CN103686033A - Signal input control system and method as well as video device of signal input control system - Google Patents
Signal input control system and method as well as video device of signal input control system Download PDFInfo
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- CN103686033A CN103686033A CN201210319281.8A CN201210319281A CN103686033A CN 103686033 A CN103686033 A CN 103686033A CN 201210319281 A CN201210319281 A CN 201210319281A CN 103686033 A CN103686033 A CN 103686033A
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Abstract
The invention relates to a signal input control system and method as well as a video device of the signal input control. The method is suitable for a control device to control signal input of the video device through a high-definition multimedia interface and comprises the following steps: the control device provides process information and control instructions, the video device detects the control instructions, and a display data passage is used for receiving the process information. According to the control instructions, the video device controls a switching unit to transfer the process information to an extension display capability recognizing data storage device or a processor.
Description
Technical field
The present invention relates to a kind of signal input control system and method and AV device thereof, relate in particular to a kind of signal input control system and method and AV device thereof that utilizes HDMI (High Definition Multimedia Interface) signal transmission.
Background technology
With prior art, high image quality definition multimedia interface (High Definition Multimedia Interface, HDMI) be that a kind of totally digitilized image and audio frequency transmit interface, can transmit audio signal and signal of video signal without compression, owing to can utilize same cable to transmit audio frequency and signal of video signal simultaneously, system is installed significantly and simplify.And high image quality definition multimedia interface is mainly used in electronics or the AV devices such as multimedia player, PC, holder for TV playing, integrated amplifier, digital sound, television set.Use the AV device of high image quality definition multimedia interface joint, there is the transmission only specialized in and extend display capabilities identification data (Extended Display Identification Data, EDID) DDC (Display Data Channel, DDC).Yet, detection before system manufacturer wish is carried out fault eliminating (Debug), device code renewal (Code upgrade), maintenance of equipment or dispatched from the factory, all need other circuit path of additional designs to carry out transfer control instruction, will cause the upper inconvenience of operation or increase system cost.
Summary of the invention
The present invention proposes a kind of signal input control system, is applicable to a HDMI (High Definition Multimedia Interface), and this system comprises: a control device and an AV device.Wherein this control device provides process information and control command.AV device is connected to control device by this HDMI (High Definition Multimedia Interface), and this AV device comprises: switch unit, extension display capabilities identification data memory, processor and testing circuit.Wherein, switch unit is by a DDC reception & disposal information, and testing circuit is the control command of detection control apparatus, according to this control command, controls the connection mode of switch unit in AV device.Connection mode is divided into general mode and AD HOC, and wherein general mode is for making process information be sent to and be extended display capabilities identification data memory by switch unit, and AD HOC is for making process information be sent to processor by switch unit.
In one embodiment of this invention, above-mentioned control device comprises: a processing unit and a control circuit.Wherein, processing unit provides process information, and this processes information exchange and crosses the switch unit that DDC is sent to AV device.Control circuit provides control command, and wherein, control command is a specific voltage, and this specific voltage is adjustable voltage, and according to the numerical value of this specific voltage, controlling switch unit is that process information is sent to and extends display capabilities identification data memory or processor.
In one embodiment of this invention, above-mentioned AV device also comprises a testing circuit.The effectiveness line (Utility Line) that this testing circuit has by HDMI (High Definition Multimedia Interface), the slotting detection line (HPD Line) of a heat or the First Five-Year Plan voltaism line of force (+5V Power Line) are connected with control circuit, detect after specific voltage, according to specific voltage, testing circuit changes the connection mode of switch unit, and this connection mode determines that switch unit is that process information is sent to and extends display capabilities identification data memory or processor.
In one embodiment of this invention, when specific voltage is from five voltaism line of force input detecting circuits, and when specific voltage is 5 volts, testing circuit is controlled switch unit process information is sent to and extends display capabilities identification data memory, when specific voltage is from five voltaism line of force input detecting circuits, and when specific voltage is 0 volt, testing circuit is controlled switch unit process information is sent to processor, when specific voltage is to insert detection line input detecting circuit from heat, and when specific voltage is 5 volts, testing circuit is controlled switch unit process information is sent to and extends display capabilities identification data memory, when specific voltage is to insert detection line input detecting circuit from heat, and when specific voltage is 0 volt, testing circuit is controlled switch unit process information is sent to processor, when specific voltage is from effectiveness line input detecting circuit, and when specific voltage is 0 volt, testing circuit is controlled switch unit process information is sent to and extends display capabilities identification data memory, when specific voltage is from effectiveness line input detecting circuit, and specific voltage is 9, 14, in the time of 21 volts, testing circuit is controlled switch unit process information is sent to processor.
The present invention proposes a kind of signal input control method, is applicable to the signal that control device controls AV device by HDMI (High Definition Multimedia Interface) and inputs.The method comprises the following steps: that control device provides process information and control command; The control command of AV device detection control apparatus; Switch unit in AV device is by DDC reception & disposal information; According to control command, AV device is controlled the connection mode of switch unit, this connection mode is divided into general mode and AD HOC, wherein, general mode is to make this processing information exchange cross switch unit to be sent to the extension display capabilities identification data memory in AV device, and AD HOC is to make this processing information exchange cross switch unit to be sent to the processor in AV device.
The present invention proposes a kind of AV device, be applicable to utilize a HDMI (High Definition Multimedia Interface), the process information that reception is provided by control device and control command, this AV device comprises: switch unit, extension display capabilities identification data memory, processor and testing circuit.Wherein, switch unit is by a DDC reception & disposal information, testing circuit is the control command of detection control apparatus, according to control command, the connection mode of controlling switch unit in AV device, connection mode is divided into general mode and AD HOC, wherein, general mode is for making process information be sent to and be extended display capabilities identification data memory by switch unit, and AD HOC is for making process information be sent to processor by switch unit.
Based on above-mentioned, the invention provides a kind of signal input control system and method and AV device thereof, communication framework between control device and AV device, the DDC of transmission extension display capabilities identifying information, the further required process informations such as low speed periphery joint agreement instruction of transmission system design will be specialized in existing HDMI (High Definition Multimedia Interface).
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.
Accompanying drawing explanation
Fig. 1 is the functional block diagram according to a kind of signal input control system of the embodiment of the present invention.
Fig. 2 is the flow chart according to a kind of signal input control method of the embodiment of the present invention.
Fig. 3 A～Fig. 3 C is to switch the corresponding form of connection mode according to the different specific voltages of the input of the embodiment of the present invention.
Reference numeral:
110: control device
120: processing unit
122: DDC
130: control circuit
132: effectiveness line
134: heat is inserted detection line
136: five voltaism line of forces
140: AV device
150: HDMI (High Definition Multimedia Interface)
160: switch unit
162: extend display capabilities identification data memory
164: processor
170: testing circuit
180: high-definition multimedia interface receiver
182,184: transition minimized differential signaling channel
186: transition minimized differential signaling sequential channel
190: consumer electronics control unit
S210～S270: signal input control method process step
Embodiment
Fig. 1 is the functional block diagram according to a kind of signal input control system of the embodiment of the present invention, and this system is applicable to do signal by HDMI (High Definition Multimedia Interface) and transmits.This signal input control system comprises control device 110, AV device 140, and control device 110 utilizes HDMI (High Definition Multimedia Interface) (High Definition Multimedia Interface, HDMI) 150 to be connected with AV device 140.Wherein control device 110 comprises processing unit 120 and control circuit 130.AV device 140 comprises switch unit 160, extends display capabilities identification data (Extended Display Identification Data, EDID) memory 162, processor 164, testing circuit 170, be all coupled to switch unit 160 and extend display capabilities identification data memory 162, processor 164 and testing circuit 170.
Wherein, the processing unit 120 in control device 110 provides process information, and this processing information exchange is crossed DDC (Data Display Channel, DDC) 122 and is sent to the switch unit 160 of AV device 140.Control circuit 130 provides control command, and this control command is a specific voltage, and this specific voltage is adjustable voltage.According to the numerical value of this specific voltage, controlling switch unit 160 is that process information is sent to and extends display capabilities identification data memory 162 or processor 164.
140 of AV devices are that slotting detection line (Hot Plug Detection Line, HPD Line) the 134 or five voltaism line of forces (+5V Power Line) 136 of effectiveness line (Utility Line) 132, heat of utilizing testing circuit 170 to have by HDMI (High Definition Multimedia Interface) 150 are connected with control circuit 130.Testing circuit 170 detects after specific voltage, according to this specific voltage, testing circuit 170 changes the connection mode of switch unit 160, and this connection mode determines that switch unit 160 is that process information is sent to and extends display capabilities identification data memory 162 or processor 164.
In AV device 140 inside, also comprise high-definition multimedia interface receiver 180 and consumer electronics control (Consumer Electronics Control, CEC) unit 190.By a plurality of transition minimized differential signalings (Transition Minimized Differential Signaling, TMDS) channel 182,184 and transition minimized differential signaling sequential channel 186, external audio-visual frequency source signal transmits shadow audio signal to high-definition multimedia interface receiver 180.Consumer electronics control unit 190 is single line, two-way interface, and mainly in addition customized design according to demand, to allow user can be convenient to control the every electronic installation being connected with HDMI (High Definition Multimedia Interface) 150.
Fig. 2 is the flow chart according to a kind of signal input control method of the embodiment of the present invention, referring to Fig. 1, Fig. 2.The processing unit 120 of control device 110 provides process information and control circuit 130 that control command (step 210) is provided, and process information is for controlling the running of extending display capabilities identification data memory 162 and processor 164.The control command (step 220) that the control circuit 130 of testing circuit 170 detection control apparatuss 110 of AV device 140 provides, control command is sayed as above-mentioned, be a specific voltage, testing circuit 170 inserts detection line 134 by effectiveness line 132, heat or the five voltaism line of forces 136 detect the specific voltage that control circuit 130 provides.
Fig. 3 A～Fig. 3 C is to switch the corresponding form of connection mode, please separately with reference to Fig. 3 A～Fig. 3 C according to the different specific voltages of the input of the embodiment of the present invention.As shown in Figure 3A, when the voltage of control circuit 130 by the five voltaism line of force 136 input detecting circuits 170 is 5 volts, internal circuit design by testing circuit 170, pin S1, pin S0 that testing circuit 170 is controlled switch unit 160 are conducting (ON) pattern, with the digital circuit method for expressing of habitually practising, are preset as state " 1 ".When the voltage by the five voltaism line of force 136 input detecting circuits 170 is 0 volt, pin S 1, pin S0 that testing circuit 170 is controlled switch unit 160 are (OFF) pattern that opens circuit, and are preset as state " 0 ".Now, systemic presupposition one parameter N, according to the conducting of pin S1 and pin S0 or open circuit, and (substrate of S1 is 2 to utilize binary bit to turn the decimal method that counts
1, the substrate of S0 is 2
0), the parameter N calculating when input voltage is 5 volts is 3, the connection mode of corresponding conversion switch unit 160 is general mode.Parameter N when input voltage is 5 volts is 5, and the connection mode of corresponding conversion switch unit 160 is AD HOC.
In like manner, as shown in Figure 3 B, when the voltage of inserting detection line 134 input detecting circuits 170 by heat when control circuit 130 is 5 volts, by the internal circuit design of testing circuit 170, pin S1, pin S0 that testing circuit 170 is controlled switch units 160 are conduction mode.When inserting the voltage of detection line 134 input detecting circuits 170 by heat and be 0 volt, pin S1, pin S0 that testing circuit 170 is controlled switch units 160 are the pattern that opens circuit.Now, utilize above-mentioned operation method, the parameter N calculating when input voltage is 5 volts is 3, and the connection mode of corresponding conversion switch unit 160 is general mode.Parameter N when input voltage is 0 volt is 0, and the connection mode of corresponding conversion switch unit 160 is AD HOC.
In addition, the carrying voltage range of effectiveness line 132 is larger, therefore has more variation.As shown in Figure 3 C, when the voltage of control circuit 130 by effectiveness line 132 input detecting circuits 170 is 0 volt, internal circuit design by testing circuit 170, pin S1, pin S0 that testing circuit 170 is controlled switch unit 160 are conduction mode, the parameter N calculating when input voltage is 0 volt is 3, and the connection mode of corresponding conversion switch unit 160 is general mode.When input voltage is 9 volts, the pin S1 that testing circuit 170 is controlled switch units 160 for the pattern that opens circuit, pin S0 be conduction mode, the parameter N calculating when input voltage is 9 volts is 1, and the connection mode of corresponding conversion switch unit 160 is the first AD HOC.When input voltage is 14 volts, the pin S1 that testing circuit 170 is controlled switch units 160 for the pattern that opens circuit, pin S0 be the pattern that opens circuit, the parameter N calculating when input voltage is 14 volts is 0, and the connection mode of corresponding conversion switch unit 160 is the second AD HOC.When input voltage is 21 volts, the pin S1 that testing circuit 170 is controlled switch unit 160 is that conduction mode, pin S0 are the pattern that opens circuit, the parameter N calculating when input voltage is 21 volts is 2, and the connection mode of corresponding conversion switch unit 160 is the 3rd AD HOC.
Through above-mentioned judgement flow process, when the connection mode of judgement switch unit 160 is general mode, process information is sent to extension display capabilities identification data memory 162 (steps 260) in AV device by switch unit 160.When the connection mode of judgement switch unit 160 is AD HOC, process information is sent to the processor 164 (step 270) in AV device by switch unit 160.Wherein, the part of effectiveness line 132, its a plurality of input voltages have the variation of multiple AD HOC.The first AD HOC, the second AD HOC, the 3rd AD HOC can be according to system manufacturer demand, and the processor 164 that is defined as respectively 120 pairs of AV devices 140 of processing unit of control device 110 provides dissimilar process information.For instance, various AD HOC correspond to respectively debug, detect different hardware devices or software program.
In sum, the invention provides a kind of signal input control system and method and AV device thereof, communication framework between control device and AV device, will in existing HDMI (High Definition Multimedia Interface), specialize in transmission extend the DDC of display capabilities identifying information, the further process information of required low speed periphery joint agreement instruction of transmission system design etc.Simultaneously, also utilize effectiveness line, the five voltaism line of forces or heat in HDMI (High Definition Multimedia Interface) to insert detection line transfer control instruction, to control process information, by switch unit, be sent to the extension display capabilities identification data memory of AV device, or by this switch unit, be sent to the processor of AV device.
Although the present invention discloses as above with embodiment, so it is not in order to limit the present invention, and any person of an ordinary skill in the technical field, when doing a little change and retouching, and does not depart from the spirit and scope of the present invention.
Claims (18)
1. a signal input control system, is applicable to a HDMI (High Definition Multimedia Interface), and this system comprises:
One control device, provides a process information and a control command; And
One AV device, is connected to this control device by this HDMI (High Definition Multimedia Interface), and this AV device comprises:
One switch unit, receives this process information by a DDC;
One extends display capabilities identification data memory;
One processor; And
One testing circuit, detect this control command of this control device, according to this control command, control a connection mode of this switch unit in this AV device, this connection mode is divided into a general mode and an AD HOC, wherein this general mode is for making this process information be sent to this extension display capabilities identification data memory by this switch unit, and this AD HOC is for making this process information be sent to this processor by this switch unit.
2. signal input control system according to claim 1, wherein this control device comprises:
One processing unit, provides this process information, and this process information is sent to this switch unit of this AV device by this DDC; And
One control circuit, this control command is provided, and this control command is a specific voltage, and this specific voltage is adjustable voltage, according to the numerical value of this specific voltage, it is that this process information is sent to this extension display capabilities identification data memory or this processor that this testing circuit is controlled this switch unit.
3. signal input control system according to claim 2, wherein this AV device also comprises an effectiveness line that this testing circuit has by this HDMI (High Definition Multimedia Interface), a heat is inserted detection line or the First Five-Year Plan voltaism line of force, and at least one is connected with this control circuit, detect after this specific voltage, according to this specific voltage, this testing circuit changes this connection mode of this switch unit, and this connection mode determines that this switch unit is that this process information is sent to this extension display capabilities identification data memory or this processor.
4. signal input control system according to claim 3, wherein, when this specific voltage is to input this testing circuit from this five voltaisms line of force, and when this specific voltage is 5 volts, this testing circuit is controlled this switch unit this process information is sent to this extension display capabilities identification data memory, when this specific voltage is to input this testing circuit from this five voltaisms line of force, and when this specific voltage is 0 volt, this testing circuit is controlled this switch unit this process information is sent to this processor.
5. signal input control system according to claim 3, wherein, when this specific voltage is to insert detection line from this heat to input this testing circuit, and when this specific voltage is 5 volts, this testing circuit is controlled this switch unit this process information is sent to this extension display capabilities identification data memory, when this specific voltage is to insert detection line from this heat to input this testing circuit, and this specific voltage is while being 0 volt, and this testing circuit is controlled this switch unit this process information is sent to this processor.
6. signal input control system according to claim 3, wherein, when this specific voltage is to input this testing circuit from this effectiveness line, and when this specific voltage is 0 volt, this testing circuit is controlled this switch unit this process information is sent to this extension display capabilities identification data memory, when this specific voltage is to input this testing circuit from this effectiveness line, and this specific voltage is while being 9,14,21 volts, and this testing circuit is controlled this switch unit this process information is sent to this processor.
7. a signal input control method, is applicable to the signal that a control device controls an AV device by a HDMI (High Definition Multimedia Interface) and inputs, and the method comprises:
This control device provides a process information and a control command;
This AV device detects this control command of this control device;
A switch unit in this AV device receives this process information by a DDC; And
According to this control command, this AV device is controlled a connection mode of this switch unit, this connection mode is divided into a general mode and an AD HOC, wherein this general mode is for making this process information be sent to an extension display capabilities identification data memory in this AV device by this switch unit, and this AD HOC is for making this process information be sent to a processor in this AV device by this switch unit.
8. signal input control method according to claim 7, also comprises:
The processing unit of this process information in this control device provides, and this process information is sent to this switch unit of this AV device by this DDC; And
This control command is provided by a control circuit of this control device, this control command is a specific voltage, this specific voltage is adjustable voltage, according to the numerical value of this specific voltage, controlling this switch unit is that this process information is sent to this extension display capabilities identification data memory or this processor.
9. signal input control method according to claim 8, also comprises:
At least one of the effectiveness line having by this HDMI (High Definition Multimedia Interface), the slotting detection line of a heat or the First Five-Year Plan voltaism line of force is connected to this control circuit one testing circuit of this AV device; And
This testing circuit detects after this specific voltage, according to this specific voltage, this testing circuit changes this connection mode of this switch unit, and wherein this connection mode determines that this switch unit is that this process information is sent to this extension display capabilities identification data memory or this processor.
10. signal input control method according to claim 9, also comprises:
When this specific voltage is to input this testing circuit from this five voltaisms line of force, and this specific voltage is while being 5 volts, and this testing circuit is controlled this switch unit this process information is sent to this extension display capabilities identification data memory; And
When this specific voltage is to input this testing circuit from this five voltaisms line of force, and this specific voltage is while being 0 volt, and this testing circuit is controlled this switch unit this process information is sent to this processor.
11. signal input control methods according to claim 9, also comprise:
When this specific voltage is to insert detection line from this heat to input this testing circuit, and this specific voltage is while being 5 volts, and this testing circuit is controlled this switch unit this process information is sent to this extension display capabilities identification data memory; And
When this specific voltage is to insert detection line from this heat to input this testing circuit, and this specific voltage is while being 0 volt, and this testing circuit is controlled this switch unit this process information is sent to this processor.
12. signal input control methods according to claim 9, also comprise:
When this specific voltage is to input this testing circuit from this effectiveness line, and this specific voltage is while being 0 volt, and this testing circuit is controlled this switch unit this process information is sent to this extension display capabilities identification data memory; And
When this specific voltage is to input this testing circuit from this effectiveness line, and this specific voltage is while being 9,14,21 volts, and this testing circuit is controlled this switch unit this process information is sent to this processor.
13. 1 kinds of AV devices, are applicable to utilize a HDMI (High Definition Multimedia Interface), and the process information and the control command that by a control device, are provided are provided, and this AV device comprises:
One switch unit, receives this process information by a DDC;
One extends display capabilities identification data memory;
One processor; And
One testing circuit, detect this control command of this control device, according to this control command, control a connection mode of this switch unit in this AV device, this connection mode is divided into a general mode and an AD HOC, wherein this general mode is for making this process information be sent to this extension display capabilities identification data memory by this switch unit, and this AD HOC is for making this process information be sent to this processor by this switch unit.
14. AV devices according to claim 13, wherein this control command is a specific voltage, this specific voltage is adjustable voltage, and according to the numerical value of this specific voltage, controlling this switch unit is that this process information is sent to this extension display capabilities identification data memory or this processor.
15. AV devices according to claim 14, at least one of the effectiveness line that wherein this testing circuit has by this HDMI (High Definition Multimedia Interface), the slotting detection line of a heat or the First Five-Year Plan voltaism line of force is connected with this control device, detect after this specific voltage, according to this specific voltage, this testing circuit changes this connection mode of this switch unit, and this connection mode determines that this switch unit is that this process information is sent to this extension display capabilities identification data memory or this processor.
16. AV devices according to claim 15, wherein, when this specific voltage is to input this testing circuit from this five voltaisms line of force, and when this specific voltage is 5 volts, this testing circuit is controlled this switch unit this process information is sent to this extension display capabilities identification data memory, when this specific voltage is to input this testing circuit from this five voltaisms line of force, and this specific voltage is while being 0 volt, and this testing circuit is controlled this switch unit this process information is sent to this processor.
17. AV devices according to claim 15, wherein, when this specific voltage is to insert detection line from this heat to input this testing circuit, and when this specific voltage is 5 volts, this testing circuit is controlled this switch unit this process information is sent to this extension display capabilities identification data memory, when this specific voltage is to insert detection line from this heat to input this testing circuit, and this specific voltage is while being 0 volt, and this testing circuit is controlled this switch unit this process information is sent to this processor.
18. AV devices according to claim 15, wherein, when this specific voltage is to input this testing circuit from this effectiveness line, and when this specific voltage is 0 volt, this testing circuit is controlled this switch unit this process information is sent to this extension display capabilities identification data memory, when this specific voltage is to input this testing circuit from this effectiveness line, and this specific voltage is while being 9,14,21 volts, and this testing circuit is controlled this switch unit this process information is sent to this processor.
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| TWI339810B (en) * | 2006-03-08 | 2011-04-01 | Sony Corp | Image display apparatus and image display method |
| CN101630499A (en) * | 2008-07-17 | 2010-01-20 | 新汉电脑股份有限公司 | Video signal processing system and video signal processing method thereof |
| CN201550224U (en) * | 2009-10-20 | 2010-08-11 | 大连捷成实业发展有限公司 | DVI communication data transmission device |
| CN101895785A (en) * | 2010-07-01 | 2010-11-24 | 广东欧珀电子工业有限公司 | Portable HDMI CEC automatic testing device and testing method thereof |
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| CN110233985B (en) * | 2018-03-06 | 2020-12-08 | 赛灵思公司 | Data transmission method and network video monitoring device |
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