CN220234765U

CN220234765U - Multipath video converter

Info

Publication number: CN220234765U
Application number: CN202321475276.6U
Authority: CN
Inventors: 何明修
Original assignee: Kunshan Desaipusi Electronic Technology Co ltd
Current assignee: Kunshan Desaipusi Electronic Technology Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2023-12-22
Anticipated expiration: 2033-06-12

Abstract

The utility model discloses a multipath video converter which comprises a video processing chip A, a video processing chip B and a main control chip, wherein the input end of the video processing chip A is respectively connected with an AV interface, a VGA interface and a YPbPr interface, the output end of the video processing chip A is connected with the input end of the video processing chip B, the output end of the video processing chip B is connected with an HDMI output terminal, and the main control chip is respectively connected with the video processing chip A and the video processing chip B. The utility model realizes the selective input and conversion of multiple paths of video signals with different formats, thereby avoiding the defects caused by continuous plugging.

Description

Multipath video converter

Technical Field

The utility model relates to the field of video conversion, in particular to a multipath video converter.

Background

The current video converter has very wide product application fields. But most of the video converters in the market generally use a single-channel video converter (i.e. one-channel video input is converted into one-channel video output in other formats). However, in some special scene applications, there are different kinds of video input signals, and different single-channel video converters are needed to be connected for display, and when the different video converters are used, the different video converters on the output port need to be repeatedly plugged and unplugged, so that the use is time-consuming and labor-consuming, the output port is worn due to multiple plugging and unplugging, and the service life of the output port is reduced. A multiple video converter module is avoided.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a multi-channel video converter which can realize the selective input and conversion of multi-channel video signals with different formats, thereby avoiding the defects caused by continuous plugging.

In order to achieve the above purpose, the present utility model proposes the following technical scheme: the utility model provides a multichannel video converter, includes video processing chip A, video processing chip B and main control chip, video processing chip A's input is connected with the AV interface respectively, VGA interface and YPbPr interface, and video processing chip A's output connects video processing chip B's input, and video processing chip B's output connects HDMI output terminal, main control chip connects video processing chip A and video processing chip B respectively.

Preferably, the video processing chip a is MS1824, pin 3 is correspondingly connected to the AV interface, pins 26, 27, 18, 21, 23 are correspondingly connected to the VGA interface, and pins 5, 10, 14 are correspondingly connected to the YPbPr interface.

Preferably, the video processing chip B is MS7210, an input end of the video processing chip B is connected to an output end of the video processing chip a, and output end pins 21, 22, 24, 25, 26, 27, 29, 30 of the video processing chip B are correspondingly connected to HDMI output terminals.

Preferably, the master control chip is STM8S207K8, the pins 11, 12, 13 thereof are correspondingly connected with the video processing chip a, and the pins 17, 18, 19 thereof are correspondingly connected with the video processing chip B.

Compared with the prior art, the multi-channel video converter disclosed by the utility model supports the selection input of signals from 3 channels of different inputs, converts the signals into HDMI video signals for output, meets the scene requirement of multi-channel different video input display, solves the defect of back and forth plugging of the traditional single-channel video converter, has high integration degree, is simpler and more convenient for users in use operation and connection, and has lower cost.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is an overall schematic of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of signal trend according to an embodiment of the present utility model;

FIG. 3 is a schematic circuit diagram of an AV interface in an embodiment of the present utility model;

FIG. 4 is a schematic circuit diagram of a VGA interface according to an embodiment of the utility model;

FIG. 5 is a schematic circuit diagram of a YPbPr interface in accordance with an embodiment of the utility model;

FIG. 6 is a schematic circuit diagram of a video processing chip A according to an embodiment of the present utility model;

FIG. 7 is a schematic circuit diagram of a video processing chip B according to an embodiment of the present utility model;

fig. 8 is a schematic circuit diagram of a main control chip according to an embodiment of the utility model.

Description of the embodiments

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

The utility model discloses a multipath video converter which realizes the selection input of three paths of different types of video signals and converts the video signals into HDMI signals for output, and a principle framework is shown in figure 1, and the multipath video converter comprises a video processing chip A, a video processing chip B and a main control chip, wherein the input end of the video processing chip A is respectively connected with an AV interface, a VGA interface and a YPbPr interface, the output end of the video processing chip A is connected with the input end of the video processing chip B, the output end of the video processing chip B is connected with an HDMI output terminal, and the main control chip is respectively connected with the video processing chip A and the video processing chip B.

For the converter of the present utility model, the video signal conversion situation is shown in fig. 2, in which the AV signal input by the AV interface, the VGA signal input by the VGA interface, and the YPbPr signal input by the YPbPr interface are all converted into 16-bit digital signals by the video processing chip a, and then converted into HDMI signals by the video processing chip B, and sent to the HDMI output interface for display.

Specifically, the audio/video processing chip a processes an input video signal and converts the processed video signal into a digital signal for output, as shown in fig. 3-6, a specific connection circuit is shown, the input pin 3 of the audio/video processing chip a is correspondingly connected to the pin 1 of the AV interface J1, the input pins 26, 27, 18, 21, 23 of the audio/video processing chip a are correspondingly connected to the pins 14, 13, 3, 2, 1 of the VGA interface J2, the input pins 5, 10, 14 of the audio/video processing chip a are correspondingly connected to the pins 1, 3, 5 of the YPbPr interface J3, and the output pins 83, 84, 85, 86, 87, 88, 89, 90, 91, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107 of the video processing chip B are correspondingly connected to the input pins 64, 63, 51, 62, 61, 60, 59, 58, 57, 55, 54, 53, 52, 50, 49, 48, 47, 46, 45, 44 of the video processing chip B.

The audio/video processing chip B processes the input digital signal and converts the processed digital signal into an HDMI signal for output, as shown in fig. 7, and the specific connection circuit is shown in fig. 7, where the input pins 64, 63, 51, 62, 61, 60, 59, 58, 57, 55, 54, 53, 52, 50, 49, 48, 47, 46, 45, 44 are correspondingly connected to the output pins 83, 84, 85, 86, 87, 88, 89, 90, 91, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107 of the video processing chip a, and the output pins 21, 22, 24, 25, 26, 27, 29, 30 are correspondingly connected to the pins 12, 10, 9, 7, 6, 4, 3, 1 of the HDMI output terminal J4.

The main control chip is used for receiving control signals sent by external infrared remote control equipment, controlling the video processing chip A and the video processing chip B to select corresponding video signals to input and process and output according to the control signals, the model of the main control chip is STM8S207K8, a specific circuit is shown in FIG. 8, pins 11, 12 and 13 of the main control chip are correspondingly connected with pins 70, 69 and 68 of the video processing chip A, and pins 17, 18 and 19 are correspondingly connected with pins 33, 11 and 12 of the video processing chip B.

The multipath video converter disclosed by the utility model supports selection input of signals from 3 paths of different inputs, and converts the signals into HDMI video signals for output, so that the scene requirements of multipath different video input display are met.

While the foregoing has been disclosed in the specification and drawings, it will be apparent to those skilled in the art that various substitutions and modifications may be made without departing from the spirit of the utility model, and it is intended that the scope of the utility model be limited not by the specific embodiments disclosed, but by the appended claims.

Claims

1. A multiple video converter, characterized by: the video processing device comprises a video processing chip A, a video processing chip B and a main control chip, wherein the input end of the video processing chip A is respectively connected with an AV interface, a VGA interface and a YPbPr interface, the output end of the video processing chip A is connected with the input end of the video processing chip B, the output end of the video processing chip B is connected with an HDMI output terminal, and the main control chip is respectively connected with the video processing chip A and the video processing chip B.

2. The multiple video converter of claim 1, wherein: the model of the video processing chip A is MS1824, the pin 3 is correspondingly connected with an AV interface, the pins 26, 27, 18, 21 and 23 are correspondingly connected with a VGA interface, and the pins 5, 10 and 14 are correspondingly connected with a YPbPr interface.

3. The multiple video converter of claim 1, wherein: the model of the video processing chip B is MS7210, the input end of the video processing chip B is connected with the output end of the video processing chip A, and the output end pins 21, 22, 24, 25, 26, 27, 29 and 30 are correspondingly connected with HDMI output terminals.

4. The multiple video converter of claim 1, wherein: the master control chip is STM8S207K8, pins 11, 12 and 13 of the master control chip are correspondingly connected with the video processing chip A, and pins 17, 18 and 19 of the master control chip are correspondingly connected with the video processing chip B.