Patents Assigned to NEC DISPLAY SOLUTIONS
  • Patent number: 8305344
    Abstract: A projector for enlarging and projecting the display image on a light valve onto a screen is provided with: an infrared photodetector for photodetecting infrared light that is emitted by an electronic pen that is manipulated on the screen and that is provided with an infrared light emission device and ultrasonic generator; at least two ultrasonic receivers for detecting ultrasonic waves that are emitted by the electronic pen; means for measuring the distance to a screen; and means for supplying coordinate data in which the position of the electronic pen on the screen, which has been calculated based on output of the infrared photodetector, output of the ultrasonic generator, and output of the means for measuring the distance to the screen, has been normalized by the length of a side of a projected rectangular image that has been enlarged and projected.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: November 6, 2012
    Assignee: NEC Display Solutions of America, Inc.
    Inventor: Youichi Tamura
  • Patent number: 8286259
    Abstract: The present invention aims to provide a network projector which has a simple security function via a network. The network projector comprises a power source unit which supplies power to the network projector and a display signal control unit which, when confirming that a connection confirmation signal which is transmitted at a fixed period from a host computer via a network is not inputted for more than a predetermined time, outputs a supply stop signal to the power source unit indicating that the supply of power should be stopped.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: October 9, 2012
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Shuji Murayama, Masaki Kitagawa
  • Patent number: 8284548
    Abstract: A frame casing according to the present invention is provided on side surfaces of a display section, and includes: a plurality of divided frames which are L-shaped and disposed along the side surfaces of the display section with adjacent ends thereof along a circumferential direction overlapping one another; and a attaching section which is formed in a middle of a circumferential direction of each of the plurality of divided frames and which attaches the plurality of divided frames to the side surfaces of the display section, total length of the divided frames along the circumferential direction being greater than total length of the side surfaces of the display section along the circumferential direction.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: October 9, 2012
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Yoshihiro Takechi
  • Patent number: 8279352
    Abstract: In a video display device of the present invention, a main control unit is equipped with a user interface for varying correction values set to a range correction unit and controls a range correction unit by acquiring the corresponding correction values from a storage unit in accordance with correction level information input by the user interface. The storage unit stores range correction values for the video display unit in correspondence with each piece of the correction level information input by the user interface. Thus, it is possible to correct luminance ranges to suit the user's preference without causing a large luminance reduction.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: October 2, 2012
    Assignees: NEC Display Solutions, Ltd., Mitsubishi Electric Control Software Corporation
    Inventors: Masatoshi Abe, Yutaka Arai, Hiroki Iwataka
  • Patent number: 8277051
    Abstract: An apparatus includes a lamp a power supply for supplying power to lamp, an image processing unit for displaying an image according to any one of a plurality of video signals applied externally, and a control unit for causing the power supply to start supplying power to the lamp when at least one of the plurality of video signals is applied in an initial state, checking whether or not any one of the plurality of video signals is applied within a predetermined period of time from the time when the applied video signal is stopped, making the power supply continue to supply power to the lamp if at least one of the plurality of video signals is applied, and making the power supply stop supplying power to the lamp if any one of the plurality of video signals has not been applied.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: October 2, 2012
    Assignee: Nec Display Solutions, Ltd.
    Inventors: Daisuke Moriwaki, Koichi Ara, Michio Tomizawa
  • Patent number: 8231252
    Abstract: A projector includes a light source, a pump which supplies a compressed gas to cool the light source, and an ejector member having a hole, in which, a tube connects the pump to the ejector member, the compressed gas is discharged from the hole, and a diameter of the hole is in a range from 0.2 mm to 0.4 mm.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: July 31, 2012
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Yoshifumi Nishimura, Hiroaki Takamatsu
  • Publication number: 20120176578
    Abstract: A cooling apparatus for a liquid crystal image display having a liquid crystal unit includes an incident-side polarizing plate, a liquid crystal panel and an exit-side polarizing plate. The incident-side polarizing plate, the liquid crystal panel and the exit-side polarizing plate are disposed side by side with a gap therebetween to have the same in-plane direction. A first cooling unit feeds an air stream in an orientation of the in-plane direction, and a second air cooling unit feeds an air stream in the in-plane direction in a different orientation from the air stream by the first air cooling unit. The first air cooling unit and the second air cooling unit are set such that the first and second air stream collide with each other between the incident-side polarizing plate and the liquid crystal panel and/or between the liquid crystal panel and the exit-side polarizing plate.
    Type: Application
    Filed: March 22, 2012
    Publication date: July 12, 2012
    Applicant: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Motoyasu UTSUNOMIYA
  • Patent number: 8182095
    Abstract: A silent cooling apparatus for effectively reducing the operating temperature of an electronic device includes a plurality of components which include surfaces opposite to each other with a spacing therebetween and have a heat generating spot on at least any of the surfaces opposite to each other, in a small and low-cost configuration. The apparatus for cooling a heat generating spot of an electronic device includes a cooling apparatus for forcedly air-cooling a heat generating spot of an electronic device which includes a plurality of components which are disposed side by side to have the same in-plane direction, and include heat generating spots within their surfaces. The cooling apparatus includes a first air cooling unit for feeding an air stream to the heat generating spot in an orientation of the in-plane direction, and a second air cooling unit for feeding an air stream to the heat generating spot in the in-plane direction in a different orientation from the air stream by the first air cooling unit.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: May 22, 2012
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Motoyasu Utsunomiya
  • Patent number: 8174516
    Abstract: An object of the present invention is to realize a transmission distortion correction system for allowing an image signal including a plurality of picture signals to be corrected, and to realize an image signal transmitter and an image display unit.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: May 8, 2012
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Reiichi Kobayashi
  • Publication number: 20120069057
    Abstract: A liquid crystal display device having a liquid crystal panel includes a common voltage generating section (5) that supplies a common voltage to a common electrode connected in common to a plurality of liquid crystal cells that comprise said liquid crystal panel (13); a liquid crystal driving section (12) that supplies a voltage corresponding to an input image signal to said plurality of liquid crystal cells so as to display an image based on said input image signal on said liquid crystal panel (13); and a controlling section (10) that causes said common voltage generating section (15) to change a value of the common voltage generated thereby to correspond to a signal that represents an amount of light that enters said liquid crystal panel.
    Type: Application
    Filed: March 30, 2009
    Publication date: March 22, 2012
    Applicant: NEC Display Solutions, Ltd.
    Inventor: Hiroaki Ikeda
  • Patent number: D656532
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: March 27, 2012
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Susumu Ogawa, Takayuki Okamoto, Yuichiro Nara, Mitsuhiro Shimizu
  • Patent number: D659738
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: May 15, 2012
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Takahisa Yamada, Toshiyuki Yamaguchi, Yasushi Itou, Kazuya Inoue, Mitsuhiro Shimizu
  • Patent number: D660340
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: May 22, 2012
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Susumu Ogawa, Yukihiko Oota, Takayuki Okamoto, Junsi Lee, Yuichiro Nara, Mariko Ouchi
  • Patent number: D661333
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: June 5, 2012
    Assignees: NEC Display Solutions, Ltd., Delta Electronics, Inc.
    Inventors: Mikiya Takeda, Candice Cheng
  • Patent number: D661722
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: June 12, 2012
    Assignees: NEC Display Solutions, Ltd., Delta Electronics, Inc.
    Inventors: Mikiya Takeda, Candice Cheng
  • Patent number: D662917
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: July 3, 2012
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Hiroyuki Kasuga, Yoshihito Mochizuki, Hsi-Ming Chen, Naoto Fukasawa
  • Patent number: D663349
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: July 10, 2012
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Mikiya Takeda, Jecky Lai
  • Patent number: D667480
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: September 18, 2012
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Takahisa Yamada, Toshiyuki Yamaguchi, Yasushi Itou, Kazuya Inoue, Mitsuhiro Shimizu
  • Patent number: D667864
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: September 25, 2012
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Takahisa Yamada, Toshiyuki Yamaguchi, Yasushi Itou, Kazuya Inoue, Mitsuhiro Shimizu
  • Patent number: D668284
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: October 2, 2012
    Assignee: NEC Display Solutions. Ltd.
    Inventors: Takahisa Yamada, Toshiyuki Yamaguchi, Yasushi Itou, Kazuya Inoue, Mitsuhiro Shimizu