CN101242503A - Multi-path transmission system and method for multimedia signal - Google Patents
Multi-path transmission system and method for multimedia signal Download PDFInfo
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- CN101242503A CN101242503A CNA2007100004407A CN200710000440A CN101242503A CN 101242503 A CN101242503 A CN 101242503A CN A2007100004407 A CNA2007100004407 A CN A2007100004407A CN 200710000440 A CN200710000440 A CN 200710000440A CN 101242503 A CN101242503 A CN 101242503A
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Abstract
The present invention provides a multiplex system and its method of multimedia signal, the system includes a multimedia signal input end, a multiplexer, a controller, a multimedia signal conversion unit. When the multimedia signal is transmitted to the multimedia signal input end, the kinds of the multimedia signal is identified to generate identifying result. The identifying result is transmitted to the control unit, then, the multiplexer is controlled by contrasting the identifying result and matching software means, the multiplexer generates surviving multimedia signal via multipath transmission, and the signal conversion action is processed by transmitting to the multimedia signal conversion unit, generating conversion signal, finally the conversion signal is transmitted. The invention processes selection and distribution the action of output path of different kinds of multimedia signals received by the multiplex system of the multimedia by utilizing tool having multiplex function, this reduces useof the multimedia signal converter to make the cost greatly lower.
Description
Technical field
The present invention relates to a kind of multi-media signal device, relate in particular to a kind of multiplex system and method thereof of multi-media signal.
Background technology
Flourish along with global information market, also and then when the river rises the boat goes up for the specification requirement of multi-media signal display system, in the evolution in this multimedia video world, the standard specification of many multi-media signals is consequentiality also, for example CVBS, S-video, YUV, RGB, video signal compression standard (Motion PicturesExpert Group, MPEG) etc.
Yet, different users is also different to the demand of multi-media signal, so each manufacturer is in order to satisfy the such demand of users, all one after another multi-media signal display system is on the market improved, for example in its display system, adding is as multiplexer, some zero elements of multi-media signal transducer etc., increase the function of its display system, for example behind the multi-media signal that receives the various criterion specification, the multi-media signal of various criterion specification all connects a relative multi-media signal transducer, after these multi-media signals process conversions, utilize multiplexer to have multiplex function, carry out multiplex work, with the multi-media signal that shows the various criterion specification etc.Wherein, in order to satisfy above function, the use of the multi-media signal transducer that is increased etc. has but increased the required production cost that expends of these multi-media display systems widely in these multi-media display systems.
The display control unit that in TaiWan, China patent TW No.M270453 (multichannel real-time audio-video output display control unit), is disclosed, as shown in Figure 1, wherein comprise most channel signals input sources 1, can be further by a signal converter 11, carry out the signal type conversion as Digital to Analog Converter, then, controller 8 input control signals carry out multiplex work to controlled processing unit 7 with control of video multiplexer 4.Yet, though this invention reaches the real-time purpose that shows of multichannel that this invention is desired to reach, but used a large amount of signal converter 11 during the course, if more channel input source is promptly arranged, just it is corresponding to need more signal converter, this measure has not only reduced overall system efficiency, has also increased the production cost of producing this multichannel real-time audio-video output display control unit.
In addition on the one hand, in the multi-media signal display system in the past, the multi-media signal display system can only the display part kind multi-media signal, for example can only the display standard resolution signal, and can not show high-accuracy resolution signal, perhaps can only show high-accuracy resolution signal, but can not the display standard resolution signal.Face is very inconvenient in the use to make the user, and not hommization.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of multiplex system and method thereof of multi-media signal, to solve in the prior art, in order to promote the function of multi-media signal display system, and used the multi-media signal transducer in large quantities, the problem of spent a large amount of production costs, and the multi-media signal display system restricted phenomenon of multi-media signal that can show.
Multiplex system and method thereof according to multi-media signal proposed by the invention, its system comprises: a multi-media signal input, a control unit, a multiplexer, a multi-media signal converting unit, wherein, multiplexer has N receive channel and K delivery channel, the multi-media signal converting unit comprises K multi-media signal transducer, and N is more than or equal to 2, and K is more than or equal to 1, and N is greater than K.
When the multi-media signal input receives multi-media signal input, judge this multi-media signal, and produce an identification result, and multi-media signal and identification result be sent to multiplexer and control unit respectively, control unit produces a control signal according to identification result, multiplexer then carries out multiplex work according to control signal, produces a survival multi-media signal, and last multi-media signal converting unit is changed this survival multi-media signal and with its output.
Multiplex system and method thereof according to multi-media signal proposed by the invention, it can further comprise: multi-media signal comprises two kinds of first signal and secondary signals, the multi-media signal converting unit comprises the first signal converter group and secondary signal converter bank, control unit produces corresponding control signal according to first signal or secondary signal, multiplexer carries out multiplexing work according to control signal, and producing the survival multi-media signal, last first signal converter group or secondary signal converter bank will changes this multi-media signal and with its output of surviving.
Multiplex system and method thereof according to the multi-media signal that is proposed among the present invention, can further comprise: when the first signal tendency to develop is delivered to a secondary signal converter bank and carried out switching motion, the contained discrimination power of first signal must increase a minimum value position (least significant bit, LSB), to satisfy the acceptance criteria of secondary signal converter bank; In the same manner, when the secondary signal tendency to develop was delivered to the first signal converter group and carried out switching motion, the contained discrimination power of this secondary signal must reduce by a LSB value, to satisfy the acceptance criteria of the first signal converter group.
The present invention utilizes multiplexer to have multiplex function, with received different types of multi-media signal in the multimedia multiplex system, select and distribute the action of outgoing route, and then reduce the use of multi-media signal transducer, make manufacturing cost significantly to reduce.
Description of drawings
Fig. 1 is the multiplex system schematic diagram of prior art multi-media signal;
Fig. 2 is the schematic diagram of the multiplex system of multi-media signal of the present invention;
Fig. 3 is the method flow diagram of the multiplex system of multi-media signal of the present invention;
Fig. 4 is the system schematic of execution mode further among Fig. 2 embodiment of multiplex system of multi-media signal of the present invention.
Wherein, Reference numeral:
1: most channel signals input sources 4: video multiplexer
7: controlled processing unit 8: controller
11: signal converter 200: the multiplex system of multi-media signal
201: multi-media signal input 202: control unit
203: multiplexer 204: the multi-media signal converting unit
400: the multiplex system 401 of multi-media signal: multi-media signal receiving terminal
402: control unit 403: multiplexer
404: 405: the first signal converter groups of multi-media signal converting unit
406: the secondary signal converter bank
Embodiment
Please refer to Fig. 2, it is the calcspar of multiplex system of the multi-media signal of the embodiment of the invention.Wherein, multi-media signal multiplex system (encoding system for multimediasignal) 200, comprise a multi-media signal input (multimedia signal input) 201, one control unit (control unit) 202, one multiplexer (multiplexer, MUX) 203, one multi-media signal converting unit (multimedia signal converter unit) 204.Multi-media signal input 201, come from different multimedia signal source (multimedia signal source) variety classes that is produced or the multi-media signal of various criterion specification (multimedia signal) in order to reception, for example JPG, MPEG-II, standard resolution signal (standard definition signal, SD signal) and high-accuracy resolution signal (high definition, HD signal) etc.In addition, this multi-media signal input 201 is also in order to the kind of its received multi-media signal of identification.Wherein, multi-media signal can comprise voice signal (audio signal) and signal of video signal (video signal).
Multi-media signal converting unit 204 is carried out the action of conversion of signals in order to the multi-media signal of will surviving, with generation switching signal (converted signal), and output.Wherein, this multi-media signal converting unit 204 can comprise K multi-media signal transducer (multimedia signal converter), and this multi-media signal transducer can for digital revolving die intend transducer (digital to analogyconverter, DAC).
This invention is for reducing the employed multi-media signal transducer of multi-media signal display system quantity, to reduce production costs.So utilize multiplexer 203 can carry out multiplex function, with different types of multi-media signal, under the control of control unit 202, these control unit 202 specified outgoing routes (output path) are opened, and output survival multi-media signal, to reduce the use of multi-media signal transducer.
For instance, the multiplex system of this multi-media signal can be imported the different multi-media signal of N kind.As shown in Figure 3, when multi-media signal input 201 receives wherein a kind of in this N kind multi-media signal, shown in step S301,,, receive different types of multi-media signal as pci interface or VGA interface by a multi-media signal input.Control central processing unit (Central Processing Unit through a north bridge chips (north bridge), CPU), the action of AGP and pci bus, the last multi-media signal that comes identification to import via a central processing unit, produce an identification result, as step S302, (this multi-media signal input, north bridge chips and central processing unit do not illustrate).This multi-media signal and identification result are sent to multiplexer 203 and control unit 202 respectively.Default buffer hypothesis is respectively first buffer and second buffer in the software approach in the control unit 202, the stored temporary value of first buffer is set at A, the stored temporary value of second buffer is set at B, A will form N different end value with the mutual arrangement of B, process contrasts mutually with the kind of the multi-media signal that multiplex system allowed of this multi-media signal, thereby produces N kind control signal.Control unit 202 receives this identification result, does mutual contrast through end value corresponding with it, produces a control signal, as step S303.When multiplexer 203 receives this multi-media signal, because this multiplexer 203 has N passage (channel), so every kind of multi-media signal all has its corresponding passage, the control signal imported according to this control unit 202 of multiplexer 203 then, decide open outgoing route, with this multi-media signal, the multi-media signal of promptly surviving, export multi-media signal converting unit 204 to, because this multiplexer 203 has K output channel, so every kind of survival multi-media signal all has its corresponding multi-media signal transducer, as step S304.When multi-media signal converting unit 204 receives this survival multi-media signal, because these multi-media signal converting unit 204 hypothesis have K multi-media signal transducer, so every kind of survival multi-media signal all has its corresponding multi-media signal transducer, promptly this survival multi-media signal has its corresponding multi-media signal transducer, this multi-media signal transducer multi-media signal of will surviving carries out the action of conversion of signals, to produce a corresponding switching signal, as step S305.At last, again this switching signal is done follow-up processing and output, as step S306.Wherein, N is more than or equal to 2, and K is less than N.
In addition on the one hand, contained temporary value in these control unit 202 interior first contained buffers and second buffer is respectively A and B.And the multi-media signal transducer quantity in the multiplex system of A and this multi-media signal is relevant, and the kind quantity of the multi-media signal that B then can receive with the multiplex system of this multi-media signal is relevant.
In order further to set forth content of the present invention,, please refer to shown in Figure 4 so the further execution mode of multiplex system of the multi-media signal of a Fig. 2 is provided.Its multiplex system 400 comprises a multi-media signal input 401, a control unit 402, a multiplexer 403 and a multi-media signal converting unit 404.
Wherein, this first signal and secondary signal respectively comprise the P kind multi-media signal different with the Q kind respectively.P+Q=N, P, Q are more than or equal to 1.
Multi-media signal converting unit 404, it mainly comprises two kinds of multi-media signal transducers, is respectively one first a signal converter group 405 and a secondary signal converter bank 406.This first signal converter group 405 and this secondary signal converter bank 406 respectively comprise K1 first signal converter and K2 secondary signal transducer respectively, in order to change different types of survival multi-media signal.In addition on the one hand, this first signal converter group 405 except can changing different types of first signal, also convertible variety classes and secondary signal through adjusting.Similarly, this secondary signal converter bank 406 except can changing different types of secondary signal, also convertible variety classes and first signal through adjusting.K1, K2 are more than or equal to 0, and K1 adds K2 must be less than N, K1+K2=K, and right K1 and K2 are not 0 simultaneously.
For instance, when a multi-media signal inputs to the multiplex system of multi-media signal, this multi-media signal input 401, multi-media signal input 201 as shown in Figure 2, can judge that the multi-media signal of this input belongs to first signal or secondary signal, and then judge which kind of multi-media signal this multi-media signal is again.
With preferred embodiment of the present invention, this first signal can be standard resolution signal (standard definition signal, SD signal), this secondary signal can be high-accuracy resolution signal (high definition signal, HD signal), and this first signal converter group can be a standard resolution signal converter group, it comprises K1 standard resolution signal converter, this secondary signal converter bank can be a high-accuracy resolution signal converter bank, and it comprises K2 high-accuracy resolution signal transducer.
If when this multi-media signal belongs to wherein a kind of in this P kind standard resolution signal, and this standard resolution signal has the discrimination power of 10bit.And this control unit 402 also can produce corresponding control signal according to the identification result of this standard resolution signal, and is sent to multiplexer 403.This multiplexer 403 can be opened one of them passage in its N passage according to this control signal, output one standard resolution signal (the survival SD signal) SD of surviving
i, and be sent to this survival standard resolution signal SD
iStandard resolution signal converter in the pairing first signal converter group 405 with 10bit discrimination power is converted into a standard resolution switching signal.Wherein i is an i passage in the multiplexer 403, and this first signal converter group 405 comprises 3 standard resolution signal converters.
In like manner,, and have the discrimination power of 12bit, also can be transferred into multiplexer 403, produce high-accuracy resolution signal (the survival HD signal) HD of surviving if when this multi-media signal belongs to wherein a kind of in the high-accuracy resolution signal of this Q kind
j, and be sent to this high-accuracy resolution signal HD of surviving
jHigh-accuracy resolution signal transducer in the pairing secondary signal converter bank 406 with 12bit discrimination power is converted into a high-accuracy conversion of resolution signal.Wherein j is a j passage in the multiplexer 402.Wherein i is not equal to j, and this secondary signal converter bank 406 comprises 3 high-accuracy resolution signal transducers.
So in the past, the multi-media signal display system can only the display part kind multi-media signal, for example can only the display standard resolution signal, and can not show high-accuracy resolution signal, perhaps can only show high-accuracy resolution signal, but can not the display standard resolution signal.Face is very inconvenient in the use to make the user, and not hommization.For this reason, standard resolution signal converter group in the multi-media signal converting unit 404 that content of the present invention provided and high-accuracy resolution signal converter bank, the function that has transfer standard resolution signal and high-accuracy resolution signal simultaneously is so can overcome the above problems.
When a standard resolution signal with 10bit discrimination power inputs to the multiplex system of multi-media signal, if standard resolution signal converter group is in damaged condition can't use the pairing survival standard resolution of this standard resolution signal signal SD for this
iBefore being sent to the secondary signal converter bank 406 do conversions with 12bit discrimination power, the LSB value that this standard resolution signal will increase a 2bit adjusts, to meet the acceptance criteria of secondary signal converter bank 406.
In like manner, input to the multiplex system of multi-media signal when a high-accuracy resolution signal with 12bit discrimination power, if this has in damaged condition can't the use of high-accuracy resolution signal converter bank of 12bit, the high-accuracy resolution signal HD of the pairing survival of this high-accuracy resolution signal
jBefore being sent to the first signal converter group, the 405 do conversions with 10bit discrimination power, the LSB value that this standard resolution signal will reduce by a 2bit adjusts, to meet the acceptance criteria of the first signal converter group 405.
In sum, the present invention is the multiplex system of a multi-media signal, utilizes the multiplexing function of multiplexer to reduce manufacturing cost, and can solve the multi-media signal display system and can show the restricted phenomenon of multi-media signal.
The advantage that content of the present invention provided is, utilize multiplexer to have multiplex function, with received different types of multi-media signal in the multimedia multiplex system, select and distribute the action of outgoing route, and then the use of reduction multi-media signal transducer, make manufacturing cost significantly to reduce.
Another advantage that content of the present invention provided is that control unit cooperates the use of a software approach, utilizes the adjustable of this software approach, produces the control signal that is enough to control this multiplexer.Make that the user can be required according to it, adjust the setting of this software approach.
The another advantage that content of the present invention provided is, though the multiplex system of this multi-media signal can receive multi-media signal miscellaneous, under the situation of using a spot of multi-media signal transducer, still can make System Operation normal.
The advantage again that content of the present invention provided is, multi-media signal transducer in the multi-media signal converting unit has the function of the dissimilar multi-media signal of conversion, so the multiplex system of this multi-media signal can show different types of multi-media signal, and unrestricted.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; being familiar with those of ordinary skill in the art ought can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (24)
1. the multiplex system of a multi-media signal is characterized in that, this multiplex system includes:
One multi-media signal input;
One multiplexer, it is linked to this multi-media signal input, and has a plurality of receive paths and one or more output channel, in order to receive and to do the multi-media signal that this multi-media signal input of multiplexing is imported, to produce a survival multi-media signal;
One control unit, it is linked to this multi-media signal input and this multiplexer, in order to this multi-media signal of being imported according to this multi-media signal input, controls this multiplexer; And
One multi-media signal converting unit, it is linked to this multiplexer, and comprises one or more multi-media signal transducers, and it is in order to changing this survival multi-media signal, and produces a switching signal;
The receive path number of this multiplexer is greater than the output channel number of this multiplexer, and greater than multi-media signal transducer number.
2. the multiplex system of multi-media signal according to claim 1 is characterized in that, this control unit comprises a software approach.
3. the multiplex system of multi-media signal according to claim 2 is characterized in that, default at least two buffers in this software approach.
4. the multiplex system of multi-media signal according to claim 1, it is characterized in that, this multi-media signal converting unit comprises one first a signal converter group and a secondary signal converter bank, this first signal converter group comprises at least one first signal converter, and this secondary signal converter bank comprises at least one second instruction and changes transducer.
5. the multiplex system of multi-media signal according to claim 4 is characterized in that, this first signal converter group is a standard resolution signal converter group, and it comprises at least one standard resolution signal converter.
6. the multiplex system of multi-media signal according to claim 4 is characterized in that, this secondary signal converter bank is a high-accuracy resolution signal converter bank, and it comprises at least one high-accuracy resolution signal transducer.
7. the multiple transmission method of a multi-media signal is characterized in that, this multiple transmission method step comprises:
Import multi-media signal to a multi-media signal input;
The kind of this multi-media signal of identification, and produce an identification result, this identification result is sent to a control unit;
This control unit contrasts this identification result and cooperates a software approach, produces a control signal, controls a multiplexer and does the multiplexing action;
According to this control signal, this multi-media signal of multiplexing produces a survival multi-media signal, and is sent to a multi-media signal converting unit, to carry out switching motion further;
Change this survival multi-media signal, produce a switching signal; And
Export this switching signal;
This multi-media signal can be a signal of video signal or a voice signal, and this multiplexer comprises a plurality of receive paths and at least one output channel, in order to the running demand of this multi-media signal input and this multi-media signal converting unit to be provided, the receive path number of this multiplexer is greater than the output channel number of this multiplexer.
8. the multiple transmission method of multi-media signal according to claim 7 is characterized in that, this control unit comprises this software approach, so that this multiplexer is carried out control action.
9. the multiple transmission method of multi-media signal according to claim 8, it is characterized in that, this software approach is preset a plurality of buffers, contained value in this buffer, produce multiple end value through arranging mutually, this multiple end value of this control unit utilization produces the various control signal, comes multiplexer is carried out control action.
10. the multiple transmission method of multi-media signal according to claim 8 is characterized in that, this software approach is preset two buffers, is respectively one first buffer and one second buffer.
11. the multiplex system of multi-media signal according to claim 10 is characterized in that, the temporary value in this first buffer decides according to the output channel number of this multiplexer.
12. the multiplex system of multi-media signal according to claim 10 is characterized in that, the temporary value in this second buffer decides according to the receive path number of this multiplexer.
13. the multiple transmission method of multi-media signal according to claim 8 is characterized in that, this multi-media signal can be one first signal or a secondary signal.
14. the multiplex system of multi-media signal according to claim 13, it is characterized in that, this multi-media signal converting unit comprises one first a signal converter group and a secondary signal converter bank, and in this first signal converter group and this secondary signal converter bank, comprise at least one first signal converter and at least one secondary signal transducer respectively.
15. the multiplex system of multi-media signal according to claim 14, it is characterized in that, this first signal converter group is a standard resolution signal converter, it comprises at least one standard resolution signal converter, this secondary signal converter bank is a high-accuracy resolution signal converter bank, and it comprises at least one high-accuracy resolution signal transducer.
16. the multiplex system of multi-media signal according to claim 14, it is characterized in that, first signal converter number in this first signal converter group and the secondary signal transducer number in this secondary signal converter bank be all less than the receive path number of this multiplexer, and this first signal converter number and this secondary signal transducer are counted the receive path number of addition less than this multiplexer.
17. the multiple transmission method of multi-media signal according to claim 14, it is characterized in that, this multi-media signal is this first signal, and when this secondary signal converter bank is delivered in this first signal tendency to develop, the contained discrimination power of this first signal need increase a minimum value position, to satisfy an acceptance criteria of this secondary signal converter bank.
18. the multiple transmission method of multi-media signal according to claim 17 is characterized in that, this minimum value place value is 2 positions.
19. the multiple transmission method of multi-media signal according to claim 17 is characterized in that, this discrimination power is 10 positions.
20. the multiple transmission method of multi-media signal according to claim 14, it is characterized in that, this multi-media signal is this secondary signal, and when this first signal converter group is delivered in this secondary signal tendency to develop, the contained discrimination power of this secondary signal need reduce by a minimum value place value, to satisfy an acceptance criteria of this first signal converter group.
21. the multiple transmission method of multi-media signal according to claim 20 is characterized in that, this minimum value place value is 2 positions.
22. the multiple transmission method of multi-media signal according to claim 20 is characterized in that, this discrimination power is 12 positions.
23. the multiple transmission method of multi-media signal according to claim 13 is characterized in that, this first signal is a standard resolution signal, and this secondary signal is a high-accuracy resolution signal.
24. the multiple transmission method of multi-media signal according to claim 8 is characterized in that, this multi-media signal is a signal of video signal.
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| CNA2007100004407A CN101242503A (en) | 2007-02-07 | 2007-02-07 | Multi-path transmission system and method for multimedia signal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143994A (en) * | 2013-05-08 | 2014-11-12 | 成都国星通信有限公司 | Multi-frequency radio-frequency signal transmission method |
| CN104902192A (en) * | 2015-05-07 | 2015-09-09 | 深圳市创凯电子有限公司 | Transmission method and equipment for multipath signals |
-
2007
- 2007-02-07 CN CNA2007100004407A patent/CN101242503A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143994A (en) * | 2013-05-08 | 2014-11-12 | 成都国星通信有限公司 | Multi-frequency radio-frequency signal transmission method |
| CN104143994B (en) * | 2013-05-08 | 2016-03-02 | 成都国星通信有限公司 | A kind of method of multi-frequency radio frequency Signal transmissions |
| CN104902192A (en) * | 2015-05-07 | 2015-09-09 | 深圳市创凯电子有限公司 | Transmission method and equipment for multipath signals |
| CN104902192B (en) * | 2015-05-07 | 2019-02-05 | 深圳市创凯智能股份有限公司 | The transmission method and equipment of multiple signals |
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Open date: 20080813 |