CN100359933C - Wireless high-resolution digit sound television system - Google Patents
Wireless high-resolution digit sound television system Download PDFInfo
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- CN100359933C CN100359933C CNB2003101160936A CN200310116093A CN100359933C CN 100359933 C CN100359933 C CN 100359933C CN B2003101160936 A CNB2003101160936 A CN B2003101160936A CN 200310116093 A CN200310116093 A CN 200310116093A CN 100359933 C CN100359933 C CN 100359933C
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Abstract
The present invention relates to a wireless high-definition digital acoustic TV system which belongs to the field of TV systems. The wireless high-definition digital acoustic TV system comprises a digital acoustic device and a TV transmitting device. The present invention is characterized in that a BC212015 chip of an encoding, modulating and transmitting module, the digital acoustic device and the TV transmission device are made into a whole; two post-positioned ring sound boxes with DACS4334 audio power amplifying chips TDA2616 are controlled by the BC212015 chip with a receiving module and a demodulating module. Wireless connection brings convenience for users. The present invention has the advantages of reliable and guaranteed audio quality, strong flexibility and good versatility, can be made into a single sound channel, can be made into stereo sound, and can also be made into a wireless earphone, and can be applied to LCDs, PDPs and high-definition CRT color TVs.
Description
Technical field
The invention belongs to the television system field, specially refer to a kind of high definition digital sound equipment television system of utilizing wireless transmission.
Background technology
The general situation of development of existing high-definition stereo TV and wireless technology shows, Smart Home has become a kind of trend, except existing cathode ray tube television receiver (CRT), also have LCD (LCD) and plasma scope (PDP) to add the High Resolution Display battle array, the intelligent residence that with the display terminal is core forms, the sound equipment TV that the Chinese TV industry has pushed away the several years makes that the combination of TV and sound equipment is more and more tightr, and wireless technology is the necessary means that intelligent residence is realized, this three's combination becomes inevitable development trend.
The feasibility of stereo set wireless penetration trend is tangible, in the prior art, two rearmounted surrounding sound speaker overwhelming majority of audio amplifier home theater are wired connections, for the rooms such as parlor that do not have pre-buried audio amplifier line in a large number, the line of a lot of users' home theater between from the main frame to the surrounding sound speaker destroyed the clean and tidy of room, and makes troubles.Considerable user spends many financial resource and material resource to bury or cover up the audio amplifier line in order not allow the surround speaker line destroy the clean and tidy of room.Some user is complete for the room, then simply gives up the configuration surrounding sound speaker, and like this, the acoustics of home theater is just poor a lot.If adopt Bluetooth technology in the wireless communication technology field to realize high-fidelity wireless connections between surround speaker and sound equipment (or TV) main frame, can guarantee that then home theater reduces good acoustics, can not destroy the beautiful and clean of subscriber household again.How is the present situation of wireless technology so? present family wireless network technology mainly contains three kinds of IEEE802.11, HomeRF and Bluetooth technologies.
1.IEEE802.11 standard, it is operated in 2.4GHz as the family wireless network standard, and direct sequence spread spectrum, maximum data transfer rate are 11Mb/s, need not straightline propagation.The scope of supporting be outdoor be 300 meters, the longest in working environment is 100 meters.
2.HomeRF standard, HomeRF is operated in 2.4GHz, utilize the frequency-hopping spectrum-expanding mode, between mobile device, realize communication by a main frame in the family, both can pass through the communication of " time division multiplexing " support voice, and can provide data communication services by carrier sense multiple access/collision avoidance protocol again.Simultaneously, HomeRF provides good integrated with TCP/IP, supports broadcasting, multicast and 48 IP addresses.The present message transmission rate of HomeRF is 2Mb/s.
3. bluetooth standard, bluetooth standard is a kind of radio individual internetworking standard, Bluetooth technology can be provided in the digital speech in the short distance and the transmission of data, can be supported in the application of the point-to-point or point-to-multipoint between mobile device and the desk device.Bluetooth transceiving on the 2.4GHzISM frequency band with 1,600 jumping/second frequency hopping, be centre frequency with 2.45GHz promptly, can obtain the channel of 79 1MHz bandwidth.
Adopt the advantage of Bluetooth technology to be: it has a whole set of brand-new agreement, can be applied to more conditions.Frequency hopping in the Bluetooth technology is faster, after receiving or sending a grouped data, promptly skips to another frequency, thereby more stable, and it also has characteristics such as low-power consumption, low cost and flexible safety simultaneously.In addition, the forward error correction technique that Bluetooth technology adopted has limited the unordered noise effect than long-distance link especially, and the coded system through optimizing can make Bluetooth technology be applied to various abominable wireless environments.Be mainly used in short-distance transmission data and voice, power consumption is very low.HomeRF is applied to communicating by letter between mobile data in the family and speech ciphering equipment and the main frame, and Bluetooth technology then is applied to any occasion that can replace cable with wireless mode.This has also just established the present invention with the cause of Bluetooth technology integrated application in WirelessHD digital sound television system, also is the basis of realizing modern intelligent residence equipment.
Summary of the invention
The technical issues that need to address of the present invention are, in prior art, the rearmounted surround sound sound equipment of television set sound system, the overwhelming majority is a wired connection, and this connection often destroys the integrality in residence, does not especially have the room of pre-buried audio amplifier line, destructiveness is bigger, in order to overcome this defective, just need that design is a kind of to be connected without feeder line, and adopt the mode of wireless transmission to realize high-fidelity wireless connections between surround speaker and sound equipment or television main.Before the narration scheme, earlier following parts are done one and roughly described, these several parts are:
1, the interface aspect, television set provides one by GND, 5V, audio, CONTRL, four needle interfaces (concrete definition can change), for transmitting terminal provides the operating voltage control signal and wants audio signals, wherein the CONTRL signal is used for coming switch Bluetooth transmission module by remote controller, makes the user selectivity carry out the switching of surround sound.
2 wireless headsets, be embedded in BC212015 module and D/A modular converter, outside line is carried out switching signal and is switched, as long as earphone is plugged, cut off the power supply of surround speaker, can realize " from listening " function. wherein the socket of earphone is as the operating switch of bluetooth and D/A modular converter, (this functional module can be accepted or rejected according to cost)
3, audio amplifier is these wireless connections surrounding sound speaker, active audio amplifier for band bluetooth receiver module, receive, demodulate the audio signal of left and right sides surround channel and it is carried out power amplification, the power signal of a sound channel directly drives inner loud speaker, the power signal of another sound channel is exported by output interface, receives an other passive surrounding sound speaker with the audio amplifier line.Because two surround speakers are in the back,, the audio amplifier line between two surrounding sound speakers can not destroy the clean and tidy of room substantially so connecting.
4, bluetooth transceiving chip BC212015 general introduction, second generation Bluetooth chip (BC212015) built-in power amplification module and antenna can realize that ultimate range is 100 meters radio communication.Adopt FHSS (Frequency Hopping Spread Spectrum/FHSS) technology, can be used for data encryption (Encryption), subscription authentication (Authentication), have powerful anti-interference and confidentiality.Support the SPI DLL (dynamic link library), flexible operation.Support the conventional computer interface: RS-232, USB, SPI, I2C.Support PCM CODEC interface, but transmission of speech signals.Message transmission rate can reach 723kbps.
For realizing purpose of the present invention, finish by the following technical solutions, a kind of WirelessHD digital sound television system comprises digital sound and system for TV set, it is characterized in that, coding, modulation, transmitter module BC212015 chip are connected to television equipment and digital sound; Remote controller with the BC212015 chip that has reception, demodulation module removes to control the DACS4334 chip with audio frequency D/A switch function, delivers to have audio power amplification pio chip TDA2616 again, after it, is connected to two rearmounted surrounding sound speakers.Described system can make monophony and also can make stereoly, also can receive with wireless headset; This system can be applied in LCD, and PDP above the high definition CRT colour TV, as long as do a bluetooth module interface in the above, connects the Bluetooth transmission module and just can serve as emission source.
Beneficial effect of the present invention is: (1) wireless connections are very easy to the user, and the user can not be used in and draw a long earphone cord between TV and the people, and the line between surround sound loudspeaker and the main loudspeaker can save; (2) audio quality is very reliable and guaranteed, and antijamming capability is strong, and evidence transmits signal reduction distortion with 2.4G and almost can not listen; (3) flexibility is strong, can do monophony also can do stereo, also can wireless headset, with cost control; (4) versatility is good, can be applied in LCD, and PDP above the high definition CRT colour TV, as long as do a bluetooth module interface in the above, connects the Bluetooth transmission module and just can serve as emission source.
Description of drawings
Fig. 1 is a WirelessHD digital sound television system connection diagram
Fig. 2 is IC chip radio frequency part interface circuit figure
Fig. 3 is IC chip and memory interface circuit figure
Fig. 4 is the main external interface circuit block diagram of IC chip
Fig. 5 is the power interface circuit block diagram
Embodiment
With reference to Fig. 1, choose following parameter in the present embodiment:
Working frequency range: 2.4GHz ISM band
Modulation system: GFSK
Receiving sensitivity :-80dBm
Transmitting power:＜20dBm (CLASS 1)
Ambient temperature :-20 ℃～+ 70 ℃;
Working power: 7.5V～8V;
Transmission range: 100 meters (spacious environment), television system can be television set or other among the figure
Display 1.1, its delivery outlet is connected to a transmitter module 1.2, it can be a block encoding, modulate emission module BC212015 chip, 2 be a total remote controller it comprise a receiving demodulation module 2.1 again, adopt BC21201 5 chips, former acoustic remote control device 2.2, its employing+D/ACS4334 chip, it can connect earphone 2.3, sound box system of 3 expressions among the figure, audio power amplifier section ICTDA2616 chip 3.1, a rearmounted surround speaker 3.2 and another rearmounted surround speaker 3.3. represent Bluetooth chip radio frequency part interface circuit figure with reference to Fig. 2, and Bluetooth chip BC212015 is 4 among the figure, the radio frequency part interface circuit that it connected is 4.1, the power circuit that they connect is 4.2, with reference to Fig. 3, and expression Bluetooth chip and memory interface circuit, the memory chip maximum storage is 8M, with reference to Fig. 4, the main external interface circuit block diagram of expression Bluetooth chip has been represented and memory, the annexation of digital processing unit and interface circuit, with reference to Fig. 5, expression power interface circuit block diagram.
Claims (3)
1. a WirelessHD digital sound television system comprises digital sound and system for TV set, it is characterized in that, coding, modulation, transmitter module BC212015 chip are connected to television equipment and digital sound; Remote controller with the BC212015 chip that has reception, demodulation module removes to control the DACS4334 chip with audio frequency D/A switch function, delivers to have audio power amplification pio chip TDA2616 again, after it, is connected to two rearmounted surrounding sound speakers.
2. WirelessHD digital sound television system according to claim 1 is characterized in that, described system makes monophony or makes stereoly, or receives with wireless headset.
3. WirelessHD digital sound television system according to claim 1 is characterized in that, this system applies is at LCD, and PDP during high definition CRT colour TV, needs only and does a bluetooth module interface in the above, and the bluetooth transmitter module just can serve as emission source work in the connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101160936A CN100359933C (en) | 2003-12-31 | 2003-12-31 | Wireless high-resolution digit sound television system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101160936A CN100359933C (en) | 2003-12-31 | 2003-12-31 | Wireless high-resolution digit sound television system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1592378A CN1592378A (en) | 2005-03-09 |
| CN100359933C true CN100359933C (en) | 2008-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101160936A Expired - Fee Related CN100359933C (en) | 2003-12-31 | 2003-12-31 | Wireless high-resolution digit sound television system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1953526B (en) * | 2005-10-21 | 2010-04-07 | 神基科技股份有限公司 | A display device and the AV playing system using the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102181A (en) * | 1986-04-01 | 1987-01-24 | 郑州大学 | Aural wireless transmitting unit specialized for television |
| CN1118126A (en) * | 1994-08-28 | 1996-03-06 | 詹庆轩 | Television sound accompaniment transmission technology |
| JPH09244668A (en) * | 1996-03-08 | 1997-09-19 | Chiyushikufueesa Fuootouueruchiyonjiya | Radio music accompaniment device |
| CN2492012Y (en) * | 2001-08-30 | 2002-05-15 | 江苏长虹电视机有限公司 | TV radio portable receiver |
-
2003
- 2003-12-31 CN CNB2003101160936A patent/CN100359933C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102181A (en) * | 1986-04-01 | 1987-01-24 | 郑州大学 | Aural wireless transmitting unit specialized for television |
| CN1118126A (en) * | 1994-08-28 | 1996-03-06 | 詹庆轩 | Television sound accompaniment transmission technology |
| JPH09244668A (en) * | 1996-03-08 | 1997-09-19 | Chiyushikufueesa Fuootouueruchiyonjiya | Radio music accompaniment device |
| CN2492012Y (en) * | 2001-08-30 | 2002-05-15 | 江苏长虹电视机有限公司 | TV radio portable receiver |
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| CN1592378A (en) | 2005-03-09 |
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Assignee: Boluo Konka Exactitude Science Technology Co., Ltd. Assignor: Konka Group Co., Ltd. Contract record no.: 2010440001125 Denomination of invention: Wireless high-resolution digit sound television system Granted publication date: 20080102 License type: Exclusive License Open date: 20050309 Record date: 20100812 |
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Granted publication date: 20080102 Termination date: 20131231 |