CN100435074C - Television infrared remote-receiver for notebook computer and receiving method - Google Patents
Television infrared remote-receiver for notebook computer and receiving method Download PDFInfo
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- CN100435074C CN100435074C CNB2005100724324A CN200510072432A CN100435074C CN 100435074 C CN100435074 C CN 100435074C CN B2005100724324 A CNB2005100724324 A CN B2005100724324A CN 200510072432 A CN200510072432 A CN 200510072432A CN 100435074 C CN100435074 C CN 100435074C
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Abstract
The present invention discloses a remote-control receiving device of television infrared in a notebook computer and a receiving method, which comprises an infrared transmitting device and an embedded controller arranged in the notebook computer, wherein an infrared receiving port is connected to a signal-interruption connecting foot of the embedded controller. Infrared signals emitted by the infrared transmitting device can be received by the infrared receiving port, and an interrupt signal is generated on the signal-interruption connecting foot. The embedded controller comprises an infrared decoding program and a sending program of scanning codes of an analogue key board, the infrared signals can be decoded and converted into the scanning codes which can be recognized by a medium playing software. The present invention can leave out a CIR (consumed infrared remote) chip used commonly to save costs; the infrared signals are decoded and sent by the inherent resource or the function of the embedded controller according to an infrared remote-controlling protocol, and the flexibility of system design is added.
Description
[technical field]
The present invention relates to a kind of device of infra-red remote control, refer in particular to a kind of receiving trap that is used for the television infrared remote of notebook computer; The invention still further relates to the method for reseptance of the television infrared remote in a kind of notebook computer.
[technical background]
Nowadays, see TV with notebook computer, with TV, computer and enrich amusement function and melt for one, and can be under the excellent direct imprinting of fragment in the process of watching TV and film.Therefore, seeing TV with notebook computer, is that of consumption notebook computer electrification of domestic preferably proves.See TV with notebook computer, earlier will be in notebook computer the parts such as television reception change-over circuit of integrated necessity, by dedicated remote control, just can control computer again, realization multimedia recreation function by the mode and the unique interface of remote control.
Now, much have the TV remote control and watch in the notebook computer design of function,, generally adopt a special infra-red remote control decoding chip to carry out the reception and the decoding of telepilot infrared signal at the notebook host end.Give upper strata operating system decoded data transfer then, adopt driver, use driver to control corresponding TV playout software, realize on the notebook computer of band TV Card that remote control sees the function of TV thereby be implemented at this decoding chip.In the present design, generally adopt LPC (low pincount) bus, or CIR (consumed infraredremote) chip of USB (universal system bus) bus.Increase a special decoding chip like this, increased the cost of total system design; But also to lean on chip to cooperate with respective drive program under the operating system, dirigibility neither be fine.
[summary of the invention]
The technical matters that institute of the present invention desire solves provides a kind of intrinsic resource of embedded controller of utilizing and carries out the decoding of infrared signal, television infrared remote-receiver and method of reseptance in the notebook computer of saving cost, flexible design.
The technical solution adopted in the present invention is: television infrared remote-receiver in a kind of notebook computer, it comprises infrared transmitting device, be located at the embedded controller in the notebook computer, connect on the signal interruption pin of embedded controller and establish the infrared ray receiving port, but the infrared signal that infrared ray receiving port receiving infrared-ray emitter is launched, and on the signal interruption pin, produce look-at-me, include decoding infrared ray program and simulating keyboard scan code router in the embedded controller, can and convert the scan code that can supply media play software to discern to described infrared signal decoding.
Described decoding infrared ray program comprises the steps:
The string signal that infrared ray receiving port receiving infrared-ray emitter sends, and produce look-at-me to embedded controller;
Embedded controller startup internal counter is counted the interruption that produces, and calculates the time interval between adjacent interruption;
The value that goes out according to the counter meter, judge in the infrared coding specification protocol fixed state, and translate corresponding code value;
Preserve infrared transmitting device corresponding key I D in embedded controller.
Described simulating keyboard scan code router may further comprise the steps:
Simulating keyboard is pressed;
Send corresponding keyboard scancode to operating system;
Multimedia software is finished function corresponding according to the scanning code value.
A kind of technical scheme that the present invention also provides is: television infrared remote method of reseptance in a kind of notebook computer, and it may further comprise the steps:
The technique effect that the present invention reached is: the present invention directly receives the infrared signal receiving port of infrared transmitter on embedded controller (EC:Embedded controller) chip in the notebook computer, can save normally used CIR (consumed infrared remote) chip, save cost; The present invention is interrupted pin by means of the external signal of embedded controller, and intrinsic resource such as keyboard controller, carry out the decoding and the transmission of infrared signal according to the infrared coding specification protocol, increased the dirigibility of system design like this with the method for bottom software control.
[description of drawings]
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the user mode reference diagram that television reception utilizes infra-red remote control in the notebook computer of the present invention.
Fig. 2 is the circuit block diagram of television infrared remote-receiver in the notebook computer of the present invention.
Fig. 3 is a kind of coded format of the infrared transmitter of television infrared remote-receiver in the notebook computer of the present invention.
Fig. 4 is the coded format of the infrared transmitter of television infrared remote-receiver intercepts in the notebook computer of the present invention among Fig. 3 one section.
Fig. 5 is the code value view of television infrared remote-receiver in the notebook computer of the present invention.
Fig. 6 is the process flow diagram that television infrared remote receives implementation procedure in the notebook computer of the present invention.
[embodiment]
At first see also shown in Figure 1, television infrared reception utilizes the user mode reference diagram of infra-red remote control in the notebook computer of the present invention, its middle infrared (Mid-IR) receiving port 14 is located on the wherein sidewall of notebook computer 12, in order to receiving infrared-ray transmitter (being telepilot) 10 infrared signals that sent.
Below described, also be advantage of the present invention place.As everyone knows, embedded controller (EC:Embedded controller), it is the chip of a notebook computer special use, the chip internal of embedded controller, the basic function that comprises some common single-chip microcomputers, as the PIN pin of respective external signal interruption, chip internal has the program that cooperates notebook computer producer to design voluntarily.In whole notebook-computer system, he can finish systemic-functions such as the scanning of notebook computer built-in keybad, touch pad control, can also the compounding practice system with mainboard on other key components and partss combine all functions such as finishing power management.Some function is exactly the function of keyboard controller, the decoding of control notebook built-in keybad and the transmission of scanning code value.
The present invention is by means of these intrinsic resources of the embedded controller 16 in the notebook computer 12 or the systemic-function that has, as shown in Figure 2, and the circuit block diagram of television infrared remote-receiver in the notebook computer 12 of the present invention.A corresponding external signal that the infrared ray receiving port 14 of the infrared signal of sending in order to receiving infrared-ray transmitter 10 is connected to embedded controller 16 is interrupted on the pin 18.The present invention writes corresponding software in embedded controller 16: infrared decoding program, simulating keyboard scan code router, according to the remote control agreement of infrared coding standard, the infrared signal that infrared receiving port 14 receives is decoded.By embedded controller 16 chips of notebook computer, can realize the decoding of infrared signal fully like this, and convert the scan code that upper strata media play software can be discerned to.
Software control in the embedded controller 16 mainly comprises two parts: one, and the decoding of infrared signal; Two, the transmission of simulating keyboard scan code.Below to the realization of each module do respectively with the explanation:
One, the decoding program of infrared signal promptly utilizes the soft decoding of the software realization infrared signal in the EC chip, also is the core that the present invention designs.
After a key of infrared ray transmitter 10 is pressed, its coded format with itself is launched the coding infrared signal, the infrared port 14 that is connected on the embedded controller 16 can receive a string signal, a string coded signal as shown in Figure 4, signal interruption pin 18 can produce an interruption at once and give embedded controller 16.After each interrupted producing, embedded controller 16 can start an inner counter to be counted, and by calculating the time interval of adjacent two interruptions, according to this time value, judges " 0 " or the one state that define in the infrared coding specification protocol like this.Thereby translate the code value that this button produces.
For example, as shown in Figure 5: between two interruptions interval greater than 1.6ms, think one state; The time interval between two interruptions less than 1.6ms, think " 0 " state; Interval greater than 12.6ms and less than the head sign indicating number thought of 14ms; Less than 800 μ s or be invalid code greater than 2.6ms.
Decode behind these signals, the ID value of infrared transmitter 16 respective keys is kept in the ram space of embedded controller 16.Whether can this value of inquiry change in the program, if change, expression has the button of new infrared transmitter 16 to press, and carries out the transmission of simulating keyboard sign indicating number.
Two, the router of simulating keyboard sign indicating number is realized control to media play software by the button of simulating keyboard.This part is by the function of keyboard controller part in the embedded controller 16: according to the function of pressing key definition on the infrared transmitter 10, embedded controller 16 inside are by the state of pressing and rebound of process simulation keyboard, and send corresponding keyboard scancode to operating system, playout software can define according to the shortcut of self and carry out function corresponding, for example, begin, suspend, search functions such as platform.
Below in conjunction with Fig. 6, the process flow diagram that whole procedure of the present invention is handled is described.
Claims (6)
1. television infrared remote-receiver in the notebook computer, it comprises infrared transmitting device, be located at the embedded controller in the notebook computer, it is characterized in that: connect on the signal interruption pin of embedded controller and establish the infrared ray receiving port, but the infrared signal that infrared ray receiving port receiving infrared-ray emitter is launched, and on the signal interruption pin, produce look-at-me, include decoding infrared ray program and simulating keyboard scan code router in the embedded controller, can and convert the scan code that media play software can be discerned to described infrared signal decoding.
2. television infrared remote-receiver in the notebook computer as claimed in claim 1 is characterized in that: the coded format of described infrared transmitting device is the NEC pattern.
3. television infrared remote-receiver in the notebook computer as claimed in claim 1 is characterized in that: described embedded controller adopts the infrared coding specification protocol when the decoding infrared signal.
4. television infrared remote-receiver in the notebook computer as claimed in claim 1 is characterized in that: described decoding infrared ray program comprises the steps:
The string signal that infrared ray receiving port receiving infrared-ray emitter sends, and produce look-at-me to embedded controller;
Embedded controller startup internal counter is counted the interruption that produces, and calculates the time interval between adjacent interruption;
The value that goes out according to the counter meter, judge in the infrared coding specification protocol fixed state, and translate corresponding code value;
Preserve infrared transmitting device corresponding key ID in embedded controller.
5. television infrared remote-receiver in the notebook computer as claimed in claim 1 is characterized in that: described simulating keyboard scan code router may further comprise the steps:
Simulating keyboard is pressed;
Send corresponding keyboard scancode to operating system;
Multimedia software is finished function corresponding according to the scanning code value.
6. television infrared remote method of reseptance in the notebook computer, it is characterized in that: it may further comprise the steps:
Step 1 is pressed a button of infrared transmitter, and infrared transmitter is launched infrared signal;
Step 2, the infrared ray receiving port that is connected on the signal interruption pin of embedded controller receives infrared signal, and produces infrared look-at-me;
Step 3, embedded controller starts internal counter, and counter calculates the quantity of interruption and the time interval between adjacent interruption;
Step 4 according to the infrared coding specification protocol, is carried out the judgement of infrared coding validity;
Step 5, after the embedded controller decoding infrared signal, and the corresponding ID of acquisition infrared transmitter;
Step 6, simulating keyboard is pressed, and sends keyboard scancode to operating system;
Step 7, multimedia software is finished function corresponding according to the scanning code value, comprising: begin, suspend, search platform, channel selection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100724324A CN100435074C (en) | 2005-05-14 | 2005-05-14 | Television infrared remote-receiver for notebook computer and receiving method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100724324A CN100435074C (en) | 2005-05-14 | 2005-05-14 | Television infrared remote-receiver for notebook computer and receiving method |
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| Publication Number | Publication Date |
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| CN1862616A CN1862616A (en) | 2006-11-15 |
| CN100435074C true CN100435074C (en) | 2008-11-19 |
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| CNB2005100724324A Expired - Fee Related CN100435074C (en) | 2005-05-14 | 2005-05-14 | Television infrared remote-receiver for notebook computer and receiving method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010015978A2 (en) * | 2008-08-06 | 2010-02-11 | Nxp B.V. | System, carrier, program and controllable device |
| CN102201159B (en) * | 2011-05-24 | 2013-06-19 | 四川九洲电器集团有限责任公司 | Infrared remote control residual code based method for realizing standby awakening |
| CN103729998A (en) * | 2013-12-09 | 2014-04-16 | 乐视致新电子科技（天津）有限公司 | Decoding method and device |
| CN103648044A (en) * | 2013-12-13 | 2014-03-19 | 乐视致新电子科技（天津）有限公司 | Method and device for starting applications |
| CN103970289B (en) * | 2014-05-28 | 2019-03-15 | 管存忠 | A method of emitting coding infrared ray with PC machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1118171A (en) * | 1997-06-20 | 1999-01-22 | Fujitsu Ltd | Radio communication converter |
| US20020044321A1 (en) * | 2000-10-17 | 2002-04-18 | Yu-Cheng Hua | Infrared radiation remote control system for a portable computer |
| US20020186203A1 (en) * | 2001-06-06 | 2002-12-12 | Yu-Fu Huang | Wireless remote control device for notebook computers |
| CN2529289Y (en) * | 2001-07-16 | 2003-01-01 | 大众电脑股份有限公司 | Radio remote-control device for notebook-type computer |
| US20030217205A1 (en) * | 2002-05-17 | 2003-11-20 | Chen Shoei Lay | Wireless portable electronic device capable of receiving |
-
2005
- 2005-05-14 CN CNB2005100724324A patent/CN100435074C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1118171A (en) * | 1997-06-20 | 1999-01-22 | Fujitsu Ltd | Radio communication converter |
| US20020044321A1 (en) * | 2000-10-17 | 2002-04-18 | Yu-Cheng Hua | Infrared radiation remote control system for a portable computer |
| US20020186203A1 (en) * | 2001-06-06 | 2002-12-12 | Yu-Fu Huang | Wireless remote control device for notebook computers |
| CN2529289Y (en) * | 2001-07-16 | 2003-01-01 | 大众电脑股份有限公司 | Radio remote-control device for notebook-type computer |
| US20030217205A1 (en) * | 2002-05-17 | 2003-11-20 | Chen Shoei Lay | Wireless portable electronic device capable of receiving |
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| CN1862616A (en) | 2006-11-15 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Dinghai Electron Co., Ltd. Assignor: Shenzhen Dingxing Digital Network Technology Co., Ltd. Contract fulfillment period: 2009.11.6 to 2019.11.5 contract change Contract record no.: 2010440000129 Denomination of invention: Television infrared remote-receiver for notebook computer and receiving method Granted publication date: 20081119 License type: Exclusive license Record date: 2010.1.18 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.11.6 TO 2019.11.5; CHANGE OF CONTRACT Name of requester: SHENZHEN DINGHAI ELECTRONICS CO., LTD. Effective date: 20100118 |
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Granted publication date: 20081119 Termination date: 20140514 |