Method for connecting edid equipment and edid information transmission channel
A technology of information transmission and equipment, applied in the field of audio and video processing, can solve problems such as EDID information conflict, and achieve the effect of avoiding EDID information conflict
Active Publication Date: 2022-03-01
HANGZHOU HIKVISION DIGITAL TECH
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[0003] In view of this, the present application provides a method for connecting EDID devices and EDID information transmission channels to solve the problem of EDID information conflicts in the prior art when multiple source devices are connected to signal source acquisition and video recording devices at the same time
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[0058] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.
[0059] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...
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The present application provides an EDID device and a method for connecting an EDID information transmission channel. EDID equipment, including: a video signal processing conversion chip, multiple external interfaces for accessing external source equipment, a switch switching module, a controller and a detection circuit; the switching switching module is connected between the external interface and the video signal processing conversion chip ; The controller is connected to the switch module; the detection circuit is connected between the specified interface in the external interface and the controller; the detection circuit is used to detect whether the specified interface is connected to an external source device, and sends the detection result to the controller; The device is used to receive the detection result from the detection circuit, and according to the detection result, control the switch switching module to turn on the EDID information transmission channel between one of the external interfaces and the video signal processing conversion chip. The conduction method of the EDID device and the EDID information transmission channel provided by this application can avoid the EDID information conflict caused when multiple external source devices access the EDID device at the same time.
Description
technical field [0001] The present application relates to the technical field of audio and video processing, and in particular to an EDID (Extended Display Identification Data, EDID for short) device and a method for conducting an EDID information transmission channel. Background technique [0002] In some application scenarios, signal source acquisition and recording devices are usually connected to multiple source devices at the same time. For example, during the debugging process of the hard disk video recorder, the user did not operate as required, and simultaneously connected two source devices to the hard disk video recorder. At this time, in order to transmit appropriate audio and video signals to the hard disk video recorder, both source devices need to obtain the EDID information of the hard disk video recorder. However, when these two source devices are connected to the DVR at the same time, the two source devices read EDID information from the DVR at the same tim...
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IPC IPC(8): H04N5/765H04N5/268
Inventor 陈翰沫
Owner HANGZHOU HIKVISION DIGITAL TECH