Patents by Inventor Tetsuro Shida

Tetsuro Shida has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8908629
    Abstract: A bandwidth reservation apparatus and bandwidth reservation method that enable a communication apparatus to quickly begin and stably carry out a data transmission, and a communication apparatus and communication system including the bandwidth reservation apparatus.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: December 9, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventor: Tetsuro Shida
  • Publication number: 20130232532
    Abstract: A bandwidth reservation apparatus and bandwidth reservation method that enable a communication apparatus to quickly begin and stably carry out a data transmission, and a communication apparatus and communication system including the bandwidth reservation apparatus.
    Type: Application
    Filed: June 6, 2011
    Publication date: September 5, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Tetsuro Shida
  • Patent number: 8385198
    Abstract: The transmission terminal in a wireless communication system includes: a communication unit for intermittently transmitting a radio signal; a transmission-side beacon reception unit; a beacon analysis unit for analyzing the received beacon signal; and a transmission output level change unit for estimating an emission time period of a beacon signal to be received by the transmission-side beacon reception unit on the basis of the beacon period information and the beacon reception time information, thereby obtaining an estimated emission time period; wherein the transmission output level change unit instructs the transmission-side communication unit to transmit the radio signal having a raised transmission output level during at least the estimated emission time period, the raised transmission output level being higher than a transmission output level during a time period other than at least the estimated emission time period.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: February 26, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Midori Sakaguchi, Hideaki Kosaka, Tetsuro Shida, Toshimitsu Sato
  • Patent number: 8351757
    Abstract: Even when a communication state between a tuner device and a display device is deteriorated, a television broadcast receiving device enables a user to view broadcast. The television broadcast receiving device of the present invention has a tuner section that receives a digital broadcast signal, selects the digital broadcast signal to decode the digital broadcast signal, generates video data including a video signal and an audio signal, and converts the video data into processed video data suitable for wireless communication, and a display section that receives the processed video data from the tuner section through wireless communication, and displays a video based on the processed video data. The tuner section has a recording/playback section that records and reads the video data in and from a predetermined recording section according to a change in state of the communication with the display section.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: January 8, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kenji Tsunashima, Hideki Kawano, Tetsuro Shida
  • Publication number: 20110267476
    Abstract: In a communication system in which a transmitting device transmits a video signal to a receiving device, one or both of these devices includes a beacon analyzer that analyzes beacon signals transmitted by other wireless systems operating in the same frequency band and predicts periods during which beacon transmission is expected. During these predicted periods, video transmission is suspended and the video signal is stored in a buffer in the transmitting device. At the end of each predicted period, the stored video signal is read from the buffer and transmitted without horizontal and vertical blanking periods until the buffering delay is made up. The receiving device displays the received video signal with standard video timing. A normal unbroken video picture is thereby obtained despite beacon interference.
    Type: Application
    Filed: April 27, 2011
    Publication date: November 3, 2011
    Inventors: Midori SAKAGUCHI, Hideaki Kosaka, Tetsuro Shida
  • Publication number: 20110134895
    Abstract: The transmission terminal in a wireless communication system includes: a communication unit for intermittently transmitting a radio signal; a transmission-side beacon reception unit; a beacon analysis unit for analyzing the received beacon signal; and a transmission output level change unit for estimating an emission time period of a beacon signal to be received by the transmission-side beacon reception unit on the basis of the beacon period information and the beacon reception time information, thereby obtaining an estimated emission time period; wherein the transmission output level change unit instructs the transmission-side communication unit to transmit the radio signal having a raised transmission output level during at least the estimated emission time period, the raised transmission output level being higher than a transmission output level during a time period other than at least the estimated emission time period.
    Type: Application
    Filed: July 2, 2010
    Publication date: June 9, 2011
    Inventors: Midori SAKAGUCHI, Hideaki Kosaka, Tetsuro Shida, Toshimitsu Sato
  • Patent number: 7756233
    Abstract: A receiving device (50) is provided to allow appropriate clock regeneration even for a VBR TS when a stream including video and audio data, such as an MPEG2 TS, is transmitted or received in real time through a network having jitter. When the received packet data is stored in a memory (53) and the packet data is output in accordance with time information added to the received packet data, a clock frequency deviation between a sending device and a receiving device is calculated on the basis of the integration result of the amount of the received packets temporarily stored in the memory (53), the number of the received packets which have been processed, and the measurement result of the integration time used for integrating the amount of the received packets. A read timing offset of the received packet is obtained on the basis of the calculation result of the clock frequency deviation.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: July 13, 2010
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Sadayuki Inoue, Toshimitsu Sato, Tsuyoshi Kasaura, Tetsuro Shida, Takashi Fujiwara, Soichiro Matsumoto, Masahiro Tsujishita
  • Publication number: 20100129047
    Abstract: Even when a communication state between a tuner device and a display device is deteriorated, a television broadcast receiving device enables a user to view broadcast. The television broadcast receiving device of the present invention has a tuner section that receives a digital broadcast signal, selects the digital broadcast signal to decode the digital broadcast signal, generates video data including a video signal and an audio signal, and converts the video data into processed video data suitable for wireless communication, and a display section that receives the processed video data from the tuner section through wireless communication, and displays a video based on the processed video data. The tuner section has a recording/playback section that records and reads the video data in and from a predetermined recording section according to a change in state of the communication with the display section.
    Type: Application
    Filed: November 18, 2009
    Publication date: May 27, 2010
    Inventors: Kenji TSUNASHIMA, Hideki Kawano, Tetsuro Shida
  • Patent number: 7584360
    Abstract: A management unit (110) which issues a digital certificate to a new transmission unit (410) includes a wireless communication section for performing communication in a network (300) and a wire communication section to which the new transmission unit (410) can be connected; when the new transmission unit (410) is wire-connected to the management unit (110), it is judged in accordance with the received device type information of the new transmission unit (410), whether or not the new transmission unit (410) is a device having a communication means that can communicate in the network (300); and if the new transmission unit is judged as a device having that type of means, the management unit creates a digital certificate by using a device identifier specific to the new transmission unit (410), and sends the digital certificate to the new transmission unit (410).
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: September 1, 2009
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tsuyoshi Kasaura, Sadayuki Inoue, Soichiro Matsumoto, Tetsuro Shida, Toshimitsu Sato, Masahiro Tsujishita
  • Publication number: 20080247332
    Abstract: A network configuration management includes the steps of sending from the management terminal (1100) participation terminal information stored in the management terminal; receiving by the participation terminal (1200, 1300, 1400) other than the management terminal, participation terminal information sent from the management terminal (1100); judging by the participation terminal other than the management terminal, whether or not the participation terminal can communicate with another participation terminal device that is participating in a wireless network (1010); sending a communication availability judgment result which is obtained by the judging step, from the participation terminal other than the management terminal to the management terminal (1100); and determining by the management terminal (1100), a participation terminal that should be excluded from the wireless network (1010) in accordance with the communication availability judgment result, and deleting by the management terminal device, from the par
    Type: Application
    Filed: December 14, 2004
    Publication date: October 9, 2008
    Inventors: Toshimitsu Sato, Sadayuki Inoue, Tetsuro Shida, Tsuyoshi Kasaura, Soichiro Matsumoto, Masahiro Tsujishita
  • Patent number: 7433575
    Abstract: An MPEG recording and playback device is provided which can provide pertinent information on a program being played back to viewers at least in certain forms with certainty, thereby facilitating viewers' convenience. In this MPEG recording and playback device, during recording of MPEG data, a program information collecting unit (14) collects pertinent information on program responsive to an input path of the MPEG data by changing a method of collection, and the pertinent information on program is recorded in a different location of a track from that for the MPEG data. During playback, recorded pertinent information on program is outputted after being superimposed on an MPEG decoded analog image signal.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: October 7, 2008
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hideaki Kosaka, Tetsuro Shida
  • Patent number: 7269340
    Abstract: An MPEG data recorder comprises an interface means for receiving a data packet from a digital transmission line transmitting MPEG data in real time, and extracting a predetermined MPEG data from a received packet to output it as a data signal; a data rate detector means for determining a data rate of MPEG data based on a valid data period, during which the data signal is outputted from the interface means; and a recording mode selector means for selecting a recording mode based on the determined data rate. According to such a configuration, the data rate of MPEG data can be detected without a necessity of analyzing the MPEG data, which would require an MPEG system layer decoder, and thereby an MPEG data recorder can be obtained, in which MPEG data are recorded efficiently in a proper recording mode, with a simplified circuit configuration.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: September 11, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tetsuro Shida, Kenji Tsunashima, Hideaki Kosaka
  • Publication number: 20070162741
    Abstract: A management unit (110) which issues a digital certificate to a new transmission unit (410) includes a wireless communication section for performing communication in a network (300) and a wire communication section to which the new transmission unit (410) can be connected; when the new transmission unit (410) is wire-connected to the management unit (110), it is judged in accordance with the received device type information of the new transmission unit (410), whether or not the new transmission unit (410) is a device having a communication means that can communicate in the network (300); and if the new transmission unit is judged as a device having that type of means, the management unit creates a digital certificate by using a device identifier specific to the new transmission unit (410), and sends the digital certificate to the new transmission unit (410).
    Type: Application
    Filed: November 5, 2004
    Publication date: July 12, 2007
    Inventors: Tsuyoshi Kasaura, Sadayuki Inoue, Soichiro Matsumoto, Tetsuro Shida, Toshimitsu Sato, Masahiro Tsujishita
  • Publication number: 20070140398
    Abstract: A receiving device (50) is provided to allow appropriate clock regeneration even for a VBR TS when a stream including video and audio data, such as an MPEG2 TS, is transmitted or received in real time through a network having jitter. When the received packet data is stored in a memory (53) and the packet data is output in accordance with time information added to the received packet data, a clock frequency deviation between a sending device and a receiving device is calculated on the basis of the integration result of the amount of the received packets temporarily stored in the memory (53), the number of the received packets which have been processed, and the measurement result of the integration time used for integrating the amount of the received packets. A read timing offset of the received packet is obtained on the basis of the calculation result of the clock frequency deviation.
    Type: Application
    Filed: February 2, 2005
    Publication date: June 21, 2007
    Inventors: Sadayuki Inoue, Toshimitsu Sato, Tsuyoshi Kasaura, Tetsuro Shida, Takashi Fujiwara, Soichiro Matsumoto, Masahiro Tsujishita
  • Patent number: 7227953
    Abstract: A copy-protected-state indicating MPEG-TS data output unit (3) holds a bit stream obtained by previously compressing and encoding image and/or audio data representing that recording desired by the user has ended in failure because the contents is copy-protected. When copy control information (V2) outputted from an IEEE 1394 interface (1) indicates a copy-protected state, a selecting unit (20) selects copy-protected-state indicating MPEG-TS data (V3) outputted from the copy-protected-state indicating MPEG-TS data output unit (3) and outputs it as to-be-recorded MPEG-TS data (V4). Thereby, the data (V3) is recorded.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: June 5, 2007
    Assignee: Mitsubishi Denki K.K.
    Inventor: Tetsuro Shida
  • Patent number: 6859612
    Abstract: A slow decode control part divides a reference clock generated by a VCXO at a ratio of a slow speed to a normal speed. An STC circuit counts the divided clock. A time for starting decoding by an MPEG video decode part is decided by comparing a DTS included in MPEG data with the count of the STC circuit. A display time determination part determines a timing for outputting decoded data by comparing a PTS included in the MPEG data with the count of the STC circuit. Decoded data temporarily held in a frame buffer is output in response to a signal generated in a determination part on the basis of frame frequency information included in the MPEG data. Thus, slow reproduction is implemented with a high degree of freedom not limited to an integer-fractional speed without requiring a complicated circuit structure.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: February 22, 2005
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tetsuro Shida, Hideaki Kosaka
  • Publication number: 20040175110
    Abstract: A method for recording signals on a magnetic tape including receiving an input signal, extracting a program-linked signal from the input signal, modulating the program-linked signal so as to have a frequency different from any frequency within a predetermined possible range of a control signal, recording the input signal on a recording track, and recording the control signal and the modulated program-linked signal on the control track. A method for reproducing signals recorded on the magnetic tape including reading a compound signal including the control signal and the modulated program-linked signal from the control track, separating the modulated program-linked signal from the CTL signal, and outputting a video signal based on the separated modulated program-linked signal.
    Type: Application
    Filed: November 4, 2002
    Publication date: September 9, 2004
    Inventors: Hideaki Kosaka, Tetsuro Shida
  • Publication number: 20030118317
    Abstract: An MPEG recording and playback device is provided which can provide pertinent information on a program being played back to viewers at least in certain forms with certainty, thereby facilitating viewers' convenience. In this MPEG recording and playback device, during recording of MPEG data, a program information collecting unit (14) collects pertinent information on program responsive to an input path of the MPEG data by changing a method of collection, and the pertinent information on program is recorded in a different location of a track from that for the MPEG data. During playback, recorded pertinent information on program is outputted after being superimposed on an MPEG decoded analog image signal.
    Type: Application
    Filed: June 5, 2002
    Publication date: June 26, 2003
    Inventors: Hideaki Kosaka, Tetsuro Shida
  • Publication number: 20030118180
    Abstract: A copy-protected-state indicating MPEG-TS data output unit (3) holds a bit stream obtained by previously compressing and encoding image and/or audio data representing that recording desired by the user has ended in failure because the contents is copy-protected. When copy control information (V2) outputted from an IEEE 1394 interface (1) indicates a copy-protected state, a selecting unit (20) selects copy-protected-state indicating MPEG-TS data (V3) outputted from the copy-protected-state indicating MPEG-TS data output unit (3) and outputs it as to-be-recorded MPEG-TS data (V4). Thereby, the data (V3) is recorded.
    Type: Application
    Filed: May 10, 2002
    Publication date: June 26, 2003
    Inventor: Tetsuro Shida
  • Publication number: 20020067915
    Abstract: An MPEG data recorder comprises an interface means for receiving a data packet from a digital transmission line transmitting MPEG data in real time, and extracting a predetermined MPEG data from a received packet to output it as a data signal; a data rate detector means for determining a data rate of MPEG data based on a valid data period, during which the data signal is outputted from the interface means; and a recording mode selector means for selecting a recording mode based on the determined data rate.
    Type: Application
    Filed: November 16, 2001
    Publication date: June 6, 2002
    Inventors: Tetsuro Shida, Kenji Tsunashima, Hideaki Kosaka