Video display device, video display method, and video signal processing device
阅读说明:本技术 视频显示装置、视频显示方法和视频信号处理装置 (Video display device, video display method, and video signal processing device ) 是由 砂流博志 于 2018-02-16 设计创作,主要内容包括:作为本发明的示例方面的视频显示装置包括:输入单元,该输入单元接收表示通过对输出图像进行分割而获得的多个分割图像的多个分割视频信号的输入,并获取分割视频信号中的每个分割视频信号的信号信息;视频信号处理单元,该视频信号处理单元对多个分割视频信号应用处理,并生成表示通过组合分割图像而获得的图像的输出视频信号;控制单元,该控制单元从输入单元获取信号信息,并将与处理有关的控制信号供给到视频信号处理单元;以及显示单元,该显示单元显示由输出视频信号表示的图像,并且由控制单元关于多个分割视频信号当中的一些分割视频信号而获取的信号信息的种类的数目大于由控制单元关于其他分割视频信号而获取的信号信息的种类的数目。(A video display apparatus as an exemplary aspect of the present invention includes: an input unit that receives an input of a plurality of divided video signals representing a plurality of divided images obtained by dividing an output image, and acquires signal information of each of the divided video signals; a video signal processing unit that applies processing to the plurality of divided video signals and generates an output video signal representing an image obtained by combining the divided images; a control unit that acquires signal information from the input unit and supplies a control signal relating to processing to the video signal processing unit; and a display unit that displays an image represented by the output video signal, and the number of kinds of signal information acquired by the control unit with respect to some of the plurality of divided video signals is larger than the number of kinds of signal information acquired by the control unit with respect to other divided video signals.)
1. A video display apparatus comprising:
an input unit that receives an input of a plurality of divided video signals representing a plurality of divided images obtained by dividing an output image, and acquires signal information of each of the divided video signals;
a video signal processing unit that applies processing to the plurality of divided video signals and generates an output video signal representing an image obtained by combining the divided images;
a control unit that acquires the signal information from the input unit and supplies a control signal relating to the processing to the video signal processing unit; and
a display unit that displays an image represented by the output video signal,
wherein the number of kinds of signal information acquired by the control unit with respect to some of the plurality of divided video signals is larger than the number of kinds of signal information acquired by the control unit with respect to other divided video signals.
2. The video display apparatus according to claim 1,
the number of kinds of signal information acquired by the control unit with respect to the other divided video signals is one.
3. The video display apparatus according to claim 1 or 2,
the signal information acquired by the control unit with respect to the other divided video signals is only signal information indicating the presence or absence of each of the divided video signals.
4. The video display device according to any one of claims 1 to 3,
the control unit causes the video signal processing unit to generate the output video signal such that a predetermined image is displayed on the display unit in an area corresponding to the divided video signal whose absence is indicated by the signal information.
5. The video display apparatus according to claim 4,
the predetermined image is a mute image of the video display apparatus.
6. The video display device according to any one of claims 1 to 5, wherein some of the split video signals are:
a divided video signal selected based on signal information representing the presence or absence of predetermined information included in payload information of the divided video signal among the signal information acquired by the input unit.
7. The video display device according to any one of claims 1 to 5,
the control unit selects some of the divided video signals according to a selection instruction of a user.
8. The video display device according to any one of claims 1 to 7,
the control unit acquires the signal information that has been acquired from the divided video signals by the input unit at a period longer than a predetermined period.
9. The video display device according to any one of claims 1 to 8,
the control unit supplies the control signal to control the video signal processing unit so that the output video signal including an image for on-screen display according to an input operation by a user is generated.
10. A video display method, comprising:
inputting a plurality of divided video signals representing a plurality of divided images obtained by dividing an output image to an input unit;
acquiring, by the input unit, signal information of each of the plurality of divided video signals;
acquiring, by a control unit, the signal information of each of the divided video signals from the input unit;
applying processing to the plurality of split video signals;
generating an output video signal representing an image obtained by combining the divided images; and
displaying an image represented by the output video signal,
wherein the number of kinds of signal information acquired by the control unit with respect to some of the plurality of divided video signals is larger than the number of kinds of signal information acquired by the control unit with respect to other divided video signals.
11. A video signal processing apparatus comprising:
an input unit that receives an input of a plurality of divided video signals representing a plurality of divided images obtained by dividing an output image, and acquires signal information of each of the divided video signals;
a video signal processing unit that applies processing to the plurality of divided video signals and generates an output video signal representing an image obtained by combining the divided images, and
a control unit that acquires the signal information from the input unit and supplies a control signal relating to the processing to the video signal processing unit,
wherein the number of kinds of signal information acquired by the control unit with respect to some of the plurality of divided video signals is larger than the number of kinds of signal information acquired by the control unit with respect to other divided video signals.
Technical Field
The invention relates to a video display apparatus, a video display method and a video signal processing apparatus.
Background
Disclosure of Invention
Problems to be solved by the invention
In the above-described structure in which parallel processing is performed on the divided images that have been obtained by dividing the high-resolution image, for example, a single Central Processing Unit (CPU) may perform monitoring as to whether or not a video signal representing the divided images is input, and information representing the format and the like of the video signal. Further, the video signal conveying the 4K2K image or the 2K1K image may include information indicating various items of a synchronization signal, an H frequency (horizontal frequency), a V frequency (vertical frequency), interlace information, RGB/chrominance information, and the like, for each vertical scanning period. In this case, when the V frequency of the video signal is, for example, 50Hz, pieces of information are transmitted every 20 ms. In this case, for example, the CPU iteratively performs processing of monitoring of a plurality of video signals on which parallel processing is to be performed in a 20ms cycle. For example, when on-screen display (hereinafter referred to as "OSD") according to an operation by a user using a remote controller or the like is performed under the control of the CPU, there is a problem that when the load on the CPU is high, the response of the OSD to the user operation becomes slow. Thus, there is a problem that the load on the CPU may be excessively high when monitoring a plurality of video signals input in parallel.
The present invention has been made in view of the above circumstances, and an exemplary object of the present invention is to provide a video display apparatus, a video display method, and a video signal processing apparatus capable of solving the above problems.
Means for solving the problems
In order to solve the above-mentioned problems, an exemplary aspect of the present invention is a video display apparatus including: an input unit that receives an input of a plurality of divided video signals representing a plurality of divided images obtained by dividing an output image, and acquires signal information of each of the divided video signals; a video signal processing unit that applies processing to the plurality of divided video signals and generates an output video signal representing an image obtained by combining the divided images; a control unit that acquires signal information from the input unit and supplies a control signal relating to processing to the video signal processing unit; and a display unit that displays an image represented by the output video signal, and the number of kinds of signal information acquired by the control unit with respect to some of the plurality of divided video signals is larger than the number of kinds of signal information acquired by the control unit with respect to other divided video signals.
Further, an exemplary aspect of the present invention is a video display method, which includes: inputting a plurality of divided video signals representing a plurality of divided images obtained by dividing an output image to an input unit; acquiring, by an input unit, signal information of each of the divided video signals; acquiring, by a control unit, signal information of each of the divided video signals from an input unit; applying processing to the plurality of divided video signals; generating an output video signal representing an image obtained by combining the divided images; and displaying an image represented by the output video signal, and the number of kinds of signal information acquired by the control unit with respect to some of the plurality of divided video signals is larger than the number of kinds of signal information acquired by the control unit with respect to other divided video signals.
Further, an exemplary aspect of the present invention is a video signal processing apparatus including: an input unit that receives an input of a plurality of divided video signals representing a plurality of divided images obtained by dividing an output image, and acquires signal information of each of the divided video signals; a video signal processing unit that applies processing to the plurality of divided video signals and generates an output video signal representing an image obtained by combining the divided images; and a control unit that acquires the signal information from the input unit and supplies a control signal related to the processing to the video signal processing unit, and the number of kinds of signal information acquired by the control unit with respect to some of the plurality of divided video signals is larger than the number of kinds of signal information acquired by the control unit with respect to other divided video signals.
Exemplary advantages of the invention
With the exemplary aspects of the present invention, the burden on the control unit that monitors a plurality of divided video signals can be reduced.
Drawings
Fig. 1 is a system diagram showing an example of the structure of a video display system according to an exemplary embodiment of the present invention.
Fig. 2 is a schematic diagram showing an example of an image to be processed by the
Fig. 3 is a flowchart illustrating an example of the operation of the video signal processing apparatus 200 illustrated in fig. 1.
Fig. 4 is a system diagram showing an example of the basic structure of an exemplary embodiment of the present invention.
Detailed Description
Hereinafter, example embodiments of the present invention will be described with reference to the accompanying drawings. Fig. 1 is a system diagram showing an example of the structure of a
The
The 3G-SDI signals (1) to (4) input to the input terminals 201 to 204 are input to the input circuits 211 to 214 of the input unit 210, respectively. Further, the 3G-SDI signals (1) to (4) input to the input terminals 201 to 204 are input in parallel to the video signal processing unit 240 as four divided video signals through the input circuits 211 to 214 or without through the input circuits 211 to 214. The divided video signals input to the video signal processing unit 240 are the same as the 3G-SDI signals (1) to (4) input to the input terminals 201 to 204.
The input unit 210 is provided with input circuits 211 to 214. The input circuit 211 is provided with a signal detection unit (1)221 and a payload acquisition unit (1) 231. The input circuit 212 is provided with a signal detection unit (2)222 and a payload acquisition unit (2) 232. The input circuit 213 is provided with a signal detection unit (3)223 and a payload acquisition unit (3) 233. The input circuit 214 is provided with a signal detection unit (4)224 and a payload acquisition unit (4) 234. The input unit 210 receives input of the 3G-SDI signals (1) to (4) that have been input to the input terminals 201 to 204. Then, the input unit 210 generates predetermined signal information using the signal detection units (1)221 to (4)224 and the payload acquisition units (1)231 to (4)234 based on the
It is to be noted that the signal information in the present exemplary embodiment is configured by a variety of signal information to be described below. The signal information is, for example, information used when the video signal processing unit 240 performs processing, and includes various kinds of signal information indicating the kind, format, and content of the 3G-SDI signals (1) to (4), one kind of signal information indicating the presence or absence of each of the signals, and the like. Further, for example, the CPU260 uses the signal information as information for determining whether the signal is supported by the
The signal detection units (1)221 to (4)224 detect, for example, the presence or absence of synchronization, the H/V frequency, and interlace information based on the 3G-SDI signals (1) to (4). The signal detection units (1)221 to (4)224 generate and output, for example, one kind of signal information indicating the presence or absence of synchronization, one kind of signal information indicating the H/V frequency, and one kind of signal information indicating interlace information. The payload acquisition units (1)231 to (4)234 acquire payload information (RGB/chroma information, Quad Link presence/absence information, etc.) which is information included in the 3G-SDI signals (1) to (4) and is information of a video source. The Quad Link presence/absence information is information indicating "presence" when one video is displayed using four 3G-SDI signals (1) to (4), and is set by the
Note that, in the SMPTE 352 standard, each data stream of the virtual interface transmits a payload ID (payload identification code) including the following information items. That is, the payload ID includes, for example, information indicating the format of the payload, information indicating whether the scanning method is interlaced or progressive, and information indicating the rate, aspect ratio, color space, bit depth, channel number of the multilink interface, and the like of the image. Here, for example, the information indicating the format of the payload indicates information indicating whether the SDI signal is a 3G-SDI signal or a 12G-SDI signal, information indicating whether a link is a single link, a double link, or a four link, the number of vertical lines, or the like. The payload acquisition units (1)231 to (4)234 may generate the above-described kind of signal information based on, for example, the content of the payload ID.
The video signal processing unit 240 receives inputs of the 3G-SDI signals (1) to (4) (split video signals) in parallel, applies predetermined processing thereto, combines the split images, and generates and outputs an output video signal to be displayed on the projection device 250. That is, the output video signal is a video signal obtained by combining the divided
The projection device 25 is, for example, a liquid crystal panel, transmits light emitted from a light source (not shown in the figure), and displays an image on an external screen or the like based on an output video signal.
The CPU260 processes the basic operation of the
Note that the CPU260 may select some of the 3G-SDI signals (1) to (4) as signal information to be acquired from the input unit 210 according to a selection instruction of the user. Further, if the predetermined signal information that has been acquired after the thinning-out does not satisfy the predetermined condition, the CPU260 may supply a predetermined control signal to the video signal processing unit 240 to control the video signal processing unit 240 so that the display based on the output video signal (the display is muted) is not performed. The case where the predetermined signal information does not satisfy the predetermined condition is, for example, a case where the 3G-SDI signal is not a signal supported by the
The operation receiving unit 270 is configured to accept an operation of the
In the
Next, an example of the operation of the video signal processing apparatus 200 shown in fig. 1 will be described with reference to fig. 3. Fig. 3 shows a flowchart of an example of the operation of the video signal processing apparatus 200 shown in fig. 1. The processing shown in fig. 3 is performed at a constant period, for example, every 20ms (═ 1/V frequency of the video signal (i.e., 50 Hz)).
When the process starts (step S30), the CPU260 sequentially acquires the Quad Link presence/absence information included in the payload information, that is, first the first piece of Quad Link presence/absence information, from the input unit 210 (step S31). If the CPU260 can acquire the Quad Link presence/absence information indicating "presence" at step S31, the CPU260 temporarily sets the terminal (3G-SDI signal) for which the Quad Link presence/absence information indicating "presence" can be acquired for the first time as the main terminal setting. For example, if the first piece of Quad Link presence/absence information acquired by the CPU260 indicates "present", the CPU260 sets the first terminal as the main terminal and does not acquire the second to fourth pieces of payload information from the input unit 210. Note that, if the Quad Link presence/absence information is appended to only one of the outputs of the 3G-SDI signals (1) to (4) output by the
Further, when the main terminal setting according to the user 'S setting has been performed, the CPU260 prioritizes the user' S setting based on the main setting value by the user 'S setting without considering the payload information acquired at step S31, and uses the user' S setting value acquired using the operation receiving unit 270 as the main terminal setting (steps S32 to S33). Note that, if the main terminal setting according to the setting of the user has been acquired, the process of step S31 may be omitted, and the CPU260 may not acquire the first to fourth Quad Link presence/absence information.
Next, the CPU260 assigns "1" to the variable i, which is a variable used in the processing (step S34), and if the variable i is less than or equal to "4" (in the case of yes at step S35), acquires a detection result regarding the presence or absence of the 3G-SDI signal (1) from the i-th input circuit (in this case, the first input circuit 211) (step S36).
At step S37, if the variable i is equal to the value set by the main terminal (in the case of yes at step S37), the CPU260 acquires the i-th H frequency from the i-th input circuit (any one of the input circuits 211 to 214) (step S38), acquires the i-th V frequency from the i-th input circuit (step S39), acquires the i-th interlace information from the i-th input circuit (step S40), and acquires the i-th RGB/chromaticity information from the i-th input circuit (step S41). The signal information acquired by the CPU260 from the input unit 210 at steps S38 to S41 is, for example, information for determining whether the signal is supported by the
Next, if the CPU260 has determined that the signal is not supported or the signal is not present based on the detection result at step S36 and the signal information acquired at steps S38 to S41 (in the case of no at step S42), the CPU260 mutes (does not display) the i-th video (any one of the divided
In contrast, if the i-th terminal is not the main terminal (in the case of no at step S37), the CPU260 acquires only the detection result regarding the presence or absence of the i-
Thereafter, the CPU260 increments the variable i by 1 (step S44), and iteratively performs the processing at steps S35 to S44 until the variable i is greater than or equal to "4" (until no at step S35). In contrast, if the variable i is greater than "4" (in the case of no at step S35), the CPU260 ends the process shown in fig. 3 (step S45).
In the process shown in fig. 3, if the 3G-SDI signal (any one of 3G-SDI signals (1) to (4)) set as the main terminal is not a signal supported by the
Further, in the above-described processing, the CPU260 does not acquire information (information to be acquired sparsely) for determining whether or not the signal is supported by the
It is to be noted that, from the viewpoint of instability of signal/payload and incorrect information, assuming that the degree of influence when four 3G-SDI signals are input from a single external converter to the
Note that it is to be noted that the structure shown in fig. 1 is an example, and for example, a part or all of the input unit 210 and the video signal processing unit 240 may be integrally configured. Also, the present exemplary embodiment is not limited to the four-link of the SDI signal, and the present exemplary embodiment may be applied to a dual-link. Further, the SDI signal may be a signal other than the 3G-SDI and the 12G-SDI. In addition, a liquid crystal display, an organic electroluminescence (organic EL) display, or the like may be used instead of the projection device 250. Further, in this case, a multi-display in which a plurality of display panels are combined may be used. Further, in this case, the output video signal output by the video signal processing unit 240 may be configured by a plurality of video signals for a display panel.
Next, another example of the operation of the video signal processing apparatus 200 shown in fig. 1 (hereinafter referred to as "second operation example") will be described. In the above-described operation example (hereinafter referred to as "first operation example") described with reference to the flowchart shown in fig. 3, the CPU260 reduces the number of information items to be acquired by not acquiring signal information on terminals other than the main terminal, while the second operation example increases the information acquisition interval of the CPU 260. For example, if some of the 3G-SDI signals (1) to (4) are unstable due to the performance of the
It is to be noted that the CPU260 may acquire the signal information of all the 3G-SDI signals (1) to (4) from the input unit 210 every 40ms, the CPU260 may acquire the signal information sequentially, for example, one piece of the signal information of one 3G-SDI signal every 40ms, and the CPU260 may acquire the signal information sequentially, for example, the signal information of two 3G-SDI signals every 40 ms. That is, the decrease in the number of signals to be acquired in the first operation example and the increase in the acquisition interval in the second operation example can be appropriately combined.
Next, an example of a basic structure according to an exemplary embodiment of the present invention will be described with reference to fig. 4. Fig. 4 is a system diagram showing an example of a basic structure according to an exemplary embodiment of the present invention. The
Here, there are five kinds of signal information acquired by the
With the above configuration, the load on the
It is to be noted that, in the above structure, the number of kinds of signal information acquired by the
Note that the correspondence relationship between the structure shown in fig. 4 and the structure shown in fig. 1 is as follows. That is, the
Although the exemplary embodiments of the present invention have been described above in detail with reference to the drawings, the specific structures thereof are not limited to those of the exemplary embodiments, and designs and the like which do not depart from the gist of the present invention are also included. It is to be noted that some or all of the programs executed by the computers provided in the video signal processing apparatus 200 and the
Reference numerals
1 video display system
2 projector
3 external converter
4-input operation unit
10 video display device
11, 200 video signal processing apparatus
12 display unit
13, 210 input unit
14, 240 video signal processing unit
15 control unit
201 to 204 input terminals
211 to 214 input circuit
250 projection equipment
260 CPU
270 operate the receiving unit
- 上一篇:一种医用注射器针头装配设备
- 下一篇:图像处理装置、图像处理方法、程序以及投影系统