JP5581160B2 - Video signal processing system, display device used in video signal processing system, and video signal processing method - Google Patents

Description

  The present invention relates to a video signal processing system, a display device used in the video signal processing system, and a video signal processing method.

  Using a pair of glasses with shutters that open and close in synchronization with the video displayed on the screen of the television receiver, multiple television programs can be displayed on a single screen in a time-sharing manner. A system for viewing different programs for each user has been developed (see, for example, Patent Document 1).

  The invention described in Patent Document 1 relates to a “multi-view video display apparatus for a large number of people”. Specifically, “an image including a plurality of off-screen buffers and a single frame buffer and having upper and lower images in one frame”. Are sequentially copied from a plurality of off-screen buffers to one frame buffer. In the frame buffer, the back buffer is swapped with the front buffer in synchronization with the vertical synchronization signal, and sequentially displayed on the monitor device. Different images can be observed as three-dimensional or non-stereoscopic images by opening and closing the left and right separately or simultaneously in synchronism with the synchronization signal with the respective liquid crystal shutter glasses worn by a plurality of observers.

JP 2002-10300 A

  However, since the invention described in Patent Document 1 displays a fixed frame rate assigned to each program, it is displayed at 60 frames per second in the case of a television program, and flickering of video or crosstalk (video appears to be multiplexed). Phenomenon) may occur.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a video signal processing system, a display device used in the video signal processing system, and a video signal processing method that prevent video flicker and crosstalk.

  In order to solve the above problems, the invention according to claim 1 is a display device that displays a plurality of different programs within a certain time in a time division on one screen, and the specific program displayed on the display device. In the video signal processing system, comprising: glasses with shutters whose shutters open and close in synchronization with a fixed period of time, the display device according to the characteristics of the video source of the program of the display device, Control means for controlling to increase or decrease the frame rate at which the program can be displayed is provided.

  According to a second aspect of the present invention, in the first aspect of the present invention, the control means increases the frame rate of a program that includes a fast-moving video to a frame rate of a program that does not include a fast-moving video. It has the determination means which determines distribution of a rate, It is characterized by the above-mentioned.

  According to a third aspect of the present invention, in the first aspect of the invention, the control unit includes: a generation unit that generates a complementary video according to the determined frame rate; and a calculation unit that calculates a synchronization timing of video display. It is characterized by having.

  According to a fourth aspect of the invention, in the first aspect of the invention, the control means increases or decreases a frame rate depending on whether the video source is a 3D video or a 2D video.

  According to a fifth aspect of the present invention, there is provided a display device that displays a plurality of different programs in a fixed time on a single screen, and a shutter that opens and closes in synchronization with the cycle of the specific program on the display device. In a display device used in a video signal processing system including shutter glasses, the display device increases or decreases a frame rate at which the program can be displayed according to characteristics of a video source of the program on the display device. It has the control means to control to.

  According to a sixth aspect of the present invention, a plurality of different programs are displayed on a single screen within a predetermined time in a time-sharing manner, and glasses with shutters are synchronized with a period of the predetermined time of a specific program on the display device. In the video signal processing method for opening and closing the shutter, the frame rate at which the program can be displayed is controlled to be increased or decreased according to the characteristics of the video source of the program on the display device.

  ADVANTAGE OF THE INVENTION According to this invention, provision of the video signal processing system which prevented the flicker and crosstalk of the image | video, the display apparatus used for a video signal processing system, and a video signal processing method is realizable.

1 is a conceptual diagram of a video signal processing system according to the present invention. It is an example of the block diagram of 3D glasses shown in FIG. It is an example of the block diagram of the television shown in FIG. It is an example of the flowchart for demonstrating operation | movement of the video signal processing system shown in FIG.

Embodiments of the present invention will be described with reference to the drawings.
<Configuration>
FIG. 1 is a conceptual diagram of a video signal processing system according to the present invention.
A video signal processing system 10 shown in FIG. 1 includes a digital television receiver (hereinafter referred to as TV) 12 and glasses with shutters (hereinafter referred to as 3D glasses) 13.
The television 12 includes a signal transmission unit 12a and a television main body 12b, and the 3D glasses 13 include speakers 15a and 15b and shutters 17a and 17b.
In FIG. 1, 11 is an antenna for receiving digital television broadcast waves (hereinafter referred to as broadcast waves) such as terrestrial digital broadcast, BS (Broadcasting Satellites) broadcast, CS (Communication Satellites) broadcast, etc. For simplicity, one antenna is shown, but in reality one Yagi antenna and two parabolic antennas are required).

When the television 12 receives a broadcast wave, when viewing a three-dimensional (hereinafter referred to as 3D, D is an acronym for dimension) digital broadcast program, the signal transmission unit 12a transmits a signal wave for viewing the 3D program. When a plurality of users watch two or more different programs at the same time, a signal wave for 2D multiple program viewing is transmitted from the signal transmission unit 12a.
The viewer 17 can view the 3D program by wearing the 3D glasses 13.

FIG. 2 is an example of a block diagram of the 3D glasses shown in FIG.
The 3D glasses 13 include a signal reception processing unit 14, and the signal reception processing unit 14 receives a signal wave from the signal transmission unit 12a (see FIG. 1) and a signal wave received by the reception unit 14a. And a signal processing unit 14b for processing. The signal reception processing unit 14 is connected to the right speaker 15a, the left speaker 15b, the right shutter 17a, and the left shutter 17b.
When displaying a 3D program based on the signal from the signal transmission unit 12a, the signal processing unit 14b opens the right shutter 17a and simultaneously closes the left shutter 17b when the right-eye frame is displayed on the television main body 12b. When the left-eye frame is displayed on the television main body 12b, the shutters 17a and 17b are controlled so that the left shutter 17b is opened and the right shutter 17a is closed at the same time. When displaying a 2D program, the left and right shutters 17a and 17b are controlled to open simultaneously.

  The right speaker 15a and the left speaker 15b, regardless of whether they are a 3D program or a 2D program, sound both the left and right sounds when the sound is stereo broadcast, and the same sound when the monaural broadcast is used. To do.

FIG. 3 is an example of a block diagram of the television shown in FIG.
The television main body 12a includes, for example, a terrestrial digital broadcast tuner 21a, a BS broadcast tuner 21b, a CS broadcast tuner 21c, a reception processing unit 22, an audio output control unit 23, a video output control unit 24, and a display unit 25. Have.

  The reception processing unit 22 receives a signal including a video signal and an audio signal of a program selected by the user from the tuners 21a, 21b, and 21c, separates the signal into a video signal and an audio signal, and an audio output control unit 23 This is a circuit for outputting to the video output control unit 24.

  The audio output control unit 23 is a circuit that controls to output audio corresponding to stereo broadcast, monaural broadcast, or audio multiplex broadcast.

The video output control unit 24 is a circuit having a function of controlling to increase or decrease the frame rate at which a program can be displayed according to the characteristics of the video source of the program. Further, the video output control unit 24 determines a frame rate distribution by determining a frame rate distribution by increasing the frame rate of a program including a fast-moving video to a frame rate of a program not including a fast-moving video. A generating unit configured to generate a complementary video according to the rate; and a calculating unit configured to calculate a synchronization timing of video display. Further, the video output control unit 24 is a circuit having a function of increasing or decreasing the frame rate depending on whether the video source is a 3D image or a 2D image.
The video output control unit 24 has a function of displaying a plurality of television programs on a single screen in a time-sharing manner.
The determination unit, the generation unit, and the calculation unit are configured by control software stored in a ROM (Read Only Memory) (not shown) included in the reception processing unit 22.

  The display unit 25 is a device having a function of displaying a 2D image or a 3D image, and examples thereof include a liquid crystal display or a plasma display.

<Operation>
FIG. 4 is an example of a flowchart for explaining the operation of the video signal processing system shown in FIG.
The subject of control is the reception processing unit 22 (see FIG. 3).
When receiving the broadcast wave (step S1), the reception processing unit 22 decodes the program video (step S2) and determines whether there is a program that is being viewed simultaneously (step S3).
The reception processing unit 22 determines whether there is a program that is being simultaneously viewed, that is, whether there is a program that is currently being displayed on the display unit 25 (see FIG. 3) (step S3). When it is determined that there is a program (step S3 / Yes), the frame rate distribution for each program is determined (step S4), and a complementary video corresponding to the frame rate is created (step S5).

Here, when 3D video (frame rate: 180 frames per second) and 2D video (frame rate: 60 frames per second) are displayed simultaneously, a television capable of displaying at a frame rate of at least 240 frames per second is required. Therefore, a high-performance (expensive) television display member must be used.
On the other hand, in the present embodiment, it is not necessary to use a television display member that can display at a speed of 240 frames per second by determining the frame rate distribution for each program and generating a complementary image according to the frame rate. In addition, it is possible to prevent image flickering and crosstalk.

If the reception processing unit 22 determines that there is no program being watched simultaneously (step S3 / No), the reception processing unit 22 proceeds to step S5.
When the reception processing unit 22 creates a complementary video corresponding to the frame rate (step S5), it extracts video display synchronization timing (step S6), and transmits a video display synchronization timing signal to the 3D glasses 13 (step S6). S7), a plurality of screens are displayed on the television 12 (step S8).

  Through the above operation, a plurality of different programs are simultaneously played back (displayed) on one television 12, and a plurality of viewers wearing the 3D glasses 13 each view a plurality of different programs without flickering of the video or crosstalk. be able to.

<Program>
The video display apparatus according to the present invention described above is realized by a program that causes a computer to execute processing. Examples of the computer include general-purpose computers such as a microprocessor, but the present invention is not limited to this. Therefore, as an example, a case where the present invention is realized by a program will be described below.

For example,
A display device that displays a plurality of different programs within a certain time in a time-sharing manner on one screen, and glasses with shutters that open and close in synchronization with the period of the certain time of a specific program displayed on the display device And a computer of a display device of a video signal processing system comprising:
In order for the display device to execute a procedure for increasing or decreasing the frame rate at which the program can be displayed according to the characteristics of the video source of the program on the display device,
A step in which the determining means determines the distribution of the frame rate by increasing the frame rate of the program including the fast-moving video to the frame rate of the program not including the fast-moving video;
A procedure for generating a complementary video corresponding to the determined frame rate by the generation means;
A procedure in which the calculating means calculates the synchronization timing of the video display;
A program that executes

Thus, the apparatus according to the present invention can be realized anywhere as long as there is a computer environment capable of executing the program.
Such a program may be stored in a computer-readable storage medium.

<Storage medium>
Here, examples of the storage medium include a computer-readable storage medium such as a CD-ROM (Compact Disc Read Only Memory), a flexible disk (FD), and a CD-R (CD Recordable), a flash memory, and a RAM (Random). Examples include semiconductor memories such as Access Memory (ROM), Read Only Memory (ROM), and FeRAM (ferroelectric memory), and HDD (Hard Disc Drive).

  The above-described embodiment shows an example of a preferred embodiment of the present invention, and the present invention is not limited thereto, and various modifications can be made without departing from the scope of the invention. is there.

10 Video Signal Processing System 11 Antenna 12 Television (Television Receiver)
12a Signal transmitter 12b TV body 13 Glasses with shutter (3D glasses)
14 signal reception processing unit 14a reception unit 14b signal processing unit 15a right speaker 15b left speaker 16 viewer 17a right shutter 17b left shutter 21a, 21b, 21c tuner 22 reception processing unit 23 audio output control unit 24 video output control unit 25 display unit

Claims (6)

A display device for displaying a plurality of different programs within a certain time in a time-sharing manner on one screen;
Glasses with shutters that open and close in synchronization with the period of the predetermined time of a specific program displayed on the display device;
In the video signal processing system characterized by comprising:
The display device
A video signal processing system comprising control means for controlling to increase or decrease a frame rate at which the program can be displayed according to characteristics of a video source of the program on the display device.   The control means includes determining means for determining a frame rate distribution by increasing a frame rate of a program including a fast-moving video to a frame rate of a program not including a fast-moving video. Item 8. The video signal processing system according to Item 1.   The video processing system according to claim 1, wherein the control unit includes a generation unit that generates a complementary video corresponding to the determined frame rate, and a calculation unit that calculates a synchronization timing of video display.   2. The video signal processing system according to claim 1, wherein the control means increases or decreases a frame rate depending on whether the video source is a three-dimensional image or a two-dimensional image. A display device that displays a plurality of different programs within a certain time in a time-sharing manner on one screen; and glasses with a shutter that opens and closes in synchronization with the period of the certain time of the specific program on the display device. In a display device used in a video signal processing system,
The display device includes control means for controlling to increase or decrease a frame rate at which the program can be displayed according to characteristics of a video source of the program of the display device. Multiple different programs are displayed on the display device within a certain period of time on a single screen,
In the video signal processing method of opening and closing the shutter of the glasses with the shutter in synchronization with the period of the predetermined time of the specific program of the display device,
A video signal processing method comprising: controlling to increase or decrease a frame rate at which the program can be displayed according to characteristics of a video source of a program on the display device.

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