CN201156734Y - Infrared system and earphone having compressed transmission and receiving extension function - Google Patents
Infrared system and earphone having compressed transmission and receiving extension function Download PDFInfo
- Publication number
- CN201156734Y CN201156734Y CNU2008200915551U CN200820091555U CN201156734Y CN 201156734 Y CN201156734 Y CN 201156734Y CN U2008200915551 U CNU2008200915551 U CN U2008200915551U CN 200820091555 U CN200820091555 U CN 200820091555U CN 201156734 Y CN201156734 Y CN 201156734Y
- Authority
- CN
- China
- Prior art keywords
- module
- infrared
- signal
- earphone
- power supply
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Optical Communication System (AREA)
- Headphones And Earphones (AREA)
Abstract
The utility model relates to infrared system and headphones which have the compressing, emitting, expanding and receiving functions. The headsets comprise an audio infrared transmitting unit and a signal receiving unit; the audio infrared transmitting unit is provided with a power supply, a power supply circuit, a signal input module, a signal compressing module, a signal modulating module and an infrared emitting tube, which are connected with each other; the signal receiving unit is provided with a power supply, a power supply circuit, an infrared receiving module, a signal demodulating module, an expanding module, a power amplification module and a loudspeaker, which are connected with each other; the signal compressing module is used for compressing the audio signals which are modulated and emitted from the infrared emitting unit; the expanding module decompresses the audio signals received and demodulated by the signal receiving unit; the infrared system and headphones with the compressing, emitting, expanding and receiving functions prevents the parasitized modulated signals from being introduced as a results of direct modulation and transmission. Therefore, the infrared system and headphones guarantees the quality of the audio signals and reduces the noise caused by the interference of other electromagnetic waves to the transmitted signals.
Description
Technical field
The utility model relates to the wireless communication technique field, refers to a kind of preceding compression of transmitting terminal signal modulate emission of having adopted especially, the infrared system and the earphone of tool compressed transmissions of expanding behind the receiving terminal rectification and reception expanded function.
Background technology
Current Infrared earphone, no matter be family expenses, vehicle-mounted, aviation, the audition chamber, or boats and ships, hospital, and other can use the place of Infrared earphone, in the infrared communication system that is adopted, audio signal often all is that directly the modulation back sends at transmitting terminal, receiving terminal receives the back rectification and plays, because audio signal can add in the process of modulating and other irrelevant parasitic modulation signals of audio signal, add the electromagnetic wave that often has other in the periphery electromagnetic environment, cause the infrared ray audio signal in communication process, to be easy to by stray electrical magnetic wave electromagnetic wave institute " pollution ", therefore often cause the audio signal that receives after termination is modulated pure inadequately, signal to noise ratio is not high enough, thereby cause the decline of audio signal quality, reduce the quality of the audio frequency of infrared transmission, even can have influence on the stability and the reliability of infrared communication.
The utility model content
The utility model is for overcoming above-mentioned defective, provide a kind of after transmitting terminal is with audio signal compression modulation transmissions, the tool compressed transmissions that decompresses behind the receiving terminal rectification and receive the infrared system and the earphone of expanded function.
For realizing above technical purpose, the infrared system and the earphone of tool compressed transmissions of the present utility model and reception expanded function adopt following technical scheme to realize, the infrared system and the earphone of this tool compressed transmissions and reception expanded function, cooperate existing infrared-ray communication system to use, the infrared system and the earphone of this tool compressed transmissions and reception expanded function comprise audio frequency infrared ray transmitting element and signal receiving unit, audio frequency infrared ray transmitting element has interconnective power supply, power supply circuits, signal input module, the Signal Compression module, signal modulation module and infrared emission tube, signal receiving unit has interconnective power supply, power supply circuits, the infrared ray receiver module, the signal demodulation module, expansion module, power amplifier module and loud speaker, the Signal Compression module is compressed processing to the audio signal of infrared ray transmitting element modulate emission, and expansion module carries out decompression to signal receiving unit to the audio signal after receiving and modulating.
In concrete enforcement, above-mentioned audio compression and expansion module are realized by discrete component circuit or chip with audio compression and expanded function.
All elements of this audio frequency infrared ray transmitting element promptly can be arranged on separately in the independent transmitting element shell, independently finish the function of the infrared transmitting element of this audio frequency, also can with the integrated setting of other multimedia equipment, other multimedia equipment has the audio signal output circuit and is connected with the audio signal input unit of this drink infrared ray transmitting element.
In addition, the infrared system of this tool compressed transmissions and reception expanded function and earphone are to earphone is similar usually, has the infrared ray receive window, infrared ray receiving lines, demodulation circuit, battery compartment, power supply and switching circuit, power amplification circuit, volume control unit, squelch circuit, delay switching-off power-saving circuit and loud speaker.
Beneficial effect: the infrared system and the earphone of tool compressed transmissions of the present utility model and reception expanded function, owing in the audio frequency infra-red ray transmitting unit of existing communication system, increased the Signal Compression module, in signal receiving unit, increased expansion module, the audio signal of infrared is carried out modulating transmission again after prior compression is handled, after the receiving terminal demodulation, reduce audio signal with expanded circuit, introduce a large amount of family planning modulation signals thereby effectively avoided direct modulation to send, thereby guaranteed the high tone quality effect of audio signal, and reduced the interfering noise that caused by other electromagnetism noise jamming.
Relevant detailed content of the present utility model and technology are described as follows with regard to conjunction with figs. now.
Description of drawings
Fig. 1, be the theory diagram of audio frequency infra-red ray transmitting unit and audio frequency infrared ray receiving element signal processing;
The schematic block circuit diagram of Fig. 2, the utility model compressed transmissions module;
The schematic block circuit diagram of Fig. 3, the utility model expansion module;
The schematic diagram that Fig. 4, the utility model adopt the circuit of chip to connect.
Embodiment
The infrared system and the earphone of the utility model tool compressed transmissions and reception expanded function, be in order to reduce the noise of existing infrared-ray communication system, in the audio frequency infrared ray transmitting element and audio frequency infrared ray receiving element of existing infrared-ray communication system, increase Signal Compression module and expansion module respectively, the Signal Compression module is connected with the modulation of infrared rays circuit with signal input module, expansion module is connected with power amplifier with the audio frequency demodulation circuit, thereby reduce the noise that audio signal modulated process and transmission course increase, improve the quality of infrared communication.
Please refer to shown in Figure 1, be the utility model tool compressed transmissions and the infrared system of reception expanded function and the schematic block circuit diagram of earphone, for realizing above-mentioned purpose, the infrared system and the earphone of the tool compressed transmissions of this embodiment and reception expanded function, cooperate existing infrared-ray communication system to use, the infrared system and the earphone of this tool compressed transmissions and reception expanded function comprise audio frequency infrared ray transmitting element 3 and signal receiving unit 4, audio frequency infrared ray transmitting element 3 has interconnective power supply, power supply circuits, signal input module 31, Signal Compression module 32, signal modulation module 33 and infrared emission tube 34, signal receiving unit 4 has interconnective power supply, power supply circuits, infrared ray receiver module 40, signal demodulation module 41, expansion module 42, power amplifier module 43 and loud speaker 45, the audio signal of 32 pairs of infrared ray transmitting elements of Signal Compression module modulate emission is compressed processing, and the audio signal after 4 pairs of 42 pairs of signal receiving units of expansion module receive and modulate is carried out decompression.
In concrete enforcement of the present utility model, above-mentioned audio compression and expansion module 42 are by having the discrete component circuit of audio compression and expanded function, or the chip with identical function is realized, thereby improve the quality and the production efficiency of product, reduction in the numbers of seconds reduces cost effectively.
All elements of this audio frequency infrared ray transmitting element 3 promptly can be arranged on separately in the independent transmitting element shell, independently finish the function of the infrared transmitting element of this audio frequency, also can with the integrated setting of other multimedia equipment, other multimedia equipment has the audio signal output circuit and is connected with the audio signal input unit of this drink infrared ray transmitting element.
In addition, the infrared system of this tool compressed transmissions and reception expanded function and earphone are to earphone is similar usually, has the infrared ray receive window, infrared ray receiving lines, demodulation circuit, battery compartment, power supply and switching circuit, power amplification circuit, volume control unit, squelch circuit, delay switching-off power-saving circuit and loud speaker 45.
Please refer to Fig. 2 and shown in Figure 3, simplified electrical circuit diagram for the utility model compression module and expansion module 4242, in the use of reality, compression module and expansion module 4242 adopt standard compression and extended chip as shown in Figure 4, and the integrated level of increase system also reduces cost.
Claims (5)
1, the infrared system and the earphone of a kind of tool compressed transmissions and reception expanded function, it is characterized in that, the infrared system and the earphone of this tool compressed transmissions and reception expanded function comprise audio frequency infrared ray transmitting element and signal receiving unit, audio frequency infrared ray transmitting element has interconnective power supply, power supply circuits, signal input module, the Signal Compression module, signal modulation module and infrared emission tube, signal receiving unit has interconnective power supply, power supply circuits, the infrared ray receiver module, the signal demodulation module, expansion module, power amplifier module and loud speaker, the Signal Compression module is compressed processing to the audio signal of infrared ray transmitting element modulate emission, and expansion module carries out decompression to signal receiving unit to the audio signal after receiving and modulating.
2, the infrared system and the earphone of tool compressed transmissions according to claim 1 and reception expanded function is characterized in that, described audio compression and expansion module are realized by discrete component circuit or chip with audio compression and expanded function.
3, the infrared system and the earphone of tool compressed transmissions according to claim 1 and reception expanded function is characterized in that described audio frequency infrared ray transmitting element is arranged on separately in the independent device.
4, the infrared system and the earphone of tool compressed transmissions according to claim 1 and reception expanded function, it is characterized in that, described audio frequency infrared ray transmitting element and the integrated setting of other multimedia equipment, other multimedia equipment have the audio signal output circuit and are connected with the audio signal input unit of this drink infrared ray transmitting element.
5, the infrared system and the earphone of tool compressed transmissions according to claim 1 and reception expanded function, it is characterized in that, the infrared system and the earphone of described tool compressed transmissions and reception expanded function have the infrared ray receive window, infrared ray receiving lines, demodulation circuit, battery compartment, power supply and switching circuit, power amplification circuit, volume control unit, squelch circuit, delay switching-off power-saving circuit and loud speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200915551U CN201156734Y (en) | 2008-01-07 | 2008-01-07 | Infrared system and earphone having compressed transmission and receiving extension function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200915551U CN201156734Y (en) | 2008-01-07 | 2008-01-07 | Infrared system and earphone having compressed transmission and receiving extension function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201156734Y true CN201156734Y (en) | 2008-11-26 |
Family
ID=40104510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200915551U Expired - Fee Related CN201156734Y (en) | 2008-01-07 | 2008-01-07 | Infrared system and earphone having compressed transmission and receiving extension function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201156734Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769814B (en) * | 2008-12-05 | 2015-07-01 | 清华大学 | Sounding device |
| CN105812979A (en) * | 2016-04-21 | 2016-07-27 | 歌尔声学股份有限公司 | Earphone |
-
2008
- 2008-01-07 CN CNU2008200915551U patent/CN201156734Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769814B (en) * | 2008-12-05 | 2015-07-01 | 清华大学 | Sounding device |
| CN105812979A (en) * | 2016-04-21 | 2016-07-27 | 歌尔声学股份有限公司 | Earphone |
| CN105812979B (en) * | 2016-04-21 | 2018-12-14 | 歌尔股份有限公司 | A kind of earphone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102932704A (en) | Audio emission chip, audio receiving chip and wireless microphone system | |
| CN103731767B (en) | A kind of wireless microphone system and its method of work based on digital pilot frequency | |
| CN202998086U (en) | A multi-band double-reception band-crossing duplex relay vehicle station | |
| CN201156734Y (en) | Infrared system and earphone having compressed transmission and receiving extension function | |
| CN101807946A (en) | Operating method of 2.4 G wireless audio device | |
| US8442438B2 (en) | Wireless transmitter and related multimedia system | |
| CN204119575U (en) | There is LED light device and the sound box system of radio function | |
| CN202444603U (en) | 2.4G S/PDIF (Sony/Philips Digital Interface) wireless earphone device of set-top box | |
| CN201188660Y (en) | Television embedded with wireless sound transmitting device | |
| CN201222732Y (en) | Sound remote controller and audiovisual system matched with the same | |
| CN104639237A (en) | Infrared stereo receiving and transmitting device | |
| CN204425351U (en) | A kind of infrared stero set R-T unit | |
| CN221652590U (en) | Transmission control circuit of digital wireless receiving and transmitting system and wireless receiving and transmitting system | |
| CN201131007Y (en) | Television remote control as well as wireless reflector | |
| CN203015067U (en) | Audio transmitting chip, audio receiving chip, portable device, wireless communication system and wireless microphone system | |
| CN104581466A (en) | Wireless microphone system capable of automatically adjusting emission power | |
| CN213783586U (en) | Low-power-consumption fully-integrated UHF-band transmitting chip | |
| CN201156735Y (en) | Infrared vehicle mounted earphone | |
| CN220896811U (en) | Microphone switching system | |
| CN201025718Y (en) | A TV set with wireless audio radiation and receiving device | |
| CN101997625B (en) | Wireless signal transmitter and related multimedia system | |
| CN102064844B (en) | Wireless communication system | |
| CN203378040U (en) | High fidelity acoustic transmission sound box | |
| CN208806798U (en) | A kind of UHF waveband radio broadcasting device | |
| CN212572544U (en) | Intercom of making an uproar falls in AI intelligence |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081126 Termination date: 20110107 |