CN106844252A - USB change-over circuits are changed and transmission method with signal - Google Patents
USB change-over circuits are changed and transmission method with signal Download PDFInfo
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- CN106844252A CN106844252A CN201510888948.XA CN201510888948A CN106844252A CN 106844252 A CN106844252 A CN 106844252A CN 201510888948 A CN201510888948 A CN 201510888948A CN 106844252 A CN106844252 A CN 106844252A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/38—Universal adapter
- G06F2213/3852—Converter between protocols
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention provides a kind of USB change-over circuits and is changed with a kind of signal and transmission method, wherein the USB change-over circuits include:One HDMI (High Definition Multimedia Interface, HDMI) transceiver, is used to receive and dispatch a HDMI signals, and wherein the HDMI signals include an at least video-audio signal and multiple process signals;One signaling conversion circuit, is coupled to the HDMI transceivers, is used to perform a conversion operation process the conversion between the plurality of process signal and a usb signal;And a USB socket, it is coupled to the signaling conversion circuit, including a usb signal pin and one group of video-audio signal pin, wherein the usb signal system is received and dispatched by the usb signal pin and an electronic installation, and the video-audio signal system is received and dispatched by this group of video-audio signal pin and the electronic installation.
Description
Technical field
It is espespecially a kind of the present invention relates to a kind of USB (Universal Serial Bus, USB) change-over circuit
C-type USB interface (USB type-C interface) and HDMI (High Definition
Multimedia Interface, HDMI) change-over circuit and correlation technique.
Background technology
The C that VESA (Video Electronics Standards Association, VESA) proposes
Type USB and a kind of digital video interface standard, display port (Displayport, DP), between translative mode (USB
Type C DP Alt mode) such that c-type USB interface is able to support DP signals.However, current family expenses audio-visual devices, such as TV,
Video switching box (Set Top Box, STB) etc., mostly or based on HDMI signals, and the c-type USB in prior art at present
Still there are many shortcomings need to overcome with the converter of HDMI.For example, the converter of simple c-type USB and HDMI is without power supply energy
Power, and intermediate demand is by another DP and HDMI converter, thus received and dispatched and non-protogenous HDMI data;If in addition,
There is power supply capacity, it is necessary to HDMI data are first all converted into DP on the device on both sides, recycle c-type USB and DP to change
Pattern makes it have power supply capacity, but this way need to use two DP and HDMI converter, and cost will be significantly increased.Phase
Compared with DP, HDMI has more consumption electronic products control signal (Consumer Electronics Control, CEC), hot plug
The signal such as detection (Hot Plug Detection, HPD) and 5 volts of voltage signals, it is therefore necessary to overcome this problem just to enter
Conversion between row c-type USB interface and HDMI.
The content of the invention
The invention discloses a kind of c-type USB interface and HDMI change-over circuits and correlation technique solving asking in prior art
Topic.
According to one embodiment of the invention, there is provided a kind of USB change-over circuit, the wherein USB turn
Changing circuit includes:One HDMI (High Definition Multimedia Interface, HDMI) is received
Hair device, is used to receive and dispatch a HDMI signals, and wherein the HDMI signals include an at least video-audio signal and multiple process signals;One letter
Number change-over circuit, is coupled to the HDMI transceivers, is used to perform a conversion operation and is believed with a USB with processing the plurality of process signal
Conversion between number;And a USB socket, be coupled to the signaling conversion circuit, including a usb signal pin and one group it is audio-visual
Signal pin, the wherein usb signal are received and dispatched by the usb signal pin and an electronic installation, and the video-audio signal passes through
This group of video-audio signal pin is received and dispatched with the electronic installation.
According to one embodiment of the invention, there is provided a kind of signal conversion and transmission method, wherein the method include:Receive and dispatch one high
Definition multimedia interface (High Definition Multimedia Interface, HDMI) signal, wherein HDMI letters
Number include an at least video-audio signal and multiple process signal;Perform a conversion operation and led to one with processing the plurality of process signal
With the conversion between universal serial bus (Universal Serial Bus, USB) signal;And a USB socket is utilized, wherein should
USB socket include a usb signal pin and one group of video-audio signal pin, wherein the usb signal by the usb signal pin with
One electronic installation is received and dispatched, and the video-audio signal is received and dispatched by this group of video-audio signal pin and the electronic installation.
Brief description of the drawings
Accompanying drawing 1 is the electronic installation schematic diagram with USB change-over circuit according to an embodiment of the invention.
Accompanying drawing 2 is the schematic diagram of USB change-over circuit according to an embodiment of the invention.
Accompanying drawing 3 is the schematic diagram of the first connected mode according to an embodiment of the invention.
Accompanying drawing 4 is the schematic diagram of the second connected mode according to an embodiment of the invention.
Accompanying drawing 5 is switch unit according to an embodiment of the invention in the operation chart of the first connected mode.
Accompanying drawing 6 is switch unit according to an embodiment of the invention in the operation chart of the second connected mode.
Specific embodiment
Some vocabulary have been used to censure specific component in the middle of specification and follow-up claim.Affiliated neck
Field technique personnel are, it is to be appreciated that hardware manufacturer may call same component with different nouns.This specification and after
Continuous claim is not in the way of the difference of title is used as distinguishing component, but the difference with component functionally
It is used as the criterion distinguished.In the whole text specification and follow-up claim mentioned in " including " be an open use
Language, therefore " including but not limited to " should be construed to.Additionally, " coupling " one word includes any direct and is indirectly electrically connected herein
Means, therefore, if a first device is coupled to a second device described in text, representing the first device can directly be electrically connected
In the second device, or it is electrically connected indirectly to the second device by other devices or connection means.
Accompanying drawing 1 is according to an embodiment of the invention with USB (Universal Serial Bus, USB)
The schematic diagram of electronic installation 100 of change-over circuit 110, as shown in Figure 1, the USB change-over circuits 110 included by electronic installation 100
With a socket 120, wherein socket 120 is the socket for meeting c-type USB interface (USB type-C interface), and
Electronic installation 100 is attached by a c-type USB interface cable 130 with an electronic installation 101.Similarly, electronic installation 101
With a socket 121, wherein socket 121 is also the socket for meeting c-type USB interface.In this embodiment, electronic installation 100
Can be a TV or a c-type USB and HDMI adapters, and electronic installation 101 can for a video switching box (Set Top Box,
STB), video set top boxes (Over The Top Box, OTT Box) etc..As shown in Figure 1, by USB proposed by the invention
Change-over circuit 110, you can only by a c-type USB interface cable HDMI (High
Definition Multimedia Interface, HDMI) signal, it is not necessary to a c-type USB and DP converters as medium,
The detailed architecture of USB change-over circuits 110 will be illustrated in subsequent paragraph.
Accompanying drawing 2 is the schematic diagram of the USB change-over circuits 110 according to one embodiment of the invention, as shown in Figure 2, except attached
Outside socket 120 shown in Fig. 1, USB change-over circuits 110 separately include a HDMI transmission circuits 210, a signaling conversion circuit 220 with
And a switch unit 230, wherein HDMI transmission circuits 210 are used to receive and dispatch a HDMI signal S1, and wherein HDMI signals S1 includes
HDMI video-audio signals VS and multiple process signals, in this embodiment, the plurality of process signal includes an at least display data
Channel signal (Display Data Channel, DDC), a hot plug detection signal (Hot Plug Detection, HPD) with
And one 5 volts of voltage signals;Signaling conversion circuit 220 is used to change the plurality of process signal (DDC, HPD, 5 volts of voltage letters
Number) it is a signal S2, wherein signal S2 meets the specification of USB 2.0, and by one group of USB2.0 pin in socket 120
USBpin is received and dispatched, and video-audio signal VS included in HDMI signals S1 is then by one group of audio-visual pin in socket 120
VSpin is received and dispatched, it should be noted that, this embodiment is to carry out video-audio signal using the two couples transmitting-receiving pin in c-type USB socket
The transmitting-receiving of VS, that is to say, that audio-visual pin VSpin has 4 pairs of pins.In addition, separately including consumer electricity in HDMI signals S1
Sub- control of product signal (Consumer Electronics Control, CEC), in one embodiment, the CEC signals can pass through
A sideband in socket 120 uses (sideband use, SBU) pin to be received and dispatched, but this limitation not of the invention,
In another embodiment, can by signaling conversion circuit 220 by the CEC signals with DDC, HPD and 5 volts of voltage signals together turn
It is changed to signal S2 and is received and dispatched by USB2.0 pins USBpin.It is noted that c-type USB socket and c-type USB interface cable
Allowed between line with one first connected mode (in this embodiment for forward direction is connected) or one second connected mode (in this embodiment
Middle Opposite direction connection) it is attached, therefore, it is another in socket 120 to include a detection pin CC to detect current c-type USB interface cable
Connection between socket is the first connected mode (forward direction connection) or the second connected mode (Opposite direction connection), if the second connection
During mode (Opposite direction connection), signaling conversion circuit 220 will transmit a control signal CS to switch unit 230 to ensure video-audio signal
The correctness of VS, detailed content will be illustrated in subsequent paragraph.
Accompanying drawing 3 is the schematic diagram of the first connected mode (forward direction connection) according to one embodiment of the invention, wherein socket 120
Included audio-visual pin VSpin includes pin Pair1, Pair2, Pair3 and Pair4, it should be noted that, shown in accompanying drawing 3
Audio-visual position of pin VSpin, USB2.0 pin USBpin and SBU pin in socket 120, relative position to each other
It is only that example is illustrated Deng all, a limitation not of the invention, also, socket 120 is not only with pin listed in icon, ability
Field technique personnel will be understood that included pin number in c-type USB socket, relative position and purposes.C-type USB interface cable
113 are accompanied with the plug 300 for meeting c-type USB interface, slot A that wherein plug 300 includes being connected with audio-visual pin VSpin,
B, C and D, it should be noted that, the slot quantity of the plug 300 shown in accompanying drawing 3 is only example explanation, a limit not of the invention
System, also, plug 300, not only with slot listed in icon, those skilled in the art will be understood that c-type USB interface cable
Plug included by slot number and purposes.When socket 120 and plug 300 are the first connected mode (forward direction is connected), insert
To pin Pair2, slot C correspondence to pin Pair3, slot D is corresponding to pin to pin Pair1, slot B correspondence for groove A correspondences
Pair4.Accompanying drawing 4 is the schematic diagram of the second connected mode (Opposite direction connection) according to an embodiment of the invention, when socket 120 with insert
First 300 be the second connected mode (Opposite direction connection) when, slot D correspondence to pin Pair1, slot C correspondence to pin Pair2, insert
Slot A is corresponding to pin Pair4 to pin Pair3 for groove B correspondences.
Accompanying drawing 5 be the switch unit 230 according to one embodiment of the invention in the operation chart of the first connected mode, such as it is attached
Shown in Fig. 5, HDMI transmission circuits 210 include corresponding pin Pain1 ', Pair2 ', Pair3 ' and Pair4 ', wherein corresponding connect
Pin Pair1 ' is used to receive a Part I VS1 of video-audio signal VS, and corresponding pin Pair2 ' is used to receive video-audio signal VS's
One Part II VS2, corresponding pin Pair3 ' are used to receive a Part III VS3 of video-audio signal VS, and corresponding pin
Pair4 ' is used to receive a Part IV VS4 of video-audio signal VS.When detection pin CC detect socket 120 and plug 300 it
Between for the first connected mode (forward direction connection) when, the control signal CS that switch unit is transmitted according to signaling conversion circuit 220 will
The pin Pair1 of audio-visual pin VSpin is coupled to the corresponding pin Pair1 ' of HDMI transmission circuits 210 to receive and dispatch video-audio signal VS
Part I VS1, the pin Pair2 of audio-visual pin VSpin is coupled to the corresponding pin Pair2 ' of HDMI transmission circuits 210
To receive and dispatch the Part II VS2 of video-audio signal VS, the pin Pair3 of audio-visual pin VSpin is coupled to HDMI transmission circuits 210
Corresponding pin Pair3 ' to receive and dispatch the Part III VS3 of video-audio signal VS, and by the pin Pair4 couplings of audio-visual pin VSpin
The corresponding pin Pair4 ' of HDMI transmission circuits 210 is connected to receive and dispatch the Part IV VS4 of video-audio signal VS.It is noted that
HDMI transmission circuits 210 not only include corresponding pin Pair1 ' to Pair4 ', and this is only example explanation, and this area tool is generally known
The knowledgeable will be understood that HDMI transmission circuits 210 should have its remaining pin function and purposes.Accompanying drawing 6 is according to an implementation of the invention
The switch unit 230 of example in the operation chart of the second connected mode, when detection pin CC detects socket 120 and plug 300
Between for the second connected mode (Opposite direction connection) when, the control signal CS that switch unit is transmitted according to signaling conversion circuit 220,
The pin Pair4 of audio-visual pin VSpin is coupled to the corresponding pin Pair1 ' of HDMI transmission circuits 210 to receive and dispatch video-audio signal
The Part I VS1 of VS, the pin Pair3 of audio-visual pin VSpin is coupled to the corresponding pin of HDMI transmission circuits 210
The pin Pair2 of audio-visual pin VSpin is coupled to HDMI transmitting-receivings by Pair2 ' to receive and dispatch the Part II VS2 of video-audio signal VS
The corresponding pin Pair3 ' of circuit 210 to receive and dispatch the Part III VS3 of video-audio signal VS, and by the pin of audio-visual pin VSpin
Pair1 is coupled to the corresponding pin Pair4 ' of HDMI transmission circuits 210 to receive and dispatch the Part IV VS4 of video-audio signal VS.One
In embodiment, switch unit 220 can be the connection of switch switching pin Pair1-Pair4 and corresponding pin Pair1 '-Pair4 '
Path, however, this is only example explanation, a limitation not of the invention, in other words, the present invention is not intended to limit switch unit
220 implementation method.In addition, in one embodiment, switch unit 230 independently of HDMI transmission circuits 210 and socket 120 it
Outward, that is to say, that switch unit 230 can be implemented separately in an integrated circuit.However, in another embodiment, switch unit
230 can realize in HDMI transmission circuits 210 or socket 120, as long as switching pin Pair1-Pair4 and corresponding pin can be reached
The access path of Pair1 '-Pair4 ' should all belong to scope of the invention.
Simple to conclude the present invention, the present invention proposes a kind of change-over circuit of c-type USB and HDMI, believes by by multiple treatment
Number (such as DDC, HPD, 5 volts of voltage signals) are converted to the signal for meeting USB2.0 specifications, you can pass through HDMI signals
An independent c-type USB interface cable is transmitted while by the characteristic of c-type USB interface cable with another electronic installation
Power supply is provided to another device.
The foregoing is only the preferred embodiments of the invention, all impartial changes done according to scope of the present invention patent with
Modification, should all belong to covering scope of the invention.
Symbol description
100th, 101 electronic installation;
110 USB change-over circuits;
120th, 121 socket;
130 c-type USB interface cables;
210 HDMI transmission circuits;
220 signaling conversion circuits;
230 switch units;
S1 HDMI signals;
S2 signals;
DDC IC bus signals
HPD hot plug detection signals
5 volts of voltage signals of 5V
CEC consumption electronic products control signals
SBU sidebands use pin
VS video-audio signals
The audio-visual pins of VSpin
USBpin USB2.0 pins
CC detects pin
CS control signals
Pair1 '-Pair4 ' corresponding pins.
Claims (10)
1. a kind of USB change-over circuits, including:
One HDMI transceivers, are used to receive and dispatch a HDMI signals, and wherein the HDMI signals include at least a video-audio signal and multiple
Process signal;
One signaling conversion circuit, is coupled to the HDMI transceivers, is used to perform a conversion operation process the plurality of process signal
With the conversion between a usb signal;And
One USB socket, is coupled to the signaling conversion circuit, including a usb signal pin and one group of video-audio signal pin, wherein
The usb signal is received and dispatched by the usb signal pin and an electronic installation, and the video-audio signal is connect by this group of video-audio signal
Pin is received and dispatched with the electronic installation.
2. USB change-over circuits as claimed in claim 1, the wherein USB socket is the socket for meeting c-type USB interface, the USB
Socket includes one group of pin of the specifications of USB 2.0, and the usb signal is a signal for meeting the specifications of USB 2.0.
3. USB change-over circuits as claimed in claim 1, wherein the plurality of process signal includes at least display data channel letter
Number (DDC), a hot plug detection signal (HPD) and one 5 volts of voltage signals.
4. USB change-over circuits as claimed in claim 1, wherein the plurality of process signal includes an at least consumption electronic products
Control signal (CEC).
5. USB change-over circuits as claimed in claim 1, wherein the HDMI signals separately include that a consumption electronic products control letter
Number, and the USB socket separately includes that a sideband uses (SBU) pin, the wherein consumption electronic products control signal passes through the side
Band is received and dispatched using pin with the electronic installation.
6. USB change-over circuits as claimed in claim 1, wherein the HDMI transceivers include one first corresponding pin, are used to receive
A Part I, one second corresponding pin of the video-audio signal are sent out, is used to receive and dispatch a Part II of the video-audio signal, one the 3rd
Corresponding pin, is used to receive and dispatch a Part III of the video-audio signal, and one the 4th corresponding pin, is used to receive and dispatch the video-audio signal
A Part IV, this group of video-audio signal pin include one first pin, one second pin, one the 3rd pin and one the 4th connect
Pin, the USB socket can separately be used to detect that the USB cable that connects the electronic installation and the USB socket and the USB socket are one the
One connected mode or one second connected mode and the USB change-over circuits separately include:
One switch unit, when it is the second connected mode that a detection pin is detected between the USB cable and the USB socket, this is cut
Changing unit controls the Part I of the video-audio signal to be received and dispatched with the HDMI by this group of the 4th pin of video-audio signal pin
Device is received and dispatched, and the Part II of the video-audio signal is received and dispatched by this group of the 3rd pin of video-audio signal pin with the HDMI
Device is received and dispatched, and the Part III of the video-audio signal is received and dispatched by this group of second pin of video-audio signal pin with the HDMI
Device is received and dispatched, and the Part IV of the video-audio signal is received and dispatched by this group of first pin of video-audio signal pin with the HDMI
Device is received and dispatched;When it is the first connected mode that the detection pin is detected between the USB cable and the USB socket, the switching list
Unit controls the Part I of the video-audio signal to enter with the HDMI transceivers by this group of first pin of video-audio signal pin
Row transmitting-receiving, Part II of the video-audio signal is entered by this group of second pin of video-audio signal pin with the HDMI transceivers
Row transmitting-receiving, Part III of the video-audio signal is entered by this group of the 3rd pin of video-audio signal pin with the HDMI transceivers
Row transmitting-receiving, Part IV of the video-audio signal is entered by this group of the 4th pin of video-audio signal pin with the HDMI transceivers
Row transmitting-receiving.
7. a kind of signal is changed and transmission method, including:
A HDMI signals are received and dispatched, wherein the HDMI signals include an at least video-audio signal and multiple process signals;
A conversion operation is performed to process the conversion between the plurality of process signal and a usb signal;And
Using a USB socket, the wherein USB socket includes a usb signal pin and one group of video-audio signal pin, wherein should
Usb signal is received and dispatched by the usb signal pin and an electronic installation, and the video-audio signal passes through this group of video-audio signal pin
Received and dispatched with the electronic installation.
8. signal as claimed in claim 7 is changed and transmission method, and wherein the USB socket is to meet inserting for c-type USB interface
Seat, the USB socket includes one group of pin of the specifications of USB 2.0, and the usb signal is a signal for meeting the specifications of USB 2.0.
9. signal as claimed in claim 7 is changed and transmission method, wherein the plurality of process signal includes at least one display number
According to channel signal (DDC), a hot plug detection signal (HPD) and one 5 volts of voltage signals.
10. signal as claimed in claim 7 is changed and transmission method, wherein the plurality of process signal includes an at least consumer
Electronic product control signal (CEC).
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CN201510888948.XA CN106844252B (en) | 2015-12-07 | 2015-12-07 | USB conversion circuit and signal conversion and transmission method |
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CN201510888948.XA CN106844252B (en) | 2015-12-07 | 2015-12-07 | USB conversion circuit and signal conversion and transmission method |
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CN106844252B CN106844252B (en) | 2020-03-24 |
Family
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Cited By (4)
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CN107301148A (en) * | 2017-06-27 | 2017-10-27 | 龙迅半导体(合肥)股份有限公司 | USB Type C interface modular converter, system and connection method |
CN109286764A (en) * | 2017-07-20 | 2019-01-29 | 青岛海信电器股份有限公司 | Television set with USB TYPE-C interface |
CN113161825A (en) * | 2020-01-07 | 2021-07-23 | 瑞昱半导体股份有限公司 | Cable, controller and control method thereof |
US11232057B2 (en) | 2017-07-20 | 2022-01-25 | Hisense Visual Technology Co., Ltd. | Terminal device and control method thereof |
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CN102662514A (en) * | 2012-03-30 | 2012-09-12 | 中兴通讯股份有限公司 | Touch screen control method and mobile terminal |
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CN107301148A (en) * | 2017-06-27 | 2017-10-27 | 龙迅半导体(合肥)股份有限公司 | USB Type C interface modular converter, system and connection method |
CN107301148B (en) * | 2017-06-27 | 2020-06-02 | 龙迅半导体(合肥)股份有限公司 | USB Type-C interface conversion module, system and connection method |
CN109286764A (en) * | 2017-07-20 | 2019-01-29 | 青岛海信电器股份有限公司 | Television set with USB TYPE-C interface |
CN109286764B (en) * | 2017-07-20 | 2020-11-20 | 海信视像科技股份有限公司 | Television with USB TYPE-C interface |
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CN113161825A (en) * | 2020-01-07 | 2021-07-23 | 瑞昱半导体股份有限公司 | Cable, controller and control method thereof |
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