CN106210880A - The attachment means of interface duplex, system and method in a kind of Set Top Box - Google Patents
The attachment means of interface duplex, system and method in a kind of Set Top Box Download PDFInfo
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- CN106210880A CN106210880A CN201510225274.5A CN201510225274A CN106210880A CN 106210880 A CN106210880 A CN 106210880A CN 201510225274 A CN201510225274 A CN 201510225274A CN 106210880 A CN106210880 A CN 106210880A
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- signal
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- 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)
- Time-Division Multiplex Systems (AREA)
Abstract
The present invention provides the attachment means of interface duplex, system and method in a kind of Set Top Box；Described method, including: close video signal CVBS signalling contact, left channel signals contact, right-channel signals contact and signal ground contact；Wherein: the CVBS signalling contact of described device, left channel signals contact, right-channel signals contact and signal ground contact are connected with CVBS signalling contact, left channel signals contact, right-channel signals contact and the signal ground contact of analog audio-video AV interface successively；And, the CVBS signalling contact of described device is connected with S/PDIF signalling contact and the signal ground contact of DAB S/PDIF interface successively with signal ground contact, and the left channel signals contact of described device is different with the level that AV interface is connected with the left channel signals contact of described device and right-channel signals contact from the level of the position that S/PDIF interface is connected with right-channel signals contact.
Description
Technical field
The present invention relates to signal processing field, particularly relate to the attachment means of interface duplex in a kind of Set Top Box,
System and method.
Background technology
The Intelligent set top box function of existing market gets more and more so that the interface of Set Top Box is along with the increasing of function
Also get more and more by force.Owing to Set Top Box dimensional structure is very limited, therefore can be by being not frequently used
Interface crop or with other interface duplex to control the quantity of interface.Need with other interface duplex
The problem solving the switching of multiple interface, in the prior art generally way be carry out on television interface distant
Control operation realizes.Most typical be exactly on market a lot of Set Top Boxes at S/PDIF (Sony/Philips Digital
Interconnect Format, DAB) interface and AV (Audio and Video, analog audio-video)
Interface uses multiplexing way, and the switching of both interface duplexes is by arranging interface setting options on interface
Select to arrange.
In actual applications, after how carrying out multiplexing on S/PDIF interface and AV interface, it is achieved control
Identification and switching automatically between interface are problem demanding prompt solutions.
Summary of the invention
The present invention provides the attachment means of interface duplex, system and method in a kind of Set Top Box, to be solved
Technical problem is how to realize automatically identifying and switching of multiplex interface.
For solving above-mentioned technical problem, the technical scheme is that
The attachment means of interface duplex in a kind of Set Top Box, including: composite video signal CVBS signal
Contact, left channel signals contact, right-channel signals contact and signal ground contact；Wherein:
The CVBS signalling contact of described device, left channel signals contact, right-channel signals contact and signal
Contact, ground successively with the CVBS signalling contact of analog audio-video AV interface, left channel signals contact, the right side
Sound channel signal contact is connected with signal ground contact；And,
The CVBS signalling contact of described device and signal ground contact successively with DAB S/PDIF interface
S/PDIF signalling contact be connected with signal ground contact, and the left channel signals contact of described device and the right side
The level of the position that sound channel signal contact is connected with S/PDIF interface touches with the left channel signals of described device
Point is different from the level that AV interface is connected with right-channel signals contact.
Wherein, the left channel signals contact of described S/PDIF cable connector and described device and right-channel signals
At least ground connection at one in the position of contact.
The connection system of interface duplex in a kind of Set Top Box, including:
Multiplex switch device, is connected with AV interface or S/PDIF interface；
Apparatus as described above；
Detection device, for detecting L channel and/or the letter of R channel of the attachment means of described interface duplex
Number whether it is earth signal, obtains testing result；
Processor, for according to described testing result, exports control signal；
Output device, for according to described control signal, exports the class signal corresponding with described control signal
The signal of type.
Wherein, described multiplex switch device is alternative multiplex switch.
Wherein, described processor specifically for:
When signal L channel and/or R channel being detected is not earth signal, output is used for controlling output dress
Put the control signal of output CVBS signal, when signal L channel and/or R channel being detected is earth signal
Time, output is for controlling the control signal of output device output S/PDIF signal.
The method of attachment of interface duplex in a kind of Set Top Box, including:
After multiplex switch device connects AV interface or S/PDIF interface, detect devices described above
L channel and/or the signal whether ground connection of R channel, obtain testing result；
According to described testing result, export control signal；
According to described control signal, export the signal of the signal type corresponding with described control signal.
Wherein, described multiplex switch device is alternative multiplex switch.
Wherein, described according to described testing result, export control signal, including:
When signal L channel and/or R channel being detected is not earth signal, output is used for controlling output dress
Put the control signal of output CVBS signal, when signal L channel and/or R channel being detected is earth signal
Time, output is for controlling the control signal of output device output S/PDIF signal.
Embodiment S/PDIF interface that the present invention provides and the multiplex interface pair of AV interface and multiplex interface phase
The cable that should design identifies automatically, and automatically exports corresponding signal according to the type inserting cable,
Thus realize automatic switching function.
Accompanying drawing explanation
AV cable connector that Fig. 1 provides for the present invention and the schematic diagram of S/PDIF cable connector；
AV cable connector that Fig. 2 provides for the present invention and another schematic diagram of S/PDIF cable connector；
The structure chart of the connection system of interface duplex in the Set Top Box that Fig. 3 provides for the present invention；
Signal when Fig. 4 is to insert AV cable in system shown in Figure 3 moves towards figure；
Fig. 5 is that the signal inserting S/PDIF cable in system shown in Figure 3 moves towards figure；
The circuit diagram of the detection device that Fig. 6 provides for the present invention；
Another circuit diagram of the detection device that Fig. 7 provides for the present invention；
The flow chart of the method for attachment of interface duplex in the Set Top Box that Fig. 8 provides for the present invention.
The principle flow chart of the method for attachment of interface duplex in the Set Top Box that Fig. 9 provides for the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing and concrete
The present invention is described in further detail for embodiment.It should be noted that in the case of not conflicting,
Embodiment in the application and the feature in embodiment can mutual combination in any.
Before the embodiment providing the present invention explains, the most first to AV cable and S/PDIF cable
Joint illustrates.AV cable connector that Fig. 1 provides for the present invention and the signal of S/PDIF cable connector
Figure.Four signalling contacts are included, according to from front to back as the attachment means being connected with above-mentioned two joint
Be L channel, R channel respectively, (Composite Video Broadcast Signal is combined and regards CVBS
Frequently signal),.
AV cable connector that Fig. 2 provides for the present invention and another schematic diagram of S/PDIF cable connector.Press
According to order from front to back, in the present invention line sequence of attachment means be CVBS, R channel, L channel,
Ground.
On the basis of above-mentioned joint and above-mentioned interface, the present invention provides interface duplex in a kind of Set Top Box
Attachment means, including: CVBS signalling contact, left channel signals contact, right-channel signals contact and letter
Number ground contact；Wherein:
The CVBS signalling contact of described device, left channel signals contact, right-channel signals contact and signal
Contact, ground is touched with the CVBS signalling contact of AV interface, left channel signals contact, right-channel signals successively
Point is connected with signal ground contact；And, the CVBS signalling contact of described device and signal ground contact are successively
It is connected with S/PDIF signalling contact and the signal ground contact of S/PDIF interface, and the L channel of described device
The level of the position that signalling contact is connected with S/PDIF interface with right-channel signals contact and described device
Left channel signals contact is different from the level that AV interface is connected with right-channel signals contact.
The attachment means that the present invention provides, when being connected with AV interface and S/PDIF interface, by with upper
Level value when stating two interfaces left channel interface at this device of connection with right channel interface is different, thus
Realize the identification to above-mentioned two interface, thus realize the automatic identification of interface when interface duplex.
Specifically, the present invention provides the attachment means of interface duplex in a kind of Set Top Box, and this device is used for
The multiplexing of S/PDIF and the AV interface on Set Top Box, and exported by output female seat, wherein said output
Female seat includes CVBS signalling contact, left channel signals contact, right-channel signals contact and signal ground contact,
Wherein:
The CVBS signalling contact of described output female seat respectively with the CVBS signalling contact of AV cable connector
It is connected with the S/PDIF signalling contact of S/PDIF cable connector；
The signal ground contact of described output female seat respectively with earth signal contact and the S/PDIF of AV cable connector
The earth signal contact of cable connector is connected；And,
Wherein, the left and right sound track signals of AV cable connector and left channel signals contact and the right side exporting female seat
Sound channel signal contact is connected one to one；Described S/PDIF cable connector and the L channel exporting female seat
At least ground connection at one in the position of signalling contact and right-channel signals contact.
As seen from the above, above-mentioned two interface carries out multiplexing by either-or switch, by same mother
Seat output, wherein output female seat uses the 4 segmentation earphone sockets that industry is general, realizes distinct interface
Differentiation.
The structure chart of the connection system of interface duplex in the Set Top Box that Fig. 3 provides for the present invention.Shown in Fig. 2
Device includes:
Multiplex switch device, is connected with AV interface or S/PDIF interface；
The attachment means of interface duplex；
Detection device, for detecting L channel and/or the letter of R channel of the attachment means of described interface duplex
Number whether ground connection, obtain testing result；
Processor, for according to described testing result, exports control signal；
Output device, for according to described control signal, exports the class signal corresponding with described control signal
The signal of type.
The system that the present invention provides, connects AV interface and S/PDIF interface by multiplex switch device, connects
The difference that the attachment means of mouth multiplexing connects by utilizing inside, the interface that convenient identification is currently used, then
Detect whether ground connection by detection device, identify currently used interface, then by processor according to inspection
Survey result output control signal, then the signal by output device output corresponding types.
Wherein, described multiplex switch device is alternative multiplex switch.
In like manner, the switch realizing multiplexing function in prior art uses too, and here is omitted.
Wherein, described processor specifically for:
When signal L channel and/or R channel being detected is not earth signal, output is used for controlling output dress
Put the control signal of output CVBS signal, when signal L channel and/or R channel being detected is earth signal
Time, output is for controlling the control signal of output device output S/PDIF signal.
Signal when Fig. 4 is to insert AV cable in system shown in Figure 3 moves towards figure.As shown in Figure 4, when
The when that the outside cable inserted being AV cable, testing circuit detects that AUDIO_R signal is not ground
Signal, testing circuit can export 0 level signal to CPU, then controls either-or switch and selects CVBS
Passage, it is achieved that automatically identifying and switching of Set Top Box.
Fig. 5 is that the signal inserting S/PDIF cable in system shown in Figure 3 moves towards figure.As it is shown in figure 5, work as
The when that the outside cable inserted being S/PDIF cable, testing circuit detects that AUDIO_R signal is ground
Signal, testing circuit can export 1 level signal to CPU, then controls either-or switch and selects S/PDIF
Passage, it is achieved Set Top Box automatically identifies and switches.
The circuit diagram of the detection device that Fig. 6 provides for the present invention.In circuit shown in Fig. 6, utilize audion
On or off thus to export high or low level: VT1 be a common audion, work as input signal
The when that AUDIO_R being R channel (non-earth signal), by adjust R1 and R2 resistance so that
This transistor base-emitter stage positively biased (pressure reduction is more than PN junction conducting voltage), now base emitter
The PN junction conducting of pole, base voltage is pulled low, and base-collector junction is reverse-biased, now triode ON,
CPU_GPIO is pulled down to low level.When input signal AUDIO_R is earth signal, this audion
Base-emitter reverse bias, audion ends, and CPU_GPIO is output as high level.
Another circuit diagram of the detection device that Fig. 7 provides for the present invention.In circuit shown in Fig. 7, by three
The on or off of pole pipe realizes, and the input according to AUDIO_R is different, thus cause base stage-
The PN positively biased of emitter stage or reverse-biased so that triode ON or cut-off so that CPU_GPIO's is defeated
Go out high or low, be sent to CPU in this, as detection information.
The flow chart of the method for attachment of interface duplex in the Set Top Box that Fig. 8 provides for the present invention.In conjunction with Fig. 1
To the content shown in 7, described method includes:
Step 801, on multiplex switch device, connect AV interface or S/PDIF interface after, detection connects
The L channel of device and/or the signal of R channel whether ground connection, obtains testing result；
Step 802, according to described testing result, export control signal；
Step 803, according to described control signal, export the signal type corresponding with described control signal
Signal.
Wherein, described multiplex switch device is alternative multiplex switch.
The principle flow chart of the method for attachment of interface duplex in the Set Top Box that Fig. 9 provides for the present invention.Fig. 9
In shown flow process, described according to described testing result, export control signal, including:
When signal L channel and/or R channel being detected is not earth signal, output is used for controlling output dress
Put the control signal of output CVBS signal, when signal L channel and/or R channel being detected is earth signal
Time, output is for controlling the control signal of output device output S/PDIF signal.
Concrete, Set Top Box internal detection circuitry at multiplex interface female seat L channel or R channel letter
Number detect, detect this signal whether ground connection, and send detection information to Set Top Box master cpu,
Alternative multiplex switch is controlled by the detection information that CPU is provided according to testing circuit: when not detecting
During to this signal ground, CPU controls multiplex switch output CVBS signal, when ground connection being detected, CPU
Control multiplex switch output S/PDIF signal.
By above method, the cable inserted can be identified by Set Top Box automatically, and according to insertion
The type of cable exports corresponding signal automatically, thus realizes automatic switching function.
One of ordinary skill in the art will appreciate that all or part of step of above-described embodiment can make to use tricks
Calculation machine program circuit realizes, and described computer program can be stored in a computer-readable recording medium,
Described computer program performs (such as system, unit, device etc.) on corresponding hardware platform,
Upon execution, including one or a combination set of the step of embodiment of the method.
Alternatively, all or part of step of above-described embodiment can also use integrated circuit to realize, this
A little steps can be fabricated to integrated circuit modules one by one respectively, or by the multiple modules in them or
Step is fabricated to single integrated circuit module and realizes.So, the present invention is not restricted to any specific hard
Part and software combine.
Each device/functional module/functional unit in above-described embodiment can use general calculating device
Realizing, they can concentrate on single calculating device, it is also possible to is distributed in multiple calculating device institutes group
On the network become.
Each device/functional module/functional unit in above-described embodiment realizes with the form of software function module
And during as independent production marketing or use, can be stored in a computer read/write memory medium.
Computer read/write memory medium mentioned above can be read only memory, disk or CD etc..
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to
In this, any those familiar with the art, can be easily in the technical scope that the invention discloses
Expect change or replace, all should contain within protection scope of the present invention.Therefore, the protection of the present invention
Scope should be as the criterion with the protection domain described in claim.
Claims (8)
1. the attachment means of interface duplex in a Set Top Box, it is characterised in that including: composite video
Signal CVBS signalling contact, left channel signals contact, right-channel signals contact and signal ground contact；Its
In:
The CVBS signalling contact of described device, left channel signals contact, right-channel signals contact and signal
Contact, ground successively with the CVBS signalling contact of analog audio-video AV interface, left channel signals contact, the right side
Sound channel signal contact is connected with signal ground contact；And,
The CVBS signalling contact of described device and signal ground contact successively with DAB S/PDIF interface
S/PDIF signalling contact be connected with signal ground contact, and the left channel signals contact of described device and the right side
The level of the position that sound channel signal contact is connected with S/PDIF interface touches with the left channel signals of described device
Point is different from the level that AV interface is connected with right-channel signals contact.
Device the most according to claim 1, it is characterised in that described S/PDIF cable connector with
At least ground connection at one in the left channel signals contact of described device and the position of right-channel signals contact.
3. the connection system of interface duplex in a Set Top Box, it is characterised in that including:
Multiplex switch device, is connected with AV interface or S/PDIF interface；
Device as claimed in claim 1 or 2；
Detection device, for detecting L channel and/or the letter of R channel of the attachment means of described interface duplex
Number whether it is earth signal, obtains testing result；
Processor, for according to described testing result, exports control signal；
Output device, for according to described control signal, exports the class signal corresponding with described control signal
The signal of type.
System the most according to claim 3, it is characterised in that described multiplex switch device is two choosings
One multiplex switch.
5. according to the system described in claim 3 or 4, it is characterised in that described processor specifically for:
When signal L channel and/or R channel being detected is not earth signal, output is used for controlling output dress
Put the control signal of output CVBS signal, when signal L channel and/or R channel being detected is earth signal
Time, output is for controlling the control signal of output device output S/PDIF signal.
6. the method for attachment of interface duplex in a Set Top Box, it is characterised in that including:
After connecting AV interface or S/PDIF interface on multiplex switch device, detection is such as claim 1
Or the signal of the L channel of the device described in 2 and/or R channel whether ground connection, obtain testing result；
According to described testing result, export control signal；
According to described control signal, export the signal of the signal type corresponding with described control signal.
Method the most according to claim 6, it is characterised in that described multiplex switch device is two choosings
One multiplex switch.
8. according to the method described in claim 6 or 7, it is characterised in that described according to described detection knot
Really, export control signal, including:
When signal L channel and/or R channel being detected is not earth signal, output is used for controlling output dress
Put the control signal of output CVBS signal, when signal L channel and/or R channel being detected is earth signal
Time, output is for controlling the control signal of output device output S/PDIF signal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510225274.5A CN106210880A (en) | 2015-05-05 | 2015-05-05 | The attachment means of interface duplex, system and method in a kind of Set Top Box |
| PCT/CN2016/080766 WO2016177302A1 (en) | 2015-05-05 | 2016-04-29 | Connecting device, system and method for interface multiplexing in set top box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510225274.5A CN106210880A (en) | 2015-05-05 | 2015-05-05 | The attachment means of interface duplex, system and method in a kind of Set Top Box |
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| Publication Number | Publication Date |
|---|---|
| CN106210880A true CN106210880A (en) | 2016-12-07 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510225274.5A Pending CN106210880A (en) | 2015-05-05 | 2015-05-05 | The attachment means of interface duplex, system and method in a kind of Set Top Box |
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| Country | Link |
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| CN (1) | CN106210880A (en) |
| WO (1) | WO2016177302A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108259953A (en) * | 2018-03-06 | 2018-07-06 | 深圳康佳信息网络有限公司 | Interface multiplexing circuit, method for multiplexing interface and the set-top box of set-top box |
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| CN201047942Y (en) * | 2007-04-20 | 2008-04-16 | 上海岛谷科技有限公司 | Device of supporting multiple audio working modes |
| US20080285776A1 (en) * | 2007-05-15 | 2008-11-20 | Fortemedia, Inc. | Audio interface device and method |
| JP4991817B2 (en) * | 2009-10-05 | 2012-08-01 | シャープ株式会社 | Software update system, display unit, and software update method |
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| WO2016177302A1 (en) | 2016-11-10 |
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Application publication date: 20161207 |