WO2011025296A2 - Wireless av transmission device and wireless av reception device - Google Patents

Wireless av transmission device and wireless av reception device Download PDF

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Publication number
WO2011025296A2
WO2011025296A2 PCT/KR2010/005777 KR2010005777W WO2011025296A2 WO 2011025296 A2 WO2011025296 A2 WO 2011025296A2 KR 2010005777 W KR2010005777 W KR 2010005777W WO 2011025296 A2 WO2011025296 A2 WO 2011025296A2
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WO
WIPO (PCT)
Prior art keywords
wireless
signal
modulation
demodulation block
transmission device
Prior art date
Application number
PCT/KR2010/005777
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French (fr)
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WO2011025296A3 (en
Inventor
Hojin Roh
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Lg Innotek Co., Ltd.
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Publication date
Application filed by Lg Innotek Co., Ltd. filed Critical Lg Innotek Co., Ltd.
Publication of WO2011025296A2 publication Critical patent/WO2011025296A2/en
Publication of WO2011025296A3 publication Critical patent/WO2011025296A3/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits

Definitions

  • the present invention relates to a wireless device, and more particularly to a wireless AV (Audio/Video) transmission device and a wireless AV reception device configured to reduce unnecessary power consumption.
  • a wireless AV Audio/Video
  • the electronic devices configured to output audio/video signals or audio signals may include TV (television) sets, DVD (Digital Versatile Disc) players, video players and audio systems.
  • TV television
  • DVD Digital Versatile Disc
  • the TV outputs a broadcasting signal transmitted from a broadcasting station on a screen or a speaker, or outputs a broadcasting signal and/or an audio signal transmitted from a DVD player or a video player through a wired line on a screen and a screen.
  • a recently-developed externally-boxed device is connected to a TV set to receive a signal transmitted from a DVD player or a video player, and to transmit the signals to a wiredly-connected TV set. Therefore, the externally boxed device and the TV set that are wiredly connected cannot be considered as a perfect wireless system. In order to implement a perfect wireless environment in a house or an office, it is imperative that other types of electronic devices should be developed. Furthermore, an electronic device configured to implement a wireless environment needs to minimize power consumption.
  • the present invention is directed to a wireless AV (Audio/Video) transmission device and a wireless AV reception device configured to reduce unnecessary power consumption.
  • AV Audio/Video
  • An object of the invention is to solve at least one or more of the above problems and/or disadvantages in a whole or in part and to provide at least the advantages described hereinafter.
  • a wireless AV Audio/Video
  • a wireless AV reception device configured to reduce unnecessary power consumption.
  • a wireless AV (Audio/Video) transmission device characterized by: a modulation/demodulation block configured to receive an AV signal from a source device via a cable, to modulate/demodulate the signal and transmit the modulated/demodulated signal; a wireless AV transmitter configured to wirelessly transmit the signal provided from the modulation/demodulation block; a DC/DC converting enabler configured to provide a power source to the wireless AV transmission device; and a central processing device configured to controllably disable the DC/DC converting enabler to supply the power to the wireless AV transmitter by detecting that the AV signal fails to be transmitted from the source device to the modulation/demodulation block.
  • the cable may be an HDMI (High Definition Multimedia Interface).
  • the modulation/demodulation block may convert a signal transmitted in TMDS (Transition Minimized Differential Signaling) format.
  • TMDS Transition Minimized Differential Signaling
  • the central processing device may communicate with the modulation/demodulation block via I2C format.
  • the central processing device may control the DC/DC converting enabler using GPIO (General Purpose Input/Output) port.
  • GPIO General Purpose Input/Output
  • the source device may be one of a Bluetooth, a DVD player and a settop box.
  • a wireless AV reception device characterized by: a modulation/demodulation block configured to transmit an AV signal to an output device via a cable; a wireless AV receiver configured to wirelessly receive a signal and to transmit the signal to the modulation/demodulation block; a DC/DC converting enabler configured to provide a power source to the wireless AV receiver; and a central processing device configured to controllably disable the DC/DC converting enabler to supply the power to the wireless AV transmitter by detecting that the modulation/demodulation block fails to transmit the signal to the output device.
  • the cable may be an HDMI (High Definition Multimedia Interface).
  • the modulation/demodulation block may convert a signal transmitted in TMDS (Transition Minimized Differential Signaling) format.
  • TMDS Transition Minimized Differential Signaling
  • the central processing device may communicate with the modulation/demodulation block via I2C format.
  • the central processing device may control the DC/DC converting enabler using GPIO (General Purpose Input/Output) port.
  • GPIO General Purpose Input/Output
  • the output device may be a TV set or a radio set.
  • the present invention has an advantageous effect in that a power of an essential block is interrupted to greatly reduce the power consumption if a wireless AV transmitter of a wireless AV transmission device, or a wireless AV receiver of a wireless AV reception device fails to transmit a TMDS type wireless AV signal or fails to receive the TMDS type wireless AV signal.
  • FIG. 1 is a block diagram illustrating a wireless AV transmission/reception devices according to the present invention.
  • FIG. 2 is a block diagram illustrating a wireless AV transmission device according to an exemplary embodiment of the present invention.
  • FIG. 3 is a block diagram illustrating a wireless AV reception device according to an exemplary embodiment of the present invention.
  • FIG. 1 is a block diagram illustrating a wireless AV transmission/reception devices according to the present invention.
  • a wireless AV transmission/reception system may include a wireless AV transmission device (12) and a wireless AV reception device (13).
  • the wireless AV transmission device (12) receives an AV signal from an image source-providing device (10) such as, but not limited thereto, a Bluetooth (trademark), a DVD player and settop box via an HDMI (High Definition Multimedia Interface) cable (11) and wirelessly outputs the signal.
  • the wireless AV reception device (13) wirelessly receives an AV signal from the wireless AV transmission device (12) and transmits the signal to a TV set (15) via an HDMI cable (14).
  • the wireless AV transmission device (12) in a case power of the device (10) providing an image source to the wireless AV transmission device (12) (i.e., a Bluetooth, a DVD player, a settop box and a notebook) goes standby, or in a case an image signal output is ended, the wireless AV transmission device (12) also needs a configuration that changes to a standby mode. In a case a TV set goes on a power-saving mode or a power thereto is turned off, the wireless AV reception device (13) also needs a configuration that automatically changes to power-saving mode.
  • the wireless AV reception device (12) In a case a TV set goes on a power-saving mode or a power thereto is turned off, the wireless AV reception device (13) also needs a configuration that automatically changes to power-saving mode.
  • the present invention discloses a wireless AV transmission device and a wireless AV reception device capable of providing the power-saving mode.
  • FIG. 2 is a block diagram illustrating a wireless AV transmission device according to an exemplary embodiment of the present invention.
  • a wireless AV transmission device (20) may include a TMDS (Transition Minimized Differential Signaling) modulation/demodulation block (21), a central processing device (22), a DC/DC converting enabler (23) and a wireless AV transmitter (24).
  • TMDS Transition Minimized Differential Signaling
  • central processing device 22
  • DC/DC converting enabler 2
  • wireless AV transmitter 24
  • the TMDS (Transition Minimized Differential Signaling) modulation/demodulation block (21) is a block modulating/demodulating a TMDS signal transmitted via an HDMI cable, and the central processing device (22) communicates with the TMDS modulation/demodulation block (21) using I2C type signal format.
  • the DC/DC converting enabler (23) receives a power from outside and supplies the power to the wireless AV transmitter (24) via a power line.
  • the central processing device (22) uses a GPIO (General Purpose Input/Output) port to control the DC/DC converting enabler (23).
  • GPIO General Purpose Input/Output
  • the wireless AV transmitter (24) is a block that processes a TMDS type AV signal provided from the TMDS modulation/demodulation block (21) and transmits the signal wirelessly.
  • the wireless AV transmitter (24) may include several blocks (not shown) that are needed by the wireless AV transmission device (20).
  • the TMDS modulation/demodulation block (21) receives a TMDS signal transmitted via the HDMI cable and converts the signal.
  • the central processing device (22) determines whether the TMDS modulation/demodulation block (21) is inputted with an AV signal via the HDMI cable, and detects if there is no AV signal. At this time, in a case there is no AV signal, the central processing device (22) controls in such a manner that no power is supplied to the wireless AV transmitter (24) from the DC/DC converting enabler (23) via the GPIO port.
  • the wireless AV transmission device determines whether a TMDS signal (particularly signal level) provided from a source device that supplies an AV signal is present or absent and disables essential blocks provided at the wireless AV transmission device (20) to operate. Therefore, the wireless AV transmission device (20) according to an exemplary embodiment of the present invention controls the DC/DC converting enabler (23) to disable each functional part to fail to receive power, thereby reducing the unnecessary power consumption, if it is determined that an image signal is not received from a source device that provides the AV signal.
  • FIG. 3 is a block diagram illustrating a wireless AV reception device according to an exemplary embodiment of the present invention.
  • a wireless AV reception device (30) may include a TMDS (Transition Minimized Differential Signaling) modulation/demodulation block (31), a central processing device (32), a DC/DC converting enabler (33) and a wireless AV receiver (34).
  • TMDS Transition Minimized Differential Signaling
  • central processing device 32
  • DC/DC converting enabler 3
  • wireless AV receiver 34
  • the TMDS (Transition Minimized Differential Signaling) modulation/demodulation block (31) is a block modulating/demodulating to a TMDS signal and transmitting the signal to a display unit (40) via an HDMI cable, and the central processing device (32) communicates with the TMDS modulation/demodulation block (31) using I2C type signal format.
  • the DC/DC converting enabler (33) receives a power from outside and supplies the power to the wireless AV receiver (34) via a power line.
  • the central processing device (32) uses a GPIO (General Purpose Input/Output) port to control the DC/DC converting enabler (33).
  • GPIO General Purpose Input/Output
  • the wireless AV receiver (34) is a block that wirelessly receives/processes an AV signal from the AV transmission device and transmits the signal to the TMDS modulation/demodulation block (31).
  • the wireless AV receiver (34) may include several necessary blocks that are not shown in FIG.3.
  • the TMDS modulation/demodulation block (31) detects the state.
  • a register setting inside the TMDS modulation/demodulation block (31) is changed based on output state of an image signal.
  • the central processing device reads out the register setting, and determines whether an image signal is not outputted. If it is determined that no image signal is outputted, the central processing device controls in such a way that no power is provided by the DC/DC converting enabler (33) to the wireless AV receiver (34) via the GPIO port.
  • the wireless AV reception device (30) determines whether the TMDS signal is transmitted to the display unit (40) and disables each block formed at the wireless AV reception device (30) to operate. Therefore, the wireless AV reception device (30) can remove unnecessary power consumption in a case the display unit (40) is not operated.
  • the display unit (40) may be a device outputting an image or a sound such as a TV set, or a device outputting sound only like a radio set.
  • the present invention has industrial applicability in that a power of an essential block is interrupted to greatly reduce the power consumption if a wireless AV transmitter of a wireless AV transmission device, or a wireless AV receiver of a wireless AV reception device fails to transmit a TMDS type wireless AV signal or fails to receive the TMDS type wireless AV signal.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)
  • Transmitters (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

The present invention relates to a wireless AV (Audio/Video) transmission device and a wireless AV reception device configured to reduce unnecessary power consumption, wherein the wireless AV (Audio/Video) transmission device includes a modulation/demodulation block configured to receive an AV signal from a source device via a cable, to modulate/demodulate the signal and transmit the modulated/demodulated signal, a wireless AV transmitter configured to wirelessly transmit the signal provided from the modulation/demodulation block, a DC/DC converting enabler configured to provide a power source to the wireless AV transmission device, and a central processing device configured to controllably disable the DC/DC converting enabler to supply the power to the wireless AV transmitter by detecting that the AV signal fails to be transmitted from the source device to the modulation/demodulation block.

Description

WIRELESS AV TRANSMISSION DEVICE AND WIRELESS AV RECEPTION DEVICE
The present invention relates to a wireless device, and more particularly to a wireless AV (Audio/Video) transmission device and a wireless AV reception device configured to reduce unnecessary power consumption.
As technologies are advanced, various types of electronic devices are developed, among the variety of electronic devices, the electronic devices configured to output audio/video signals or audio signals may include TV (television) sets, DVD (Digital Versatile Disc) players, video players and audio systems.
In general, the TV outputs a broadcasting signal transmitted from a broadcasting station on a screen or a speaker, or outputs a broadcasting signal and/or an audio signal transmitted from a DVD player or a video player through a wired line on a screen and a screen.
As scientific technologies are advanced, technologies capable of transmitting an audio signal and a video signal wirelessly have developed. A recently-developed externally-boxed device is connected to a TV set to receive a signal transmitted from a DVD player or a video player, and to transmit the signals to a wiredly-connected TV set. Therefore, the externally boxed device and the TV set that are wiredly connected cannot be considered as a perfect wireless system. In order to implement a perfect wireless environment in a house or an office, it is imperative that other types of electronic devices should be developed. Furthermore, an electronic device configured to implement a wireless environment needs to minimize power consumption.
Accordingly, the present invention is directed to a wireless AV (Audio/Video) transmission device and a wireless AV reception device configured to reduce unnecessary power consumption.
Technical problems to be solved by the present invention are not restricted to the above-mentioned problems, and any other technical problems not mentioned so far will be clearly appreciated from the following description by skill in the art.
An object of the invention is to solve at least one or more of the above problems and/or disadvantages in a whole or in part and to provide at least the advantages described hereinafter. In order to achieve at least the above objects, in whole or in part, and in accordance with the purposes of the disclosure, as embodied and broadly described, there is provided a wireless AV (Audio/Video) transmission device and a wireless AV reception device configured to reduce unnecessary power consumption.
In one general aspect of the present invention, there is provided a wireless AV (Audio/Video) transmission device, characterized by: a modulation/demodulation block configured to receive an AV signal from a source device via a cable, to modulate/demodulate the signal and transmit the modulated/demodulated signal; a wireless AV transmitter configured to wirelessly transmit the signal provided from the modulation/demodulation block; a DC/DC converting enabler configured to provide a power source to the wireless AV transmission device; and a central processing device configured to controllably disable the DC/DC converting enabler to supply the power to the wireless AV transmitter by detecting that the AV signal fails to be transmitted from the source device to the modulation/demodulation block.
In some exemplary embodiments of the present invention, the cable may be an HDMI (High Definition Multimedia Interface).
In some exemplary embodiments of the present invention, the modulation/demodulation block may convert a signal transmitted in TMDS (Transition Minimized Differential Signaling) format.
In some exemplary embodiments of the present invention, the central processing device may communicate with the modulation/demodulation block via I2C format.
In some exemplary embodiments of the present invention, the central processing device may control the DC/DC converting enabler using GPIO (General Purpose Input/Output) port.
In some exemplary embodiments of the present invention, the source device may be one of a Bluetooth, a DVD player and a settop box.
In another general aspect of the present invention, there is provided a wireless AV reception device, characterized by: a modulation/demodulation block configured to transmit an AV signal to an output device via a cable; a wireless AV receiver configured to wirelessly receive a signal and to transmit the signal to the modulation/demodulation block; a DC/DC converting enabler configured to provide a power source to the wireless AV receiver; and a central processing device configured to controllably disable the DC/DC converting enabler to supply the power to the wireless AV transmitter by detecting that the modulation/demodulation block fails to transmit the signal to the output device.
In some exemplary embodiments of the present invention, the cable may be an HDMI (High Definition Multimedia Interface).
In some exemplary embodiments of the present invention, the modulation/demodulation block may convert a signal transmitted in TMDS (Transition Minimized Differential Signaling) format.
In some exemplary embodiments of the present invention, the central processing device may communicate with the modulation/demodulation block via I2C format.
In some exemplary embodiments of the present invention, the central processing device may control the DC/DC converting enabler using GPIO (General Purpose Input/Output) port.
In some exemplary embodiments of the present invention, the output device may be a TV set or a radio set.
As explained in the foregoing, the present invention has an advantageous effect in that a power of an essential block is interrupted to greatly reduce the power consumption if a wireless AV transmitter of a wireless AV transmission device, or a wireless AV receiver of a wireless AV reception device fails to transmit a TMDS type wireless AV signal or fails to receive the TMDS type wireless AV signal.
FIG. 1 is a block diagram illustrating a wireless AV transmission/reception devices according to the present invention.
FIG. 2 is a block diagram illustrating a wireless AV transmission device according to an exemplary embodiment of the present invention.
FIG. 3 is a block diagram illustrating a wireless AV reception device according to an exemplary embodiment of the present invention.
Exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Detailed descriptions of well-known functions, configurations or constructions are omitted for brevity and clarity so as not to obscure the description of the present invention with unnecessary detail.
FIG. 1 is a block diagram illustrating a wireless AV transmission/reception devices according to the present invention.
Referring to FIG. 1, a wireless AV transmission/reception system may include a wireless AV transmission device (12) and a wireless AV reception device (13). The wireless AV transmission device (12) receives an AV signal from an image source-providing device (10) such as, but not limited thereto, a Bluetooth (trademark), a DVD player and settop box via an HDMI (High Definition Multimedia Interface) cable (11) and wirelessly outputs the signal. The wireless AV reception device (13) wirelessly receives an AV signal from the wireless AV transmission device (12) and transmits the signal to a TV set (15) via an HDMI cable (14).
At this time, in a case power of the device (10) providing an image source to the wireless AV transmission device (12) (i.e., a Bluetooth, a DVD player, a settop box and a notebook) goes standby, or in a case an image signal output is ended, the wireless AV transmission device (12) also needs a configuration that changes to a standby mode. In a case a TV set goes on a power-saving mode or a power thereto is turned off, the wireless AV reception device (13) also needs a configuration that automatically changes to power-saving mode.
Particularly, inasmuch as an electronic product can meet a requirement only if a standby power is 0.5 ~ 1W, the abovementioned functions are essential. The present invention discloses a wireless AV transmission device and a wireless AV reception device capable of providing the power-saving mode.
FIG. 2 is a block diagram illustrating a wireless AV transmission device according to an exemplary embodiment of the present invention.
Referring to FIG. 2, a wireless AV transmission device (20) according to an exemplary embodiment of the present invention may include a TMDS (Transition Minimized Differential Signaling) modulation/demodulation block (21), a central processing device (22), a DC/DC converting enabler (23) and a wireless AV transmitter (24).
The TMDS (Transition Minimized Differential Signaling) modulation/demodulation block (21) is a block modulating/demodulating a TMDS signal transmitted via an HDMI cable, and the central processing device (22) communicates with the TMDS modulation/demodulation block (21) using I2C type signal format. The DC/DC converting enabler (23) receives a power from outside and supplies the power to the wireless AV transmitter (24) via a power line. The central processing device (22) uses a GPIO (General Purpose Input/Output) port to control the DC/DC converting enabler (23).
The wireless AV transmitter (24) is a block that processes a TMDS type AV signal provided from the TMDS modulation/demodulation block (21) and transmits the signal wirelessly. The wireless AV transmitter (24) may include several blocks (not shown) that are needed by the wireless AV transmission device (20).
The TMDS modulation/demodulation block (21) receives a TMDS signal transmitted via the HDMI cable and converts the signal. The central processing device (22) determines whether the TMDS modulation/demodulation block (21) is inputted with an AV signal via the HDMI cable, and detects if there is no AV signal. At this time, in a case there is no AV signal, the central processing device (22) controls in such a manner that no power is supplied to the wireless AV transmitter (24) from the DC/DC converting enabler (23) via the GPIO port.
That is, the wireless AV transmission device according to the present invention determines whether a TMDS signal (particularly signal level) provided from a source device that supplies an AV signal is present or absent and disables essential blocks provided at the wireless AV transmission device (20) to operate. Therefore, the wireless AV transmission device (20) according to an exemplary embodiment of the present invention controls the DC/DC converting enabler (23) to disable each functional part to fail to receive power, thereby reducing the unnecessary power consumption, if it is determined that an image signal is not received from a source device that provides the AV signal.
FIG. 3 is a block diagram illustrating a wireless AV reception device according to an exemplary embodiment of the present invention.
Referring to FIG. 3, a wireless AV reception device (30) according to an exemplary embodiment of the present invention may include a TMDS (Transition Minimized Differential Signaling) modulation/demodulation block (31), a central processing device (32), a DC/DC converting enabler (33) and a wireless AV receiver (34).
The TMDS (Transition Minimized Differential Signaling) modulation/demodulation block (31) is a block modulating/demodulating to a TMDS signal and transmitting the signal to a display unit (40) via an HDMI cable, and the central processing device (32) communicates with the TMDS modulation/demodulation block (31) using I2C type signal format. The DC/DC converting enabler (33) receives a power from outside and supplies the power to the wireless AV receiver (34) via a power line. The central processing device (32) uses a GPIO (General Purpose Input/Output) port to control the DC/DC converting enabler (33).
The wireless AV receiver (34) is a block that wirelessly receives/processes an AV signal from the AV transmission device and transmits the signal to the TMDS modulation/demodulation block (31). The wireless AV receiver (34) may include several necessary blocks that are not shown in FIG.3.
In a case the display unit (40) is turned off or on a standby mode, which is a state where the TMDS signal is not transmitted to the display unit (40) via the HDMI cable, the TMDS modulation/demodulation block (31) detects the state. To be more specific, a register setting inside the TMDS modulation/demodulation block (31) is changed based on output state of an image signal. The central processing device reads out the register setting, and determines whether an image signal is not outputted. If it is determined that no image signal is outputted, the central processing device controls in such a way that no power is provided by the DC/DC converting enabler (33) to the wireless AV receiver (34) via the GPIO port.
That is, the wireless AV reception device (30) according to an exemplary embodiment of the present invention determines whether the TMDS signal is transmitted to the display unit (40) and disables each block formed at the wireless AV reception device (30) to operate. Therefore, the wireless AV reception device (30) can remove unnecessary power consumption in a case the display unit (40) is not operated. The display unit (40) may be a device outputting an image or a sound such as a TV set, or a device outputting sound only like a radio set.
The present invention has industrial applicability in that a power of an essential block is interrupted to greatly reduce the power consumption if a wireless AV transmitter of a wireless AV transmission device, or a wireless AV receiver of a wireless AV reception device fails to transmit a TMDS type wireless AV signal or fails to receive the TMDS type wireless AV signal.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, the general inventive concept is not limited to the above-described embodiments. It will be understood by those of ordinary skill in the art that various changes and variations in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.

Claims (12)

  1. A wireless AV (Audio/Video) transmission device comprising:
    a modulation/demodulation block configured to receive an AV signal from a source device via a cable, to modulate/demodulate the signal and transmit the modulated/demodulated signal;
    a wireless AV transmitter configured to wirelessly transmit the signal provided from the modulation/demodulation block;
    a DC/DC converting enabler configured to provide a power source to the wireless AV transmission device; and
    a central processing device configured to controllably disable the DC/DC converting enabler to supply the power to the wireless AV transmitter by detecting that the AV signal fails to be transmitted from the source device to the modulation/demodulation block.
  2. The wireless AV (Audio/Video) transmission device of claim 1,
    wherein the cable is a HDMI (High Definition Multimedia Interface).
  3. The wireless AV (Audio/Video) transmission device of claim 1,
    wherein the modulation/demodulation block converts a signal transmitted in TMDS (Transition Minimized Differential Signaling) format.
  4. The wireless AV (Audio/Video) transmission device of claim 1,
    wherein the central processing device communicates with the modulation/demodulation block via I2C format.
  5. The wireless AV (Audio/Video) transmission device of claim 1,
    wherein the central processing device controls the DC/DC converting enabler using GPIO (General Purpose Input/Output) port.
  6. The wireless AV (Audio/Video) transmission device of claim 1,
    wherein the source device is any one of a Bluetooth (trademark), a DVD player and a settop box.
  7. A wireless AV reception device comprising:
    a modulation/demodulation block configured to transmit an AV signal to an output device via a cable;
    a wireless AV receiver configured to wirelessly receive a signal and to transmit the signal to the modulation/demodulation block;
    a DC/DC converting enabler configured to provide a power source to the wireless AV receiver; and
    a central processing device configured to controllably disable the DC/DC converting enabler to supply the power to the wireless AV transmitter by detecting that the modulation/demodulation block fails to transmit the signal to a output device.
  8. The wireless AV reception device of claim 7,
    wherein the cable is a HDMI (High Definition Multimedia Interface).
  9. The wireless AV reception device of claim 7,
    wherein the modulation/demodulation block converts a signal transmitted in TMDS (Transition Minimized Differential Signaling) format.
  10. The wireless AV reception device of claim 7,
    wherein the central processing device communicates with the modulation/demodulation block via I2C format.
  11. The wireless AV reception device of claim 7,
    wherein central processing device controls the DC/DC converting enabler using GPIO (General Purpose Input/Output) port.
  12. The wireless AV reception device of claim 7,
    wherein the output device is a TV set or a radio set.
PCT/KR2010/005777 2009-08-27 2010-08-27 Wireless av transmission device and wireless av reception device WO2011025296A2 (en)

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TWI431949B (en) 2014-03-21

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