Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Sony Corporation

Microsoft Technology Licensing, LLC

Koninklijke Philips Corporation N.v.

Matushita Electric Industrial Co., Ltd.

Koninklijke Philips Electronics N.v.

Koninklijke Philips Electronic N.v.

Yoshiho Gotoh

Mitsuaki Oshima

Kenji Koishi

Shinichi Tanaka

Yoshihisa Fukushima

Mitsuro Moriya

Hiroshi Ueda

Kaoru Murase

Mitsurou Moriya

Yoshinari Takemura

Motoshi Ito

Miyuki Sasaki

Tatsushi Bannai

Tomoyuki Okada

Hiroshi Kato

Tokuo Nakatani

Yasushi Tamakoshi

Sarosh Cyrus Havewala

Ravinder S Thind

Vishal Vikram Ghotge

Garret Buban

Rajeev Y Nagar

Masayuki Kozuka

Motoki Kato

Wilhelmus Jacobus Van Gestel

Masafumi Shimotashiro

Masanobu Nakamura

Shin-ichi Tanaka

Norio Miyatake

Hiroshi Okamoto

Motoyoshi Murakami

Shinichi Konishi

Shinji Sasaki

Souichirou Fujioka

Osamu Yamaguchi

Masafumi Nishida

Manabu Inoue

Masaki Hirose

Shinji Inoue

Takuji Maeda

Masahiro Nakanishi

Hisao Tanaka

Takashi Kishimoto

Katsuo Saigo

Kazuhiro Mihara

Takanori Okada

Shuichi Yoshida

Hiroshi Miyai

Tetsushi Kasahara

Tomoaki Izumi

Kazuaki Tamura

Takayoshi Kawamura

Shiro Iwasaki

Hideaki Mita

Kiminori Matsuno

Seiji Nakazawa

Shoichi Tsujita

Hitoshi Kawamukai

Jun Ohara

Koichi Horiuchi

Tadashi Nakamura

Masataka Minami

Takashi Furukawa

Takuya Nishimura

Makoto Ochi

Hideki Ando

Steven Broeils Luitjens

Toshiyuki Fukushima

Motohiro Terao

Hirofumi Murakami

Kazuoki Otani

Souichiro Fujioka

Hiroshi Saitou

Keiichi Teranishi

Tetsuhiro Kohada

Tatushi Bannai

Akito Harada

Osamu Kawashima

Motoki Sony Corporation Kato

Masanobu Sony Corporation Nakamura

Mitsauki Oshima

Shin-Ichi Tanaka

An image system includes: a display device configured to display an image; and an eyeglasses device for viewing the image displayed by the display device, wherein the display device includes: a display portion configured to display in time series the image to be viewed through the eyeglasses device; a signal generation portion configured to generate a synchronization signal for synchronizing timing of switching of frames of the image; and a transmission portion configured to transmit the synchronization signal, the eyeglasses device includes: an optical filter portion configured to adjust an amount of light of the image; a reception portion configured to receive the synchronization signal transmitted from the transmission portion; and a control portion configured to control action of the optical filter portion corresponding to the switching of the frames of the image, based on the synchronization signal, the signal generation portion further generates a parameter signal including action information for defining an action of the optical filter portion, the transmission portion transmits the parameter signal to the reception portion, and the control portion controls the action of the optical filter portion according to the action information of the parameter signal for defining the action of the optical filter portion.

Image system, display device and eyeglasses device used in the same

Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.

Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk

To improve the convenience of a record medium and allow a reproduction process to be more easily performed than before. When a reproduction processthat reproduces material data recorded on a discis executed, a disc information file management sectionreferences a reproduction history of a disc information file held in a disc information file hold sectionand starts reproducing material data from a position according to the reproduction history. When the reproduction process is completed, the disc information file management sectionupdates the reproduction history of the disc information file held in the disc information file hold section. A disc information file record control sectionrecords the updated disc information file on the disc

Information processing apparatus and method, program, and record medium

An image system comprises an image display device which displays images, and image viewing eyeglasses used for viewing images displayed by the image display device. The image display device comprises an image display device configured to display image; and image viewing eyeglasses used for viewing the image displayed by the image display device, wherein the image display device includes: a display portion configured to display the image in time series to be viewed using the image viewing eyeglasses; a synchronization signal generator configured to generate a synchronization signal in synchronization with frame of the image, the synchronization signal including prescribed bit series to transmit bit data described by the presence or absence of a pulse; and a synchronization signal transmitter configured to transmit the synchronization signal, and the image viewing eyeglasses include: an optical filter portion configured to adjust an amount of light transmitted to a left eye and a right eye of a viewer; a synchronization signal receiver configured to receive the synchronization signal transmitted from the synchronization signal transmitter; a synchronization signal analyzer configured to detect the bit series, analyze a pattern of the bit series during a predetermined detection time when the synchronization signal analyzer detects the first pulse received by the synchronization signal receiver, and generate control data to control the optical filter portion; and an optical filter controller configured to control the optical filter portion with the control data.

Image system, image display device and image viewing eyeglasses with them

In an information recording medium for recording and reproducing data thereon on a sector-by-sector basis, the recorded data being managed as at least one file by using a file structure, the file structure includes unused space management information for identifying a used region and an unused region. At least one defective region is registered as an unused region in the unused space management information, the at least one defective region being a region on the information recording medium which is incapable of proper reproduction of the recorded data.

Recording method and reproduction method suitable for recording/reproduction of AV data, and recording drive and reproduction drive, information recording system and information reproduction system, and information recording medium for such methods

A card information-storing portion is provided in a semiconductor memory card, and information relating to access performance such as access condition and access rate is held in the storing portion. Further, an access device acquires the held information from the semiconductor memory card to make it possible that the information can be used for control of a file system. This optimizes processing of the access device and the semiconductor memory card independent of differences in characteristics of semiconductor memory cards and management methods used, realizing high-rate access from the access device to a semiconductor memory card.

Semiconductor memory card, access device and method

An object of the present invention is to provide a marking forming apparatus, a method of forming a laser marking on an optical disk, a reproduction apparatus, an optical disk, and a method of manufacturing an optical disk, capable of providing a greatly improved copy prevention capability as compared to prior known construction. To achieve this object, in the optical disk of the invention, for example, a marking is formed by a laser on a reflective film of a disk holding data written thereon and at least position information of the marking or information concerning the position information is written on the disk in an encrypted form or with a digital signature appended thereto.

Optical disk including a barcode pattern formed by a laser using pulse width modulation

A file system which is enabled to use a Metadata Partition instead of VAT for write-once discs, is provided by a pseudo-overwrite method. On applying this invention to a drive apparatus which supports pseudo-overwrite media, the file system distinguishes data to overwrite from data to append. When the data is newly written to a logical sector, the drive apparatus writes the data to a physical sector to which the logical sector corresponds. When the logical sector is overwritten the data is written to another unrecorded physical sector in the volume space, and remapping information that specifies the original address, and the remapping address are stored in the remapping table.

Pseudo-overwriting data on write-once discs

A file system is enabled to use a Metadata Partition instead of VAT for write-once discs, and is provided by a pseudo-overwrite method with a plurality of tracks especially for metadata and file data. On applying this invention to a drive apparatus that supports pseudo-overwrite media, the file system distinguishes data to overwrite from data to append (S). When the data is newly written to a logical sector, the drive apparatus writes the data to a physical sector to which the logical sector corresponds (S). When the data being overwritten is data stored in the logical sector, the data is written to the other unrecorded physical sector in the volume space (S), and remapping information is written (S). The remapping information specifies the original address of the physical sector, and the remapping address of the physical sector in which the data is written.

Data recording/reproduction for write-once discs

The present invention provides a recording/reproduction device that can perform post-record editing on a disk on which post-record editing has been determined to be impossible by conventional methods, and that can reproduce data that thus has been subjected to post-record editing, by devising a method for access in one cycle of repetitive processes of post-record editing. The recording/reproduction device is provided with a pick-up for recording or reproducing information and a control portion for controlling an operation of the pick-up, in which when reproduction is performed from an information recording medium on which in a separate area from a main sequence in which data blocks including original audio data and video data are recorded in succession, an additional sequence in which data blocks including post-record audio data are recorded in succession is formed, the control portion controls an operation of the pick-up in such a manner that the pick-up accesses the main sequence and the additional sequence alternately, and reproduces a plurality of data blocks in succession in each access.

Recording/reproduction device

The present invention relates to a method for recording an AV file using an information recording disk in which data is recorded/reproduced by sectors. The recording method includes the steps of determining whether or not input data is AV data; detecting a defective sector existing in an assigned data recording area; when the input data is AV data while a defective sector is detected in the data recording area, allocating a defective extent including the defective sector; recording AV data in continuous sectors while skipping the defective extent; and allocating an area of continuous sectors where on the AV data is recorded as one AV extent.

Recording/reproducing method suitable for recording/reproducing AV data on/from disc, recorder and reproducer for the method, information recording disc and information processing system

To smoothly reproduce data. A clip generation sectiongenerates a clip information file that describes attribute information of each piece of essence data that are necessary to reproduce each piece of essence data generated by a data generation sectionaccording to parameter information supplied from an information obtainment section. An index file update sectiongenerates in an index file read from an optical discand stored in a RAM a clip element that describes attribute information of a clip necessary to reproduce the clip according to the parameter information supplied from the information obtainment sectionand updates the index file. The present invention can be applied to a video program creation support system.

Information process apparatus and method, program record medium, and program

A standard reproduction model for ensuring real time reproducing on a disk-shaped information recording medium, includes a pickup () that reads the real time data from the information recording medium, a buffer memory () that temporarily stores the real time data read by the pickup, and a decoding module () that reads the real time data from the buffer memory () and processes the read real time data. An access time Tacc of the standard reproduction model is expressed by the following formula,where dN is a difference in rotational speed of the disk-shaped information recording medium, Trev is a rotation waiting time at a target access position, A and B are constants.

Reproducing method for reproducing real time data from a disk-shaped information recording medium

Growing community of inventors

Osaka, Japan

Yoshiho Gotoh