comprise the steps:
A, a plurality of led chips that will cascade are connected with single cascade transmission line;
B, will send to the cascade signal of described led chip, be transferred to the led chip of described a plurality of cascades by single cascade transmission line successively.
2, method according to claim 1, described step B specifically may further comprise the steps:
B1, described cascade signal send to a led chip of described single cascade transmission line termination;
B2, described led chip send to continuous led chip with described cascade signal successively by described single cascade transmission line.
3, method according to claim 2 is characterized in that, among the described step B2, the described led chip of stating sends described cascade signal process, specifically may further comprise the steps,
B21, described cascade signal is decoded;
B22, in decoded cascade signal, intercept part signal, and send to the LED that is connected with described led chip;
B23, the coding of the decoded signal after will intercepting, and send to the led chip that is connected with this led chip.
4, method according to claim 3 is characterized in that, described step B21 specifically comprises the extraction to frequency signal, data-signal and synchronizing signal.
5, method according to claim 4 is characterized in that, described step B21 also comprises the validity of frequency signal is confirmed.
6, method according to claim 4 is characterized in that, described step B21 also comprises described data-signal is carried out protocol-decoding.
7, method according to claim 6 is characterized in that, among the described step B22, the signal of described intercepting is the part of data-signal.
8, method according to claim 7 is characterized in that, among the described step B22, also comprises the data-signal of described intercepting is stored.
9, method according to claim 8 is characterized in that, among the described step B22, comprises that also the signal with intercepting sends to the chip for driving that is connected with described led chip, is sent to the LED of connection by described chip for driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101169261A CN101365274A (en) | 2008-07-21 | 2008-07-21 | Single line transmission method for LED chip cascade signal |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101169261A CN101365274A (en) | 2008-07-21 | 2008-07-21 | Single line transmission method for LED chip cascade signal |
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| CN101365274A true CN101365274A (en) | 2009-02-11 |
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| CNA2008101169261A Pending CN101365274A (en) | 2008-07-21 | 2008-07-21 | Single line transmission method for LED chip cascade signal |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129838A (en) * | 2011-04-28 | 2011-07-20 | 深圳市天微电子有限公司 | LED (Light-Emitting Diode) display data processing method and device |
| CN101707042B (en) * | 2009-07-20 | 2012-09-26 | 深圳市天微电子有限公司 | Coding and data storing, regenerating and forwarding technology used for single-wire cascade data communication |
| CN103516479A (en) * | 2012-06-29 | 2014-01-15 | 聚积科技股份有限公司 | Single-wire signal regeneration transmission device and method and serial device thereof |
| CN104066255A (en) * | 2014-07-08 | 2014-09-24 | 深圳市磊芯半导体有限公司 | LED driving circuit and transmitting method thereof |
| CN105101521A (en) * | 2014-05-20 | 2015-11-25 | 名科半导体股份有限公司 | Light emitting diode circuit and driving method thereof |
| CN110995537A (en) * | 2019-12-02 | 2020-04-10 | 重庆矢崎仪表有限公司 | Multi-chip closed-loop communication delay calculation method, communication synchronization method and communication system |
| US20220039231A1 (en) * | 2020-07-29 | 2022-02-03 | Novatek Microelectronics Corp. | Light-emitting diode driver and light-emitting diode driving device |
| US11341904B2 (en) | 2019-08-13 | 2022-05-24 | Novatek Microelectronics Corp. | Light-emitting diode driving apparatus and light-emitting diode driver |
| CN115798398A (en) * | 2022-01-04 | 2023-03-14 | 北京集创北方科技股份有限公司 | Display driving system and display panel |
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2008
- 2008-07-21 CN CNA2008101169261A patent/CN101365274A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707042B (en) * | 2009-07-20 | 2012-09-26 | 深圳市天微电子有限公司 | Coding and data storing, regenerating and forwarding technology used for single-wire cascade data communication |
| CN102129838A (en) * | 2011-04-28 | 2011-07-20 | 深圳市天微电子有限公司 | LED (Light-Emitting Diode) display data processing method and device |
| CN103516479A (en) * | 2012-06-29 | 2014-01-15 | 聚积科技股份有限公司 | Single-wire signal regeneration transmission device and method and serial device thereof |
| CN103516479B (en) * | 2012-06-29 | 2016-08-03 | 聚积科技股份有限公司 | Single-wire signal regeneration transmission device and method and serial device thereof |
| CN105101521A (en) * | 2014-05-20 | 2015-11-25 | 名科半导体股份有限公司 | Light emitting diode circuit and driving method thereof |
| CN105101521B (en) * | 2014-05-20 | 2018-08-21 | 名科半导体股份有限公司 | Light emitting diode circuit and driving method thereof |
| CN104066255A (en) * | 2014-07-08 | 2014-09-24 | 深圳市磊芯半导体有限公司 | LED driving circuit and transmitting method thereof |
| CN104066255B (en) * | 2014-07-08 | 2016-06-22 | 深圳市磊芯半导体有限公司 | A kind of LED drive circuit and transmission method thereof |
| US11341904B2 (en) | 2019-08-13 | 2022-05-24 | Novatek Microelectronics Corp. | Light-emitting diode driving apparatus and light-emitting diode driver |
| CN110995537A (en) * | 2019-12-02 | 2020-04-10 | 重庆矢崎仪表有限公司 | Multi-chip closed-loop communication delay calculation method, communication synchronization method and communication system |
| CN110995537B (en) * | 2019-12-02 | 2023-02-03 | 重庆矢崎仪表有限公司 | Multi-chip closed-loop communication delay calculation method, communication synchronization method and communication system |
| CN114067725A (en) * | 2020-07-29 | 2022-02-18 | 联咏科技股份有限公司 | Light emitting diode driver and light emitting diode driving apparatus |
| US20220039231A1 (en) * | 2020-07-29 | 2022-02-03 | Novatek Microelectronics Corp. | Light-emitting diode driver and light-emitting diode driving device |
| TWI810620B (en) * | 2020-07-29 | 2023-08-01 | 聯詠科技股份有限公司 | Light-emitting diode driver and light-emitting diode driving device |
| US11974371B2 (en) * | 2020-07-29 | 2024-04-30 | Novatek Microelectronics Corp. | Light-emitting diode driver and light-emitting diode driving device |
| CN115798398A (en) * | 2022-01-04 | 2023-03-14 | 北京集创北方科技股份有限公司 | Display driving system and display panel |
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Open date: 20090211 |