CN107222688B

CN107222688B - 32-path picture polling display system and method

Info

Publication number: CN107222688B
Application number: CN201710463896.0A
Authority: CN
Inventors: 胡子智; 胡宏清; 陈增旺
Original assignee: Xiamen Rgblink Science & Technology Co ltd
Current assignee: Xiamen Rgblink Science & Technology Co ltd
Priority date: 2017-06-19
Filing date: 2017-06-19
Publication date: 2023-03-03
Anticipated expiration: 2037-06-19
Also published as: CN107222688A

Abstract

The invention discloses a 32-path picture polling display system and a display method, which comprises a front-end image synthesis module, a high-speed matrix module, an output circuit module, a data format conversion module and a multi-layer processing chip, wherein 32 paths of independent video sources are connected into 32 video input interfaces, and two paths of signals are output after processing, wherein one path of signals is 32 paths of real-time full-picture signals, and the other path of signals is polling selection signal output of the 32 paths of signals. The invention can monitor 32-channel pictures in real time, solves the problem of automatic switching of 1080P high-definition pictures by timing polling, solves the problem of manual operation, can manually adjust the automatic switching time, and has clearer picture quality.

Description

Display system and method for 32-path picture polling

Technical Field

The present invention relates to the field of video processing technologies, and in particular, to a display system and method for 32-way picture polling.

Background

In a working site of the LED display screen, multi-picture switching is often required to switch a plurality of video pictures to the LED display screen for display, the images generally come from a plurality of on-site cameras, or video programs scheduled in advance, or images played by a computer, and the sources of the video signals can reach dozens or even dozens. The existing LED video switching device comprises a front-end video switching matrix unit, two video processing units and an output switching unit, wherein the front-end video switching matrix unit can be accessed to multi-channel video signals with various formats, the front-end video switching matrix unit is provided with two output ports which are respectively connected to the input ends of the two video processing units, the output switching unit is provided with two input ports which are respectively connected to the output ends of the two video processing units, meanwhile, the output switching unit comprises two video output ends which are respectively connected to an LED display screen and a pre-monitoring display screen during use, and when the LED video switching device is used, the two video processing units which are arranged in parallel inside the LED video switching device respectively process videos of one video output port, namely, videos output by the pre-monitoring port and a main display port are respectively processed. The working process of the system is divided into 2 steps, firstly, images needing to be displayed on an LED screen are switched to a pre-monitoring channel in advance, after the images are stabilized after signal identification and time sequence reconstruction processes, a broadcasting guide operator operates a key to send a switching instruction, and the pre-monitoring images at the moment are switched to a main display port for the LED screen to display. The prior art has the problems that a director cannot quickly select a desired signal source, and for a field program, because a plurality of signal sources may come from cameras at different angles, the director can capture an ideal picture in real time only under the condition that a plurality of scenes on the field can be monitored by the director at the same time, but the existing LED video switching station cannot allow the director to see all pictures at the same time, and only can switch a plurality of input signals one by one on a pre-monitoring channel to search for a desired scene, or by means of memory operation, so that the real-time wonderful moment of the program field is difficult to capture, and obviously, the prior art has the need of further improvement.

Disclosure of Invention

The invention aims to provide a display system and a display method for 32-way picture polling, which can monitor 32-way pictures in real time and automatically switch 32-way pictures in a timing polling mode, thereby solving the trouble of manual operation.

In order to achieve the above purpose, the solution of the invention is:

a32-channel picture polling display system comprises a front-end image synthesis module, a high-speed matrix module, an output circuit module, a data format conversion module and a multi-layer processing chip, wherein the front-end image synthesis module, the high-speed matrix module, the output circuit module, the data format conversion module and the multi-layer processing chip are respectively arranged on a board card and connected with a main control chip, the board card is provided with a plurality of video signal input interfaces connected to the front-end image synthesis module and at least two output interfaces connected to a display, 32 independent video sources are connected into 32 video input interfaces, the 32 independent video sources are divided into 8 four-channel picture preprocessing modules through the front-end image synthesis module, synthesizing 8-path high-speed channel signals through a high-speed matrix module, outputting the signals through a high-speed matrix, further performing signal driving and clock restoration, connecting the signals to a data format conversion module through an output circuit module, converting TMDS (transition data storage system) into 30BIT (BIT-to-BIT) TTL (transistor-transistor logic) signals, sending the TTL signals into a multi-layer processing chip, and performing two-aspect processing on image data sent by the 8-path high-speed channel by the multi-layer processing chip; on the other hand, image data sent into the multi-layer processing chip by the 8-path high-speed channel is divided, the divided images are amplified, the image quality is adjusted, and 32-path image switching is carried out in another output interface at a specified time under the control of the main control chip, so that automatic round-robin is realized.

The high-speed matrix module is a 4.5G digital signal switching matrix, AND the chip model of the high-speed matrix module is AND46XX.

A display method for realizing 32-path picture polling comprises the following steps:

step 1: 32 independent video sources are connected into 32 video input interfaces;

step 2: dividing the 32-path signals into 8 groups of four-picture signals by a front-end image synthesis module and sending the four-picture signals to a high-speed matrix module;

and step 3: the high-speed matrix module synthesizes 8 groups of four-picture signals into 8-channel high-speed channel signals, performs signal drive enhancement and clock restoration, and then transmits the 8-channel high-speed channel signals to the output circuit module;

and4, step 4: the output circuit module transmits 8-path high-speed channel signals to the data format conversion module, converts the TMDS format into 30bit TTL signals and transmits the TTL signals to the multi-layer processing chip;

and 5: the multi-layer processing chip carries out two-aspect processing on the transmitted image data, on one hand, carries out layer merging and reduction processing on the transmitted image signals, simultaneously carries out adjustment on the image quality of the image, sends 32 paths of merged signals into an H.264 coding circuit, packs the network protocol and sends out the merged signals through an output interface; on the other hand, the multi-layer processing chip divides the image data sent by the 8-path high-speed channel, amplifies the divided image, adjusts the image quality, and controls to perform 32-path image round-robin switching display in another output interface at a specified time through the main control chip.

By adopting the scheme, the 32-path picture polling display system can realize real-time monitoring of 32-path pictures and automatic switching of 1080P high-definition pictures by adopting 32-path polling, and solves the trouble of manual operation. Compared with the existing display mode, the invention can display and round the number of the paths, the automatic switching time can be manually adjusted, 2 seconds to 1 hour, and the image quality is clearer by using the image quality restoration algorithm.

Drawings

Fig. 1 is a schematic frame flow diagram of a display system according to the present invention.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

As shown in fig. 1, the present invention will be described in detail by specific examples in order to further explain the technical solution of the present invention.

As shown in fig. 1, the present invention discloses a 32-channel picture polling display system, which includes a front-end image synthesis module 1, a high-speed matrix module 2, an output circuit module 3, a data format conversion module 4, AND a multi-layer processing chip 5, where the front-end image synthesis module 1, the high-speed matrix module 2, the output circuit module 3, the data format conversion module 4, AND the multi-layer processing chip 5 are respectively disposed on a board card AND connected to a main control chip, the high-speed matrix module 2 is a 4.5G digital signal switching matrix, AND the chip model thereof is AND46XX. The integrated circuit board is provided with a plurality of video signal input interfaces connected to a front-end image synthesis module 1 and at least two output interfaces connected to a display, 32 independent video sources are connected into 32 video input interfaces, the 32 independent video sources are divided into 8 four-picture preprocessing modules through the front-end image synthesis module 1, then 8 high-speed channel signals are synthesized through a high-speed matrix module 2 and output through a high-speed matrix, the signals are further driven and subjected to clock reduction and then connected into a data format conversion module 4 through an output circuit module 3, TMDS (transition data technology Standard) is converted into 30BIT (BIT-to-BIT) TTL (transistor-transistor logic) signals and sent into a multi-picture layer processing chip 5, the multi-picture layer processing chip 5 carries out two-aspect processing on image data sent by the 8 high-speed channels, on one hand, the multi-picture layer processing chip carries out picture layer merging and reduction processing on the merged picture signals, and simultaneously carries out image quality adjustment on the 32 merged signals and sends out the merged signals through at least one output interface after network protocol packaging; on the other hand, the image data sent to the multi-layer processing chip 5 by the 8-path high-speed channel is divided, the divided images are amplified, the image quality is adjusted, and 32-path image switching is carried out in another output interface at a specified time through the control of the main control chip, so that automatic round-robin is realized.

The invention also discloses a 32-path picture polling display method, which comprises the following steps:

and 3, step 3: the high-speed matrix module synthesizes 8 groups of four-picture signals into 8-channel high-speed channel signals, performs drive enhancement and clock restoration of the signals, and then transmits the 8-channel high-speed channel signals to the output circuit module;

and 5: the multi-layer processing chip carries out two-aspect processing on the transmitted image data, on one hand, the layer merging and the reduction processing are carried out on the transmitted image signals, and simultaneously, the image quality is adjusted, 32 paths of merged signals are sent into an H.264 coding circuit, and the merged signals are sent out through an output interface after network protocol packaging is carried out; on the other hand, the multi-layer processing chip divides the image data sent by the 8-path high-speed channel, amplifies the divided image, adjusts the image quality, and controls to perform 32-path image round-robin switching display in another output interface at a specified time through the main control chip.

The above embodiments and drawings are not intended to limit the form and style of the product of the present invention, and any suitable changes or modifications thereof by one of ordinary skill in the art should be considered as not departing from the scope of the present invention.

Claims

1. A32-channel picture polling display system is characterized by comprising a front-end image synthesis module, a high-speed matrix module, an output circuit module, a data format conversion module and a multi-layer processing chip, wherein the front-end image synthesis module, the high-speed matrix module, the output circuit module, the data format conversion module and the multi-layer processing chip are respectively arranged on a board card and are connected with a main control chip, the board card is provided with a plurality of video signal input interfaces connected to the front-end image synthesis module and at least two output interfaces connected to a display, 32 independent video sources are connected into the 32 video input interfaces, the 32 independent video sources are divided into 8 four-picture preprocessing modules through the front-end image synthesis module, synthesizing 8-path high-speed channel signals through a high-speed matrix module, outputting the signals through a high-speed matrix, further performing signal driving and clock restoration, connecting the signals to a data format conversion module through an output circuit module, converting TMDS (transition minimized binary system) into a TTL (transistor-transistor logic) signal of 30BIT, sending the TTL signal into a multi-layer processing chip, performing two-aspect processing on image data sent by the 8-path high-speed channel by the multi-layer processing chip, performing layer merging and reduction processing on merged image signals by the multi-layer processing chip on one hand, adjusting image quality of the image, sending the merged 32-path signals into an H.264 coding circuit, packaging a network protocol, and sending out the merged signals through at least one output interface; on the other hand, image data sent into the multi-layer processing chip by the 8-channel high-speed channel is divided, the divided images are amplified, the image quality is adjusted, and 32-channel image switching is performed in another output interface at a specified time through the control of the main control chip, so that automatic round-robin is realized.

2. The display system of a 32-way picture round robin according to claim 1, wherein: the high-speed matrix module is a 4.5G digital signal switching matrix, AND the chip model of the high-speed matrix module is AND46XX.

3. A display method for realizing 32-path picture polling comprises the following steps:

step 2: dividing the 32-channel signals into 8 groups of four-picture signals through a front-end image synthesis module and sending the four-picture signals to a high-speed matrix module;