PROJECTION DEVICE, PROJECTION CONTROL METHOD AND PROGRAM

• US 20120075265A1
• Filed: 09/18/2011
• Published: 03/29/2012
• Est. Priority Date: 09/27/2010
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: OGURA, Tomotaka, Ikuta, Katsumi
• Granted Patent: US 10,205,993 B2
• Time in Patent Office: Days
• US Class Current: 345/204
• CPC Class Codes: H04N 21/42202 environmental sensors, e.g. for detecting temperature, luminosity, pressure, earthquakes
• CPC Class Codes: H04N 21/4223 Cameras H04N23/00 takes precedence
• CPC Class Codes: H04N 21/440263 by altering the spatial resolution, e.g. for displaying on a connected PDA
• CPC Class Codes: H04N 21/442 Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk arrangements for monitoring broadcast services or broadcast-related services H04H60/29; arrangements for identifying or recognising characteristics with a direct linkage to broadcast information H04H60/35; monitoring of user activities for profile generation for accessing a video database G06F16/739; monitoring in wireless networks H04W24/00
• CPC Class Codes: H04N 9/3185 Geometric adjustment, e.g. keystone or convergence optical or mechanical adjustment of convergence H04N9/317; using scanning means H04N3/22; optical or mechanical adjustments of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/14
• CPC Class Codes: H04N 9/3194 including sensor feedback

Abstract

A projection device includes a projection unit configured to project a screen, a distance detection unit configured to detect a projection distance of the screen, and a control unit configured to control the amount of information on the screen according to the projection distance detected by the distance detection unit.

Claims

1. A projection device comprising:

a projection unit configured to project a screen;

a distance detection unit configured to detect a projection distance of the screen; and

a control unit configured to control the amount of information on the screen according to the projection distance detected by the distance detection unit.

2. The projection device according to claim 1, wherein the control unit controls the amount of information on the screen to be increased as the projection distance is increased.

3. The projection device according to claim 2, wherein the control unit controls the amount of information on the screen according to a predetermined relationship between the projection distance and the amount of information.

4. The projection device according to claim 3, wherein the screen includes thumbnails of one or two or more pieces of content data, and

the control unit controls the number of thumbnails included in the screen according to the projection distance.

5. The projection device according to claim 4, wherein the control unit increases the number of thumbnails from a first number to a second number when the projection distance is greater than a first threshold and decreases the number of thumbnails from the second number to the first number if the projection distance is less than a second threshold less than the first threshold.

6. The projection device according to claim 2, further comprising:

an operation input unit; and

an operation display unit having a display function and an operation detection function,

wherein, if the screen is projected by the projection unit, the operation input unit receives a user operation, and

if the screen is displayed by the operation display unit, the operation display unit receives a user operation.

7. The projection device according to claim 6, wherein the operation display unit displays an induction screen for inducing a user operation for the operation input unit if the screen is projected by the projection unit.

8. The projection device according to claim 2, wherein the control unit does not change the current amount of information on the screen if detection of the projection distance by the distance detection unit fails.

9. The projection device according to claim 2, wherein the screen includes text information, and the control unit controls the amount of text information included in the screen according to the projection distance.

10. The projection device according to claim 2, further comprising an imaging unit,

wherein the distance detection unit detects the projection distance of the screen from a focal length of the imaging unit.

11. A projection control method comprising:

projecting a screen;

detecting a projection distance of the screen; and

controlling the amount of information on the screen according to the projection distance.

12. A program for executing a computer as a control unit for controlling the amount of information on a screen according to a projection distance of the projected screen.