Remote control unit

• US 20060158571A1
• Filed: 01/17/2006
• Published: 07/20/2006
• Est. Priority Date: 01/18/2005
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Tsunoda, Takashi, Itazawa, Toshiaki
• Granted Patent: US 8,072,550 B2
• Time in Patent Office: Days
• US Class Current: 348/734
• CPC Class Codes: H04N 21/41265 having a remote control device for bidirectional communication between the remote control device and client device unidirectional remote control device H04N21/42204
• CPC Class Codes: H04N 21/42204 User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor constructive details of casings for the remote control device H01H9/0235; user interfaces for controlling a tuning device of a television receiver through a remote control H03J9/00; remote control of peripheral devices connected to a television receiver through the remote control device of the television receiver H04B1/205
• CPC Class Codes: H04N 21/42209 for displaying non-command information, e.g. electronic program guide [EPG], e-mail, messages or a second television channel
• CPC Class Codes: H04N 5/63 Generation or supply of power specially adapted for television receivers

Abstract

A remote control unit capable of bidirectionally communicating with a display apparatus, such as a television set. The remote control unit comprises a display unit adapted to display an image transmitted from the display apparatus, a detector unit adapted to detect a state of a power supply of the remote control unit, and a switching unit adapted to switch a display mode of the display unit from a moving image mode to a still image mode, according to the state of the power supply.

Claims

1. A remote control unit capable of bidirectionally communicating with a display apparatus, comprising:

a display unit adapted to display an image transmitted from the display apparatus;

a detector unit adapted to detect a state of a power supply of the remote control unit; and

a switching unit adapted to switch a display mode of the display unit from a moving image mode to a still image mode, according to the state of the power supply.

2. A remote control unit according to claim 1, wherein the power supply is a rechargeable battery.

3. A remote control unit according to claim 1, wherein the power supply is an unrechargeable battery.

4. A remote control unit according to claim 3, wherein if a voltage of the battery becomes lower than a predetermined level, the remote control unit gives a warning for replacement of the battery.

5. A remote control unit according to claim 1, wherein if a voltage of the power supply is not lower than a predetermined level, the remote control unit requests the display apparatus to switch an image to be transmitted to the remote control unit from a moving image to a still image.

6. A remote control unit according to claim 1, wherein if a voltage of the power supply is lower than a predetermined level, the remote control unit requests the display apparatus to switch an image to be transmitted to the remote control unit from a moving image to a still image.

7. A remote control unit according to claim 1, wherein the display apparatus is a television set.