PROJECTION-TYPE VIDEO DISPLAY DEVICE

• US 20160080708A1
• Filed: 04/26/2013
• Published: 03/17/2016
• Est. Priority Date: 04/26/2013
• Status: Abandoned Application

• Current Assignee: Maxell, Ltd.
• Original Assignee: Hitachi Maxell Limited (Hitachi, Ltd.)
• Inventors: Sunahara, Yusuke, Urata, Hiroyuki, Takatsuji, Masaaki, Nagano, Yuki, IWASAKI, Michio, Ishikawa, Tatsuya
• Application Number:
  US14/786,678
• Publication Number:
  US 20160080708A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04N 9/3147 Multi-projection systems displays in general H04N9/12; video walls G06F3/1446, G09G2300/026
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A projection-type video display device which is easily radio-connected to a portable terminal and can freely switchably display video images sent from a plurality of portable terminals is provided. The projection-type video display device is directly connected to a portable terminal (2) by a radio transmission scheme without a relay station. The projection-type video display device (1) has a proximity communication unit (10) which transmits/receives device information of the projection-type display device (1) to/from the portable terminal, and the portable terminal (2) is put over or touched on the proximity communication unit (10) to transmit/receive the device information. The projection-type video display device has a radio signal input unit 20 which selects a desired portable terminal from the plurality of portable terminals and connects the selected portable terminal.

Claims

1. A projection-type video display device which is connected to an external device to display a video image input from the external device, the external device including a portable terminal, comprising

a proximity communication unit which can be directly connected to the portable terminal by a radio transmission scheme without a relay station and

transmits/receives device information of the projection-type video display device to/from the external device, wherein

the external device is put over or touched on the proximity communication unit to transmit/receive the device information.

2. The projection-type video display device according to claim 1, wherein

the device information includes setting information for radio connection to the projection-type video display device.

3. The projection-type video display device according to claim 1, wherein

the device information includes operation setting information of the projection-type video display device.

4. The projection-type video display device according to claim 1, wherein

the device information includes operating information of the projection-type video display device.

5. A projection-type video display device which is connected to a plurality of external devices to display video images input from the external devices, the external devices including portable terminals, comprising:

a radio signal input unit which can be directly connected to the portable terminals by a radio transmission scheme without a relay station,

selects an external device for displaying a video image from the plurality of external devices, and connects the selected external device.

6. The projection-type video display device according to claim 5, wherein

the radio signal input unit sequentially connects the external devices and displays images sent from the external devices as a multi-screen on the same screen.