Display device

• US 9,961,295 B2
• Filed: 06/22/2012
• Issued: 05/01/2018
• Est. Priority Date: 06/22/2012
• Status: Active Grant

• Current Assignee: Sharp NEC Display Solutions, Ltd.
• Original Assignee: NEC Display Solutions, Ltd. (NEC Corporation)
• Inventors: Takada, Naoki
• Primary Examiner(s): Chowdhury, Nigar
• Application Number:
  US14/407,045
• Publication Number:
  US 20150172594A1
• Time in Patent Office: 2,139 Days
• Field of Search: 386230, 386248
• CPC Class Codes: G06F 3/1446 display composed of modules, e.g. video walls
• CPC Class Codes: G06Q 30/0272 Period of advertisement exposure
• CPC Class Codes: G09G 2300/026 Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
• CPC Class Codes: G09G 2340/045 Zooming at least part of an image, i.e. enlarging it or shrinking it
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D
• CPC Class Codes: H04N 21/4122 additional display device, e.g. video projector digital output for controlling a plurality of local displays G06F3/1423
• CPC Class Codes: H04N 21/41415 involving a public display, viewable by several users in a public space outside their home, e.g. movie theatre, information kiosk
• CPC Class Codes: H04N 21/4325 by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79
• CPC Class Codes: H04N 21/440263 by altering the spatial resolution, e.g. for displaying on a connected PDA
• CPC Class Codes: H04N 21/812 involving advertisement data advertising per se G06Q30/02
• CPC Class Codes: H04N 5/64 Constructional details of receivers, e.g. cabinets or dust covers furniture aspects of television cabinets A47B81/06
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/775 between a recording apparatus and a television receiver
• CPC Class Codes: H04N 9/30 using solid-state colour display devices
• CPC Class Codes: H04N 9/87 Regeneration of colour television signals H04N9/80 takes precedence

Abstract

A display device includes: a display panel that displays an input video signal; and a video recording and reproduction unit that records and reproduces a video picture to be displayed on the display panel. The video recording and reproduction unit includes an image-size setting unit that reduces a size of a screen of the input video signal according to a multi-display configuration.

Claims

1. A display device that constitutes multi-display along with at least one separate display unit, the display device comprising:

a video processing unit that supplies an output video signal generated by processing an input video signal;

a display panel that receives the output video signal and displays a video picture using the output video signal; and

a video recording and reproduction unit that receives a signal that is a same as the output video signal received by the display panel and includes the video picture displayed by the display panel, the video recording and reproduction unit recording a video signal for a size-reduced screen generated by reducing a size of the received signal that is the same as the output video signal according to a multi-display configuration, and the video recording and reproduction unit outputting the video signal for the size-reduced screen to a video synthesizing device that synthesizes, based on position information, the video signal for the size-reduced screen with a video signal for a size-reduced screen generated by the at least one separate display device, the position information relating to arrangement positions of the display device and the at least one separate display device in the multi-display.

2. The display device according to claim 1, wherein, in a case of multi-display in a two-dimensional array of M in a horizontal direction by N in a vertical direction (M and N are integers), the video recording and reproduction unit generates a size-reduced screen of 1/M in the horizontal direction and 1/N in the vertical direction.

3. The display device according to claim 1, wherein the video recording and reproduction unit further records the position information relating to the arrangement position of the display device in the multi-display.

4. The display device according to claim 1, wherein the video recording and reproduction unit further records a signal for synchronization.

5. The display device according to claim 1, wherein the video signal for the size-reduced screen shows an entirety of the video picture.

6. The display device according to claim 1, wherein the video recording and reproduction unit reduces a size of the size-reduced screen according to a number of displays to be used for the multi-display configuration.

7. The display device according to claim 1, wherein the video recording and reproduction unit records the position information relating to the arrangement position of the display device in the multi-display and a time code for synchronizing respective displays.

8. The display device according to claim 7, further comprising:

a backlight that irradiates light to the display panel,

wherein the video recording and reproduction unit records an operating state of the backlight simultaneously with recording the position information relating to the arrangement position of the display device in the multi-display and the time code.

9. The display device according to claim 1, further comprising:

a backlight that irradiates light to the display panel,

wherein the video recording and reproduction unit records an operating state of the backlight simultaneously.

16. The display device according to claim 1, wherein the video recording and reproduction unit randomly selects the video signal for the size-reduced screen, and records the randomly selected video signal.

17. The display device according to claim 1, wherein a video picture of the recorded video signal includes one of video pictures generated by dividing a video picture of the input video signal according to the multi-display configuration.

19. The display device according to claim 1, wherein, when a plurality of display devices form one screen, the video recording and reproduction unit reduces a size of the size-reduced screen according to a number of displays to be used for the multi-display configuration and records the size-reduced screen.

20. The display device according to claim 1, wherein the video synthesizing device transmits a time code to the video recording and reproduction unit for synthesizing the video signal for the size-reduced screen with the video signal for the size-reduced screen generated by the at least one separate display device.

21. The display device according to claim 1, wherein the output video signal comprises a video signal processed based on the position information relating to the arrangement position of the display device in the multi-display so as to form one screen by the multi-display.

22. The display device according to claim 1, wherein the signal received by the video recording and reproduction unit is supplied from the video processing unit.

10. A display method for a display device constituting multi-display along with at least one separate display unit, the display method comprising:

supplying an output video signal generated by processing an input video signal;

receiving, by a display panel of the display device, the output video signal;

displaying, by the display panel, a video picture using the output video signal;

receiving, by a video recording and reproduction unit of the display device, a signal that is a same as the output video signal received by the display panel and includes the video picture displayed by the display panel;

recording, by the video recording and reproduction unit, a video signal for a size-reduced screen generated by reducing a size of the received signal that is the same as the output video signal according to a multi-display configuration; and

outputting the video signal for the size-reduced screen to a video synthesizing device that synthesizes, based on position information, the video signal for the size-reduced screen with another video signal for a size-reduced screen generated by the at least one separate display device, the position information relating to arrangement positions of the display device and the at least one separate display device in the multi-display.

11. The display method according to claim 10, wherein the video signal for the size-reduced screen shows an entirety of the video picture.

12. The display method according to claim 10, wherein the reducing a size of the received video signal includes reducing a size of the size-reduced screen according to a number of displays to be used for the multi-display configuration.

13. The display method according to claim 10, further comprising:

recording the position information relating to the arrangement position of the display device in the multi-display and a time code for synchronizing respective displays.

14. The display method according to claim 13, further comprising:

irradiating, by a backlight, light to the display panel,

wherein the video recording and reproduction unit records an operating state of the backlight simultaneously with recording the position information relating to the arrangement position of the display device and the time code.

15. The display method according to claim 10, further comprising:

irradiating, by a backlight, light to the display panel; and

recording an operating state of the backlight.

18. The display method according to claim 13, further comprising:

synthesizing, based on the position information relating to the arrangement position and the time code, video signals reproduced by the display devices to generate a synthesized signal; and

displaying a video picture using the synthesized signal.