CN-122027755-A - Fast port cutting method

CN122027755ACN 122027755 ACN122027755 ACN 122027755ACN-122027755-A

Abstract

The application discloses a quick port switching method and a switcher, wherein the switcher is electrically connected with a first image source, a second image source and a display, the first image source and the second image source support a digital image protocol, the method comprises the steps of outputting an image signal of the first image source to the display through the switcher, and when the switcher receives a switching signal to switch and select the image signal of the second image source to be output to the display, the switcher inquires version information related to the digital image protocol to the second image source, and does not inquire extended display identification information to the display, and then the version information is transmitted to the display through the switcher.

Inventors

HUANG YANQING

Assignees

宏正自动科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20241225
Priority Date: 20241112

Claims (9)

1. A fast port switching method for a switch electrically connected to a first image source, a second image source and a display, the first image source and the second image source supporting a digital image protocol, the fast port switching method comprising the steps of: outputting an image signal of the first image source to the display through the switcher; when the switcher receives the switching signal to switch and select the image signal of the second image source to output to the display, the switcher inquires the version information of the digital image protocol from the second image source and does not inquire the display to extend display identification information, and The version information is transmitted to the display through the switcher.
2. The method of claim 1, wherein the switch is a KVM switch or an AV switch.
3. The method of claim 1, wherein the switch further comprises a switching unit and a control unit, the switching unit is electrically connected to the first image source and the second image source, the control unit is electrically connected to the display and the switching unit, and when the switch receives the switching signal to switch and select to output the image signal of the second image source to the display, the method further comprises the following steps: transmitting the switching signal to the control unit; When the control unit receives the switching signal, inquiring the second image source about the version information through the switching unit, and not inquiring the display for the extended display identification information; the control unit receives the version information returned by the second image source through the switching unit and transmits the version information to the display.
4. The method of claim 3, wherein the switching unit and the control unit are integrated into a single control chip.
5. The method of claim 1, wherein the switching device is configured to transmit the version information to the display, and further comprising transmitting status and control data channel information corresponding to the version information to the display.
6. A kind of switching device, which is used to switch the switching device, characterized by comprising the following steps: A switching control module; a plurality of input ports electrically connected to the switching control module, the plurality of input ports electrically connected to a first image source and a second image source, the first image source and the second image source supporting a digital image protocol, and An output port electrically connected to the switching control module and the display; When the switching control module receives a switching signal at a second time point to switch and select to output the image signal of the second image source to the display, the switching control module inquires version information about the digital image protocol from the second image source and does not inquire supported extended display identification information from the display, and the switching control module transmits the version information to the display.
7. The switch of claim 6, wherein the switch is a KVM switch or an audio/video switch.
8. The switcher of claim 6, wherein the switching control module further comprises a switching unit and a control unit, the switching unit is electrically connected with the first image source and the second image source, the control unit is electrically connected with the display and the switching unit, when the switching control module receives the switching signal at the second time point to switch and select to output the image signal of the second image source to the display, the control unit receives the switching signal, inquires about the version information from the second image source through the switching unit, and does not inquire about the extended display identification information supported by the display, and the control unit receives and transmits the version information returned by the second image source to the display through the switching unit.
9. The switch of claim 8, wherein the control unit further transmits status and control data channel information corresponding to the version information to the display.

Description

Fast port cutting method Technical Field The present application relates to a switching technology, and more particularly, to a fast port switching method and a switch. Background Please refer to fig. 1A, which is a schematic diagram of a conventional multimedia switching system architecture. The conventional multimedia switching system 1 includes a switch 10, a plurality of video sources 11 a-11 c, and a multimedia output device 12. The audio/video sources 11 a-11 c are electrically connected to the input ports of the switch 10, and the multimedia output device 12 is electrically connected to the output ports of the switch 10. The switch 10 switches and selects one of the video sources 11a to 11c, for example, the video source 11a is coupled to the multimedia output device 12, so that the multimedia output device 12 can receive the multimedia signal from the video source 11a and output the video and the audio. As shown in fig. 1B, in the conventional technology, when the switch 10 switches to select the audio/video sources 11a to 11c, for example, the switch 10 receives a switching signal, and then the switch 10 sends a signal for inquiring the extended display identification information (Extended Display Identification Data, EDID) to the multimedia output device 12. Thereafter, the multimedia output device 12 transmits the EDID information back to the switch 10. In this switching process, for example, if the selected audio/video source supports the HDMI 2.0 version, the switch 10 also transmits the status and control data channel (Status and Control DATA CHANNEL, SCDC) information of the selected audio/video source to the multimedia output device 12. The time required for exchanging EDID and SCDC information is 1-2 seconds. Therefore, each time the video sources 11a to 11c are selected, a delay of about 1 to 2 seconds is required from the start to the completion of the switching, and then the multimedia information is output to the multimedia output device 12 after the switching is completed. Referring to fig. 1C, in the architecture of a serial (cascade) switch system, since the number of stages of the serial connection of the switches 10 a-10C is increased, the delay is increased by several times to output the multimedia information to the multimedia output device 12, which causes visual impact to the user. In view of the foregoing, there is a need for a fast port switching method to solve the problems of the prior art. Disclosure of Invention The application provides a fast port switching method and a switcher, which only inquires multimedia version information from a selected image source when the switcher selects the source, but does not inquire EDID information from a downstream display, so that delay time of drawing is greatly reduced, and the effect of fast switching selection is achieved. In one embodiment, the present application provides a fast port switching method for a switch electrically connected to a first image source, a second image source and a display, the first image source and the second image source supporting a digital image protocol, the method comprising outputting an image signal of the first image source to the display via the switch, then, when the switch receives a switching signal to switch selecting to output the image signal of the second image source to the display, the switch inquires version information about the digital image protocol to the second image source and does not inquire extended display identification information to the display, and transmitting the version information to the display via the switch. In one embodiment, the application provides a switcher comprising a switching control module, a plurality of input ports, an output port and an output port, wherein the plurality of input ports are electrically connected with the switching control module, the plurality of input ports are respectively electrically connected with a first image source and a second image source, the first image source and the second image source support a digital image protocol, the output port is electrically connected with the switching control module and a display, the switching control module outputs an image signal of the first image source to the display at a first time point, and when the switching control module receives a switching signal at a second time point to switch and select to output an image signal of the second image source to the display, the switching control module inquires the second image source about version information related to the digital image protocol and does not inquire the display about supported extended display identification information, and the switching control module transmits the version information to the display. Drawings The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and togeth