Sharp Kabushiki Kaisha Corporation

Other

Tdk Corporation

Shigemi Maeda

Toshihisa Deguchi

Kunio Kojima

Yoshihisa Adachi

Shigeo Terashima

Hideharu Tajima

Tetsuya Okumura

Atsushi Etoh

Takeshi Yamaguchi

Yasuhiro Harada

Hiroshi Fuji

Masaki Yamamoto

Yoshiteru Murakami

Go Mori

Hirohisa Yamada

Jun Akiyama

Noriaki Sakamoto

Tomiyuki Numata

Shozou Kobayashi

Kenji Ohta

Tetsuya Hayashi

Toshihiro Yamanaka

Nobuyuki Horie

Kentaro Tsuji

Ikuo Nakano

Tsuneo Fujiwara

Yoshikazu Fujii

Michio Matsuura

Tetuya Inui

Minoru Tobita

Toshiaki Hioki

Yoshiki Nishioka

Hiromi Juso

Teruhisa Kotani

Takashi Iwaki

Shigeki Tsuji

Kentaroh Tsuji

Takashi Arimoto

Takeshi Maeda

Hiroyasu Inoue

Hitoshi Watanabe

Tetsu Watanabe

Yoshihiro Sekimoto

Tomoyuki Miyake

Hirotsugu Matoba

Nobuo Ogata

Satoshi Sumi

Toshihiko Sakai

Masaaki Kurebayashi

Yasuo Nakata

Masaki Aoshima

Yasuhito Tanaka

Hideaki Sato

Nobuhide Matsubayashi

Mitsuo Ishii

Toshio Ishikawa

Toshiharu Inui

Takanobu Sato

Teruki Sugiura

Shozo Kobayashi

Masanori Ushioda

Yoshitoru Murakami

Kazuaki Okumura

Taeshi Yamaguchi

Signal processing apparatus includes: an input interface configured to receive an output signal Vfrom a sensor; a prediction circuit configured to generate, on the basis of a relationship different depending on each of a plurality of converged values V, a plurality of predicted values Vcorresponding to a value of the output signal that would be obtained at a time Tafter a time T, in a transition response period before a response time period Tr elapses where Tr denotes a response time period required for a value of the output signal Vto become a converged value Vcorresponding to a value P of a parameter representing a certain property of an object to be measured, in accordance with a value Vof the output signal obtained at the time T; and an estimation circuit configured to generate, on the basis of the value Vof the output signal obtained at the time Tand the plurality of predicted values V, an estimated value Pe of a parameter representing the certain property of the object to be measured.

Signal processing apparatus and signal processing method

A signal processing device () includes a prediction circuit () configured to generate Vcorresponding to an output signal to be obtained at Tafter T, in accordance with Vobtained at the time T, in a transition response period before Tr or Td elapses, where Tr denotes a time period during which an output signal Vof a sensor () changes from a converged value Vcorresponding to a parameter Prepresenting a certain property of an object to be measured to a converged value Vcorresponding to P, and Td denotes a time period during which Vchanges from Vto V. The prediction circuit generates the predicted value so that TrE&#x3c;Tr, TdE&#x3c;Td, |1&#x2212;Td/Tr|&#x3e;|1 &#x2212;TdE/TrE| are satisfied, where TrE denotes a time period during which the predicted value becomes a value corresponding to V, and TdE denotes a time period during which the predicted value becomes a value corresponding to V

Signal processing device and signal processing method

Where 3D conversion complementary information for 3D conversion of a TV program is pre-recorded on a first information recording area of an optical disc, a content recording area is set to an area on which the TV program relating to the 3D conversion complementary information is recordable. Where the 2D video content is pre-recorded on the first information recording area, download information, etc for recording the 3D conversion complementary information on a 3D conversion complementary information recording space is pre-recorded on a third information recording area so that 2D video content can be reproduced as 3D video. This allows recording and viewing 3D video by easily converting 2D video content, without changing standards and communication formats of generally available 2D video contents and while suppressing an increase in distributed information amount caused by conversion to 3D video.

Information recording medium, reproduction method and recording method using information recording medium, information recording/reproduction device, and 3D conversion unit and information recording device

A display control device () disclosed includes (i) a display/non-display video image determining section () that determines, on the basis of (i) video image information about a video image displayed by a display device () and (ii) viewing mode information indicative of a viewer's desired mode of viewing a video image, whether the video image displayed by the display device () is a display video image or a non-display video image and (ii) a shutter operation control section () that closes a right-eye shutter and a left-eye shutter of a liquid crystal shutter () when a video image determined as a non-display video image, which is unnecessary for the viewing mode and which is thus not to be displayed to the viewer, is displayed by the display device (). The display control device () thus closes the right-eye shutter and the left-eye shutter of the liquid crystal shutter () when a non-display video image is displayed by the display device (). This arrangement allows each viewer to view a video image in a mode suitable for the viewer.

Display control device, display control method, display control program, computer-readable recording medium, recording/playback device equipped with abovementioned display control device, speech output device, and recording/playback device equipped with speech output device

An image watching glasses identification device(oror) is an image watching glasses identification device(oror) for identifying a pair of shutter glassesthrough which to watch an image displayed on a display device, the image watching glasses identification device(oror) including: an identification information obtaining sectionfor obtaining an identification information item for identifying the pair of shutter glassesand; a display control sectionfor causing the display deviceto display an identification result associated with the identification information item obtained by the identification information obtaining section. This makes it possible to provide an image watching glasses identification device that is capable of causing, when a viewer watches through the pair of image watching glassesthe image displayed on the display device, the display deviceto display the identification result. The identification result enables the viewer to identify the pair of image watching glasses worn by the viewer.

Image watching glasses identification device, image watching system, pair of image watching glasses, image watching glasses identification program, computer-readable recording medium, and display device

In an optical information storage medium reproduction apparatus reproducing an optical information storage medium including a plurality of information recording layers each including a recording mark having a length shorter than an optical system resolution limit, reproduction laser power reading an information recording layer closest to a reproduction-laser-incident surface of the optical information storage medium is set to be lower than reproduction laser power reading an information recording layer farthest from the reproduction-laser-incident surface but not lower than minimum reproduction laser power that satisfies a reproduction signal characteristic that the optical information storage medium reproduction apparatus requires.

Optical information storage medium reproduction apparatus and control method of the same

In an optical information storage medium reproduction apparatus for reproducing an optical information storage medium including a plurality of information recording layers each including a recording mark having a length shorter than an optical system resolution limit, reproduction laser power for reading an information recording layer closest to a reproduction-laser-incident surface of the optical information storage medium is set to be lower than reproduction laser power for reading an information recording layer farthest from the reproduction-laser-incident surface but not lower than minimum reproduction laser power that satisfies a reproduction signal characteristic that the optical information storage medium reproduction apparatus requires.

A reproduction method for reproducing a rewritable and readable optical information storage medium in such a manner that an information recording layer is disclosed. The reproduction method comprising: reading setting information of reproduction laser power for each information recording layer of the rewritable and readable optical information storage medium, the setting information being stored in the rewritable and readable optical information storage medium; and setting, based on the setting information thus read, reproduction laser power for the information recording layer that is closest to a reproduction-laser-incident surface to be not less than 1.0 mW but less than 1.1 mW.

Recording mark forming method utilizing a device including a laser and a laser drive carried by a pickup having a movement drive wherein a control controls the drives to irradiate a recording medium with laser pulse sequences to form recording marks having recording mark lengths between a predetermined and maximum lengths, a top section, a last section including a cooling period, and an intermediate period. Heat of mark front edges is controlled by top section recording parameters classified according to recording mark lengths and recording parameters of first through maximum recording mark lengths are classified into a same group. Heat of mark rear edges is controlled by cooling start positions for cooling periods classified according to recording mark lengths. Cooling start positions for a second predetermined mark length through the maximum mark length are classified into a same group. The second mark length is longer than the first mark length.

Reproduced signal quality judging method

This invention allows super-resolution reproduction with which a better bER value is attainable, when information is recorded by a random pattern including a mark length not longer than a resolution limit, by use of a highly versatile signal decoding method. Information is recorded as marks and spaces coded by RLL(1,7) modulation, which each of the marks and spaces have one of a plurality of lengths, and 2T marks and 2T spaces of the marks and spaces being formed are shorter than 0.12 &#x3bc;m. An information recording layer () includes a reproduction film () and a reflective film () which are provided in this order from a side from which reproducing light is incident, which reproduction film is made of (i) zinc oxide, (ii) strontium titanate, (iii) titanium oxide, (iv) cerium oxide, or (v) a material including at least one of the (i) through (iv), and which reflective film is made of tantalum or titanium.

Optical information recording medium and optical information processing apparatus

A magnetic recording/reproducing apparatusincludes: a magnetic head; a magnetic recording medium; a spindleand a spindle motor; a suspension arm; a voice coil motor; and a control unit. The control unithas: a motor driver; a head amplifier; a read/write channel; a laser driver; and a controller. The controllerhas: a preliminary recording unit; a judgment unit; an extraction unit; a drive condition determining unit; and a preliminary recording terminating unit. Based on a reproduction signal evaluation value obtained using these units and a predetermined reference value, a drive condition is determined which is suitable for recording onto the magnetic recording medium

Magnetic recording/reproducing apparatus and method for determining magnetic recording condition

A recording parameter setting device setting parameters of pulse sequences forming recording marks on recording media. The device includes a storage section storing first and second look-up tables, and a recording parameter setting section for obtaining from the tables and setting parameters corresponding to recording information. The pulse sequences form at least marks equal to or longer than a first predetermined length but not longer than a maximum mark length, and include top and last sections. Also, the first lookup table stores parameters for top sections that control heat of front edges of marks classified into a same group. The second lookup table stores parameters for last sections for controlling heat of rear edges that are equal to or longer than a second predetermined recording mark length, that is longer than the first predetermined recording mark length, through the maximum recording mark length and classified into a same group.

Information reproducing device

In an optical information storage medium reproduction apparatus () for reproducing an optical information storage medium including a plurality of information recording layers each including a recording mark having a length shorter than an optical system resolution limit, reproduction laser power for reading an information recording layer closest to a reproduction-laser-incident surface of the optical information storage medium is set to be lower than reproduction laser power for reading an information recording layer farthest from the reproduction-laser-incident surface but not lower than minimum reproduction laser power that satisfies a reproduction signal characteristic that the optical information storage medium reproduction apparatus () requires. With the arrangement, it is possible to prevent that the information recording layer closest to the reproduction-laser-incident surface is irradiated wrongly with reproduction laser having high reproduction laser power, thereby making it possible to obtain successful reproduction quality. That is, it is possible to realize the optical information storage medium reproduction apparatus () that can set optimum reproduction laser power and perform stable super resolution reproduction.

Growing community of inventors

Yamatokoriyama, Japan

Shigemi Maeda