CN2676530Y - An apparatus for performing multiway switching and sound effect processing on multi-path audio signal - Google Patents
An apparatus for performing multiway switching and sound effect processing on multi-path audio signal Download PDFInfo
- Publication number
- CN2676530Y CN2676530Y CNU2003201047572U CN200320104757U CN2676530Y CN 2676530 Y CN2676530 Y CN 2676530Y CN U2003201047572 U CNU2003201047572 U CN U2003201047572U CN 200320104757 U CN200320104757 U CN 200320104757U CN 2676530 Y CN2676530 Y CN 2676530Y
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- China
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- audio
- terminal
- signal
- ta1218n
- video tape
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Abstract
The utility model discloses an apparatus for performing multi-way switching and sound effect processing on multi-path audio signal, aiming to solve the problem that the present single switching circuit and the single sound effect processing circuit can not realize the functions of stereophony decoding, sound effect processing, signal switching and double accompanying sound recording of the television with videocorder function and the television with videocorder and DVD playing functions. The technical project point is that the utility model is composed of an integrated circuit MSP3440G and TA1218N, an input-output terminal and an I<2>C main line connection terminal. Through the controlling of the I<2>C main line, the two integrated circuits cooperate with each other and work with each other. Thus the utility model realizes watching TV, using external device, videocorder broadcasting, recording TV broadcasting double accompanying sound SAP, DVD broadcasting, recording television signals and the switching of the audio signals and the stereophony decoding, sound effect processing in the television with videocorder function and videocorder function and DVD broadcasting function.
Description
Technical field
The utility model relate to a kind of the television set with video tape recorder function and have the video tape recorder function and the television set of DVD playing function in multipath audio signal is carried out the device that multidirectional switching and audio are handled.
Background technology
At present, the application-specific integrated circuit (ASIC) that the known multichannel voice frequency switching device shifter that uses in television set is generally selected for use is as required realized, surround sound, stereo processing also are to use special-purpose sound effect processing circuit, and the work between the two is independently not have association between mutually.But, this application apparatus the television set with video tape recorder function and have the video tape recorder function and the television set of DVD playing function in, just can't satisfy the needs that stereo decoding, audio are handled and two sound accompaniment recording function is realized.
Summary of the invention
Can not realize having the television set of video tape recorder function and have the video tape recorder function and the television set neutral body sound codec of DVD playing function, audio are handled and two sound accompaniment such as records at the difficulty of function in order to overcome existing independent frequency switch circuit and independent sound effect processing circuit, the utility model provides a kind of multipath audio signal is carried out audio processing and multidirectional device for switching, is used to solve the problems of the technologies described above.
The utility model is achieved by following technical proposals.
Television field frame intermediate-freuqncy signal SIF input 1 is connected to the ANA_IN+ pin of acoustic processing integrated circuit MSP3440G 2, the DACM_L of MSP3440G 2 and DACM_R pin are connected to L channel output 3 and R channel output 4, and these two outputs are connected to audio power amplifier; Signal switches 5 one groups of Lout2 of integrated circuit TA1218N, the Rout2 pin is connected to L channel output 6, the R channel output 7 that is used for video tape recorder assembly recording signal; Be used to accept the left and right sound channels audio signal input end 8,9 of video tape recorder assembly output, be used to accept the left and right sound channels audio signal input end 10,11 of external equipment output, be connected respectively to different Lin, the Rin pin of TA1218N 5; Audio signal between MSP3440G 2 and the TA1218N 5 connects like this, the SC1_OUT_L of MSP3440G 2, SC1_OUT_R output to LinTV, the RinTV of TA1218N 5, and the Lout1 of TA1218N 5, Rout1 output to SC1_IN_L, the SC1_IN_R of MSP3440G 2; In Lout1, the Rout1 of TA1218N 5 output, tell one the road and be connected to terminal 12,13, as audio output signal; Terminal 14 is connected to the I of MSP3440G 2 and TA1218N 5
2The C bus pin, control MSP3440G 2 and TA1218N 5 finish the I of various switch switchings, voice codec and audio processing capacity
2The C bus is connected to terminal 14.
The Lin of described TA1218N 5, Rin pin can also connect the input 15,16 of the left and right sound channels audio signal that is used to accept DVD output and be used to accept the left and right sound channels audio signal input end 17 of another road external equipment output.
Audio signal between described MSP3440G 2 and the TA1218N 5 connects the common resistance-capacitance coupling of employing and connects; The connection of each input/output terminal also adopts common resistance-capacitance coupling to connect.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model in the television set with video tape recorder function;
Fig. 2 is the circuit block diagram of the utility model in the television set with video tape recorder function and DVD playing function;
Fig. 3 is the circuit block diagram of an application example of the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Shown in Fig. 1 is the circuit block diagram of the utility model in the television set with video tape recorder function.Realize following function:
1. when televiewing, television field frame intermediate-freuqncy signal SIF enters the voice decoder of MSP3440G 2 from terminal 1, carry out stereo STEREO or single-audio MONO decoding, after obtaining corresponding audio signal, enter diverter switch, be divided into two-way output in diverter switch, the one tunnel enters the audio processing unit carries out outputing to the terminal 3,4 that connects audio power amplifier after the stereo processing; Other one the tunnel sends into TA1218N 5 after sending MSP3440G, after switch TA1218N 5 inside, television audio signals is delivered to the terminal 6,7 that connects the video tape recorder assembly, and for recording use, TA1218N 5 sends one road television audio signals in addition to audio output 12,13 simultaneously;
2. when using external equipment, after the audio signal of external equipment output is sent into TA1218N 5 from terminal 10,11, switch through diverter switch, be divided into two-way, one the tunnel sends into MSP3440G 2 after going out TA1218N 5, in the diverter switch of MSP3440G 2 inside, switch after audio is handled and deliver to the terminal 3,4 that is connected audio power amplifier, and take out one the tunnel simultaneously and deliver to terminal 12,13 as audio output signal with television field frame; The terminal 6,7 that connects the video tape recorder assembly is delivered to after going out TA1218N 5 in another road, for recording use;
3. when video tape recorder is play, after the audio signal that video tape recorder broadcasts is sent into TA1218N 5 from terminal 8,9, after switching, diverter switch sends into MSP3440G 2, in the diverter switch of MSP3440G 2 inside, switch after audio is handled and deliver to the terminal 3,4 that is connected audio power amplifier, and take out one the tunnel simultaneously and arrive terminal 12,13 as audio output signal with television field frame;
4. during the two sound accompaniment SAP of video tape recorder assembly record tv broadcasting, television field frame intermediate-freuqncy signal SIF enters MSP3440G 2 from terminal 1, after decoding, obtain two sound accompaniment SAP signals and single-audio MONO signal, after these two kinds of audio signals were switched in the diverter switch of MSP3440G 2 inside, two sound accompaniment SAP signals were delivered to the terminal 3,4 that connects audio power amplifier after the audio processing unit processes; And the audio signal L channel of sending MSP3440G 2 to TA1218N 5 is a single-audio MONO signal, R channel is two sound accompaniment SAP signals, switch in TA1218N 5 inside with other audio signal of sending into simultaneously, these two kinds of audio signals are delivered to the terminal 6,7 that connects the video tape recorder assembly, for recording use; And output to terminal 12,13 by other one the tunnel simultaneously, as audio output signal.
Above-mentioned every function is by the I that connects by terminal 14
2Total line traffic control MSP3440G 2 of C and TA1218N 5 work in coordination, and finish jointly.
Shown in Figure 2 is the circuit block diagram of the utility model in the television set with video tape recorder function and DVD playing function.Except above-mentioned functions, can also realize following function:
1.DVD when playing, after the audio signal that DVD plays is sent into TA1218N 5 from terminal 15,16, switch through diverter switch, be divided into two-way, one the tunnel sends into MSP3440G 2 after going out TA1218N 5, in the diverter switch of MSP3440G 2 inside, switch after audio is handled and deliver to the terminal 3,4 that is connected audio power amplifier, and take out one the tunnel simultaneously and deliver to terminal 12,13 as audio output signal with television field frame; The terminal 6,7 that connects the video tape recorder assembly is delivered to after going out TA1218N 5 in another road, for recording use;
2. video tape recorder assembly recording television signal and simultaneously when watching the DVD program, at this moment need two kinds of audio signals, a kind of is television audio signals, television field frame intermediate-freuqncy signal SIF sends into MSP3440G 2 from terminal 1, carry out stereo STEREO or single-audio MONO decoding, after obtaining corresponding audio signal, after the diverter switch of MSP3440G 2 inside, deliver to TA1218N 5, switch in TA1218N 5 with other audio signal of sending into simultaneously, television audio signals is delivered to the terminal 6,7 that connects the video tape recorder assembly the most at last, for recording use; Another audio signal that needs is the audio signal that DVD plays back, after this audio signal is sent into TA1218N5 from terminal 15,16, switch through diverter switch, deliver to MSP3440G 2, switch after the audio processing unit is delivered to the terminal 3,4 that connects audio power amplifier through the diverter switch of MSP3440G 2 inside; Take out one road DVD playing audio signal simultaneously and deliver to terminal 12,13, as audio output signal.
Fig. 3 is the circuit block diagram of an application example of the utility model.On the basis of Fig. 2, increased and be used to connect second external equipment output left and right sound channels audio signal terminal 17, one group of left and right sound channels input pin of this terminal connection TA1218N 5.Can make television set when finishing above-mentioned all functions, can insert the audio signal of two-way external equipment input simultaneously with video tape recorder function and DVD playing function.
Beneficial effect of the present utility model is, in the switching of carrying out general audio signal, also realized having the television set of video tape recorder function and had the video tape recorder function and the television set neutral body sound codec of DVD playing function, audio are handled and two sound accompaniment such as records at comparatively complicated function.
Claims (3)
1. one kind is carried out the device that multidirectional switching and audio are handled to multipath audio signal, form by integrated circuit MSP3440G (2), TA1218N (5), input and output terminal (1), (3), (4), (6), (7), (8), (9), (10), (11), (12), (13) and I2C bus splicing ear (14), its technical characterictic is, in television set with video tape recorder function, work in coordination by the total line traffic control MSP3440G of I2C (2) and the TA1218N (5) that connect by terminal (14), acting in conjunction, realize following function:
(a). when televiewing, decoding obtains in MSP3440G (2) stereo STEREO or single-audio MONO audio signal, after diverter switch, the one tunnel outputs to terminal (3), (4) that connect audio power amplifier after audio is handled; Other one the tunnel sends into TA1218N (5), delivers to the terminal (6), (7) that connect the video tape recorder assembly after the switching, sends one the road simultaneously in addition to audio output (12), (13);
(b). when using external equipment, the audio signal of external equipment is after TA1218N (5) switches, one the tunnel sends into MSP3440G (2), switch in the diverter switch of portion after audio is handled within it and deliver to terminal (3), (4) that connect audio power amplifier, and take out one the tunnel simultaneously and deliver to terminal (12), (13) as audio output signal; Terminal (6), (7) that connect the video tape recorder assembly are delivered on another road;
(c). when video tape recorder is play, the audio signal that video tape recorder broadcasts is sent into MSP3440G (2) behind TA1218N (5), the diverter switch of portion is switched after audio is handled and is delivered to terminal (3), (4) that connect audio power amplifier within it, and take out simultaneously one the tunnel as audio output signal to terminal (12), (13);
(d). during the two sound accompaniment SAP of video tape recorder assembly record tv broadcasting, decode through MSP3440G (2) and to obtain two sound accompaniment SAP signals and single-audio MONO signal, after the diverter switch of portion was switched within it, two sound accompaniment SAP signals were handled through audio and are delivered to terminal (3), (4) that connect audio power amplifier; And the audio signal left and right sound channels of delivering to TA1218N (5) is respectively single-audio MONO signal, two sound accompaniment SAP signal, after switching, TA1218N (5) delivers to terminal (6), (7) that connect the video tape recorder assembly, and output to terminal (12), (13) by other one the tunnel simultaneously, as audio output signal.
2. the device that multipath audio signal is carried out multidirectional switching and audio processing according to claim 1, its technical characterictic is, increase input terminal (15), (16) of DVD player, in television set, can also realize following function with video tape recorder function and DVD playing function:
When (a) .DVD plays, after the audio signal that DVD plays is sent into TA1218N (5) switching, one the tunnel sends into MSP3440G (2), the diverter switch of portion is switched after audio is handled and is delivered to terminal (3), (4) that connect audio power amplifier within it, and takes out one the tunnel simultaneously and deliver to terminal (12), (13) as audio output signal; Terminal (6), (7) that connect the video tape recorder assembly are delivered on another road;
(b). video tape recorder assembly recording television signal and simultaneously when watching the DVD program, the television field frame intermediate-freuqncy signal obtains STEREO or single-audio MONO through MSP3440G (2) decoding, delivering to TA1218N (5) within it after the diverter switch of portion switches, deliver to the terminal (6), (7) that connect the video tape recorder assembly again, for recording use; The audio signal that DVD plays back, send into TA1218N (5) and after switching, deliver to MSP3440G (2), switch after audio is handled terminal (3), (4) that connect audio power amplifier by its inner diverter switch, take out one road DVD playing audio signal simultaneously and deliver to terminal (12), (13), as audio output signal.
3. according to claim 1 and the 2 described devices that multipath audio signal carried out multidirectional switching and audio processing, its technical characterictic is, increase by one group and be used to connect external equipment output left and right sound channels audio signal terminal (17), this terminal connects TA1218N in (5).Make television set can insert the audio signal of two-way external equipment input simultaneously with video tape recorder function and DVD playing function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201047572U CN2676530Y (en) | 2003-12-31 | 2003-12-31 | An apparatus for performing multiway switching and sound effect processing on multi-path audio signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201047572U CN2676530Y (en) | 2003-12-31 | 2003-12-31 | An apparatus for performing multiway switching and sound effect processing on multi-path audio signal |
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| Publication Number | Publication Date |
|---|---|
| CN2676530Y true CN2676530Y (en) | 2005-02-02 |
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|---|---|---|---|
| CNU2003201047572U Expired - Fee Related CN2676530Y (en) | 2003-12-31 | 2003-12-31 | An apparatus for performing multiway switching and sound effect processing on multi-path audio signal |
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| CN (1) | CN2676530Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937886A (en) * | 2012-10-29 | 2013-02-20 | 珠海全志科技股份有限公司 | Audio frequency multidevice channel outputting method and device |
| CN106060743A (en) * | 2016-08-03 | 2016-10-26 | 上海山景集成电路股份有限公司 | Microphone, microphone combination and microphone signal processing method |
-
2003
- 2003-12-31 CN CNU2003201047572U patent/CN2676530Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937886A (en) * | 2012-10-29 | 2013-02-20 | 珠海全志科技股份有限公司 | Audio frequency multidevice channel outputting method and device |
| CN106060743A (en) * | 2016-08-03 | 2016-10-26 | 上海山景集成电路股份有限公司 | Microphone, microphone combination and microphone signal processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guangdong Changhong Electronics Co., Ltd. Assignor: Sichuan Changhong Electrical Appliance Co., Ltd. Contract fulfillment period: 2006.4.15 to 2012.4.15 Contract record no.: 2008440000483 Denomination of utility model: An apparatus for performing multiway switching and sound effect processing on multi-path audio signal Granted publication date: 20050202 License type: Exclusive license Record date: 20081211 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.4.15 TO 2012.4.15; CHANGE OF CONTRACT Name of requester: GUANGDONG CHANGHONG ELECTRONICS CO., LTD. Effective date: 20081211 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050202 Termination date: 20111231 |