Wireless transmitter, wireless television system, and controlling method thereof

• US 8,243,209 B2
• Filed: 10/23/2006
• Issued: 08/14/2012
• Est. Priority Date: 11/02/2005
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Sang Hyun
• Primary Examiner(s): Kostak, Victor
• Application Number:
  US12/092,393
• Publication Number:
  US 20080256587A1
• Time in Patent Office: 2,122 Days
• Field of Search: 348/739, 348/723, 348/730, 348/839, 348/553, 348/734, 348/838, 348/836, 725/81, 345/156
• US Class Current: 348/739
• CPC Class Codes: G08C 17/00 Arrangements for transmitting signals characterised by the use of a wireless electrical link
• CPC Class Codes: G08C 23/00 Non-electrical signal transmission systems, e.g. optical systems
• 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
• CPC Class Codes: H04N 5/38 Transmitter circuitry for the transmission of television signals according to analogue transmission standards H04N5/14 takes precedence

Abstract

Provided are a wireless television system and a wireless transmitter, capable of automatically turning off a light-emitting unit installed in the wireless transmitter depending on a power state of the wireless transmitter and the wireless television system. The wireless television system includes: a wireless transmitter for relaying a video signal received from the outside; a wireless television for receiving the video signal from the wireless transmitter and displaying an image corresponding to the received composite video signal; a light-emitting unit installed in at least one of the wireless transmitter and the wireless television, and displaying one of a power state and a signal transmission/reception state from one of the wireless transmitter and the wireless television; and a light-emission control unit for controlling the light-emitting unit to emit light when both power of the wireless transmitter and power the wireless television are turned on.

Claims

1. A wireless television system comprising:

a wireless transmitter for relaying a video signal received from the outside;

a wireless television for receiving the video signal from the wireless transmitter and displaying an image corresponding to the received video signal;

a light-emitting unit installed in at least one of the wireless transmitter and the wireless television, and displaying one of a power state and a signal transmission/reception state from one of the wireless transmitter and the wireless television; and

a light-emission control unit for controlling the light-emitting unit to emit light when a data signal is transmitted/received between the wireless transmitter and the wireless television,

wherein the light-emission control unit comprises;

a first switch switched when power of the wireless transmitter is turned on;

a second switch switched when a signal transmission/reception loop is formed between the wireless transmitter and the wireless television; and

a third switch for allowing the light-emitting unit to blink when a data signal is transmitted/received between the wireless transmitter and the wireless television.

2. The wireless television system according to claim 1, wherein the first to third switches control supplying of drive power to the light-emitting unit and electrically connect to the light-emitting unit installed in the wireless transmitter, and control supplying of drive power to the light-emitting unit.

3. The wireless television system according claim 2, wherein the first to third switches are series-connected to each other such that drive power is supplied to the light-emitting unit only when all of the first to third switches are turned on.

4. The wireless television system according to claim 1, wherein the wireless transmitter outputs a light-emission control signal to the light-emission control unit depending on a power state of the wireless transmitter and/or forming of a signal transmission/reception loop between the wireless transmitter and the wireless television.

5. The wireless television system according to claim 4, wherein the light-emission control signal comprises:

a first control signal activated when power of the wireless transmitter is turned on; and

a second control signal activated when both power of the wireless transmitter and power of the wireless television are turned on.

6. The wireless television system according to claim 5, wherein the light-emission control signal further comprises a third control signal for allowing the light-emitting unit to blink when a data signal is transmitted/received between the wireless transmitter and the wireless television.

7. A wireless transmitter for relaying video signals received from the outside, the wireless transmitter comprising:

a transmission unit for wirelessly transmitting the video signals to a wireless television;

a light-emitting unit for displaying one of a power state of the wireless transmitter and a signal transmission state of the transmission unit; and

a light-emission control unit for controlling the light-emitting unit to emit light when a data signal is transmitted/received between the wireless transmitter and the wireless television,

wherein the light-emission control unit comprises;

a first switch switched when power of the wireless transmitter is turned on;

a second switch switched when a signal transmission/reception loop is formed between the wireless transmitter and the wireless television; and

a third switch for allowing the light-emitting unit to blink when a data signal is transmitted/received between the wireless transmitter and the wireless television.

8. The wireless transmitter according to claim 7, wherein the first to third switches control supplying of drive power to the light-emitting unit.

9. The wireless transmitter according to claim 8, wherein the first to third switches are series-connected to each other such that drive power is supplied to the light-emitting unit only when all of the first to third switches are turned on.

10. The wireless transmitter according to claim 7, further comprising a main control unit for outputting a light-emission control signal to the light-emission control unit depending on a power state of the wireless transmitter and/or forming of a signal transmission/reception loop between the wireless transmitter and the wireless television.

11. The wireless transmitter according to claim 10, wherein the light-emission control signal comprises:

a first control signal activated when power of the wireless transmitter is turned on; and

a second control signal activated when both power of the wireless transmitter and power of the wireless television are turned on.

12. The wireless transmitter according to claim 11, wherein the light-emission control signal further comprises a third control signal for allowing the light-emitting unit to blink when a data signal is transmitted/received between the wireless transmitter and the wireless television.

13. A method for controlling a wireless television system, the method comprising:

providing power to at least one of a wireless transmitter and a wireless television;

detecting power providing states of the wireless transmitter and the wireless television;

generating at least one control signal for controlling a light-emitting unit for displaying one of a power state and a signal transmission state of the wireless transmitter depending on the detection results; and

when a data signal is transmitted/received between the wireless transmitter and the wireless television in response to the control signal, controlling the light-emitting unit to emit light,

wherein the generating of at least one control signal comprises;

generating a first control signal activated when power of the wireless transmitter is turned on;

generating a second control signal activated when both power of the wireless transmitter and power of the wireless television are turned on; and

a third control signal for allowing the light-emitting unit to blink when a data signal is transmitted/received between the wireless transmitter and the wireless television.

14. The method according to claim 13, wherein the controlling of the light-emitting unit comprises controlling supplying of drive power to the light-emitting unit by controlling a switching part electrically connected to the light-emitting unit in response to the control signal.

15. The method according to claim 14, wherein the controlling of the light-emitting unit further comprises:

switching a first switch when power of the wireless transmitter is turned on; and

switching a second switch when a signal transmission/reception loop is formed between the wireless transmitter and the wireless television.

16. The method according to claim 15, wherein the controlling of the light-emitting unit further comprises switching a third switch to allow the light-emitting unit to blink when a data signal is transmitted/received between the wireless transmitter and the wireless television.

17. A wireless television comprising:

a display unit for receiving an image signal from a wireless transmitter and displaying an image corresponding to the received image signal;

a light-emitting unit for displaying one of a power state of the display unit and a signal reception state of the display unit; and

a light-emission control unit for controlling the light-emitting unit to emit light when a data signal is transmitted/received between the wireless transmitter and the wireless television,

wherein the light-emission control unit comprises;

a first switch switched when power of the wireless transmitter is turned on;

a second switch switched when a signal transmission/reception loop is formed between the wireless transmitter and the wireless television; and

a third switch for allowing the light-emitting unit to blink when a data signal is transmitted/received between the wireless transmitter and the wireless television.

18. The wireless television according to claim 17, wherein the light-emission control unit outputs a power-on signal of the wireless television as a first control signal, and outputs a signal generated by detection of a loop back flag as a second control signal when both power of the wireless transmitter and power of the wireless television are turned on.

19. The wireless television according to claim 18, wherein the light-emission control unit outputs the data signal transmitted and received between the wireless transmitter and the wireless television as a third control signal.