CN113872660B - Signal enhancement relay device and method - Google Patents
Signal enhancement relay device and method Download PDFInfo
- Publication number
- CN113872660B CN113872660B CN202010619798.3A CN202010619798A CN113872660B CN 113872660 B CN113872660 B CN 113872660B CN 202010619798 A CN202010619798 A CN 202010619798A CN 113872660 B CN113872660 B CN 113872660B
- Authority
- CN
- China
- Prior art keywords
- circuit
- display
- channel
- transmission
- path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 79
- 230000005540 biological transmission Effects 0.000 claims abstract description 111
- 238000012545 processing Methods 0.000 claims abstract description 40
- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 238000012549 training Methods 0.000 claims description 24
- 238000012546 transfer Methods 0.000 claims description 7
- 230000000875 corresponding effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
- H04B7/15542—Selecting at relay station its transmit and receive resources
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15557—Selecting relay station operation mode, e.g. between amplify and forward mode, decode and forward mode or FDD - and TDD mode
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
A signal enhancement relay device. The display data channel extension circuit includes: direct channels and indirect channels. The direct channel is provided with a path listening circuit. The indirect path includes a master and a slave path provided with master and slave transmission circuits, respectively. The direct channel is selected in a preset passive mode, and the monitoring link bridging processing circuit is enabled to monitor display data transmission on the direct path through the path monitoring circuit so as to carry out a channel link program of the corresponding data enhancement transmission channel. When the channel linking procedure in the passive mode fails, the indirect channel is selected in the active mode, and the intervening link bridging processing circuit is enabled to access the display data transmission on the paths of the master and slave terminals through the master and slave terminal transmission circuits respectively so as to respectively carry out the channel linking procedure of the corresponding data enhancement transmission channel with the endpoint.
Description
Technical Field
The present invention relates to image transmission technology, and in particular, to a signal enhancement relay device and method.
Background
In compliance with the trend of high-definition digital image demands, image data needs a transmission mechanism with higher speed and larger bandwidth to transmit. The high definition multimedia interface (High Definition Multimedia Interface, HDMI) is one of the interfaces that are currently often employed. Among them, HDMI 2.1 having a high-speed transmission bandwidth of 12Gbps and capable of supporting up to 10K high-resolution pictures has become the mainstream.
To extend transmission distance and stabilize signal quality, a relay device such as a redrive circuit (re) or a retimer circuit (re) may be used to enhance the data. For the relay device to operate, the relay device needs to link the relayed endpoint devices through bridging techniques. However, current bridging techniques are often inefficient on links or tend to reduce the likelihood of successful links due to poor routing or latency between the relay device and the endpoint device.
Disclosure of Invention
In view of the foregoing, it is an object of the present invention to provide a signal enhancement relay device and method for improving the prior art.
An object of the present invention is to provide a signal enhancement (enhancement) relay device for linking a display transmitting device and a display receiving device, wherein an embodiment of the signal enhancement relay device includes: display data channel extension circuit, data enhancement transmission channel, monitor link bridging processing circuit and intervening link bridging processing circuit. The display data channel extension circuit includes: a direct channel and an indirect channel. The direct channel includes a direct path and a path listening (snoper) circuit electrically coupled to the direct path. The indirect path includes a master path provided with a master transmission circuit and a slave path provided with a slave transmission circuit. The snoop link bridging processing circuit is electrically coupled to the path snoop circuit. The intervening link bridging processing circuit is electrically coupled to the master-side transmission circuit and the slave-side transmission circuit. The direct channel is selected in a preset passive mode so that the direct path is directly and electrically coupled to the display receiving device and the display transmitting device, and the monitoring link bridging processing circuit is enabled to monitor display data transmission on the direct path through the path monitoring circuit so as to carry out a channel linking program of the corresponding data enhancement transmission channel. When the channel linking procedure in the passive mode fails, the indirect channel is selected in the active mode so that the master and slave paths are electrically coupled to the display receiving device and the display transmitting device, respectively, and the intervening link bridging processing circuit is enabled to access the display data transmission on the master and slave paths through the master and slave transmission circuits, respectively, so as to perform the channel linking procedure.
Another object of the present invention is to provide a signal enhancement relay method, applied to a signal enhancement relay device, where the signal enhancement relay device is used to link a display transmitting device and a display receiving device, and an embodiment of the signal enhancement relay method includes: in a preset passive mode, selecting a direct channel of the display data channel extension circuit to be electrically coupled to the display receiving device and the display transmitting device, wherein the direct channel comprises a direct path directly electrically coupled to the display receiving device and the display transmitting device and a path monitoring circuit electrically coupled to the direct path; in a passive mode, a monitoring link bridging processing circuit electrically coupled to the path monitoring circuit is started to monitor display data transmission on a direct path through the path monitoring circuit so as to carry out a channel link program of a corresponding data enhancement transmission channel; judging whether the channel link program in the passive mode fails or not; when the channel linking procedure in the passive mode fails, in the active mode, selecting an indirect channel of the display data channel extension circuit to be electrically coupled to the display receiving device and the display transmitting device, wherein the indirect channel comprises a main end path provided with a main end transmission circuit and electrically coupled to the display receiving device and a slave end path provided with a slave end transmission circuit and electrically coupled to the display transmitting device; and in the active mode, enabling an intervening link bridging processing circuit electrically coupled to the master and slave transmission circuits to access display data transmissions on the master and slave paths respectively through the master and slave transmission circuits for channel linking procedures.
The features, embodiments and technical effects of the present invention are described in detail below as preferred examples with reference to the accompanying drawings.
Drawings
FIG. 1 is a block diagram of a signal enhancement relay device according to an embodiment of the present invention;
FIG. 2A is a simplified block diagram of a signal enhancement relay device in a passive mode according to an embodiment of the present invention;
FIG. 2B is a simplified block diagram of a signal enhancement relay device in an active mode according to an embodiment of the present invention; and
fig. 3 is a flowchart of a signal enhancement relay method according to an embodiment of the invention.
Detailed Description
An objective of the present invention is to provide a signal enhancement relay device and a method thereof, which can achieve the purpose of fast link training by a passive mode, and can improve the probability of successful link training by an active mode for independently adjusting the display transmitting device SOU and the display receiving device SIN when a failure occurs.
Please refer to fig. 1. Fig. 1 shows a block diagram of a signal enhancement (enhancement) relay device 100 according to an embodiment of the present invention.
In one embodiment, the signal enhancement relay device 100 is electrically coupled between the display receiving device SIN and the display transmitting device SOU to link the display receiving device SIN and the display transmitting device SOU, and enhance the image data transmitted to the display receiving device SIN by the signal enhancement relay device 100 by the display transmitting device SOU.
In one embodiment, the display receiving device SIN and the display transmitting device SOU perform transmission of image data according to a format of a high-definition multimedia interface (High Definition Multimedia Interface, HDMI). In a different manner of enhancement, the signal enhancement relay device 100 may be implemented by, for example, but not limited to, a redrive circuit (redrive) or a retimer circuit (retimer).
The signal enhancement relay apparatus 100 includes: a display data channel extension circuit 110, a data enhancement transmission channel 120, a listening link bridging processing circuit 130, and an intervening link bridging processing circuit 140.
The display data channel extension circuit 110 establishes a display data channel (display data channel, DDC) for transmitting display data via, for example, but not limited to, an I2C interface, exchanging information and status between the display receiving device SIN and the display transmitting device SOU. In one embodiment, the display data channel extension circuit 110 includes a direct channel and an indirect channel.
The direct channel includes a direct path 150 and a path listening (snoper) circuit 155. The direct path 150 is a communication path for transmitting display data. The path listening circuit 155 is electrically coupled to the direct path 150 and listens for display data transmissions on the direct path 150.
The snoop link bridging processing circuit 130 is electrically coupled to the path snoop circuit 155. In one embodiment, when the signal enhancement relay device 100 is operating in the passive mode, the snoop link bridging processing circuit 130 will be enabled to perform the above-described snoop via the path snoop circuit 155 for the channel linking procedure of the corresponding data enhancement transmission channel 120.
The indirect paths include respective independent master-side paths 160A and slave-side paths 160B. The master path 160A is provided with a master transmission circuit 165A, and the slave path 160B is provided with a slave transmission circuit 165B.
The interposed link bridge processing circuit 140 is electrically coupled between the master transmission circuit 165A and the slave transmission circuit 165B. In one embodiment, when the signal enhancement relay device 100 is operating in the active mode, the intervening link bridging processing circuit 140 is enabled to access the display data transmission on the master path 160A and the slave path 160B, respectively, for the channel linking procedure of the corresponding data enhancement transmission channel 120.
The data enhanced transmission channel 120 includes a receiving circuit RX, a transmitting circuit TX, and a data enhancing circuit ENH.
The receiving circuit RX is electrically coupled to the display and transmission device SOU. The transmitting circuit TX is electrically coupled to the display receiving device SIN. The data enhancement circuit ENH enhances the data transferred between the reception circuit RX and the transfer circuit TX when the channel linking procedure is completed. More specifically, after the channel linking procedure is completed, the data enhancement transmission channel 120 establishes, for example, but not limited to, a Fixed Rate Link (FRL), receives image data from the display transmitting device SOU by the receiving circuit RX, transmits the image data to the data enhancement circuit ENH for enhancement, and then transmits the image data to the display receiving device SIN by the transmitting circuit TX.
In order to switch the display data channel extension circuit 110, the listening link bridge processing circuit 130, and the intervening link bridge processing circuit 140 between the passive mode and the active mode, the signal enhancement relay apparatus 100 may optionally further include a first selection circuit 170A, a second selection circuit 170B, and a mode switching circuit 180.
The first selection circuit 170A selects a direct channel in the passive mode to be electrically coupled to the display receiving device SIN through the direct path 150, and selects an indirect channel in the active mode to be electrically coupled to the display receiving device SIN through the main path 160A.
The second selection circuit 170B selects a direct channel in the passive mode to electrically couple to the display conveyor SOU through the direct path 150 and selects an indirect channel in the active mode to electrically couple to the display conveyor SOU through the slave path 160B.
The mode switch circuit 180 generates a mode switch signal MS to operate the snoop link bridge processing circuit 130, the intervening link bridge processing circuit 140, the first selection circuit 170A, and the second selection circuit 170B in one of a passive mode or an active mode.
The operation and switching of the passive mode and the active mode will be described in more detail below.
Please refer to fig. 2A. Fig. 2A shows a simplified block diagram of the signal enhancement relay device 100 in a passive mode in an embodiment of the present invention. More specifically, fig. 2A illustrates only circuit modules of the signal enhancement relay device 100 operating in a passive mode.
In one embodiment, the mode switch circuit 180 is preset to operate the signal enhancement relay apparatus 100 in a passive mode.
The mode switching circuit 180 generates a mode switching signal MS having a first state, so that the first selecting circuit 170A and the second selecting circuit 170B select the direct channel to be electrically coupled to the display receiving device SIN and the display transmitting device SOU through the direct path 150. The display receiving device SIN and the display transmitting device SOU can transmit display data through the direct path 150.
Further, the mode switch signal MS having the first state enables the snoop link bridging processing circuit 130 to snoop the display data transmissions on the direct path 150 for the channel linking procedure via the path snoop circuit 155. In one embodiment, the channel linking program includes a link training (link training) program and an authentication handshake (authentication handshake) program.
In one embodiment, snoop link bridging processing circuitry 130 includes: the bridge control circuit 200 and the authentication listening circuit 210 are linked.
The link bridge control circuit 200 monitors the transmission of the display data on the direct path 150 through the path monitor circuit 155 to control the receiving circuit RX and the transmitting circuit TX to perform the link training procedure with the display transmitting device SOU and the display receiving device SIN, respectively.
In one embodiment, the link training procedure may first transmit its own extended display identification data (Extended display identification data, EDID) information via the direct path 150 by the display receiving device SIN, informing the display transmitting device SOU of its supported transmission capability. The display transmitting device SOU thus transmits a link request of a transmission mode conforming to the transmission capability of the display receiving device SIN to the display receiving device SIN through the direct path 150.
The display receiving device SIN further transmits a training pattern (training pattern) to the display transmitting device SOU via the direct path 150. The display transmitting device SOU transmits test data to the display receiving device SIN through the data enhancement transmission channel 120 according to the training mode, and the display receiving device SIN judges whether the received test data accords with the training mode or not, so as to judge that the link training program is successful when the test data accords with the training mode.
On the other hand, the authentication listening circuit 210 listens for the authentication status according to the display data transmission, so that the link bridge control circuit 200 determines whether the authentication handshake procedure is completed according to the authentication status.
In one embodiment, the authentication handshake procedure may be performed by key authorization between the display receiving device SIN and the display transmitting device SOU, and exchanging digital video protection encoding states. In one embodiment, the authentication handshake procedure is a High-bandwidth digital content protection (HDCP) authentication procedure.
When the link training procedure and the authentication handshake procedure are performed, the listening link bridging processing circuit 130 continuously listens to the display data transmission performed on the direct path 150, and controls the data enhancement transmission channel 120 to perform corresponding actions when the data enhancement transmission channel 120 is required to operate.
It should be noted that the content and the manner of proceeding of the link training program and the authentication handshake program are only examples. In other embodiments, the link training program and the authentication handshake program may include different content and manners of proceeding, and the channel linking program may also include other programs. The present invention is not limited to the above embodiment.
However, the channel linking program may fail for different reasons. In one embodiment, when one of the link training procedure and the authentication handshake procedure fails, it is determined that the channel link procedure fails.
Taking the link training program as an example, when the link training program is not completed within a preset time, the link training program is judged to be failed. And when the link training procedure is completed, the link training procedure is also judged as failed when the rate is lower than the transaction mode of the supportable mode of the display receiving device SIN (for example, the display receiving device SIN can support the HDMI 2.1FRL mode, but the last transaction is in HDMI2.0TMDS mode).
Taking the authentication handshake procedure as an example, when the authentication handshake procedure is not completed within a preset time or the key authentication fails, it is determined as failure.
Please refer to fig. 2B. Fig. 2B shows a simplified block diagram of the signal enhancement relay device 100 in an active mode in accordance with an embodiment of the present invention. More specifically, fig. 2B illustrates only the circuit modules of the signal enhancement relay device 100 operating in the active mode.
In one embodiment, the mode switch circuit 180 causes the signal enhancement relay device 100 to operate in the active mode when the channel linking procedure in the passive mode fails.
The mode switching circuit 180 generates a mode switching signal MS having a second state, so that the first selecting circuit 170A and the second selecting circuit 170B select the indirect channel to be electrically coupled to the display receiving device SIN and the display transmitting device SOU through the master path 160A and the slave path 160B, respectively.
Further, the mode switch signal MS having the second state enables the intervening link bridging processing circuit 140 to access the display data transmission on the master path 160A and the slave path 160B through the master transmission circuit 165A and the slave transmission circuit 165B, respectively, for performing the channel linking procedure. Similarly, the channel linking program includes a linking training program and an authentication handshake program. Further, the signal enhancement relay device 100 operates in the active mode, so that the intervening link bridging processing circuit 140 accesses the display data transmission on the paths of the master and slave terminals through the master and slave terminal transmission circuits, respectively, so as to perform the channel linking procedure of the corresponding data enhancement transmission channel with the endpoint, respectively.
In one embodiment, the intervening link bridging processing circuit 140 includes: link coordination circuitry 220 and authentication synchronization circuitry 230.
The link coordination circuit 220 accesses the display data transmission on the slave path 160B and the master path 160A through the slave transmission circuit 165B and the master transmission circuit 165A, respectively, to perform the link training procedure.
In one embodiment, the link training program includes at least one of the following: coordinating and displaying the link rate of the transmitting device SOU and the display receiving device SIN respectively; adjusting feedforward equalization parameters of the transmission circuit TX; and issuing a request to a display transfer circuit (not shown) of the display transfer device SOU to adjust a display transfer feedforward equalization parameter of the display transfer circuit.
More specifically, when the link rate of the display transmitter apparatus SOU is too low, the link coordination circuit 220 may actively make the master transmission circuit 165A to forcedly update the lower link rate, so as to reduce the link rate of the display receiver apparatus SIN. Otherwise, if the link rate of the display receiving apparatus SIN is too low, the link coordination circuit 220 may actively make the slave transmission circuit 165B send a request for reducing the link rate, so as to reduce the link rate of the display transmitting apparatus SOU.
In an embodiment, when the transmission quality of the signal trace between the signal enhancement relay device 100 and the display receiving device SIN is poor, the transmission circuit TX may receive the request for adjusting the feed-forward equalization (FFE) parameter of the display receiving device SIN, and the transmission circuit TX may adjust the feed-forward equalization parameter to increase the size of the compensating power amplifier to improve the signal quality.
Similarly, the receiving circuit RX may attempt to require the display device SOU to adjust the feedforward equalization parameters in the training mode comparison failure, thereby improving the channel compensation effect to increase the link success rate. Therefore, on the premise of the same channel loss (channel loss) or wire length, the influence of the inferior wire on the signal quality can be reduced as much as possible, and the device compatibility is increased.
On the other hand, the authentication synchronization circuit 230 performs an authentication handshake procedure with the display transmitting apparatus SOU and with the display receiving apparatus SIN in synchronization with each other by the slave transmission circuit 165B and the master transmission circuit 165A accessing the display data transmission on the slave path 160B and the master path 160A, respectively.
In one embodiment, when the channel linking procedure is determined to be failed due to failure of one of the link training procedure and the authentication handshake procedure, the display transmitting apparatus SOU and the display receiving apparatus SIN cannot perform Fixed Rate Link (FRL) data transmission through the signal enhancement relay device 100, or the display receiving apparatus SIN cannot decrypt the data of the data enhancement transmission channel.
Therefore, the signal enhancement relay device 100 of the present invention can perform the fast link training procedure and the monitor authentication procedure state through the passive mode, and switch to the active mode when the channel linking procedure fails, and perform the channel linking procedure with a slower rate but which can be adjusted independently for the display transmitting apparatus SOU and the display receiving apparatus SIN. Such a mechanism can quickly complete channel linking in passive mode and increase the probability of channel linking success in active mode when the channel linking procedure fails.
Please refer to fig. 3. Fig. 3 is a flowchart of a signal enhancement relay method 300 according to an embodiment of the invention.
In addition to the foregoing apparatus, the present invention also discloses a signal enhancement relay method 300, which is applied to, for example, but not limited to, the signal enhancement relay device 100 in fig. 1. An embodiment of a signal enhancement relay method 300 is shown, comprising the steps of:
in step S310: in the predetermined passive mode, the direct channel of the display data channel expansion circuit 110 is selected to be electrically coupled to the display receiving device SIN and the display transmitting device SOU.
The direct channel includes a direct path 150 directly electrically coupled to the display receiving device SIN and the display transmitting device SOU, and a path monitor circuit 155 electrically coupled to the direct path 150.
In step S320: in the passive mode, the snoop link bridging processing circuit 130 electrically coupled to the path snoop circuit 155 is enabled to snoop display data transmissions on the direct path 150 through the path snoop circuit 155 for a channel linking procedure corresponding to the data enhanced transmission channel 120.
In step S330: it is determined whether the channel linking procedure in the passive mode fails.
When the channel linking program in the passive mode has not failed, the flow returns to step S320 to continue to operate in the passive mode.
In step S340: in the active mode, the indirect channel of the display data channel expansion circuit 110 is selected to be electrically coupled to the display receiving device and the SIN display transmitting device SOU when the channel linking procedure in the passive mode fails.
The indirect path includes a master path 160A provided with a master transmission circuit 165A and electrically coupled to the display receiving device SIN, and a slave path 160B provided with a slave transmission circuit 165B and electrically coupled to the display transmitting device SOU.
In step S350: in the active mode, the intervening link bridge processing circuit 140 electrically coupled to the master transmission circuit 165A and the slave transmission circuit 165B is enabled to access the display data transmission on the master path 160A and the slave path 160B through the master transmission circuit 165A and the slave transmission circuit 165B, respectively, for the channel linking procedure.
In step S360: it is determined whether the channel linking procedure in the active mode fails.
When the channel linking procedure in the active mode has not failed, the flow returns to step S350 to continue to operate in the active mode.
In one embodiment, when the channel linking procedure in the active mode fails, the flow may optionally return to step S310 to resume the operation of the signal enhancement relay device 100 in the preset passive mode. In another embodiment, when the channel linking procedure in the active mode fails, the process may optionally determine whether the link between the display receiving device SIN and the display transmitting device SOU is broken in step S370. When the link between the display receiving apparatus SIN and the display transmitting apparatus SOU is not disconnected, it indicates that the signal enhancement relay device 100 continues to keep the active mode operation, and the flow returns to step S350 to try to perform the channel linking procedure. When the link between the display receiving apparatus SIN and the display transmitting apparatus SOU is disconnected, the signal enhancement relay device 100 stops operating in the active mode, and the flow returns to step S310.
It should be noted that the above embodiment is only an example. In other embodiments, variations may be made by those of ordinary skill in the art without departing from the spirit of the invention. It should be understood that, in this embodiment, the steps mentioned in this embodiment may be performed simultaneously or partially simultaneously, and the order of the steps may be adjusted according to actual needs, except when the order is specifically described.
In summary, the signal enhancement relay device and the method of the present invention can achieve the purpose of fast link training program through the passive mode, and independently adjust the link training program of the display transmitting device SOU and the display receiving device SIN through the active mode when the link training program fails, thereby improving the probability of successful link training.
Although the embodiments of the present invention are described above, these embodiments are not intended to limit the present invention. The technical features of the present invention may be changed according to the explicit or implicit content of the present invention by those skilled in the art, and all the changes are within the scope of the present invention, in other words, the scope of the present invention must be defined by the claims of the present application.
[ symbolic description ]
100 Signal enhancement Relay device
110 display data channel extension circuit
120 data enhancement transmission channel
130 snoop link bridging processing circuit
Intervening link bridging processing circuit 140
150 direct path
155 Path listening Circuit
160A Main end Path
160B slave path
165A main end transmission circuit
165B slave-side transmission circuit
170A first selection circuit
170B second selection circuit
180 mode switching circuit
200-Link bridge control Circuit
Authentication monitoring circuit 210
220 linking coordination circuit
230 authentication synchronization circuit
300 signal enhancement relay method
S310-S370 steps
ENH data enhancement circuit
MS mode switch signal
RX receiving circuit
SIN display receiving device
SOU display and transmission device
TX (transmission line) transmission circuit
Claims (10)
1. A signal enhancement relay apparatus for linking a display transmitting device and a display receiving device, the signal enhancement relay apparatus comprising:
a display data channel expansion circuit comprising:
the direct channel unit comprises a direct path wiring and a path monitoring circuit electrically coupled to the direct path wiring; and
an indirect channel unit including a master-end path trace provided with a master-end transmission circuit and a slave-end path trace provided with a slave-end transmission circuit;
a data enhanced transmission channel unit;
a listening link bridging processing circuit electrically coupled to the path listening circuit; and
an intervening link bridging processing circuit electrically coupled to the master transmission circuit and the slave transmission circuit;
wherein the direct channel unit is selected in a preset passive mode to enable the direct path trace to be directly and electrically coupled to the display receiving device and the display transmitting device, and the monitoring link bridging processing circuit is enabled to monitor display data transmitted on the direct path trace through the path monitoring circuit so as to perform a channel linking procedure corresponding to the data enhancement transmission channel unit;
when the channel linking procedure in the passive mode fails, the indirect channel unit is selected in an active mode to electrically couple the master and slave path traces to the display receiving device and the display transmitting device, respectively, and the intervening link bridging processing circuit is enabled to access the display data transmitted on the master and slave path traces through the master and slave transmission circuits, respectively, to perform the channel linking procedure.
2. The signal enhancement relay device of claim 1, further comprising:
a first selection circuit configured to select the direct channel unit to be electrically coupled to the display receiving device through the direct path trace in the passive mode and to select the indirect channel unit to be electrically coupled to the display receiving device through the main end path trace in the active mode; and
a second selection circuit configured to select the direct channel unit to be electrically coupled to the display transfer device through the direct path trace in the passive mode and to select the indirect channel unit to be electrically coupled to the display transfer device through the slave path trace in the active mode.
3. The signal enhancement relay device of claim 2, further comprising a mode switching circuit configured to generate a mode switching signal to cause the snoop link bridging processing circuit, the intervening link bridging processing circuit, the first selection circuit, and the second selection circuit to operate in one of the passive mode or the active mode.
4. The signal enhancement relay device according to claim 1, wherein the channel linking program includes a link training program and an authentication handshake program, the channel linking program being determined to be failed when one of the link training program and the authentication handshake program fails.
5. The signal enhancement relay device according to claim 4, wherein when the link training procedure is not completed within a preset time or when the link training procedure is completed, a success rate is judged to be failed when a success mode of which a supportable mode of the display reception apparatus is lower.
6. The signal enhancement relay device of claim 4, wherein the authentication handshake procedure is judged to be failed when it is not completed within a preset time or key authentication fails.
7. The signal enhancement relay device of claim 4, wherein the data enhancement transmission channel unit comprises:
the receiving circuit is electrically coupled with the display transmission device;
the transmission circuit is electrically coupled with the display receiving device; and
a data enhancement circuit configured to enhance data transferred between the receiving circuit and the transmitting circuit when the channel linking procedure is completed.
8. The signal enhancement relay device of claim 7, wherein the snoop link bridging processing circuit comprises:
a link bridging control circuit configured to monitor display data transmitted on the direct path trace through the path monitor circuit to control the receiving circuit and the display transmitting device and the transmitting circuit and the display receiving device to perform the link training program; and
and the authentication monitoring circuit is configured to monitor an authentication state according to the display data transmitted on the direct path wiring so that the link bridging control circuit judges whether the authentication handshake procedure is finished according to the authentication state.
9. The signal enhancement relay device of claim 7, wherein the intervening link bridging processing circuit comprises:
a link coordination circuit configured to access the display data transmission on the slave path trace and the master path trace through the slave transmission circuit and the master transmission circuit, respectively, to perform the link training procedure, the link training procedure including at least one of: coordinating the link rates respectively intersected with the display transmission device and the display receiving device; adjusting feedforward equalization parameters of the transmission circuit; sending a request for adjusting a display transmission feedforward equalization parameter of the display transmission circuit to a display transmission circuit of the display transmission device; and
and the authentication synchronization circuit is configured to respectively access the display data transmission on the slave path wiring and the master path wiring through the slave transmission circuit and the master transmission circuit, and respectively perform the authentication handshake procedure with the display transmitting device and the display receiving device synchronously.
10. A signal enhancement relay method applied to a signal enhancement relay device, the signal enhancement relay device being used for linking a display transmitting device and a display receiving device, the signal enhancement relay method comprising:
in a preset passive mode, selecting a direct channel unit of a display data channel extension circuit to be electrically coupled to the display receiving device and the display transmitting device, wherein the direct channel unit comprises a direct path trace directly electrically coupled to the display receiving device and the display transmitting device and a path monitoring circuit electrically coupled to the direct path trace;
in the passive mode, a monitoring link bridging processing circuit electrically coupled to the path monitoring circuit is started to monitor display data transmitted on the direct path wiring through the path monitoring circuit so as to carry out a channel link program of a corresponding data enhancement transmission channel unit;
judging whether the channel link program in the passive mode fails or not;
when the channel linking procedure in the passive mode fails, in an active mode, selecting an indirect channel unit of the display data channel extension circuit to be electrically coupled to the display receiving device and the display transmitting device, wherein the indirect channel unit comprises a master end path wiring provided with a master end transmission circuit and electrically coupled to the display receiving device and a slave end path wiring provided with a slave end transmission circuit and electrically coupled to the display transmitting device; and
in the active mode, an intervening link bridging processing circuit electrically coupled to the master and slave transmission circuits is enabled to access display data transmitted on the master and slave path traces, respectively, through the master and slave transmission circuits to perform the channel linking procedure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010619798.3A CN113872660B (en) | 2020-06-30 | 2020-06-30 | Signal enhancement relay device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010619798.3A CN113872660B (en) | 2020-06-30 | 2020-06-30 | Signal enhancement relay device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113872660A CN113872660A (en) | 2021-12-31 |
| CN113872660B true CN113872660B (en) | 2024-03-26 |
Family
ID=78981725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010619798.3A Active CN113872660B (en) | 2020-06-30 | 2020-06-30 | Signal enhancement relay device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113872660B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101489075A (en) * | 2008-01-15 | 2009-07-22 | 宏正自动科技股份有限公司 | Display signal extending apparatus and method for transmitting display signal therefor |
| CN109144922A (en) * | 2017-06-16 | 2019-01-04 | 纬颖科技服务股份有限公司 | Data transmission device and method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070074269A1 (en) * | 2002-02-22 | 2007-03-29 | Hai Hua | Video processing device, video recorder/playback module, and methods for use therewith |
-
2020
- 2020-06-30 CN CN202010619798.3A patent/CN113872660B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101489075A (en) * | 2008-01-15 | 2009-07-22 | 宏正自动科技股份有限公司 | Display signal extending apparatus and method for transmitting display signal therefor |
| CN109144922A (en) * | 2017-06-16 | 2019-01-04 | 纬颖科技服务股份有限公司 | Data transmission device and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113872660A (en) | 2021-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI748532B (en) | Signal enhancement relay apparatus and method | |
| JP5356469B2 (en) | Digital data interface device | |
| JP5598220B2 (en) | Transmission device, transmission method, reception device, reception method, and transmission / reception system | |
| CN102227912B (en) | Radio transmission system | |
| CN110719423B (en) | Self-adaptive HDMI cable | |
| US20220295137A1 (en) | Cable, method of controlling cable, connection device, electronic device, and method of controlling electronic device | |
| CN112422872A (en) | Circuit compatible with DP and DP + + protocol low-speed signals for line speed forwarding | |
| CN113872660B (en) | Signal enhancement relay device and method | |
| TWI736126B (en) | Cable, controller, and control method thereof | |
| US8243605B2 (en) | Network device verifying apparatus | |
| CN117201709A (en) | Video processor, video data processing method and display device | |
| CN110113209B (en) | MIPI (Mobile industry processor interface) protocol-based inter-device communication method and equipment topological structure | |
| CN113965713B (en) | HDMI active cable supporting high-speed signal link training | |
| CN113688080B (en) | DP signal transmission device and method for improving transmission link compatibility | |
| CN214412882U (en) | Circuit compatible with DP and DP + + protocol low-speed signals for line speed forwarding | |
| EP2337420B1 (en) | A packet structure for a mobile display digital interface | |
| US7849209B2 (en) | System and method for link rate negotiation | |
| CA2685073C (en) | A packet structure for a mobile display digital interface | |
| US10013304B2 (en) | Electrical apparatus, control device and communication method that control communications performed at different communication rates | |
| WO2015118908A1 (en) | Transmitting apparatus, receiving apparatus, communication processing method, and cable | |
| JPH11205413A (en) | Command sending control method, command receiving control method, transmitter and data transmission system | |
| US20220229801A1 (en) | Hdmi-free display device and method for type interface being compatible with hdmi | |
| CN214098416U (en) | Data transmission device | |
| US10154231B2 (en) | Communication device and communication method | |
| CN116884331A (en) | Interface connection circuit, interface connection equipment and interface connection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |