Display apparatus and display method

Patent metadata

Field	Value
Publication number	US-12302103-B2
Application number	US-202418795286-A
Country	US
Kind code	B2
Filing date	Aug 6, 2024
Priority date	Jan 23, 2015
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

An image display system includes a first terminal device and with a second terminal device whose usable function range is smaller than a usable function range of the first terminal device. The image display system includes a display projection unit, a communication unit that establishes wireless connection with the first and second terminal devices, a control unit that manages the wireless connection, and a connection control image generating unit. The control unit and the connection control image generating unit generate a terminal connection image including information for connecting the second terminal device with the image display system, based on terminal connection permission information that assigns the second terminal device whose wireless connection with the display system is permitted, the terminal connection permission information being transmitted from the first terminal device. The display projection unit displays the terminal connection image.

First claim

The invention claimed is:

1. A projection apparatus capable of performing wireless connection with a first terminal device and with a second terminal device, the projection apparatus comprising:
a projector configured to project an image;
a communication unit configured to communicate with the first terminal device and with the second terminal device by wireless communication; and
a management controller configured to manage the wireless communication with the first terminal device and with the second terminal device;
wherein the management controller generates a terminal connection image including permission information for connecting the second terminal device to the projection apparatus, based on terminal connection permission information for connection of the second terminal device, after receiving control information from the first terminal device, allowing the second terminal device to connect with the projection apparatus,
wherein the projector projects the terminal connection image generated by the management controller,
wherein the communication unit receives second information for connecting the second terminal device with the projection apparatus, the second information is generated by capturing the terminal connection image by the second terminal device and transmitted from the second terminal device, and
wherein the management controller allows the second terminal device to connect the projection apparatus based on the second information received from the second terminal device.

2. The projection apparatus according to claim 1 further comprising:
a timer configured to output information of current date and time,
wherein, when generating the terminal connection image, the management controller acquires the information of current date and time from the timer, and adds the acquired information of current date and time to the terminal connection image.

3. The projection apparatus according to claim 1 ,
wherein the management controller permits wireless connection of the first terminal device if previously-registered identification information that identifies the first terminal device matches externally-input identification information for the first terminal device.

4. The projection apparatus according to claim 1 ,
wherein the terminal connection image generated by the management controller is a QR code.

5. The projection apparatus according to claim 4 further comprising
an information storage configured to store operation permission information indicating a permitted status of the second terminal device,
wherein the management controller compares the operation permission information stored in the information storage and the status of the second terminal device transmitted from the second terminal device, and generates an image indicating that the second terminal device is performing an operation as not matching the operation permission information if the status includes a status not matching the operation permission information, and
the projector projects the image indicating that the second terminal device is performing an operation as not matching the operation permission information.

6. The projection apparatus according to claim 5 ,
wherein the operation permission information stored in the information storage is transmitted from the first terminal device.

7. A image projection method, performed by a projection apparatus including a projector that projects the image, a communication unit that communicates by wireless communication with a first terminal device and with a second terminal device, and a management controller that manages the wireless communication with the first terminal device and with the second terminal device, the projection apparatus being capable of performing wireless connection with the first terminal device and with the second terminal device, the projection method comprising steps of:
receiving, by the communication unit, terminal connection permission information from the first terminal device that is previously wireless-connected to the projection apparatus, the terminal connection permission information for connecting the second terminal device;
generating, by the management controller, a terminal connection image including permission information for connecting the second terminal device with the projection apparatus, based on the terminal connection permission information;
projecting, by the projector, the terminal connection image generated by the management controller,
receiving, by the communication unit, second information for connecting the second terminal device with the projection apparatus, wherein the second information generated by capturing the terminal connection image by the second terminal device and transmitted from the second terminal device; and
allowing, by the management controller, the second terminal device to connect the projection apparatus based on the second information received from the second terminal device.

8. The image projection method according to claim 7 further comprising a step of
acquiring, by the management controller, information of current date and time and adding the acquired information of current date and time to the terminal connection image when the terminal connection image is generated.

9. The image projection method according to claim 7 further comprising a step of
permitting, by the management controller, wireless connection of the first terminal device if previously-registered identification information that identifies the first terminal device matches externally-input identification information for the first terminal device.

10. The image projection method according to claim 7 further comprising steps of:
receiving, by the communication unit, a current status of the second terminal device transmitted from the second terminal device;
comparing, by the management controller, previously-registered operation permission information indicating a status permitted for the second terminal device and the status received by the management controller itself from the second terminal device, and generating an image indicating that the second terminal device is performing an operation as not matching the operation permission information if the status includes a status not matching the operation permission information; and
projecting, by the projector, the image indicating that the second terminal device is performing an operation as not matching the operation permission information.

11. A projection apparatus capable of performing wireless connection with a first terminal device and with a second terminal device, the projection apparatus comprising:
a projector configured to project an image;
a communication unit configured to communicate with the first terminal device and with the second terminal device by wireless communication; and
a management controller configured to manage the wireless communication with the first terminal device and with the second terminal device,
wherein the management controller generates a terminal connection image including permission information for connecting the second terminal device to the projection apparatus, based on terminal connection permission information for connection of the second terminal device, after receiving control information for allowing the second terminal device to connect with the projection apparatus from the first terminal device under condition that the second terminal device does not connect with the projection apparatus via the communication unit and that only the first terminal device among terminal devices connects with the projection apparatus via the communication unit,
wherein the projector projects the terminal connect

Assignees

• Maxell Ltd

Inventors

• Kamimura Junji

Classifications

• H04W12/06

  Authentication · CPC title

• H04L63/105

  Multiple levels of security · CPC title

• H04L63/083

  using passwords (cryptographic mechanisms or cryptographic arrangements for entity authentication using a predetermined code H04L9/3226) · CPC title

• G06F3/147

  using display panels · CPC title

• H04W12/77

  Graphical identity · CPC title