| US 7,477,321 B2 | ||
| Video display system and video display control apparatus | ||
| Tatsuya Yokoyama, Tokyo (Japan); Yuka Ohashi, Tokyo (Japan); Jin Sato, Tokyo (Japan); Ayumi Mizobuchi, Tokyo (Japan); Yushi Sayama, Tokyo (Japan); Mami Uchida, Saitama (Japan); Tatsushi Nashida, Kanagawa (Japan); Goro Takaki, Kanagawa (Japan); and Kirihito Ogawa, Kanagawa (Japan) | ||
| Assigned to Sony Corporation, Tokyo (Japan) | ||
| Appl. No. 10/514,008 PCT Filed May 12, 2003, PCT No. PCT/JP03/05908 § 371(c)(1), (2), (4) Date Nov. 09, 2004, PCT Pub. No. WO03/096678, PCT Pub. Date Nov. 20, 2003. |
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| Claims priority of application No. 2002-137774 (JP), filed on May 13, 2002. | ||
| Prior Publication US 2005/0174489 A1, Aug. 11, 2005 | ||
| Int. Cl. H04N 7/00 (2006.01); H04N 5/44 (2006.01); H04N 9/74 (2006.01); H04N 5/66 (2006.01) | ||
| U.S. Cl. 348—553 [348/552; 348/739; 348/578; 348/734] | 62 Claims |
| 1. A video display system comprising a minimum of two display units and a base station that supplies a video signal to the
display units, in which:
the base station includes:
a minimum of two tuning means each capable of selecting a reception channel independently of each other;
a video signal output means for supplying a video signal on the reception channel selected by each of the minimum of two tuning
means to the minimum of two display units;
a two-way communication means for transferring information signals to and from at least one of the minimum of two display
units; and
a control means for controlling the minimum of two tuning means, and
at least one of the minimum of two display units which transfers information signals to and from the base station includes:
a two-way communication means for transferring the information signals to and from the base station;
a video display for displaying an image corresponding to the video signal supplied from the base station;
a screen-touch positioning means provided on a display screen of the video display for recognition of the location of a touch
the user gives with the finger on the surface of the display screen; and
an operation instruction generating means for generating a display-image select instruction corresponding to the direction
of a user's touch by identifying the direction of the user's touch on the display screen solely on the basis of a detection
output of screen-touch location from the screen-touch positioning means,
receiving the display-image select instruction generated by the operation instruction generating means via the two-way communication
means, the controlling means in the base station controlling the channel selecting operation of the minimum of two tuning
means according to the display-image select instruction.
|