CN105898178A - Signal processing method and signal processor - Google Patents
Signal processing method and signal processor Download PDFInfo
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- CN105898178A CN105898178A CN201510897579.0A CN201510897579A CN105898178A CN 105898178 A CN105898178 A CN 105898178A CN 201510897579 A CN201510897579 A CN 201510897579A CN 105898178 A CN105898178 A CN 105898178A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention provides a signal processing method. The method comprises the steps that an analog signal is acquired, wherein the analog signal is provided by an analog signal source; the analog signal is processed, and the analog signal is converted into a digital signal supported by a USB interface; and the converted digital signal is sent. The invention provides a signal processor. The signal processor comprises an acquiring module which is used for acquiring the analog signal which is provided by the analog signal source which is connected with the signal processor, a processing module which is used for converting the analog signal acquired by the acquiring module into the digital signal supported by the USB interface, and a sending module which is used for sending the digital signal converted by the processing module. According to the signal processing method and the signal processor, the product cost of video devices which comprise a television device is reduced, and the utilization rate of a video device is improved.
Description
Technical field
The present embodiments relate to video technique field, particularly relate at a kind of signal processing method and signal
Reason device.
Background technology
Video equipment at present, such as, television equipment the most all has one or more of analog video letter
Number interface transmission of analogue signal, such as, by audio frequency and video input (Video Audio IN, hereinafter referred to as
AV IN or title AV interface) obtain Composite Video Baseband Signal (Composite Video Broadcast
Signal hereinafter referred to as CVBS) analogue signal, AV interface is audio-video interface, is at present in audiovisual
Applying to obtain widest interface in product, AV interface achieves the separated transmission of Voice & Video, it is to avoid
The image quality decrease that causes because Voice & Video mixing interference, but due to AV interface transmission still
It is the video signal of a kind of brightness/chroma mixing, it is still desirable to display device carries out luminance/chrominance separation to it
With chroma decoding ability imaging, this process separated again that first mixes will necessarily cause the loss of chrominance signal,
Carrier chrominance signal and luminance signal also have the biggest chance and interfere thus the figure picture element that affects final output
Amount.
Existing analogue signal is transmitted, it is also possible to by color difference components interface to obtain YPbPr analogue signal,
YPBPR interface is the one in color difference components interface, represents that video signal is progressive scan aberration output.
Color difference components interface typically utilizes three holding wires to be respectively transmitted light tone and two-way colour difference signal.Video quality
Good than AV interface.Premise is that video equipment, such as television equipment and playback equipment have this color
Difference component interface, and have color difference components connecting line.One group of line of color difference components interface has red, blue, green respectively
Three kinds of colors.Only need to corresponding same color be just on the output input port of TV and playback equipment.But
Color difference components interface is only responsible for conveying video signal, audio-frequency unit, also needs additionally to connect computer with AV line
Video input output interface with playback equipment.YPbPr represents analog video component interface.
Existing analogue signal is transmitted, it is also possible to by display drawing array (Video Graphic Array, letter
Claiming VGA) interface to be to obtain RGB (Red Green Blue, hereinafter referred to as RGB) analogue signal.Its
In, USB interface is a kind of D type interface, has 15 pin holes above, is divided into three rows, often row five.Its
In, except 2 NC (Not Connect) signal, 3 video data buses and 5 ground (Ground,
Hereinafter referred to as GND) signal.In USB interface, chrominance component uses RS343 level standard.RS343
The crest voltage of level standard is 1V.USB interface is the interface type being most widely used on video card.
Along with the development of video technique, digital signal is widely used in video technique field.But mould
Intend signal source exist the most in a large number, include listed above this several including analogue signal much
District and occasion have a lot of application, thoroughly abandon analog signal interface unrealistic.
It is provided with analog signal interface and digital signal interface, Fig. 1 on current a part of video equipment simultaneously
For prior art arranges analog and digital signal Interface Video equipment schematic diagram simultaneously, as it is shown in figure 1,
A video equipment is provided with multiple interfaces, including analog signal interface and digital signal interface, for
Can accept various analogue signal, the analog signal interface being arranged on video equipment also includes multiple analog
Signaling interface, so, at video equipment, such as arranges various analog signal interface simultaneously on television equipment
Significantly improve the cost of video equipment with digital signal interface, cause the waste of device hardware resource.Existing
The above-mentioned various analog signal interfaces having technology to arrange on the video equipments such as television equipment can not get sufficiently
Application, forms the waste of resource, and reduces video equipment product cost, reduces the competitiveness of product.
Summary of the invention
The problem existed for prior art, the embodiment of the present invention provides a kind of signal processing method and signal
Processor, it is not necessary to analog signal interface is set on video equipment, additionally it is possible to obtain easily and utilize
Analogue signal, improves simulation resource utilization while improving video product cost performance.
The embodiment of the present invention provides a kind of signal processing method, including:
Obtaining analogue signal, this analogue signal is provided by simulation signal generator；Process above-mentioned analogue signal, will
This analogue signal is converted into the digital signal that USB interface is supported；Send the digital signal after this conversion.
The embodiment of the present invention provides a kind of signal processor, including:
Acquisition module, is used for obtaining analogue signal, and this analogue signal is by the mould being connected with this signal processor
Intend signal source to provide；Processing module, is converted into USB for this analogue signal obtained by above-mentioned acquisition module
The digital signal that interface is supported；Sending module, for sending the digital signal after this processing module converts.
The signal processing method of embodiment of the present invention offer and signal processor, believed by the simulation that will obtain
The analogue signal that number source provides changes into the digital signal of USB interface support and sends, can be independent obtain
Take the analogue signal that simulation signal generator provides, and be translated into the digital signal that USB interface is supported, will
Digital signal after this conversion is sent to video equipment, such as, and the USB interface of television equipment, can drop
The product cost of low video equipment including television equipment, and make the outward appearance of video equipment more succinct,
Attractive in appearance.Meanwhile, signal processing method and the processor of the embodiment of the present invention can be applied independently various
USB interface is provided but does not provide on the video equipment of analog video interface, make these equipment to obtain
Get the analogue signal that simulation signal generator provides, improve the utilization rate of video equipment simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that under,
Accompanying drawing during face describes is some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is to arrange analog and digital signal Interface Video equipment schematic diagram in prior art simultaneously；
Fig. 2 is signal processing method one embodiment schematic flow sheet of the present invention；
Fig. 3 is another embodiment schematic flow sheet of signal processing method of the present invention；
Fig. 4 is that signal processor of the present invention real executes example structural representation；
Fig. 5 is that real another of signal processor of the present invention executes example structural representation；
Fig. 6 is that signal processor of the present invention is real further executes example structural representation.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with this
Accompanying drawing in bright embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
Fig. 2 is signal processing method one embodiment schematic flow sheet of the present invention, as in figure 2 it is shown, the present invention
Signal processing method, comprises the following steps:
Step 210, obtains analogue signal, and this analogue signal is provided by simulation signal generator；
In this step, acquired analogue signal can be the analogue signal using various standards, permissible
Be analogue signal of the prior art can also be the analogue signal in WeiLai Technology, these various criterions
Analogue signal is provided by its corresponding simulation signal generator, and this is not entered to limit by the embodiment of the present application.
Step 220, processes described analogue signal, and analogue signal is converted into USB (universal serial bus) (Universal
Serial Bus, hereinafter referred to as USB) interface support digital signal；
Process analogue signal acquired in step 210, analogue signal is converted into what USB interface was supported
Digital signal.In a step 220, analogue signal is converted into the digital signal that USB interface is supported, can
To carry out different process according to handled analogue signal institute accepted standard difference, it is to be understood that
No matter which kind of analogue signal is converted into the digital signal that USB interface is supported, prior art can be used
In the analogue signal method that is converted into digital signal.The concrete mark that can be used according to analogue signal
The chip difference that converts that is accurate different and that used uses different method for transformation.
Step 230, sends the digital signal after this conversion；
The digital signal that USB interface after converting in forwarding step 220 is supported.In the particular embodiment,
The digital signal of the USB interface support after this conversion any one can be sent to and USB can be accepted
In the equipment of format digital signal, such as, the television equipment in video equipment.
Signal processing method in the present embodiment can be independent by obtain simulation signal generator provide mould
Intending signal change into the digital signal of USB interface support and send, the digital signal after this conversion can be by
Be sent to arbitrarily to wish to obtain the analogue signal that this simulation signal generator provides on video equipment, and should
Video equipment can only be provided with USB interface, and the analogue signal without being provided with this analogue signal corresponding connects
Mouthful.Thus reduce the product cost of the video equipment including television equipment, improve the profit of video equipment
By rate, and the minimizing of interface can make video equipment outward appearance more succinct, attractive in appearance.
Fig. 3 is another embodiment schematic flow sheet of signal processing method of the present invention, as it is shown on figure 3, this
Clear signal processing method, comprises the following steps:
Step 310, obtains analogue signal, and this analogue signal is provided by simulation signal generator；
Acquired analogue signal can include analog video signal, or, simulated audio signal, it is possible to
To include analog video signal and simulated audio signal simultaneously.This concrete analogue signal includes analog video
Signal, still includes simulated audio signal, or includes analog video signal and simulated audio signal, can
To be distinguished by prior art identification.
Step 321, is converted into YCbCr format digital signal or rgb format numeral by analog video signal
Signal；
It is understood that when the analogue signal obtained in step 310 includes analog video signal, this
Inventive embodiments include being converted into acquired analog video signal YCbCr format video signal or
Rgb format digital signal, can use method for transformation of the prior art to carry out.
It is understood that YCbCr, can be written as sometimes Y ' CbCr, YCBCR or
Y ' CBCR, is the one of color space.The consumer video products such as DVD, video camera, DTV
In, conventional color encoding scheme is YCbCr, and wherein Y refers to that luminance component, Cb refer to chroma blue
Component, and Cr refers to red chrominance component.What YCbCr represented is the color space of DTV (video)
And digital interface, this is international standard.
Step 322, is converted into USB by YCbCr format digital signal or rgb format digital signal and connects
The video signal that mouth is supported；
In step 322, step 310 can convert the YCbCr format video signal obtained
Or rgb format digital signal converts again, change into the video signal that USB interface is supported,
It is understood that conversion herein can also use method for transformation of the prior art.
Step 323, is converted into integrated circuit built-in audio bus (Inter IC by simulated audio signal
Sound, hereinafter referred to as I2S) digital signal；
I2S (Inter IC Sound) bus, also known as integrated circuit built-in audio bus, integrated circuit is built-in
Audio-frequency bus is a kind of bus standard of the voice data transmission between digital audio-frequency apparatus, and this bus is specialized in
Data transmission between audio frequency apparatus, is widely used in various multimedia system.
It is understood that when the analogue signal obtained in step 310 includes simulated audio signal, this
Inventive embodiments includes being converted into acquired simulated audio signal I2S format audio digital signal, can
To use method for transformation of the prior art to carry out.
Step 324, is converted into the digital signal that USB interface is supported by I2S digital signal；
In step 324, step 323 can will convert the I2S format audio digital signal obtained again
Secondary convert, change into the audio digital signals that USB interface is supported, it is to be understood that herein
Conversion can also use method for transformation of the prior art.
Step 330, sends the digital signal after this conversion；
In the present embodiment, concrete it may be that step 322 will convert the USB interface support obtained
Video signal and step 324 in convert the audio digital signals of the USB interface support obtained and carry out
Send.It is understood that can be before transmitting to above-mentioned video signal and above-mentioned digital audio
Signal merges process, or does not merge process, and concrete can implement according to prior art.
The present embodiment will distinguish analog video signal and simulated audio signal in analogue signal, respectively by difference
Existing transformation technology convert, analog video signal is first converted into YCbCr format digital video letter
Number or rgb format digital signal be then converted to USB interface support video signal, and will simulation
Audio signal is first converted into I2S format audio digital signal and is then converted to the digital video that USB interface is supported
Signal, then be transmitted, efficiency transformation efficiency can be improved further.
Additionally, in the present embodiment, acquired analog video signal can be to obtain from component signal source
YPbPr analog video signal；Or, acquired analog video signal can be from AV signal source
The CVBS analog video signal obtained；Or, acquired analog video signal is from VGA signal
The RGB analog video signal that source obtains, or other analog video signal sources acquisition from the prior art
Analog video signal.
Further, in the present embodiment, acquired simulated audio signal can be that component signal source is obtained
The simulated audio signal taken；Or, acquired simulated audio signal can be to obtain from AV signal source
Simulated audio signal；Or, acquired simulated audio signal can obtain from VGA signal source
Simulated audio signal, or other simulated audio signal sources acquisition analog video signal from the prior art.
These audio frequency or video analog signal are commonly used the most in the prior art, are implemented by the application
Example, it may not be necessary to these analog interfaces are set on video equipment and receive analogue signal, such that it is able to
While reducing the cost of video equipment, more make full use of audio frequency or the video signal of prior art, carry
High video equipment and the utilization rate of analogue signal.
Fig. 4 is that signal processor of the present invention real executes example structural representation, and as shown in Figure 4, the present invention believes
Number processor 400 includes:
Acquisition module 410, is used for obtaining analogue signal, and this analogue signal is connected by with this signal processor
Simulation signal generator provide；
Processing module 411, props up for the analogue signal that acquisition module 410 obtains is converted into USB interface
The digital signal held；
Sending module 412, for sending the digital signal after processing module 411 converts.
In the present embodiment, the analogue signal that the simulation signal generator obtained is provided that processor can be independent
Changing into the digital signal of USB interface support and send, the digital signal after this conversion can be sent to
Arbitrarily wish to obtain the analogue signal that this simulation signal generator provides on video equipment, and this video sets
The standby USB interface that can only arrange, and the analog signal interface corresponding without being provided with this analogue signal.Pass through
The signal processor of the embodiment of the present invention is external on video equipment, can make possess USB digital interface
The video equipment the most not comprising analog signal interface gets analogue signal, thus reduces and include television equipment
In the product cost of interior video equipment, improve the utilization rate of video equipment simultaneously.
Fig. 5 is that real another of signal processor of the present invention executes example structural representation, as it is shown in figure 5, the present invention
Signal processor 500 includes, acquisition module 510, processing module 511, and sending module 512 is concrete:
Acquisition module 510, is used for obtaining analogue signal, and this analogue signal is connected by with this signal processor
Simulation signal generator provide；
It is understood that the analogue signal acquired in acquisition module 510 can be to use various standards
Analogue signal, the analogue signal of these various criterions is provided by its corresponding simulation signal generator, and the present invention is real
Execute example this not to be defined.
Processing module 511 can include at first processing unit the 5111, second processing unit the 5112, the 3rd
Reason unit 5113 and fourth processing unit 5114, wherein:
First processing unit 5111, for analog video signal is converted into YCbCr format digital signal or
Rgb format digital signal；
It is understood that when the analogue signal acquired in acquisition module 510 includes analog video signal,
Embodiment of the present invention processing module 511 can include the first processing unit 5111, and this first processing unit will
Analog video signal acquired in acquisition module 510 is converted into YCbCr format video signal or RGB
Format digital signal, can use method for transformation of the prior art to carry out.
Second processing unit 5112, for processing the YCbCr format obtained by the first processing unit 5111
Digital signal or rgb format digital signal are converted into the digital signal that described USB interface is supported；
Concrete, the second processing unit 5112, obtain YCbCr format number from the first processing unit 5111
Word signal or rgb format digital signal, and it is translated into the digital signal that USB interface is supported, can
To be understood by, conversion herein can also use method for transformation of the prior art.
3rd processing unit 5113, for being converted into I2S digital signal by simulated audio signal；
When the analogue signal acquired in acquisition module 510 includes analog video signal, the embodiment of the present invention
Processing module 511 can include the 3rd processing unit 5113, by the analog audio acquired in acquisition module 510
Frequently signal is converted into I2S format audio digital signal, and this conversion can use conversion side of the prior art
Method is carried out.
Fourth processing unit 5114, for processing the I2S digital signal obtained by the 3rd processing unit 5113
It is converted into the digital signal that USB interface is supported.
Fourth processing unit 5114, obtains I2S format digital signal from the 3rd processing unit 5113, and will
It is converted into the digital signal that USB interface is supported, it is to be understood that conversion herein can also use
Method for transformation of the prior art.
It is understood that the second processing unit 5112 and fourth processing unit in the embodiment of the present application
5114 can be same hardware cell, it is also possible to be different hardware cells.In the embodiment of the present application
One processing unit 5111 and the second processing unit 5112 can be same hardware cells, or different hard
Part unit.
Sending module 512, sends the second processing unit 5112 and fourth processing unit 5114 processes and obtains
USB interface support digital signal.
The analog video signal that the present embodiment acquisition module 510 obtains is through the first processing unit 5111 and the
Two processing units 5112 process and obtain the video signal that USB interface is supported, acquisition module 510 obtains
The simulated audio signal taken processes through the 3rd processing unit 5113 and fourth processing unit 5114 and obtains
The audio digital signals that USB interface is supported, and finally sent by sending module 512, can carry further
High efficiency transformation efficiency.
Additionally, the signal processor 500 at the present embodiment can be with external analog signal output equipment phase
Even, analog video signal and the analog audio of the output of analog signal output equipment is obtained by acquisition module 510
Frequently signal.Concrete, in the present embodiment, acquired analog video signal can be from component signal
The YPbPr analog video signal that source obtains；Or, acquired analog video signal can be from AV
The CVBS analog video signal that signal source obtains；Or, acquired analog video signal is from VGA
The RGB analog video signal that signal source obtains.
Further, the simulated audio signal acquired in acquisition module 510 can be that component signal source obtains
Simulated audio signal；Or, the simulated audio signal acquired in acquisition module 510 can be from AV
The simulated audio signal that signal source obtains；Or, the simulated audio signal acquired in acquisition module 510 can
To be the simulated audio signal obtained from VGA signal source.
These audio frequency or video analog signal are commonly used the most in the prior art, such that it is able to reducing
More make full use of audio frequency or the video signal of prior art while the cost of video equipment, improve video
Equipment and the utilization rate of analogue signal.
Fig. 6 is that signal processor of the present invention is real further executes example structural representation, as shown in Figure 6, the present invention
Signal processor, including: video signal Bridge sheet 610, analog-digital converter ADC transducer 620 with
And USB controller 630, such as USB3.0 Controller.
It is understood that video signal Bridge sheet 610 can be analogue signal input, digital signal
The chip of output, the digital signal of its output can be YCbCr format digital signal or rgb format number
Word signal, or HDMI/MHL signal.Mobile terminal high-definition audio and video standard interface (Mobile
High-Definition Link hereinafter referred to as, MHL) be an interface standard, this standard interface can connect
Connect portable consumer electronic device.HDMI (High Definition Multimedia
Interface, hereinafter referred to as HDMI) audio and video frequency signal can be transmitted simultaneously, can the transmission of high-quality ground
The HD video data of uncompressed and multichannel audb data, MHL only uses a bars cable, logical
Cross standard HDMI input interface can be presented on HDTV.
As a example by analogue signal is as component analog signals:
Video signal Bridge sheet 610 obtains the analog video signal YPbPr of component signal source output, and
And this video signal Bridge sheet 610 analog video signal YPbPr is changed into YCbCr format data or
Rgb format digital signal, and will change after YCbCr format data or rgb format digital signal defeated
Going out to USB controller 630, such as USB3.0 Controller630, by USB3.0 Controller630
It is the video signal output that USB interface is supported by YCbCr format transformation of data.
After ADC transducer 620 obtains the audio signal of component signal source output, it is transformed into I2S number
Word signal, and this signal is input to USB3.0 Controller, it is changed into USB format output.
As a example by the AV analogue signal of analogue signal AV IN interface output:
Video signal Bridge sheet 610 obtains the analog video signal CVBS of AV signal source output, and
And this video signal Bridge sheet 610 analog video signal CVBS is changed into YCbCr format data or
Rgb format digital signal (can be called for short RGB/YCbCr formatted data), and will change after
RGB/YCbCr formatted data exports USB controller 630, such as USB3.0 Controller630,
It is changed into the video signal output that USB interface is supported by USB3.0 Controller630.
After ADC transducer 620 obtains the audio signal of AV signal source output, it is transformed into I2S number
Word signal, and this signal is input to USB3.0 Controller, it is changed into USB format output.
As a example by the RGB analogue signal that analogue signal exports for VGA signal source:
Video signal Bridge sheet 610 obtains the analog video signal RGB of VGA signal source output, and
And this video signal Bridge sheet 610 analog video signal RGB is changed into YCbCr format data or
Rgb format digital signal, and will change after RGB/YCbCr formatted data export USB controller
630, such as USB3.0 Controller630, is changed into USB interface by USB3.0 Controller630
The video signal output supported.
After ADC transducer obtains the audio signal of VGA signal source output, it is transformed into I2S numeral
Signal, and this signal is input to USB3.0 Controller, it is changed into USB format output.
Concrete: the video signal Bridge sheet 610 in the present embodiment can be analogue signal input,
The output of RGB/YCbCr formatted data or the output of HDMI/MHL digital signal, ADC transducer 620 can
To be that multipath input audio analogue signal turns digital signal converter, USB controller 630 can be
USB3.0 Controller, above three can also be the chip that in prior art, other are concrete.
USB standard interface power pin in the embodiment of the present application is used for inputting 5V power supply, to adapter
Power supply is provided.
The analog video signal interface of standard configuration in television system, such as, in order to obtain CVBS simulation letter
Number AV IN interface, in order to obtain the component interface of YpbPr analogue signal, and VGA removes,
Above-mentioned interface and USB interface are applied on external adapter by the method for the embodiment of the present application, with
Accessory form is supplied to consumer, reduces the cost of tv product, and the minimizing of interface simultaneously can make outward appearance
More succinct, attractive in appearance.The consumer needing above-mentioned interface can buy this programme adapter and meet demand, no
The consumer needed need not undertake the product expense that this part is brought.The embodiment of the present invention can improve video
Equipment and the utilization rate of analogue signal, improve the aesthetic measure of video product.
Device embodiment described above is only schematically, wherein said illustrates as separating component
Unit can be or may not be physically separate, the parts shown as unit can be or
Person may not be physical location, i.e. may be located at a place, or can also be distributed to multiple network
On unit.Some or all of module therein can be selected according to the actual needs to realize the present embodiment
The purpose of scheme.Those of ordinary skill in the art are not in the case of paying performing creative labour, the most permissible
Understand and implement.
Through the above description of the embodiments, those skilled in the art is it can be understood that arrive each reality
The mode of executing can add the mode of required general hardware platform by software and realize, naturally it is also possible to by firmly
Part.Based on such understanding, the portion that prior art is contributed by technique scheme the most in other words
Dividing and can embody with the form of software product, this computer software product can be stored in computer can
Read in storage medium, such as ROM/RAM, magnetic disc, CD etc., including some instructions with so that one
Computer equipment (can be personal computer, server, or the network equipment etc.) performs each to be implemented
The method described in some part of example or embodiment.
Last it is noted that above example is only in order to illustrate technical scheme, rather than to it
Limit；Although the present invention being described in detail with reference to previous embodiment, the ordinary skill of this area
Personnel it is understood that the technical scheme described in foregoing embodiments still can be modified by it, or
Person carries out equivalent to wherein portion of techniques feature；And these amendments or replacement, do not make corresponding skill
The essence of art scheme departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a signal processing method, it is characterised in that including:
Obtaining analogue signal, described analogue signal is provided by simulation signal generator；
Process described analogue signal, described analogue signal is converted into the digital signal that USB interface is supported；
Send the digital signal after described conversion.
Method the most according to claim 1, it is characterised in that described analogue signal includes that simulation regards
Frequently signal, the described digital signal that described analogue signal is converted into USB interface support includes:
Described analog video signal is converted into YCbCr format digital signal or rgb format digital signal；
And
Described YCbCr format digital signal or described rgb format digital signal are converted into described USB
The digital signal that interface is supported.
Method the most according to claim 1 and 2, it is characterised in that described analogue signal includes mould
Intending audio signal, the described digital signal that described analogue signal is converted into USB interface support includes:
Described simulated audio signal is converted into I2S digital signal；And
Described I2S digital signal is converted into the digital signal that described USB interface is supported.
The most according to the method in claim 2 or 3, it is characterised in that
Described analog video signal is YPbPr analog video signal, and described YPbPr video signal is from component
Signal source obtains；Or
Described analog video signal is CVBS analog video signal, and described CVBS video signal is from AV
Signal source obtains；Or
Described analog video signal is RGB analog video signal, described RGB analog video signal from
VGA signal source obtains.
5. according to the method described in claim, it is characterised in that described simulated audio signal is from described point
Amount signal source obtains；Or, described simulated audio signal obtains from described AV signal source；Or it is described
Simulated audio signal obtains from described VGA signal source.
6. a signal processor, it is characterised in that including:
Acquisition module, is used for obtaining analogue signal, and described analogue signal is connected by with described signal processor
Simulation signal generator provide；
Processing module, the described analogue signal for being obtained by described acquisition module is converted into USB interface and props up
The digital signal held；
Sending module, for sending the digital signal after described processing module converts.
Signal processor the most according to claim 6, it is characterised in that described analogue signal includes
Analog video signal, described processing module includes:
First processing unit, for described analog video signal is converted into YCbCr format digital signal or
Rgb format digital signal；And
Second processing unit, for the described YCbCr format number described first processing unit processes obtained
Word signal or described rgb format digital signal are converted into the digital signal that described USB interface is supported.
8. according to the signal processor described in claim 6 or 7, it is characterised in that described analogue signal
Including simulated audio signal, described processing module also includes:
3rd processing unit, for being converted into I2S digital signal by described simulated audio signal；And
Fourth processing unit, converts for the I2S digital signal described 3rd processing unit processes obtained
The digital signal supported for described USB interface.
9. according to the signal processor described in claim 7 or 8, it is characterised in that
Described analog video signal is YPbPr analog video signal, and described acquisition module can be believed from component
Number source obtains described YPbPr video signal；Or
Described analog video signal is CVBS analog video signal, and described acquisition module can be believed from AV
Number source obtains described CVBS video signal；Or
Described analog video signal is RGB analog video signal, and described acquisition module can be believed from VGA
Number source obtains described RGB analog video signal.
Signal processor the most according to claim 9, it is characterised in that described acquisition module is also
Described simulated audio signal can be obtained from described component signal source；Or, described acquisition module can also
Described simulated audio signal is obtained from described AV signal source；Or, described acquisition module can also be from institute
State VGA signal source and obtain described simulated audio signal.
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| CN201510897579.0A CN105898178A (en) | 2015-12-08 | 2015-12-08 | Signal processing method and signal processor |
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| CN201510897579.0A CN105898178A (en) | 2015-12-08 | 2015-12-08 | Signal processing method and signal processor |
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| CN105898178A true CN105898178A (en) | 2016-08-24 |
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| CN201510897579.0A Pending CN105898178A (en) | 2015-12-08 | 2015-12-08 | Signal processing method and signal processor |
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