VIDEO DISPLAY TERMINAL, VIDEO TRANSMISSION TERMINAL, VIDEO COMMUNICATION SYSTEM, VIDEO DISPLAY METHOD, VIDEO TRANSMISSION METHOD, AND COMPUTER-READABLE RECORDING MEDIUM RECORDING PROGRAM

• US 20150135240A1
• Filed: 09/26/2014
• Published: 05/14/2015
• Est. Priority Date: 11/13/2013
• Status: Abandoned Application

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: Shibuya, Kazuyuki
• Application Number:
  US14/498,634
• Publication Number:
  US 20150135240A1
• Time in Patent Office: Days
• US Class Current: 725/81
• CPC Class Codes: H04N 21/2223 being a public access point, e.g. for downloading to or uploading from clients arrangements specially adapted to plural spots in a confined site in broadcast systems H04H20/63
• CPC Class Codes: H04N 21/2347 involving video stream encryption
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114

Abstract

A video display terminal includes a wireless communication interface, a display interface, an operation interface, and a control unit. The control unit causes the wireless communication interface to wirelessly transmit a video transmission request to a video transmission terminal joining a wireless network constructed by the own video display terminal if the operation interface receives a video display instruction when the own video display terminal operates as an access point constructing the wireless network, causes the display interface to display a video for the own video display terminal wirelessly transmitted from the video transmission terminal in response to the video transmission request and wirelessly received by the wireless communication interface, and causes the wireless communication interface to wirelessly transmit the video for the own video display terminal to another video display terminal joining the wireless network constructed by the own video display terminal.

Claims

1. A video display terminal comprising:

a wireless communication interface configured to wirelessly communicate with another terminal;

a display interface configured to display a video;

an operation interface configured to receive an operation of a user; and

a control unit configured to cause the wireless communication interface to wirelessly transmit a video transmission request to a video transmission terminal joining a wireless network constructed by the own video display terminal if the operation interface receives a video display instruction when the own video display terminal operates as an access point (AP) constructing the wireless network, cause the display interface to display a video for the own video display terminal wirelessly transmitted from the video transmission terminal in response to the video transmission request and wirelessly received by the wireless communication interface, and cause the wireless communication interface to wirelessly transmit the video for the own video display terminal to another video display terminal joining the wireless network constructed by the own video display terminal.

2. The video display terminal according to claim 1, wherein, when the wireless communication interface has received transmission destination information representing a transmission destination of the video for the own video display terminal, along with the video for the own video display terminal, from the video transmission terminal, the control unit causes the wireless communication interface to wirelessly transmit the video for the own video display terminal to a video display terminal represented by the transmission destination information.

3. The video display terminal according to claim 1, wherein, when the wireless communication interface has wirelessly received terminal information representing whether a wireless terminal is a video display terminal from the wireless terminal which has not joined the wireless network constructed by the own video display terminal and is other than the video transmission terminal, the control unit causes the wireless communication interface to wirelessly transmit the video for the own video display terminal to only the wireless terminal wirelessly transmitting terminal information representing that the wireless terminal is the video display terminal after the wireless terminal has joined the wireless network constructed by the own video display terminal.

4. The video display terminal according to claim 1, wherein, when the wireless communication interface has wirelessly received limitation information representing that a display of a video is limited, along with the video for the own video display terminal, from the video transmission terminal, the control unit causes the wireless communication interface to wirelessly transmit the video for the own video display terminal obtained by performing image processing for degrading visibility of a video to the other video display terminal.

5. The video display terminal according to claim 2, wherein, when the wireless communication interface has wirelessly received encryption information in accordance with the transmission destination represented by the transmission destination information, along with the encrypted video for the own video display terminal, from the video transmission terminal, the control unit decrypts the encrypted video for the own video display terminal, encrypts the decrypted video for the own video display terminal based on the encryption information, and causes the wireless communication interface to wirelessly transmit the video for the own video display terminal encrypted based on the encryption information to the other video display terminal.

6. A video transmission terminal comprising:

a wireless communication interface configured to wirelessly communicate with another terminal; and

a control unit configured to cause the wireless communication interface to wirelessly transmit a video to a first video display terminal when the wireless communication interface has wirelessly received a video transmission request from the first video display terminal which operates as an AP constructing a wireless network that the own video transmission terminal has joined and cause the wireless communication interface to wirelessly transmit transmission destination information representing that a transmission destination of the video for the first video display terminal is a second video display terminal to the first video display terminal along with the video for the first video display terminal if a video session with the second video display terminal other than the first video display terminal is established when a video session with the first video display terminal is established.

7. The video transmission terminal according to claim 6, wherein, when the wireless communication interface has wirelessly received a video transmission request from the second video display terminal with which the video session has been established, the control unit causes the wireless communication interface to wirelessly transmit the transmission destination information to the first video display terminal along with the video for the first video display terminal.

8. The video transmission terminal according to claim 6, wherein the control unit causes the wireless communication interface to wirelessly transmit limitation information representing that a display of a video is limited to the first video display terminal along with the video for the first video display terminal.

9. The video transmission terminal according to claim 6, wherein the control unit causes the wireless communication interface to wirelessly transmit encryption information in accordance with the transmission destination represented by the transmission destination information to the first video display terminal along with the video for the first video display terminal.

10. The video transmission terminal according to claim 6,

wherein the control unit permits establishment of a video session with the second video display terminal when a number of established video sessions is counted and the number of established video sessions is less than a predetermined number,

wherein the control unit rejects the establishment of the video session with the second video display terminal when the number of established video sessions is greater than or equal to the predetermined number, and

wherein the control unit permits the establishment of the video session with the second video display terminal regardless of the number of established video sessions when a video session with the first video display terminal has been established.

11. A video communication system comprising:

a first video display terminal; and

a video transmission terminal joining a wireless network constructed by the first video display terminal,

wherein the first video display terminal includes;

a first wireless communication interface configured to wirelessly communicate with another terminal;

a display interface configured to display a video;

an operation interface configured to receive an operation of a user; and

a first control unit configured to cause the first wireless communication interface to wirelessly transmit a video transmission request to the video transmission terminal if the operation interface receives a video display instruction when the first video display terminal operates as an AP constructing the wireless network, cause the display interface to display a video for the first video display terminal wirelessly transmitted from the video transmission terminal in response to the video transmission request and wirelessly received by the first wireless communication interface, and cause the first wireless communication interface to wirelessly transmit the video for the first video display terminal to a second video display terminal which joins the wireless network constructed by the first video display terminal and is other than the first video display terminal, and

wherein the video transmission terminal includes;

a second wireless communication interface configured to wirelessly communicate with another terminal; and

a second control unit configured to cause the second wireless communication interface to wirelessly transmit a video to the first video display terminal when the second wireless communication interface has wirelessly received the video transmission request from the first video display terminal and cause the second wireless communication interface to wirelessly transmit transmission destination information representing that a transmission destination of the video for the first video display terminal is a second video display terminal to the first video display terminal along with the video for the first video display terminal if a video session with the second video display terminal is established when a video session with the first video display terminal is established.

12. A video display method comprising the steps of:

wirelessly transmitting, by a wireless communication interface provided in a first video display terminal, a video transmission request to a video transmission terminal joining a wireless network constructed by the first video display terminal if an operation interface provided in the first video display terminal receives a video display instruction when the first video display terminal operates as an AP constructing the wireless network; and

displaying, by a display interface, a video for the first video display terminal wirelessly transmitted from the video transmission terminal in response to the video transmission request and wirelessly received by the wireless communication interface, and wirelessly transmitting, by the wireless communication interface, the video for the first video display terminal to a second video display terminal which joins the wireless network constructed by the first video display terminal and is other than the first video display terminal.

13. A video transmission method comprising the steps of:

wirelessly transmitting, by a wireless communication interface provided in a video transmission terminal, a video to a first video display terminal when the wireless communication interface has wirelessly received a video transmission request from the first video display terminal which operates as an AP constructing a wireless network that the video transmission terminal has joined; and

wirelessly transmitting, by the wireless communication interface, transmission destination information representing that a transmission destination of the video for the first video display terminal is a second video display terminal to the first video display terminal along with the video for the first video display terminal if a video session with a second video display terminal other than the first video display terminal is established when a video session with the first video display terminal is established.

14. A computer-readable recording medium recording a program for causing a computer to execute the steps of:

causing a wireless communication interface provided in a first video display terminal to wirelessly transmit a video transmission request to a video transmission terminal joining a wireless network constructed by the first video display terminal if an operation interface provided in the first video display terminal receives a video display instruction when the first video display terminal operates as an AP constructing the wireless network; and

causing a display interface to display a video for the first video display terminal wirelessly transmitted from the video transmission terminal in response to the video transmission request and wirelessly received by the wireless communication interface and causing the wireless communication interface to wirelessly transmit the video for the first video display terminal to a second video display terminal which joins the wireless network constructed by the first video display terminal and is other than the first video display terminal.

15. A computer-readable recording medium recording a program for causing a computer to execute the steps of:

causing a wireless communication interface provided in a video transmission terminal to wirelessly transmit a video to a first video display terminal when the wireless communication interface has wirelessly received a video transmission request from the first video display terminal which operates as an AP constructing a wireless network that the video transmission terminal has joined; and

causing the wireless communication interface to wirelessly transmit transmission destination information representing that a transmission destination of the video for the first video display terminal is a second video display terminal to the first video display terminal along with the video for the first video display terminal if a video session with a second video display terminal other than the first video display terminal is established when a video session with the first video display terminal is established.