TW201513675A - Multiway video display control method and system - Google Patents

Abstract

The present invention provides a multiway video display control method and system, which is to adjust the resolution of the image recorded by a video recorder corresponding to the serial number of video recorder according to the number of split-screens that the user desires to watch and the serial number of the video recorder selected by the user. When there are numerous split-screens, reduce the resolution of the recorded image or the real-time image of each video recorder. When it is determined only a small number of split-screens, increase the resolution of the recorded image or the real-time image of each video recorder. Then the real-time image recorded by each video recorder is transmitted to a computer through the network, and displayed on the screen after decoding by computer, furthermore, each image data can be displayed clearly.

Description

Multi-channel video display control method and system

The invention relates to a video display control method and system, and more particularly to a multi-channel video display control method and system.

With the rapid development of today's technology, multimedia display devices are becoming larger and larger, and larger-sized display devices require higher-resolution image data to allow viewers to view large-sized display devices with clear image quality. Therefore, in order to respond to large-size display devices, the compression technology of high-resolution image data has matured and is widely used. For some specific applications, such as digital monitoring systems, when using multiple channels, it is necessary to simultaneously view multiple channels of high-resolution image data.

Decompression of high-resolution image data requires a lot of calculations to be completed. When decompressing multiple high-resolution image data at the same time, it is necessary to achieve a high-speed CPU. But the central processing unit with high computing speed is costly. In addition, high-resolution image data requires a large bandwidth when transmitting. If multiple high-resolution image data are transmitted into the system at the same time, the required bandwidth may be too large to be transmitted smoothly. As a result, image data cannot be instantly transferred to the system.

Further, when recording higher-resolution image data, the higher the file size of the higher-resolution image data, the higher the transmission speed required. If the high-resolution image is recorded on each of the divided screens of the monitoring screen of the monitoring system, when the image data is transmitted, the bandwidth is too large, resulting in a delay in the transmission of the data. Instant image data. In addition, the higher the resolution of the image data, the more calculations are required to complete the decoding during decoding and playback. If the calculation speed of the central processing unit of the computer is insufficient, the playback image will be delayed, so the prior art video display is performed. The control method needs to be further improved.

In view of the above disadvantages of the prior art, the main object of the present invention is to provide a multi-channel video display control method and system, so that multi-channel image data can not be transmitted smoothly because the required bandwidth is too large, and can be reduced at the same time. The amount of computation of the computer's central processing unit when the image data is decompressed.

In order to achieve the above object, the technical means adopted by the present invention is to enable the multi-channel video display control method to include the following steps: pre-setting a plurality of video recorder numbers and a plurality of display channel numbers; providing a display parameter setting interface for selecting a video Number of the machine and the number of displayed channels; confirm the number of the recorder and the number of channels selected by the display parameter setting interface; when judging that the number of selected channels is too large, lower the video of the recorder corresponding to the selected recorder number The resolution is adjusted, and when it is judged that the number of selected display channels is small, the video resolution of the video recorder corresponding to the selected video recorder number is increased; and the video data of the video recorder corresponding to the selected video recorder number is received; Decoding the image data; and playing the decoded image data according to the selected number of display channels.

In addition, the present invention also employs another technical means for achieving the above object, and the multi-channel video display control system includes: a plurality of video recorders for recording an image data; and a computer connected to the plurality of video recorders via the network. a line for receiving and playing the image data recorded by the plurality of video recorders, wherein the computer system comprises: a storage unit storing the video recorder number corresponding to each video recorder and the corresponding complex array video resolution, and storing The number of display channels corresponding to each video resolution; a processing unit provides a display parameter setting interface on a display, and an input unit selects a video recorder number and a display channel to be displayed on the display through the display parameter setting interface. After the processing unit confirms the selected number of the recorder and the number of displayed channels, the video recorder number and the video resolution corresponding to the number of the displayed channels are read in the storage unit according to the confirmed number of the recorder and the number of displayed channels. a network processing unit is established according to the video recorder number confirmed by the processing unit and the corresponding video recorder through the network a line, and the video resolution read by the processing unit is transmitted to the corresponding video recorder to read the image data recorded by the corresponding video recorder according to the video resolution, and transmitted back to the processing unit; and an image processing unit The image data received by the processing unit is decoded and transmitted to the display for playback.

In summary, the main purpose of the present invention is to reduce the resolution of video recording of each video recorder when the number of channels displayed at the same time is large, so as to reduce the file size of the video data, so that the multi-channel image data is transmitted. A large bandwidth is not required, and the amount of computation of the image processing unit when decoding each image data is reduced. When it is judged that the number of channels displayed at the same time is small, the resolution of the video recording of each video recorder is increased, so that high-quality image data can be transmitted to the display. When displaying images of multiple channels at the same time, because the size of one display is fixed, the more channels of the channel are displayed, the smaller the screen size displayed on the video screen of each channel, the smaller the display screen is not needed. The high-resolution image data can also clearly display the image image. Therefore, the present invention reduces the resolution of the recorded image data when judging that the number of display channels is large. However, when judging that the number of displayed channels is small, the resolution of the recorded image data must be increased to display a clear image. The use of the invention can reduce the computational complexity of the image processing unit and use less network bandwidth, so that each image data can be decoded and played in real time, without the calculation amount of the image processing unit being too large or the network bandwidth is insufficient. Causes delayed playback.

The technical means adopted by the present invention for achieving the intended purpose are further explained below in conjunction with the drawings and preferred embodiments of the present invention.

Referring to FIG. 1, the multi-channel video display control system of the present invention includes a computer 10 and a plurality of video recorders 30. The multi-channel video display control method is executed in the computer 10. The computer 10 is connected to the plurality of video recorders 30 via the network 20, and can transmit data to the plurality of video recorders 30 through the network 20, and the plurality of video recorders 30 can also transmit the recorded images through the network 20. The data is given to the computer 10, and the computer 10 can decode and play after receiving the image data.

Referring to FIG. 2, the multi-channel video display control method includes the following steps: pre-setting a plurality of video recorder numbers and a plurality of display channel numbers (S11); providing a display parameter setting interface to select a video recorder Number and display channel number (S12); confirm the number of the recorder and the number of channels to be displayed in the display parameter setting interface (S13); when judging that the number of selected channels (S14) is selected, lower the selected recorder The resolution and transmission speed of the video image or the real-time image of the video recorder corresponding to the number (S15); and when it is determined that the number of selected display channels is small, the video image of the video recorder corresponding to the selected video recorder number is increased Or the resolution and transmission speed of the instant image (S16); receiving the recorded video image of the recorder corresponding to the selected recorder number or the image data of the instant image (S17); decoding the image data (S18); And playing the decoded image data according to the selected number of display channels (S19).

For example, as shown in FIG. 5A, if the number of display channels selected by the user is four display channels, that is, a 2×2 divided screen, it means that the screen recorded by the four video recorders is simultaneously displayed, and the user is displayed by the user. Four recorder numbers are selected to indicate that four of the recorders are selected in the multi-channel video display control system. At this time, according to the number of display channels selected by the user and the number of the video recorder, the computer 10 lowers the resolution and transmission speed of the video image or the instant image of the video recorder corresponding to the video recorder number according to the video recorder number. And the image data corresponding to the video recorder 30 is transmitted back to the computer 10 for decoding and playing through the network 20. The video image refers to the image data previously recorded and stored by the plurality of video recorders 30, and the live video image refers to the image data currently being recorded by the plurality of video recorders 30.

As shown in FIG. 5B, if the number of display channels selected by the user is one display channel, it means that only the picture recorded by one video recorder is displayed at the same time, and the user selects a video recorder number to indicate that it is in multiple channels. One of the video recorders is selected in the video display control system. At this time, the computer 10 increases the video resolution and transmission speed of the video recorder corresponding to the video recorder number according to the number of display channels selected by the user and the video recorder number, and transmits the video resolution through the network 20 according to the video recorder number. The image data corresponding to the video recorder 30 is returned to the computer 10 for decoding and playback.

Referring to FIG. 3, a preferred embodiment of the present invention further includes a new video recorder program for adding a video recorder to the system of the preferred embodiment of the present invention via the network 20, wherein the new video is added. The computer program includes the following steps: connecting to each unconnected video recorder through the network (S21); reading the video recorder number corresponding to the video recorder and the complex array video resolution and complex array transmission that can be recorded Speed (S22); and storing the video recorder number corresponding to the video recorder and the complex array video resolution and complex array transmission speed (S23) that can be recorded.

Referring to FIG. 4, the computer 10 in the system of the preferred embodiment includes a storage unit 11, an input unit 12, a processing unit 13, a network processing unit 14, an image processing unit 15, and a display. 16. The storage unit 11 stores the video recorder number corresponding to each video recorder 30, the corresponding complex array video resolution and the complex array transmission speed, and stores the number of display channels corresponding to each video resolution. When the user wants to use the present invention to view the screen of the video recorder 30, the number of the recorder and the number of display channels to be displayed on the display 16 are selected through the input parameter unit through a display parameter setting interface. The processing unit 13 provides the display parameter setting interface on the display 16, and confirms the number of the recorder and the number of displayed channels selected by the user after the input unit 12 selects the number of the recorder and the number of displayed channels. The memory unit 11 reads the video recorder number and the video resolution corresponding to the number of the display channels. The network processing unit 14 establishes a connection with the corresponding video recorder 30 through the network 20 according to the video recorder number confirmed by the processing unit 13, and transmits the video resolution read by the processing unit 13 to the corresponding video recorder. 30. The video data recorded by the corresponding video recorder 30 according to the video resolution or the video data of the instant image is read and transmitted back to the processing unit 13. The image display unit 15 decodes the video data of the video recorder 30 received by the processing unit 13, and transmits the video data to the display 16 for playback.

Further, the system of the present invention can add a video recorder 30 that has not been connected to the computer 10. When a new video recorder 30 that is not connected to the computer 10 is added, the processing unit 13 first passes through the network processing unit 14. Connected to each of the video recorders 30 that are not yet connected to the computer 10, and the network processing unit 14 reads the video recorder number corresponding to the video recorder 30 and the complex array video resolution and complex array transmission speed that can be recorded. And sent to the processing unit 13, the processing unit 13 stores the video recorder number and the complex array video resolution and the complex array transmission speed that can be recorded, and stores the data to the storage unit 11.

The computer 10 has a built-in complex array display channel number. For example, the number of display channels can be 1 (1×1), 4 (2×2), 9 (3×3), 16 ( 4 × 4) or 24 (4 × 6). For example, as shown in FIG. 5A, if the number of display channels selected by the user is 4 (2×2 divided screens), the pictures recorded by the four video recorders are simultaneously displayed, and further by the user. Four video recorder numbers are selected, that is, four of the video recorders 30 are selected in the multi-channel video display control system. At this time, the computer 10 reads the video resolution and the transmission speed corresponding to the video recorder number and the number of display channels according to the number of display channels selected by the user and the video recorder number, and then transmits the network through the network. 20 is transmitted to the corresponding video recorder 30 to read the video image of the corresponding video recorder 30 corresponding to the video resolution or the video image of the instant video, and then transmitted back to the computer 10 for decoding and playing. In the preferred embodiment, CH1~CH4 in FIG. 5A are respectively screens of four video recorders of different video recorder numbers, and the resolution is 640×480 (SD), and the transmission speed is 1 Mbps.

Please refer to FIG. 5B, but if the number of display channels selected by the user is 1 (1×1), it means that only one video recorder screen is to be displayed, because the display is displayed on the same display, the size of the display is fixed. However, the picture size is not divided, only one picture is to be displayed, so the higher resolution image data must be required to be displayed clearly. Therefore, the computer 10 according to the number of display channels and the video recorder number from the storage unit After reading the video resolution and the transmission speed corresponding to the number of the recorder and the number of display channels, the video is transmitted to the corresponding video recorder 30 through the network 20 to read the corresponding recording of the corresponding video recorder 30. The video image of the video resolution or the image data of the instant image is transmitted back to the computer 10 for decoding and playing. In the preferred embodiment, the resolution of CH1 in FIG. 5B is 1920×1080 (FULL HD), and the transmission speed is 4 Mbps.

The prior art video recorder 30 can record images of various resolutions, but the types of resolutions that can be recorded are different. For example, some video recorders can record 1280×720 resolution images, but some video recorders. However, the resolution picture of 1280×720 cannot be recorded, and the closest resolution picture of the video recorder 30 is 1280×1024. Because the resolution of the prior art video data is cumbersome, the prior art video recorders generally cannot record image data of all resolution types. Therefore, when using this method, the plural numbers that can be recorded by each video recorder 30 in the system are used. The group video resolution and the corresponding transmission speed are first stored in the storage unit 11 in the computer 10, and are respectively established according to the resolution of the complex array video record that each video recorder 30 can record and the number of display channels of the complex array that the computer 10 can display. A table of video resolution and display channel number. The video resolution and the number of display channels correspond to the number of complex array display channels and their corresponding video resolutions, that is, each set of different display channel numbers corresponds to a set of video resolutions. When the user selects the video recorder 30 and the number of display channels, the computer 10 reads the video analysis in the corresponding table of the video resolution and the number of display channels corresponding to each video recorder 30 according to the selected video recorder 30 and the number of display channels. The degrees and their corresponding transmission speeds are transmitted to the corresponding video recorders 30 to set the video resolution of the video recorder 30. In the video resolution and display channel number correspondence table, the higher the video resolution corresponds to the smaller the number of display channels, and the lower the video resolution corresponds to the more the number of display channels.

In summary, the present invention provides different adjustments to the video resolution of each video recorder 30 when the user wants to display a plurality of divided screens on the display 16. When the number of divided screens is large, the size of each divided screen is reduced. Therefore, it is not necessary to play high-resolution image data, and a clear picture can be displayed in each divided picture, so when the number of divided pictures is large, the number is reduced. The resolution of the video image or the timely image of each video recorder 30 is provided to provide lower resolution image data, thereby not only saving the calculation amount of the image data during encoding and decoding, but also reducing the size of the image data. When the multi-channel video recorder transmits the image data at the same time, the data volume is not too large, and the bandwidth is insufficient, causing a delay in transmission, or when the computer 10 decodes each image data because the calculation amount is too large, and the The computing power of the computer 10 is insufficient for the playback delay caused by instant decoding. When the present invention is used to monitor a fixed area, if the instant image data cannot be viewed, the main purpose of knowing the message at the first time and processing it immediately is lost. It is therefore a primary object of the present invention to accomplish the instant playback of the multiplexer 30 on the display 16 with limited resources.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and A person skilled in the art can make some modifications or modifications to equivalent embodiments by using the above-disclosed technical contents without departing from the technical scope of the present invention. The present invention is not limited to any simple modifications, equivalent changes and modifications of the above embodiments.

10‧‧‧ computer
11‧‧‧ storage unit
12‧‧‧ input unit
13‧‧‧Processing unit
14‧‧‧Network Processing Unit
15‧‧‧Image Processing Unit
16‧‧‧ display
20‧‧‧Network
30‧‧‧Video recorder

1 is a schematic illustration of a system in accordance with a preferred embodiment of the present invention. 2 is a flow chart of a method of a preferred embodiment of the present invention. 3 is a flow chart of a new video recorder program in accordance with a preferred embodiment of the present invention. 4 is a block diagram of a system in accordance with a preferred embodiment of the present invention. 5A and 5B are schematic views of a display screen to which a preferred embodiment of the present invention is applied.

Claims (12)

A multi-channel video display control method includes the steps of: pre-setting a plurality of video recorder numbers and a plurality of display channel numbers; providing a display parameter setting interface to select a video recorder number and a display channel number; and confirming the display parameter setting interface The selected video recorder number and the number of display channels; when judging that the number of selected display channels is large, the video resolution of the video recorder corresponding to the selected video recorder number is lowered, and the number of selected display channels is determined to be small. And increasing the video resolution of the video recorder corresponding to the selected video recorder number; receiving the video data of the video recorder corresponding to the selected video recorder number; decoding the video data; and according to the selected number of display channels , playing the decoded image data. The multi-channel video display control method of claim 1, wherein the video data transmission speed is further lowered while the video resolution is lowered, and the transmission is performed according to the transmission speed; The recording speed of the image data is further increased while the video resolution is increased, and when the image data is transmitted, the transmission is performed according to the transmission speed. The multi-channel video display control method according to claim 1 or 2, further comprising a table corresponding to the video resolution and the display channel number, wherein the video resolution and the display channel number correspondence table comprise a plurality of display channels and a number of channels Corresponding to the video resolution of the video recorder, the corresponding video resolution is selected based on the video resolution and the display channel number correspondence table and the confirmed number of display channels. The multi-channel video display control method according to claim 1 or 2, further comprising a new video recorder program, comprising the steps of: connecting to each unconnected video recorder through the network; reading the video The number of the recorder corresponding to the machine and the resolution of the complex array video that can be recorded; and the number of the recorder corresponding to the recorder and the resolution of the complex array that can be recorded. The multi-channel video display control method according to claim 4, wherein the new video recorder program further comprises a complex array transmission speed for reading and storing the video recorder, wherein each transmission speed is respectively corresponding to a group of video resolutions. degree. The multi-channel video display control method according to claim 1 or 2, wherein the adjusted video resolution is a resolution of the video image or a resolution of the instant image. A multi-channel video display control system includes: a plurality of video recorders for recording an image data; and a computer connected to the plurality of video recorders via the network to receive image data recorded by the plurality of video recorders and play The computer system includes: a storage unit, which stores the video recorder number corresponding to each video recorder and the corresponding complex array video resolution, and stores the number of display channels corresponding to each video resolution; a processing unit Providing a display parameter setting interface on a display, wherein an input unit selects a video recorder number and a display channel number to be displayed on the display through the display parameter setting interface; the processing unit confirms the selected video recorder number and display channel After the number, according to the confirmed video recorder number and the number of display channels, the video recorder number and the video resolution corresponding to the number of display channels are read in the storage unit; a network processing unit is based on the video confirmed by the processing unit The machine number and the corresponding video recorder establish a connection through the network, and transmit the video resolution read by the processing unit to The video recorder is configured to read the video data recorded by the corresponding video recorder according to the video resolution and transmit it back to the processing unit; and an image processing unit that decodes the image data received by the processing unit and transmits the image data to the image processing unit. The display plays. The multi-channel video display control system of claim 7, wherein the storage unit further stores a complex array transmission speed corresponding to each video recorder, and the processing unit reads the corresponding transmission speed while reading the video resolution. And the network processing unit transmits the data according to the read transmission speed when transmitting the data. The multi-channel video display control system according to claim 7 or 8, wherein the storage unit of the computer further stores a correspondence table between the video resolution and the display channel number, and the corresponding table of the video resolution and the display channel number includes a plurality of The group displays the number of channels and the video resolution of the corresponding video recorder, and the processing unit reads the corresponding video resolution according to the video resolution and the display channel number correspondence table and the confirmed display channel number. The multi-channel video display control system of claim 7 or 8, wherein the processing unit is connected to each of the video recorders that have not joined the system through the network processing unit; wherein the network processing unit reads the video recorder Corresponding video recorder number and the resolution of the complex array video record that can be recorded; and the storage unit stores the video recorder number corresponding to the video recorder and the resolution of the complex array video record that can be recorded. The multi-channel video display control method of claim 10, wherein the network processing unit further reads a transmission speed corresponding to the video resolution of each video recorder, and the storage unit stores the transmission speed. The method of controlling the multi-channel video display according to claim 7 or 8, wherein the image data read by the network processing unit is image data of the video image or image data of the instant image.