Sanyo Electric Co., Ltd.

Fujitsu Corporation

Hitachi, Ltd.

Victor Company of Japan, Limited

Pioneer Corporation

Sharp Corporation

Hitachi Global Storage Technologies Japan, Ltd.

Other

Sharp Kabushiki Kaisha Corporation

Renesas Electronics Corporation

Phoenix Technologies Ltd.

Nippon Columbia Co., Ltd.

Phoenix Technologies K.k. of Tokyo

Yoshihiro Hori

Toshiaki Hioki

Takayuki Hasebe

Miwa Kanamori

Takahisa Hatakeyama

Takeaki Anazawa

Tatsuya Hirai

Tadaaki Tonegawa

Kenichiro Tada

Yuichi Kanai

Hisashi Matsuyama

Takeo Ohishi

Satoshi Sumi

Kenji Nakao

Takatoshi Yoshikawa

Ryoji Ohno

Jun Kamada

Shigeki Furuta

Seigou Kotani

Kenji Tanase

Hiroshi Takemura

Masayuki Hatanaka

Atsushi Yamaguchi

Keiji Horiuchi

Masafumi Tsuru

Masataka Takahashi

Akihiro Tozaki

Noboru Mamiya

Kenji Asano

Kenji Torazawa

Yoshiharu Uchihara

Seiya Ota

Megumi Makino

Ken Mashitani

Goro Hamagishi

Satoshi Takemoto

Seiichiro Takahashi

Akiomi Kunisa

Nobuo Itoh

Tohru Kawabata

Masaya Okumura

Jiro Yokoyama

Masakazu Taguchi

Akihisa Inoue

Masato Furuya

Hiroshi Watanabe

Makoto Yoshioka

Yoshihisa Suzuki

Yoshinori Hatayama

Sayoko Tanaka

Etsuko Sugimoto

Kazuya Ogawa

Shigeki Hori

Mineki Taoka

Hideo Kurogane

Yoshikazu Asano

Keiichiro Doi

Shuji Yanase

Kazuo Naganawa

Yosuke Mizutani

Manabu Endo

Toshiki Yoshida

Manabu Endou

Taku Katayama

Taisuke Otsubo

Tokuya Miyagi

Junji Nakata

Yoshizo Sato

Shuichi Konno

Takashi Kozakai

Aiichiro Fujiyama

Takeshi Higuchi

Taizou Kinoshita

A deviation amount of a pictographic character portion of 'G' is calculated based on a description of a file, and left eye-use display data (ABCDEF GIJK) and right eye-use display data (ABCDEG HIJKL) in a portion (b) in FIG.are generated. A starting location of a description of 'ABCDEFGHIJKL' is specified by an X coordinate and a Y coordinate described in the file. In addition, a process of alternately writing pixel data constituting the left eye-use display data (ABCDEF GIJK) and pixel data constituting the right eye-use display data (ABCDEG HIJKL) from a pixel data storing location of a VRAM corresponding to the coordinates (that is, one right eye-use pixel and one left eye-use pixel are alternately written one after another in a horizontal direction as a display image) is carried out.

Stereoscopic image display apparatus, text data processing apparatus, program, and storing medium

Confidential data such as license data is encrypted using the symmetric key encryption algorithm alone which requires smaller computation amount, and is readily realized by hardware elements, as compared with the public key encryption algorithm. A license-data transmitter (y) encrypts license data LIC using two keys Kscy and Kssx supplied from a license-data receiver (x). The license data is provided to the license-data receiver in the form of encrypted license data E(Kscy, E(Kssx, LIC)). This enables high-speed processing without deterioration in security even if data access such as recording/readout of data is repeated.

Method for transmission/reception of contents usage right information in encrypted form, and device thereof

A liquid crystal display apparatus is composed of a plurality of pixels, a plurality of switches and a driver circuit for driving the plurality of switches. Each of the plurality of pixels is provided with a liquid crystal element in which a liquid crystal layer is sandwiched between a pixel driving electrode and a common electrode confronting with each other, a first sampling and holding circuit, a second sampling and holding circuit and a switching device. The switching device switches a positive image signal voltage and a negative image signal voltage, and supplies the positive and negative image signal voltages alternately to the pixel driving electrode.

Liquid crystal display apparatus, and driving circuit and driving method thereof

Upon a license-data transmitter verifying a certificate C[KPdx] (the license-data receiver and the license-data transmitter will be referred to as 'x' and 'y', respectively), the license-data transmitter transmits challenge information Ep(KPdx, Kcy) to the license-data receiver. In response to the challenge information, the license-data receiver transmits session information Es(Kcy, Ksx//KPpy) to the license-data transmitter. The license-data transmitter provides encrypted license data Es(Ksx, Ep(KPpx, LIC)) in a form encrypted using these two keys Ksx and KPpx thus received. With the cryptosystem according to the present invention employing EC-DH as the public key cryptosystem, the transmitter provides the second or subsequent license data without transmission of the challenge information and without updating the shared key.

A license-data transmitter (in a case of recording, a recording deviceserves as a license-data transmitter, and in a case of readout, a storage deviceserves as a license-data transmitter) verifies a certificate C[KPdx] (the license-data receiver and the license-data transmitter will be represented by 'x' and 'y', respectively) of a license-data receiver (in a case of recording, a storage deviceserves as a license-data receiver, and in a case of readout, a reproducing deviceserves as a license-data receiver), following which the license-data transmitter transmits a certificate C[KPdy] thereof to the license-data receiver in the form of challenge information E(KPdx, Kcy)//C[KPdy]. Then, the license-data receiver verifies the certificate C[KPdy] of the license-data transmitter. Only in a case that the license-data transmitter device has been authorized, the license-data receiver transmits the session information E(Kcy, E(KPdy, Ksx)//KPpx) to the license-data transmitter in response to the challenge information. The license-data transmitter provides the license data to the license-data receiver using the key Ksx and KPpx thus received.

Encrypted music data and additional information necessary for accessing a server () are copied from a CD-ROM () onto a memory card (). The memory card () receives via a digital portable phone network the distribution of a contents decoding key (Kc) necessary for decoding encrypted music data and control information data (AC) for limiting the number of accesses to the memory card from the server ().

Data distributing system and recording medium used for it

A memory card () stores access restriction information (AC) to a license information hold unit () arranged in a TRM area. Access restriction information (AC) has information for example of a frequency of reproduction allowed and a number of licenses owned. A controller () in reproducing and transferring content initially confirms access restriction information (AC) and thereafter effects reproduction and transfer and after the reproduction and transfer are effected updates access restriction information (AC), as required, for storage in a license information hold unit ().

Data distribution system and recording device for use therein

A log region (A) and a license region (B) are arranged in a memory of a memory card. The license region (B) stores licenses such as license IDs and license keys Kc as well as validity flags corresponding to entry numbers-(N&#x2212;1). The log region (A) includes a receive log () and a send log (). The memory card serving as a sender of the license accepts a receive state from the memory card on a receiver side, and validates the validity flag of a region designated by the entry number in the send log () when the receive state is ON. Consequently, even when communication is interrupted during shifting or copying of the license, the license to be shifted or copied can be restored.

Data recorder restoring original data allowed to exist only uniquely

A controller of a recording device issues a secure command to a storage device, and then waits the time estimated necessary for the storage device to execute the secure command before issuing the next secure command. When a controller of the storage device is executing the previous command, it notifies the recording device of being in process. When the previous command has been completed normally, the controller moves to the next process. Information for estimating the execution time of the command is obtained from the storage device in advance.

Method and apparatus for encrypting data to be secured and inputting/outputting the same

An information recording apparatus is provided whereby in the reproduction of broadcasting information, the broadcasting information can be recorded so that the combination and so on of contents included in the broadcasting information can be recognized without the need for reproducing the broadcasting information itself. An information recording apparatus for recording broadcasting information constituted of a packet which has a predetermined amount of information and includes different types of contents, each type including one or more contents, the apparatus including a controller. The controllergenerates contents group information based on correlation information which is included in the received broadcasting information and indicates a correlation between the contents, the contents group information including identification information for identifying the relationship between the packet and the content and type information indicating the type of the content, the contents group information indicating a contents group to include the one or more contents, and the controllerrecords the generated contents group information on a hard diskwith the broadcasting information.

Information recording device, information reproduction device, information recording method, information reproduction method, information recording program, information reproduction program, and information recording medium

A log region of a memory card includes a plurality of log entries and a plurality of administration information storage units. Each of the plurality of log entries includes a license ID region, a Ks2region, a status region and a KPcmy region. The status region includes a ST1 region and a ST2 region to store the communication status. The license ID region stores a license ID. The Ks2region stores a session key. The KPcmy region stores a class public encryption key of a memory card. The administration information storage unit stores the last record sequence number corresponding to the log entry storing history information of the latest communication.

Storage apparatus that can properly recommence input and output of classified data

A technology is provided to improve tamper resistance in encrypting data to be secured and inputting/outputting the data between a recording device and a host device. When the recording device issues an input/output command to a storage device to input/output data to be secured, the recording device attaches an ID to the command to identify to which cryptographic input/output processing the command belongs. Upon reception of a sequence command, the storage device receives the command if its ID has been allocated and the command is verified to have been issued in the correct sequence. The sequence ID is used to identify a process system while appropriately managing the steps of executing commands.

A controller in a hard disk serving as a data storage device stores a license including a content key for decrypting encrypted content data E and others in a secure data storage portion. The license is managed in the secure data storage portion in accordance with a LBA, and the LBA for storing the license, which is being processed for transmission, is stored as a log in a log memory of the secure data storage portion. When a failure occurs during the transmission processing, the license, which was being processed for transmission, is specified based on the LBA stored in the log memory.

Data storing device for classified data

A data storage device includes a secure data storage portion including a log memory. The log memory is formed of a plurality of banks, and stores history information in the plurality of banks in a ring-like fashion. The plurality of banks are designated by addresses (0&#x2212;(N&#x2212;1)), respectively. Each of the items of the history information respectively stored in the banks includes a management number region, a license ID (LID) region, a Ksregion, an STregion, an STregion, a KPcmy region and a LBA region.

Data storage device capable of storing multiple sets of history information on input/output processing of security data without duplication

When '0' indicating that intensity of a stereoscopic effect is the lowest is applied as a stereoscopic effect tag, a stereoscopic image is allowed to be displayed as it is. On the other hand, when '1, 2, and 3' are applied as the stereoscopic effect tag, a reduction ratio is determined depending on a value of the stereoscopic effect tag (one-half, one-third, etc.). On the basis of this reduction ratio, the stereoscopic image is displayed and letters of &#x201c;warning&#x201d; are displayed. A user selects whether to display the stereoscopic image according to a producer's intention or to maintain the size-reduced stereoscopic image. If an operation requiring for a display of the stereoscopic image as it is intended by the producer is performed, an original stereoscopic image is displayed.

Stereoscopic image generating device and stereoscopic image delivery method

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Gifu, Japan

Yoshihiro Hori