Multimedia system and remote control device thereof

• US 8,654,062 B2
• Filed: 01/09/2009
• Issued: 02/18/2014
• Est. Priority Date: 02/01/2008
• Status: Active Grant

• Current Assignee: Xueshan Technologies Inc. (Wi-LAN Inc.)
• Original Assignee: MStar Semiconductor Incorporated (MediaTek, Inc.)
• Inventors: Shen, Yun-Hung
• Primary Examiner(s): Boddie, William
• Assistant Examiner(s): Okebato, Sahlu
• Application Number:
  US12/351,338
• Publication Number:
  US 20090195524A1
• Time in Patent Office: 1,866 Days
• Field of Search: 345/102, 345/207, 396 56- 59
• US Class Current: 345/102
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 2370/16 Use of wireless transmission of display information
• CPC Class Codes: G09G 5/00 Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators image data processing or generation, in general G06T

Abstract

A multimedia system and a remote control device are provided. The multimedia system includes a remote sensor, a wireless transmitter, and a display apparatus. The remote sensor is used for sensing an environmental luminance. The wireless transmitter is used for transmitting a control signal corresponding to the environmental luminance. The display apparatus includes a light source and a wireless receiver. The display apparatus receives the control signal via the wireless receiver and adjusts a brightness level of the light source based on the control signal.

Claims

1. A multimedia system, comprising:

a remote sensor for sensing a user environmental luminance, the remote sensor being provided near a user to sense the user environmental luminance around the user;

a wireless transmitter, coupled to the remote sensor, for transmitting a control signal corresponding to the user environmental luminance; and

a display apparatus, comprising a wireless receiver receiving the control signal and a light source providing light for the display apparatus, the display apparatus further comprising a near-end sensor for sensing a neighboring luminance;

wherein the display apparatus receives the control signal from the wireless transmitter and the neighboring luminance from the near-end sensor via wired transmission, and adjusts a brightness level of the light source according to the control signal and the neighboring luminance to achieve a brightness adjustment for the display apparatus.

2. The multimedia system of claim 1, wherein the light source comprises a cold cathode fluorescent lamp (CCFL) or a light emitting diode (LED) lamp.

3. The multimedia system of claim 1, wherein the remote sensor and the wireless transmitter are integrated in a remote control device capable of communicating with the display apparatus.

4. The multimedia system of claim 1, wherein the wireless transmitter communicates with the wireless receiver via an infra-red (IR) signal or a radio frequency (RF) signal.

5. A multimedia system, comprising:

a remote sensor, for sensing a user environmental color temperature, the remote sensor being provided near a user to sense the user environmental color temperature;

a wireless transmitter, coupled to the remote sensor, for transmitting a control signal corresponding to the user environmental color temperature; and

a display apparatus, comprising a wireless receiver receiving the control signal and a light source providing light for the display apparatus,

the display apparatus further comprising a near-end sensor for sensing a neighboring color temperature;

wherein the display apparatus receives the control signal from the wireless transmitter and the neighboring color temperature from the near-end sensor via wired transmission, and adjusts a brightness level of the light source and performs a white balance procedure on an image to be displayed according to the received control signal and the neighboring color temperature to achieve a white balance adjustment for the display apparatus.

6. The multimedia system of claim 5, wherein the remote sensor comprises a set of RGB light sensors and an analog-to-digital converter for converting a sensed result of the set of RGB light sensors into the control signal.

7. The multimedia system of claim 5, wherein the display apparatus adjusts a gray level of the image during the white balance procedure.

8. The multimedia system of claim 5, wherein the display apparatus adjusts the brightness level of the light source during the white balance procedure.

9. The multimedia system of claim 8, wherein the light source comprises an LED lamp.

10. The multimedia system of claim 5, wherein the remote sensor and the wireless transmitter are integrated in a remote control device capable of communicating with the display apparatus.

11. The multimedia system of claim 5, wherein the wireless transmitter communicates with the wireless receiver via an IR signal or an RF signal.

12. A remote control device, comprising:

sensor, for sensing a user environmental parameter,

the remote sensor being provided near a user to sense the user environmental parameter around the user; and

a wireless transmitter, coupled to the sensor, for transmitting a control signal corresponding to the user environmental parameter to a display apparatus;

wherein the display apparatus comprises a light source providing light for the apparatus, the display apparatus further comprises a near-end sensor for sensing a neighboring environmental parameter, the display apparatus receives the control signal from the wireless transmitter and the neighboring environmental parameter from the near-end sensor via wired transmission˜ and

the display apparatus adjusts a brightness level of the light source according to the received control signal and the neighboring environmental parameter to achieve a brightness adjustment for the display apparatus.

13. The remote control device of claim 12, wherein the user environmental parameter is selected from a group consisting of an environmental luminance and an environmental color temperature.

14. The remote control device of claim 12, wherein after receiving the control signal from the wireless transmitter, the display apparatus performs a white balance procedure for an image based on the control signal.

15. The remote control device of claim 12, wherein the wireless transmitter communicates with the display apparatus via an IR signal or an RF signal.

16. The remote control device of claim 12, wherein the remote control device comprises a set of RGB light sensors and an analog-to-digital converter for converting a sensed result of the set of RGB light sensors into the control signal.