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Patent Issued for Video Display System, Video Display Device, Its Control Method, and Information Storage Medium

June 3, 2014



By a News Reporter-Staff News Editor at Information Technology Newsweekly -- From Alexandria, Virginia, VerticalNews journalists report that a patent by the inventors Tsukagoshi, Ikuo (Tokyo, JP); Imai, Kenichi (Tokyo, JP); Ohshima, Takenori (Tokyo, JP); Nishimori, Yuichi (Tokyo, JP); Masuda, Masaru (Tokyo, JP), filed on May 17, 2007, was published online on May 20, 2014.

The patent's assignee for patent number 8730394 is Sony Corporation (Tokyo, JP).

News editors obtained the following quote from the background information supplied by the inventors: "There is available a video display device for displaying video on a monitor of, e.g., a home-use television set receiver and the like connected thereto, and reproducing sound via a speaker of the same. Also, some of the video display devices are portable video display devices which can be carried by a user. As one example, these video display devices read encoded video data and sound data from a computer readable information storage medium, such as a DVD, a hard disk, and the like, and then based on the read data, produces video data for display, in accordance with the capacity (size of the display screen and the like) of a monitor, and sound data for reproduction, in accordance with the capacity (the number of reproduction channels and the like) of a speaker. Then, the produced video data is displayed on the monitor and the produced sound data is reproduced via the speaker."

As a supplement to the background information on this patent, VerticalNews correspondents also obtained the inventors' summary information for this patent: "Problems to be Solved by the Invention

"However, according to the above-described conventional technique, the video display device merely outputs video data and sound data produced in accordance with its own monitor and speaker, or those connected thereto, to these monitors and speakers. Therefore, a user can look at and listen to the video data and sound data read by the video display device only on limited means.

"The present invention has been conceived in view of the above, and one of the objects of the present invention is to provide a video display system, a video display device, a control method for the video display device, and an information storage medium for making it possible for a user to look at and listen to video and sound on a variety of means.

"Means to Solve the Problems

"A video display system according to the present invention to attain the above described objects is a video display system having a video display device and a portable video display device, connected to each other for communication, wherein the video display device comprises own device video data producing means for producing own device video data to be displayed on the video display device; own device sound data producing means for producing own device sound data to be reproduced on the video display device; video and sound output means for displaying the produced own device video data and reproducing the produced own device sound data; other device video data producing means for producing other device video data in a data format different from a data format of the own device video data; other device sound data producing means for producing other device sound data in a data format different from a data format of the own device sound data; and data sending means for sending the other device video data and the other device sound data to the portable video display device, and the portable video display device comprises data receiving means for receiving the sent other device video data and the sent other device sound data; and video and sound output means for displaying the received other device video data and reproducing the received other device sound data.

"Also, another video display system according to the present invention is a video display system having a video display device and a portable video display device, connected to each other for communication, wherein the video display device comprises own device video data producing means for producing own device video data to be displayed on the video display device; own device sound data producing means for producing own device sound data to be reproduced on the video display device; video and sound output means for displaying the produced own device video data and reproducing the produced own device sound data; encoding means for encoding the own device video data and the own device sound data into a data format which the portable video display device is able to handle, to thereby produce other device video data and other device sound data; and data sending means for sending the other device video data and the other device sound data to the portable video display device, and the portable video display device comprises data receiving means for receiving the sent other device video data and the sent other device sound data; and video and sound output means for decoding and displaying the received other device video data and decoding and reproducing the received other device sound data.

"Also, a video display device according to the present invention is a video display device connected for communication to a portable video display device, comprising own device video data producing means for producing own device video data to be displayed on the video display device; own device sound data producing means for producing own device sound data to be reproduced on the video display device; video and sound output means for displaying the produced own device video data and reproducing the produced own device sound data; encoding means for encoding the own device video data and the own device sound data into a data format which the portable video display device is able to handle, to thereby produce other device video data and other device sound data; and data sending means for sending the other device video data and the other device sound data to the portable video display device.

"In the above described video display device, the encoding means may convert the own device video data into a size which the portable video display device is able to display, and then encode the own device video data that has been converted in size, to thereby produce the other device video data.

"Also, in the above described video display device, the encoding means may reduce a number of channels of the own device sound data, and then encode the own device sound data having a reduced number of channels, to thereby produce the other device sound data.

"Also, in the above described video display device, the own device video data producing means may decode encoded video data stored in storage means, to thereby produce the own device video data, the own device sound data producing means may decode encoded sound data stored in the storage means, to thereby produce the own device sound data, and the encoding means may encode at least one of the own device video data and the own device sound data into a data format different from that of the encoded video data and the encoded sound data stored in the storage means.

"Also, in the above described video display device, the encoding means may encode at least one of the own device video data and the own device sound data into a data format selected based on information received from the portable video display device.

"Also, the above described video display device may further comprise display mode switching means for receiving a connection start request and a connection end request sent from the portable video display device, then switching a display mode to an other device display mode in response to the received connection start request and to an own device display mode in response to the received connection end request; wherein the own device video data producing means may output the produced own device video data to a predetermined frame buffer when the display mode is the own device display mode, and to a memory area different from the frame buffer when the display mode is the other device display mode, the own device sound data producing means may output the produced own device sound data to a predetermined sound buffer when the display mode is the own device display mode, and to a memory area different from the sound buffer when the display mode is the other device display mode, the video and sound output means may read and display the own device video data from the frame buffer, and may read and reproduce the own device sound data from the sound buffer, and the encoding means may read and encode the own device video data and the own device sound data from the memory areas.

"Also, the above described video display device may be connected for communication to a plurality of portable video display devices, and may further comprise information holding means for holding information correlating each of the portable video display devices to any of a plurality of groups, and the encoding means may produce a plurality of same or different other device video data and a plurality of same or different other device sound data for the respective groups, and the data sending means may send the other device video data and the other device sound data produced for the respective groups to the respective portable video display devices correlated to the respective groups according to the held information.

"Also, a control method for a video display device according to the present invention is a control method for a video display device connected for communication to a portable video display device, comprising a step of producing own device video data to be displayed on the video display device; a step of producing own device sound data to be reproduced on the video display device; a step of displaying the produced own device video data and reproducing the produced own device sound data; a step of encoding the own device video data and the own device sound data into a data format which the portable video display device is able to handle, to thereby produce other device video data and other device sound data; and a step of sending the other device video data and the other device sound data to the portable video display device.

"Also, an information storage medium according to the present invention is a computer readable information storage medium storing a program for causing a video display device connected for communication to a portable video display device to function as own device video data producing means for producing own device video data to be displayed on the video display device; own device sound data producing means for producing own device sound data to be reproduced on the video display device; video and sound output means for displaying the produced own device video data on video display means and reproducing the produced own device sound data on sound reproducing means; encoding means for encoding the own device video data and the own device sound data into a data format which the portable video display device is able to handle, to thereby produce other device video data and other device sound data; and data sending means for sending the other device video data and the other device sound data to the portable video display device."

For additional information on this patent, see: Tsukagoshi, Ikuo; Imai, Kenichi; Ohshima, Takenori; Nishimori, Yuichi; Masuda, Masaru. Video Display System, Video Display Device, Its Control Method, and Information Storage Medium. U.S. Patent Number 8730394, filed May 17, 2007, and published online on May 20, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=62&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=3091&f=G&l=50&co1=AND&d=PTXT&s1=20140520.PD.&OS=ISD/20140520&RS=ISD/20140520

Keywords for this news article include: Sony Corporation, Information Technology, Information and Data Storage.

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Source: Information Technology Newsweekly


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