Sony Corporation

Sony Disc & Digital Solutions Inc.

Ube Industries, Inc.

Sony Disc & Digital Solution Inc.

Koichi Nakajima

Yoriaki Kanada

Yoichiro Sako

Shunsuke Furukawa

Kaoru Kijima

Akiya Saito

Akiko Inoue

Etsuo Shibasaki

Hidetomo Ashitaka

Haruo Ueno

Toru Aida

Fumiaki Henmi

Akie Sugiyama

Unique identification information is prerecorded on a disc. The identification information is registered to a server along with user's license when he or she buys the disc. When an terminal unit reproduces data from the disc, identification information is read and transmitted to the server through the Internet. The server creates a key that controls to reproduce data from the disc in accordance with the license identified by the identification information and transmits the key to the terminal unit along with the user's license information for the disc. The terminal unit controls to reproduce contents of the disc in accordance with key and license information transmitted from the server. The license for each disc is managed in accordance with the identification information. Thus, different services can be provided for individual discs.

Information service method, information service unit, recording or reproducing controlling method, and recording and/or reproducing unit

A recording medium including at least a lead-in region, a recording region in which information is recorded, and a lead-out region. In this configuration, medium information including medium identification information and relevant information is recorded in at least any one of the lead-in region, the recording region, and the lead-out region.

Recording medium, recording method, information transmission method, terminal device, and server device

A recording medium is applicable to information service system for receiving and transmitting information when a terminal device on the user's side accesses an administrative server, which is a server device, using a communication line such as the Internet. This recording medium () comprises a lead-in region (), a data recording region () positioned on an outer region than the lead-in region, and a lead-out region () positioned on an outer region than the data-recording region. In at least any one of these regions (), (), and (), multiple pieces of identification information are recorded.

Recording medium, recording method, recording device, reproduction device, data transmission method, and server device

Recording medium, recording method, recording apparatus, reproduction apparatus, data transmission method, and server device

First, an ID added disc is loaded. A disc ID is read from the disc at step S. The disc ID matches a hardware ID of hardware that can use software recorded on the disc. If the disc ID has not been read from the disc, an error process is performed. At step S, a hardware ID of hardware connected to a personal computer is obtained. At step S, it is determined whether or not both the IDs match. When the determined result represents that they match, at step S, an application starts. When the determined result at step Srepresents that they do not match, at step S, an error message is displayed on a display of the personal computer.

Data recording medium, program starting method, and program

On a CD-R, a UID that is unique identification information is pre-recorded. When the CD-R is loaded into an information terminal unit, the UID is read and transmitted to a management server through the Internet. The management server determines whether predetermined data can be recorded onto the CD-R in accordance with the received UID. For example, when the UID is valid, contents data is downloaded from the management server to the information terminal unit and recorded onto the CD-R. In addition, for example, when the UID is valid, a notification that represents that contents data is permitted to be copied or moved is transmitted from the management server to the information terminal unit. As a result, contents data recorded on another recording medium can be copied or moved to the CD-R.

Data recording medium, data recording method, data processing device, data distribution method, data distribution device, data transmission method, data transmission device, data distribution system, and data communication system

A recording medium including at least a lead-in region, a recording region in which information is recorded, and a lead-out region. In this configuration, medium identification information that includes user identification information accessible by the user is recorded in at least any one of the lead-in region, the recording region, and the lead-out region.

Recording medium, information transmission method, terminal, server, and recording method

A processing method is disclosed. When a recording medium on which at least one program has been recorded is loaded, a program for a user registration is started. Identification information unique to the recording medium is read therefrom. The identification information that has been read and user's information that has been obtained are correlatively stored. After they have been stored, the program data is read from the recording medium.

Registration method and program

An additional information read/write system has an ID/additional information distributing apparatus, an ID postscribing apparatus, and a drive system. The ID/additional information distributing apparatus includes a managing unit for managing IDs postscribed to optical discs and additional information for updating content read from each of the optical discs and a distributing unit for distributing the IDs and the additional information corresponding to the IDs. The ID postscribing apparatus includes a transmitting and receiving unit and a writing unit. The drive system includes a transmitting and receiving unit for transmitting the IDs to the ID/additional information distributing apparatus and receiving the additional information, a writing unit for writing the additional information on a storage medium, and a playback unit for playing back the content updated based on the additional information from the storage medium.

ADDITIONAL INFORMATION READ/WRITE SYSTEM, ADDITIONAL INFORMATION READ/WRITE METHOD, ADDITIONAL INFORMATION READ/WRITE PROGRAM, COMPUTER-READABLE PROGRAM STORAGE MEDIUM STORING ADDITIONAL INFORMATION READ/WRITE PROGRAM, AND ID/ADDITIONAL INFORMATION DISTRIBUTING APPARATUS.

A cutting apparatus is provided, in which a recording laser beam from a laser light source is ON/OFF-modulated by an optical modulating device on the basis of a square output signal in which a video FM wave signal is pulse width modulated by an audio FM wave signal thereby to form exposure pits on a master disc. This cutting apparatus includes a photodetector for receiving one portion of the recording laser beam irradiated on the master disc from the laser light source or a photodetector for receiving a reflected light of the recording laser beam irradiated on the master disc from the laser light source and which is reflected on the master disc. A detected output signal from the photodetector is supplied through a low-pass filter to a control circuit which controls an intensity of an output laser beam from the laser light source, and an offset of a source system line is adjusted so that a secondary higher harmonic component of a main carrier in the detected output from the photodetector is minimized.

Cutting apparatus for an optical disc

Polybutadiene consisting of from 5% to 30% by weight of a boiling n-hexane-insoluble fraction and from 70% to 95% by weight of a boiling n-hexane-soluble fraction and having enhanced mechanical strength is prepared by polymerizing 1,3-butadiene in a polymerization solvent in the presence of a specific catalyst consisting essentially of (A) a cobalt compound catalytic component soluble in the polymerization solvent; (B) an organic aluminum halide catalytic component; (C) a trialkyl aluminum-water reaction product in catalytic component, and (D) a catalytic component consisting of carbon disulfide and/or phenyl isothiocyanate, and by isolating the resultant polybutadiene from the reaction mixture.

Method for producing polybutadiene having an enhanced mechanical strength

A 1,2-polymerization of 1,3-butadiene is carried out in a polymerization solvent in the presence of a 1,2-polymerization catalyst consisting essentially of a cobalt compound soluble in the polymerization solvent, an organic aluminum halide, an organic magnesium compound, and carbon disulfide and/or phenyl isothiocyanate and in the presence or absence of a cis-1,4-polymerization product of 1,3-butadiene.

Growing community of inventors

Chiba, Japan

Koichi Nakajima