CN2562503Y - Pluse code modulation and carrier oscillator - Google Patents
Pluse code modulation and carrier oscillator Download PDFInfo
- Publication number
- CN2562503Y CN2562503Y CN 01216728 CN01216728U CN2562503Y CN 2562503 Y CN2562503 Y CN 2562503Y CN 01216728 CN01216728 CN 01216728 CN 01216728 U CN01216728 U CN 01216728U CN 2562503 Y CN2562503 Y CN 2562503Y
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- circuit
- modulation
- pulse
- output
- code modulation
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Abstract
The utility model discloses a new pulse code modulation (PCM) and carrier wave oscillation device constructed with general elements. The utility model can be accessed with the pulse code source of any coding schemes, and can modulate carrier wave oscillation frequency in certain ranger and output the modulated carrier wave code signal (PCM signal). The outputted signal can be connected to infrared or radio frequency coding and transmission device for coding and transmission.
Description
The vibration that the utility model relates to pulse code modulation and pulse code modulation carrier wave generates.
Pulse modulation technique has obtained using widely in daily life.All adopt the pulse code modulation technology as various electric appliance remote controllers, with the operational transformation of each button on the remote controller is the signal of telecommunication that is modulated at different pulse code modulated on its carrier frequency, again through the dispensing device of infrared light, deliver to the infrared receiving device of electrical equipment, by the recognition device in the electrical equipment the pairing various pulse codes of each button operation are carried out identification decision again, and then realize various operation controls this electrical equipment.
In the application of pulse-code modulation mostly, dedicated IC chip is selected in coding, carrier oscillation and modulation for use, this provides convenience for the formation of hardware circuit, but also cause application circuit designer can't construct encoding scheme according to the wish of oneself, select carrier oscillation frequency etc., and the chip that each producer that produces dedicated IC chip provides, its encoding scheme has nothing in common with each other, and also causes application circuit designer in the inconvenience of selecting on the chip.
The purpose of this utility model is at the deficiencies in the prior art, design a kind of new device, can insert the pulse code source of any encoding scheme, can be to carrier oscillation frequency realization adjustment within the specific limits, and the carrier wave code signal after the output modulation, be PCM signaling, the coding dispensing device that the signal of output can be connected to infrared or the RF-wise transmission of encoding.
The utility model adopts universal elements to construct a kind of novel pulse-code modulation and carrier oscillation device.
The device that the utility model relates to is seen Fig. 1 with the annexation of sign indicating number source apparatus and dispensing device.
Referring to Fig. 1.The sign indicating number source output terminal of sign indicating number source apparatus 1 is connected to the coding input of pulse-code modulation and carrier oscillation device 2, and the pulse-code modulation output of pulse-code modulation and carrier oscillation device 2 is connected to coding dispensing device 3.
Pulse-code modulation that the utility model relates to and carrier oscillation device 2 are made of oscillating circuit 21, modulation circuit 22 and output circuit 23.The output of oscillating circuit 21 is connected to the input of modulation circuit 22, and the output of modulation circuit 22 is connected to the input of output circuit 23.
After pulse-code modulation and carrier oscillation device 2 power up, oscillating circuit 21 just the outgoing carrier signal to modulation circuit 22, modulation circuit 22 is according to the pulse code signal from sign indicating number source apparatus 1 that inserts, the carrier signal of coming self-oscillating circuit 21 that inserts is modulated, export the signal of finishing pulse-code modulation to output circuit 23, by output circuit 23 PCM signaling is delivered to dispensing device 3, finish transmission PCM signaling by dispensing device 3.
The frequency of the carrier signal that the oscillating circuit 21 of pulse-code modulation and carrier oscillation device 2 is produced, can select and the corresponding to frequency of carrier wave that has infrared or radio frequency receiving demodulation device now, just can adopt existing receiving demodulation device, realize the demodulation of PCM signaling, make the circuit reduction of receiving demodulation device.
Description by the following examples further specifies thought of the present utility model.
Fig. 1 is the utility model device and the connection diagram of a sign indicating number source apparatus, dispensing device;
Fig. 2 is the circuit diagram that embodiment adopted.
Referring to Fig. 2.NAND gate G21, G22 and capacitor C 21, resistance R 21, R22 constitute the carrier oscillation circuit, and capacitor C 22 can guarantee that oscillating circuit works better; The output of NAND gate G21 is connected on the input as the NAND gate G23 of modulation circuit, the carrier signal that oscillating circuit produces is sent into modulation circuit, at this moment, if another input of NAND gate G23 is connected to the pulse code signal from sign indicating number source apparatus 1, then pulse code signal just as the gate-control signal of NAND gate G23, is modulated carrier signal; The output of modulation circuit NAND gate G23 is connected to the input of NAND gate G24, and the signal that will be finished pulse-code modulation by the NAND gate G24 as output circuit exports dispensing device 3 to.
The carrier frequency of oscillating circuit depends on resistance R 21 and capacitor C 21.
Claims (2)
1, a kind of pulse-code modulation and carrier oscillation device thereof is characterized in that it is made of oscillating circuit, modulation circuit and output circuit, and the output of oscillating circuit is connected to the input of modulation circuit, and the output of modulation circuit is connected to the input of output circuit;
Oscillating circuit is made of NAND gate G21, G22 and capacitor C 21, resistance R 21, R22, and capacitor C 22 can guarantee that oscillating circuit works better;
Modulation circuit is made of NAND gate G21, and the output of NAND gate G21 is connected on the input as the NAND gate G23 of modulation circuit;
Output circuit is made of NAND gate G24, and its signal of finishing pulse-code modulation exports dispensing device to.
2, a kind of pulse-code modulation according to claim 1 and carrier oscillation device thereof, it is characterized in that the coding input of pulse-code modulation and carrier oscillation device can insert the pulse code source of any encoding scheme, the output signal of pulse modulation and carrier oscillation device can be connected to the coding dispensing device of infrared or RF-wise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01216728 CN2562503Y (en) | 2001-02-28 | 2001-02-28 | Pluse code modulation and carrier oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01216728 CN2562503Y (en) | 2001-02-28 | 2001-02-28 | Pluse code modulation and carrier oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2562503Y true CN2562503Y (en) | 2003-07-23 |
Family
ID=33635093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01216728 Expired - Fee Related CN2562503Y (en) | 2001-02-28 | 2001-02-28 | Pluse code modulation and carrier oscillator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2562503Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679605A (en) * | 2020-06-09 | 2020-09-18 | 四川虹美智能科技有限公司 | Control method and system of intelligent household appliance and electronic remote controller |
-
2001
- 2001-02-28 CN CN 01216728 patent/CN2562503Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679605A (en) * | 2020-06-09 | 2020-09-18 | 四川虹美智能科技有限公司 | Control method and system of intelligent household appliance and electronic remote controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XIAMEN OVERSEAS CHINESE ELECTRONIC ENTERPRISE CO. Free format text: FORMER OWNER: HUAQIAO ELECTRONIC ENTERPRISE CO., LTD., XIAMEN Effective date: 20070316 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070316 Address after: 361006, Huang Hongtao, 22 Huli Avenue, Fujian, Xiamen Patentee after: Xiamen Overseas Chinese Electronic Co., Ltd. Address before: 361006, Huang Hongtao, 22 Huli Avenue, Fujian, Xiamen Patentee before: Xiamen Huaqiao Electronic Enterprise Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030723 |