Hitachi, Ltd.

Canon Kabushiki Kaisha

Other

Sony Corporation

Fuji Xerox Co., Ltd.

Lucent Technologies Inc.

Pioneer Corporation

Hitachi Maxell, Limited

Hiroyuki Kimura

Takao Arai

Toshifumi Takeuchi

Hiroshi Yoshiura

Osamu Kawamae

Yasunori Kobori

Kentaro Hamma

Hiroo Okamoto

Akio Fukushima

Yoshinori Okada

Takaharu Noguchi

Mitsuhiko Watanabe

Masaharu Kobayashi

Toshihiko Gotoh

Isao Echizen

Mitsuru Kudo

Tetsuo Sakae

Hajime Takasugi

Yoshiaki Moriyama

Akira Ogino

Hideo Taka

Mutsunobu Yazaki

Tateo Yamada

Kazumi Sugaya

Takashi Omata

Motoyasu Terao

Hideo Nishijima

Satoshi Yoshida

Mikio Shiraishi

Yasushi Miyauchi

Mikio Koyama

Nobutaka Amada

Takashi Kohashi

Makoto Masunaga

Prakash Sreedhar Murthy

Kuniaki Miura

Shigeru Yamazaki

Naohiro Ozawa

Yasuhiro Fujii

Kousuke Anzai

Shoji Ohno

Vinay Hegde

Kotaro Kawamura

Takaaki Yamada

Hironori Goto

Koichi Tomatsuri

Yasufumi Yunde

Tomoyuki Isonuma

Osamu Numata

Tooru Matsumura

Michihiro Tateishi

Satish Bachina

Vanamamalai Kannan

Katsunori Oki

An authentication method for use in sending/receiving data between a coded data output apparatus for outputting coded data having a water mark, and a recording apparatus for recording data onto a recording medium, the method including: deciding a type of the recording medium used by the recording apparatus; based on a result of the deciding, selecting, from a plurality of authentication methods, an authentication method corresponding to the type of the recording medium, and conducting authentication between the coded data output apparatus and the recording apparatus, using the authentication method; sending/receiving data between the coded data output apparatus and the recording apparatus after conducting the authentication; and in a case where the coded data has the water mark, detecting the water mark by the coded data output apparatus, wherein the data exchanged between the coded data output apparatus and the recording apparatus is scrambled by a scrambling method corresponding to the type the recording medium.

Reproducing apparatus, recording apparatus and display apparatus

A data reproduction method and apparatus includes first circuitry to produce an information signal from a storage medium. The information signal includes copy control information. Detection circuitry is provided to detect the copy control information. Control circuitry is provided to operate the first circuitry to selectively output the information signal based on the detection result of the detection circuitry.

Method and apparatus for data reproduction

There is provided a system for generating configuration data for implementing a circuit design in a segmented reconfigurable device. A placement and routing design aiding system () includes a database () for storing hardware information () including data of PEs included in each segment and data of a first-level and second-level routing matrix and an apparatus () for mapping the circuit design onto the PEs. The mapping apparatus () generates mappings of the circuit design onto the PEs by carrying out an iterative algorithm that minimizes a cost function based on the hardware information (). The cost function includes an item that minimizes usage of the second-level routing matrix () that connects between the segments.

Method and system for mounting circuit design on reconfigurable device

A system effecting a data reproducing method for a plurality of devices, for sending and receiving data by authenticating the plurality of devices with each other, said data reproducing method including: selecting, from a plurality of descrambling methods, a descrambling method corresponding to a type of said data, executing authentication by an authenticating method corresponding to the selected descrambling method, where the authenticating method is selected from a plurality of authenticating methods, and reproducing said data.

A data reproducing method for a plurality of devices, for sending and receiving data by authenticating the plurality of devices with each other, said data reproducing method including: selecting, from a plurality of descrambling methods, a scrambling method corresponding to a type of said data, executing authentication by an authenticating method corresponding to the selected descrambling method, where the authenticating method is selected from a plurality of authenticating methods, and reproducing said data.

At least one kind of control signal concerning control of contents, added to specific locations inside contents data, is detected as first control information, and at the same time, at least one kind of control information concerning control of contents, embedded inside the contents data by a digital watermark, is detected as second control information. Consistency between the first control information as detected, and the second control information as detected is determined and on the basis of results of the determination, the control of the contents is executed. Thus, it is possible to reduce a possibility of the contents being improperly copied, thereby enabling the control with assurance of still higher safety.

System and method for controlling contents by plurality of pieces of control information

It is an object of the present invention to more strongly protect data to be distributed from being illegally plagiarized, and further, to add an electronic watermark function necessary to protect the copyright to all reproduction means apparatuses. In order to achieve the above-described objects, according to the present invention, data targeted for protection is encrypted, and an encryption key required for decrypting this encrypted data and reproduction control data for protecting the copyright are embedded in encrypted data through the use of the electronic watermark. Thus, when reproducing the data, the electronic watermark is detected, and the encryption key required for decrypting the cryptogram and the reproduction control data for protecting the copyright are restored. Through the use of the restored encryption key, the cryptogram is decrypted. Thus, through the use of the reproduction control data restored, the reproduction of the data targeted for protection is controlled.

Data encryption method, recording medium, data transfer apparatus, and encrypted data decryption method

A reproducing method and apparatus for receiving and reproducing data and outputting the data into an external device. After reproducing the data, a descrambler corresponding to a type of the reproduced data is selected from a plurality of descramblers and the external device is authenticated by a selected authenticator which is included in a plurality of authenticators for authenticating the external device and corresponds to the selected descrambler, and the data is outputted.

The digital signal recording/reproducing apparatus inputs a digital signal having a control flag as to a temporary copy permission, and records the digital signal temporarily into a recording medium in accordance with conditions in the control flag, then reproducing the digital signal temporarily from the recording medium in accordance with the conditions in the control flag. The recording/reproducing of the temporary copy is permitted, depending on the following conditions: The recording medium's type, the re-producing point-in-time, the reproducing time-period, and the reproducing frequency. With this method employed, even in a program permitting no recording, the temporary recording/reproducing is permitted under a condition of being limited to the time-shift recording on the receiving side.

Method and apparatus for temporarily giving copy permission for reproducing digital signals

A data recording/reproduction apparatus and method are disclosed, in which a recording medium for digitally recording and reproducing a copyrighted signal is prevented from being illegally duplicated and controlled by a duplication control method conforming with the signal input and the internal functions of the apparatus. An image signal is compressed, the compressed data is converted by a first converter into a format adapted for recording in a recording medium, and the data is recorded by a recording unit in the recording medium. The data recording/reproduction apparatus further comprises a first detection unit for detecting the duplication limiting information embedded in the image signal. Further, the input/output of the image information can be suspended in accordance with the duplication limiting information.

Data recording/reproduction apparatus and method

A digital watermark information detection method for detecting information inserted as a digital watermark from contents has a step of converting the contents into a predetermined specified format and a step of trying to detect information from the converted contents. When a plurality of specified formats are defined in advance and detection of the information from the converted contents fails, the contents is converted into another specified format and the information detection is retried.

Watermark information detection method

In an electronic watermark embedding technique, even when image data compression such as MPEG2 compression is conducted for image data of an image including a watermark while keeping deterioration of picture quality within an allowed range, the electronic watermark is kept retained. A watermark embedding operation and an MPEG2 encoding operation as well as a watermark detecting operation are cooperatively executed. Specifically, in the WM embedding operation, information regarding an operation state of an MPEG2 encoder, particularly, information regarding an amount of data is received. According to the received information of data, parameters such as the total amount of the watermark to be embedded, strength thereof, and an embedding position thereof are controlled.

Electronic watermark embedding apparatus and method and a format conversion device having a watermark embedding function

A reproducing apparatus for reproducing data from a recording medium and supplying the data to an external apparatus for recording of the data. The reproducing apparatus has a plurality of authenticators for authenticating the external apparatus and the reproducing apparatus selects an authenticator corresponding to a type of the data reproduced from the recording medium and conducts authentication with the external apparatus. After authentication is confirmed, the reproducing apparatus sends the data to the external apparatus to record the data by the external apparatus.

There are provided a voice outputting apparatus, a voice outputting system, a voice outputting method and a storage medium which, when the synthetic voices of a plurality of text data are to be uttered in overlapping relationship with each other, voice-synthesize the plurality of text data with different kinds of voices and to be outputted, thereby enabling the voices of the plurality of text data to be heard easily. The voice outputting apparatus is provided with a voice waveform generating portion for generating the voice waveform of text data, and a voice output portion for causing, when the overlapping of the voice outputs of a plurality of text data is detected, the respective text data to be outputted in different voices, or from discrete speakers, or in voices of different heights.

Voice synthesizing apparatus, voice synthesizing system, voice synthesizing method and storage medium

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Hiratsuka, Japan

Hiroyuki Kimura