Sony Corporation

Sony Disc & Digital Solutions Inc.

Sony Disc & Digital Solution Inc.

Etsuo Shibasaki

Yoichiro Sako

Shunsuke Furukawa

Kaoru Kijima

Akiya Saito

Akiko Inoue

Yoriaki Kanada

Koichi Nakajima

Jun Nakano

Tetsuhiro Sakamoto

Hideo Kawachi

Takayuki Asahina

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

An information signal area on an information signal recording surface is provided as pits on a mirror in accordance with modulated information data, and is covered with a metal alloy reflective film. Sections that do not include pits corresponding to the information data are provided in the information signal area, and portions of the metal alloy reflective film on the sections are formed as perforated marks corresponding to the information data. In this case, the reproduction signal amplification level of a prepit signal and the reproduction signal amplitude level of a perforated mark signal can be obtained as substantially equal values by adjusting the depth and width of pits and/or adjusting the width and length of perforated marks. Hence, waveform distortion due to a waveform equalization circuit and variations in binary signals due to displacement of the slice level are reduced so that signals can be stably and reliably detected with the same reading apparatus.

Method for manufacturing read-only optical disc medium and read-only optical disc medium

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.

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Tokyo, Japan

Etsuo Shibasaki