News Column

Patent Issued for Control Method of an Audio/Video System

June 17, 2014



By a News Reporter-Staff News Editor at Journal of Technology -- From Alexandria, Virginia, VerticalNews journalists report that a patent by the inventors Chang, Chin-Chiang (New Taipei, TW); Chao, Kuang-Cheng (New Taipei, TW); Mai, Wei-Wen (New Taipei, TW); Lin, Chien-Cheng (New Taipei, TW); Chen, Min-I (New Taipei, TW); Wei, Wen-Kang (New Taipei, TW), filed on March 4, 2013, was published online on June 3, 2014.

The patent's assignee for patent number 8743293 is AmTran Technology Co., Ltd (Jhonghe District, New Taipei, TW).

News editors obtained the following quote from the background information supplied by the inventors: "The present invention relates to a control method of an audio/video system, especially a method for making audio/video devices, which are not the input source of a display device, automatically entering into standby state so as to save power.

"The high definition multimedia interface (HDMI) is widely used as a transmission interface of TVs, displays, notebooks and tablets due to the HDMI being capable of transmitting uncompressed high definition video data and multichannel audio data. The set-top box, video game console, Blu-ray player or other peripheral devices with the audio/video (A/V) processing functions generally have an HDMI port which can transmit processed A/V data or multimedia data to a display device for displaying images, thus increasing the functions of the system and allowing the user to more conveniently view multimedia images. For example, the user may view multimedia data other than programs of TV channels through connecting a multimedia set-top box to the display. When the user is controlling the multimedia set-top box, the multimedia set-top box will generate an on-screen display (OSD) menu displayed on the TV and the user can use a remote control to control the set-top box.

"However, if the user wants to control the TV and the multimedia set-top box at the same time, the user has to use two remote controls corresponding to the set-top box and TV respectively. This could be very inconvenient to operate. Besides, the image of the multimedia set-top box's user interface must be firstly generated by the multimedia set-top box and then transmitted to the display device for displaying. If the TV of a multimedia system incorporates the control function of the set-top box so the user can use the remote control of the TV to control the set-top box, the control signal to the set-top box will be transmitted from the TV to the set-top box when the user controls the set-top box, and then the set-top box will generate image of the user interface after processing the control signals. After the image of user interface is transmitted to the TV, and the TV can display the result corresponding to the control signal accordingly. In this way, a period of time is required for transmitting the control signal and images, thus delaying the result of the user's control operations to the set-top box. Under this situation, the multimedia system can not provide real-time operations to the user.

"In addition, the display devices of prior art usually include multiple signal input ports, e.g. the video graphics array (VGA), digital visual interface (DVI) and HDMI ports, for coupling to multiple A/V peripheral devices, e.g. personal computers, notebooks and multimedia set-top boxes. However, when a specific input port of a display device is selected as the signal source, the A/V devices corresponding to the unselected input ports will remain in current state instead of entering standby state automatically, thus increasing the overall power consumption. Moreover, it is very inconvenient for the user to manually turn off the peripheral devices corresponding to the unselected input ports one by one."

As a supplement to the background information on this patent, VerticalNews correspondents also obtained the inventors' summary information for this patent: "An embodiment of the present invention relates to an audio/video system, comprising a display having a plurality of input sources and a first peripheral device connected to one of the input sources. The display provides a user interface for receiving a switching command for switching current input source of the display among the input sources from a user, and the display automatically generates a first standby command to the first peripheral device when the received switching command is not switching the current input source to the input source corresponding to the first peripheral device.

"Another embodiment of the present invention relates to a method of controlling an audio/video system. The audio/video system comprises a display, a first peripheral device and a second peripheral device connected to the display. The method comprises receiving a command to switch current input source of the display, wherein the command to switch current input source of the display selects the first peripheral device as current input source of the display, selecting the first peripheral device as current input source, receiving and displaying image data from the first peripheral device, and the display automatically generating a first standby command to be transmitted to the second peripheral device.

"Another embodiment of the present invention relates to a display device, comprising a display component, a first connection port, a second connection port and a processor. The first connection port is capable of coupling to a first peripheral device. The second connection port is capable of coupling to a second peripheral device. The processor is connected to the display unit and generates a graphical user interface to be displayed by the display component, which allows a user to control the display device accordingly. The user interface provides an input source switching function, and when the display device receives a command to switch current input source which selects the first peripheral device as current input source of the display device, the processor will set the first peripheral device as current input source of the display device and automatically generates a standby command to the second peripheral device.

"These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings."

For additional information on this patent, see: Chang, Chin-Chiang; Chao, Kuang-Cheng; Mai, Wei-Wen; Lin, Chien-Cheng; Chen, Min-I; Wei, Wen-Kang. Control Method of an Audio/Video System. U.S. Patent Number 8743293, filed March 4, 2013, and published online on June 3, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8743293.PN.&OS=PN/8743293RS=PN/8743293

Keywords for this news article include: AmTran Technology Co. Ltd.

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Source: Journal of Technology


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