CN105898454A - Signal processing device and multimedia playback device - Google Patents
Signal processing device and multimedia playback device Download PDFInfo
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- CN105898454A CN105898454A CN201510811095.XA CN201510811095A CN105898454A CN 105898454 A CN105898454 A CN 105898454A CN 201510811095 A CN201510811095 A CN 201510811095A CN 105898454 A CN105898454 A CN 105898454A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
- H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
- H04N21/42638—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners involving a hybrid front-end, e.g. analog and digital tuners
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention provides a signal processing device and a multimedia playback device. Any multimedia playback device can watch an analog television and a digital television. The signal processing device comprises a signal receiving module, an analog signal processing module, a digital signal processing module and a signal outputting module. The signal receiving module receives an analog television signal, decomposes the received analog television signal, outputs a video analog television signal and an audio analog television signal, receives a digital television signal, carries out frequency reducing on the received digital television signal, and outputs the digital television signal after frequency reducing. The analog signal processing module outputs a pre-formatted signal based on the video analog television signal and the audio analog television signal. The digital signal processing module outputs a pre-formatted signal based on the digital television signal after frequency reducing. The signal outputting module outputs the pre-formatted signal output by the analog signal processing module or the digital signal processing module to a multimedia playback device for playback.
Description
Technical field
The present embodiments relate to signal processing field, particularly relate to a kind of signal processing apparatus and multimedia
Playback equipment.
Background technology
In prior art, only TV is able to receive that anolog TV signals and digital television signal, plays mould
Intending TV programme and digital television program, some other multimedia play equipments, as having display screen
Intelligent sound equipment, computer etc., the most do not possess the function of switchover watching analog TV and DTV, it is clear that
These multimedia play equipments can application scenarios limited.
Summary of the invention
The embodiment of the present invention provides a kind of signal processing apparatus and multimedia play equipment, existing in order to solve
In technology, multimedia play equipment cannot switchover watching analog TV and the defect of DTV.
The embodiment of the present invention provides a kind of signal processing apparatus, including:
Signal receiving module, for when receiving anolog TV signals, to the anolog TV signals received
Carry out resolution process, output video simulation TV signal and audio frequency simulation TV signal；Receiving numeral electricity
During depending on signal, the digital television signal received is carried out down conversion process, the numeral after output down conversion process
TV signal；
Analog signal processing module, for receive signal receiving module output video simulation TV signal and
Audio frequency simulation TV signal, and based on the video simulation TV signal received and audio frequency simulation TV signal,
Output preset format signal；
Digital signal processing module, the numeral electricity after the down conversion process receiving signal receiving module output
Depending on signal, and based on the digital television signal after the down conversion process received, export preset format signal；
Signal output module, is used for connecting analog signal processing module and multimedia play equipment, will simulation
The preset format signal output of signal processing module output plays out to multimedia play equipment；Or,
Connection digital signal processing module and multimedia play equipment, exported by digital signal processing module presets
Format signal output plays out to multimedia play equipment.
The embodiment of the present invention also provides for a kind of multimedia play equipment, in the connection of described multimedia play equipment
State signal processing apparatus.
The signal processing apparatus of embodiment of the present invention offer and multimedia play equipment, it is possible to receive simulation electricity
Carrying out a series of process depending on signal, final output preset format signal plays out to multimedia play equipment,
Also being able to receive digital television signal and carry out a series of process, final output preset format signal is to multimedia
Playback equipment plays out；Therefore, connect what the embodiment of the present invention provided when any multimedia play equipment
During signal processing apparatus, this multimedia play equipment can be with switchover watching analog TV and DTV, multimedia
The function of playback equipment is extended.
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 one of signal processing apparatus example structure schematic diagram of the present invention；
Fig. 2 is the two of signal processing apparatus example structure schematic diagram of the present invention；
Fig. 3 is the three of signal processing apparatus example structure schematic diagram of the present invention；
Fig. 4 is the four of signal processing apparatus example structure schematic diagram of the present invention；
Fig. 5 is the five of signal processing apparatus example structure schematic diagram of the present invention；
Fig. 6 is the six of signal processing apparatus example structure schematic diagram of the present invention.
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.
A kind of signal processing apparatus that the embodiment of the present invention provides is as it is shown in figure 1, specifically can include as follows
Module:
Signal receiving module 101, for when receiving anolog TV signals, to the simulated television received
Signal carries out resolution process, output video simulation TV signal and audio frequency simulation TV signal；Receiving number
During word TV signal, the digital television signal received is carried out down conversion process, after output down conversion process
Digital television signal；
Analog signal processing module 102, for receiving the video simulation electricity of signal receiving module 101 output
Depending on signal and audio frequency simulation TV signal, and based on the video simulation TV signal received and audio frequency simulation
TV signal, exports preset format signal；
Digital signal processing module 103, after the down conversion process receiving signal receiving module 101 output
Digital television signal, and based on the digital television signal after the down conversion process received, lattice are preset in output
Formula signal；
Signal output module 104, is used for connecting analog signal processing module 102 and multimedia play equipment,
Preset format signal output analog signal processing module 102 exported is broadcast to multimedia play equipment
Put；Or, connection digital signal processing module 103 and multimedia play equipment, by Digital Signal Processing
The preset format signal output of module 103 output plays out to multimedia play equipment.
I.e. using the signal processing apparatus that the embodiment of the present invention provides, multimedia play equipment can watch mould
Intend TV, it is also possible to watch DTV.
The signal processing apparatus that the embodiment of the present invention provides specifically can apply to the intelligent sound with display screen
Ring the multimedia play equipment such as equipment, computer, it is also possible to be applied to other various multimedia play equipments,
This is not especially limited by the embodiment of the present invention.
During actual enforcement, as in figure 2 it is shown, signal receiving module 101, specifically can pass through CVBS
(Composite Video Broadcast Signal, Composite Video Baseband Signal) interface is at analogue signal
Reason module 102 exports video simulation TV signal；By Audio (audio frequency) interface to analog signal processing mould
Block 102 exports audio frequency simulation TV signal.
Generally, the digital television signal that digital television signal source sends is high-frequency signal, signal receiving module
101 can carry out down conversion process, the digital television signal of output intermediate frequency to the digital television signal of this high frequency.
Therefore, during actual enforcement, as in figure 2 it is shown, signal receiving module 101, IF can specifically be passed through
(Intermediate Frequency, intermediate frequency) interface exports down conversion process to digital signal processing module 103
After digital television signal.
Owing to current various multimedia play equipments the most all can arrange USB (Universal Serial
Bus, USB (universal serial bus)) interface, therefore, during actual enforcement, as in figure 2 it is shown, signal output module
104, specifically can export analog signal processing module 102 by USB interface to multimedia play equipment
The preset format signal of output, or defeated to multimedia play equipment output digit signals processing module 103
The preset format signal gone out.
Further, above-mentioned analog signal processing module 102, specifically can be by USB interface to signal
Output module 104 exports preset format signal；Above-mentioned digital signal processing module 103, specifically can lead to
Cross USB interface and export preset format signal to signal output module 104.
It should be noted that the embodiment of the present invention does not limit the concrete form of above-mentioned USB interface, permissible
It is standard USB interface, it is also possible to be the USB interface of other forms such as MINI USB interface.
Now, this preset format signal can be USB2.0 signal, it is also possible to for USB3.0 signal, basis
This is also not especially limited by inventive embodiments.
In one particular embodiment of the present invention, analog signal processing module 102 specifically can be such as Fig. 3
Shown in, including:
Signal decoding sub-module 1021, is used for receiving video simulation TV signal, to the video screen module received
Intend TV signal to be decoded processing, the video simulation TV signal after output decoding process；
Analog to digital conversion submodule 1022, is used for receiving audio frequency simulation TV signal, to the audio frequency mould received
Intend TV signal and carry out analog to digital conversion process, export digital audio TV signal；
First signal transform subblock 1023, for receiving the decoding of signal decoding sub-module 1021 output
Video simulation TV signal after process and the digital audio TV letter of analog to digital conversion submodule 1022 output
Number, video simulation TV signal and digital audio TV signal after the decoding process that will receive are converted to
Preset format signal exports.
Concrete, after the decoding process that the first signal transform subblock 1023 will receive respectively video screen module
Intend TV signal and digital audio TV signal is converted to preset format signal, then by two-way preset format
Signal exports after merging.
During actual enforcement, as shown in Figure 4, signal receiving module 101, specifically can be connect by CVBS
Mouth signal decoding sub-module 1021 in analog signal processing module 102 exports video simulation TV letter
Number；Exported by Audio interface analog to digital conversion submodule 1022 in analog signal processing module 102
Audio frequency simulation TV signal；
In analog signal processing module 102, signal decoding sub-module 1021, specifically can pass through RGB
(Red-Green-Blue, RGB) interface exports decoding process to the first signal transform subblock 1023
After video simulation TV signal；Analog to digital conversion submodule 1022, specifically can pass through I2S (Inter-IC
Sound, integrated circuit built-in audio bus) interface exports audio frequency to the first signal transform subblock 1023
Digital television signal；
The first signal transform subblock 1023 in analog signal processing module 102, specifically can pass through
USB interface exports preset format signal to signal output module 104.
In one particular embodiment of the present invention, digital signal processing module 103 specifically can be such as Fig. 3
Shown in, including:
Signal demodulation submodule 1031, the digital television signal after receiving down conversion process, to receiving
Down conversion process after digital television signal be demodulated process, output demodulation process after DTV letter
Number；
Secondary signal transform subblock 1032, for the demodulation of receiving signal demodulation submodule 1031 output
Digital television signal after process, the digital television signal after the demodulation process that will receive is converted to preset
Format signal exports.
During actual enforcement, as shown in Figure 4, signal receiving module 101, specifically can pass through IF
The signal demodulation in digital signal processing module 103 of (Intermediate Frequency, the intermediate frequency) interface
Submodule 1031 exports the digital television signal after down conversion process；
In digital signal processing module 103, signal demodulation submodule 1031, specifically can pass through TS
(Transport Stream transmits stream) interface exports demodulation process to secondary signal transform subblock 1032
After digital television signal；
Secondary signal transform subblock 1032 in digital signal processing module 103, specifically can pass through
USB interface exports preset format signal to signal output module 104.
Signal processing apparatus shown in Fig. 4, signal output module 104 specifically can use USB switch real
Existing.
In the signal processing apparatus shown in Fig. 4, when signal output module 104 connects analog signal processing
Module 102 and multimedia play equipment, the preset format signal that analog signal processing module 102 is exported
When output to multimedia play equipment plays out, i.e. signal output module 104 connects the first signal conversion
Submodule 1023 and multimedia play equipment, the default lattice that the first signal transform subblock 1023 is exported
When formula signal output to multimedia play equipment plays out, multimedia play equipment can switchover watching analog TV；
When signal output module 104 connects digital signal processing module 103 and multimedia play equipment, by numeral
When preset format signal output to the multimedia play equipment of signal processing module 103 output plays out,
I.e. signal output module 104 connects secondary signal transform subblock 1032 and multimedia play equipment, by
The preset format signal output of binary signal transform subblock 1032 output is broadcast to multimedia play equipment
When putting, multimedia play equipment can watch DTV.
In one particular embodiment of the present invention, as it is shown in figure 5, in analog signal processing module 102
The first signal transform subblock 1023, it is also possible to as signal receiving module 101, signal output module
104 and digital signal processing module 103, analog signal processing module 102 in signal decoding sub-module
The control module of 1021.
Now, the first signal transform subblock 1023 receives the control instruction of multimedia play equipment, based on
The control instruction of multimedia play equipment, exports following control signal:
The output control signal to signal receiving module 101, control signal receiver module 101 specifically receives
Which anolog TV signals or receive which digital television signal；
The output control signal to signal output module 104, control signal output module 104 specifically connects
Analog signal processing module 102 and multimedia play equipment, or connection digital signal processing module 103
With multimedia play equipment；
The output control signal to digital signal processing module 103, is specially and signal is demodulated submodule
The control signal of 1031, the signal demodulating process of control signal demodulation submodule 1031；
The output control signal to signal decoding sub-module 1021, control signal decoding sub-module 1021
Signal decoding process.
During actual enforcement, the first signal transform subblock 1023, specifically can pass through I2C
(Inter-Integrated Circuit, IC bus) interface output control to signal receiving module 101
Signal processed, to the control signal of digital signal processing module 103 and to signal decoding sub-module 1021
Control signal.First signal transform subblock 1023, specifically can pass through GPIO (General Purpose
Input Output, universal input exports) the interface output control signal to signal output module 104.
Below the first signal transform subblock 1023 is received the tool of the control instruction of multimedia play equipment
Body mode illustrates:
When signal output module 104 connects analog signal processing module 102 with multimedia play equipment,
First signal transform subblock 1023 can directly receive the control instruction of multimedia play equipment；
And when signal output module 104 connects digital signal processing module 103 with multimedia play equipment,
Analog signal processing module 102 does not connects with multimedia play equipment, now, and the first signal conversion submodule
Block 1023 can receive the control instruction of multimedia play equipment by digital signal processing module 103.
Now, digital signal processing module 103 is specifically as follows secondary signal transform subblock 1032, can
First to send an interrupt signal to the first signal transform subblock 1023, to notify the first signal conversion
Module 1023 prepares to receive the control instruction of multimedia play equipment, the most again to the first signal conversion submodule
Block 1023 sends the control instruction of multimedia play equipment.
During actual enforcement, digital signal processing module 103 is specifically as follows secondary signal transform subblock
1032, interrupt signal can be exported by GPIO interface to the first signal transform subblock 1023, pass through
I2C interface exports the control instruction of multimedia play equipment to the first signal transform subblock 1023.
In another specific embodiment of the present invention, as shown in Figure 6, digital signal processing module 103
In secondary signal transform subblock 1032, can be as signal receiving module 101, signal output module
104 and analog signal processing module 102, digital signal processing module 103 in signal demodulation submodule
The control module of 1031.
Now, secondary signal transform subblock 1032 receives the control instruction of multimedia play equipment, based on
The control instruction of multimedia play equipment, exports following control signal:
The output control signal to signal receiving module 101, control signal receiver module 101 specifically receives
Which anolog TV signals or receive which digital television signal；
The output control signal to signal output module 104, control signal output module 104 specifically connects
Analog signal processing module 102 and multimedia play equipment, or connection digital signal processing module 103
With multimedia play equipment；
The output control signal to analog signal processing module 102, is specially signal decoding sub-module
The control signal of 1021, the signal decoding process of control signal decoding sub-module 1021；
Export the control signal to signal demodulation submodule 1031, control signal demodulation submodule 1031
Signal decoding process.
During actual enforcement, secondary signal transform subblock 1032, specifically can pass through I2C
(Inter-Integrated Circuit, IC bus) interface output control to signal receiving module 101
Signal processed, to the control signal of analog signal processing module 102 and to signal demodulation submodule 1031
Control signal.Secondary signal transform subblock 1032, specifically can pass through GPIO (General Purpose
Input Output, universal input exports) the interface output control signal to signal output module 104.
Below secondary signal transform subblock 1032 is received the tool of the control instruction of multimedia play equipment
Body mode illustrates:
When signal output module 104 connects digital signal processing module 103 with multimedia play equipment,
Secondary signal transform subblock 1032 can directly receive the control instruction of multimedia play equipment；
And when signal output module 104 connects analog signal processing module 102 with multimedia play equipment,
Digital signal processing module 103 does not connects with multimedia play equipment, now, and secondary signal conversion submodule
Block 1032 can receive the control instruction of multimedia play equipment by analog signal processing module 102.
Now, analog signal processing module 102 is specifically as follows the first signal transform subblock 1023, can
First to send an interrupt signal to secondary signal transform subblock 1032, to notify secondary signal conversion
Module 1032 prepares to receive the control instruction of multimedia play equipment, changes submodule to secondary signal the most again
Block 1032 sends the control instruction of multimedia play equipment.
During actual enforcement, analog signal processing module 102 is specifically as follows the first signal transform subblock
1023, interrupt signal can be exported by GPIO interface to secondary signal transform subblock 1032, pass through
I2C interface exports the control instruction of multimedia play equipment to secondary signal transform subblock 1032.
It should be noted that signal processing apparatus shown in above-mentioned Fig. 3-Fig. 5 is simulated signal processing module 102
Merely illustrative with the specific implementation of digital signal processing module 103, specifically real at other of the present invention
Executing in example, analog signal processing module 102 and digital signal processing module 103 can also use other side
Formula realizes, detailed description of no longer illustrating at this.
The signal processing apparatus that the embodiment of the present invention provides, when implementing, can make similar USB flash disk
Product form, it is simple to connect various multimedia play equipment, as have display screen intelligent sound equipment,
The multimedia play equipments such as computer.
The embodiment of the present invention additionally provides a kind of multimedia play equipment, in the connection of this multimedia play equipment
State the arbitrary shown signal processing apparatus of Fig. 1-Fig. 6.This anolog TV signals processing means can be passed through
The interfaces such as USB, VGA are connected with multimedia equipment.
It is connected to the multimedia play equipment of the signal processing apparatus that the embodiment of the present invention provides, can watch
Simulated television and DTV, it is clear that the function of multimedia play equipment is extended, and then make many
The application scenarios of apparatus for media playing is extended, and improves the experience of user.
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 (17)
1. a signal processing apparatus, it is characterised in that including:
Signal receiving module, for when receiving anolog TV signals, to the anolog TV signals received
Carry out resolution process, output video simulation TV signal and audio frequency simulation TV signal；Receiving numeral electricity
During depending on signal, the digital television signal received is carried out down conversion process, the numeral after output down conversion process
TV signal；
Analog signal processing module, for receive signal receiving module output video simulation TV signal and
Audio frequency simulation TV signal, and based on the video simulation TV signal received and audio frequency simulation TV signal,
Output preset format signal；
Digital signal processing module, the numeral electricity after the down conversion process receiving signal receiving module output
Depending on signal, and based on the digital television signal after the down conversion process received, export preset format signal；
Signal output module, is used for connecting analog signal processing module and multimedia play equipment, will simulation
The preset format signal output of signal processing module output plays out to multimedia play equipment；Or,
Connection digital signal processing module and multimedia play equipment, exported by digital signal processing module presets
Format signal output plays out to multimedia play equipment.
Signal processing apparatus the most according to claim 1, it is characterised in that at described analogue signal
Reason module, specifically includes:
Signal decoding sub-module, is used for receiving video simulation TV signal, to the video simulation electricity received
It is decoded processing depending on signal, the video simulation TV signal after output decoding process；
Analog to digital conversion submodule, is used for receiving audio frequency simulation TV signal, to the audio frequency simulation electricity received
Carry out analog to digital conversion process depending on signal, export digital audio TV signal；
First signal transform subblock, regarding after the decoding process receiving the output of signal decoding sub-module
Frequently anolog TV signals and the digital audio TV signal of analog to digital conversion submodule output, the solution that will receive
Code process after video simulation TV signal and digital audio TV signal to be converted to preset format signal defeated
Go out.
Signal processing apparatus the most according to claim 1, it is characterised in that at described digital signal
Reason module, specifically includes:
Signal demodulation submodule, the digital television signal after receiving down conversion process, to the fall received
Digital television signal after frequency processes is demodulated processing, the digital television signal after output demodulation process；
Secondary signal transform subblock, the number after the demodulation process of receiving signal demodulation submodule output
Word TV signal, it is defeated that the digital television signal after the demodulation process that will receive is converted to preset format signal
Go out.
Signal processing apparatus the most according to claim 2, it is characterised in that described first signal turns
Change submodule, be additionally operable to control instruction based on multimedia play equipment, export and described signal is received mould
The control signal of block, to the control signal of described digital signal processing module, to described signal output module
Control signal and control signal to described signal decoding sub-module.
Signal processing apparatus the most according to claim 4, it is characterised in that described first signal turns
Change submodule, specifically for connecting described analog signal processing module and many matchmakers in described signal output module
During body playback equipment, directly receive the control instruction of multimedia play equipment；In described signal output module
When connecting described digital signal processing module with multimedia play equipment, by described Digital Signal Processing mould
Block receives the control instruction of multimedia play equipment.
Signal processing apparatus the most according to claim 5, it is characterised in that at described digital signal
Reason module, specifically for after described first signal transform subblock output interrupt signal, to described the
The control instruction of one signal transform subblock output multimedia play equipment.
Signal processing apparatus the most according to claim 3, it is characterised in that described secondary signal turns
Change submodule, be additionally operable to control instruction based on multimedia play equipment, export and described signal is received mould
The control signal of block, to the control signal of described analog signal processing module, to described signal output module
Control signal and to described signal demodulation submodule control signal.
Signal processing apparatus the most according to claim 7, it is characterised in that described secondary signal turns
Change submodule, specifically for connecting described digital signal processing module and many matchmakers in described signal output module
During body playback equipment, directly receive the control instruction of multimedia play equipment；In described signal output module
When connecting described analog signal processing module with multimedia play equipment, by described analog signal processing mould
Block receives the control instruction of multimedia play equipment.
Signal processing apparatus the most according to claim 8, it is characterised in that at described analogue signal
Reason module, specifically for after described secondary signal transform subblock output interrupt signal, to described the
The control instruction of binary signal transform subblock output multimedia play equipment.
Signal processing apparatus the most according to claim 1, it is characterised in that described signal receives
Module, exports video simulation TV signal especially by Composite Video Baseband Signal CVBS interface, passes through
Audio A udio interface output audio frequency simulation TV signal, after medium-frequency IF interface output down conversion process
Digital television signal；
Described analog signal processing module, exports preset format especially by general-purpose serial bus USB interface
Signal；
Described digital signal processing module, exports preset format especially by general-purpose serial bus USB interface
Signal；
Described signal output module, exports analog signal processing especially by general-purpose serial bus USB interface
The preset format signal of module output or the preset format signal of digital signal processing module output.
11. signal processing apparatus according to claim 2, it is characterised in that described signal decodes
Submodule, especially by the video simulation TV signal after RGB rgb interface output decoding process；
Described analog to digital conversion submodule, exports sound especially by integrated circuit built-in audio bus I2S interface
Frequently digital television signal.
12. signal processing apparatus according to claim 3, it is characterised in that described signal demodulates
Submodule, especially by transmitting the digital television signal after stream TS interface exports demodulation process.
13. signal processing apparatus according to claim 4, it is characterised in that described first signal
Transform subblock, especially by the IC bus I2C interface output control to described signal receiving module
Signal processed, to the control signal of described digital signal processing module and to described signal decoding sub-module
Control signal, is believed the control of described signal output module by universal input output GPIO interface output
Number.
14. signal processing apparatus according to claim 6, it is characterised in that described digital signal
Processing module, especially by universal input output GPIO interface output interrupt signal, passes through integrated circuit
The control instruction of bus I2C interface output multimedia play equipment.
15. signal processing apparatus according to claim 7, it is characterised in that described secondary signal
Transform subblock, especially by the IC bus I2C interface output control to described signal receiving module
Signal processed, to the control signal of described analog signal processing module and to described signal demodulation submodule
Control signal, is believed the control of described signal output module by universal input output GPIO interface output
Number.
16. signal processing apparatus according to claim 9, it is characterised in that described analogue signal
Processing module, especially by universal input output GPIO interface output interrupt signal, passes through integrated circuit
The control instruction of bus I2C interface output multimedia play equipment.
17. a multimedia play equipment, it is characterised in that described multimedia play equipment connects right
Require the arbitrary described signal processing apparatus of 1-16.
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| CN201510811095.XA CN105898454A (en) | 2015-11-20 | 2015-11-20 | Signal processing device and multimedia playback device |
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|---|---|---|---|
| CN201510811095.XA CN105898454A (en) | 2015-11-20 | 2015-11-20 | Signal processing device and multimedia playback device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108572602A (en) * | 2018-07-23 | 2018-09-25 | 上海海得控制系统股份有限公司 | A kind of control device of tablet press machine |
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