Victor Company of Japan, Limited

Sanyo Electric Co., Ltd.

Pioneer Corporation

Sharp Corporation

Hitachi, Ltd.

Fujitsu Corporation

Hitachi Global Storage Technologies Japan, Ltd.

Sharp Kabushiki Kaisha Corporation

U.S. Philips Corporation

Sony Semiconductor Solutions Corporation

Victor Company

Phoenix Technologies K.k. of Tokyo

Takeo Ohishi

Seiji Higurashi

Mitsuo Harumatsu

Yoshihiro Hori

Tatsuya Hirai

Kenichiro Tada

Ryoji Ohno

Yuichi Kanai

Tomoyuki Shindo

Yasuaki Yamada

Akihiro Tozaki

Takayuki Hasebe

Masafumi Tsuru

Yutaka Tanaka

Tsuyoshi Suzuki

Mitsuo Fujita

Yoichi Zenno

Kazuhiro Yamada

Kazuyuki Yamamoto

Takayuki Yoshigahara

Jun Murayama

Shuzo Sato

Jun Kamada

Yasuhiko Teranishi

Ken Nishida

Yoshinobu Tsuji

An image processing device includes depth acquisition circuitry that uses a parallax corresponding to image data to electronically generate a depth map of an image and object detection circuitry that uses distance information and the depth map to electronically detect a specific object in the image by identifying specific pixels in the image data. The depth map includes information that pertains to distances from a reference position for each pixel in the image.

Image processing device, imaging device, image processing method and program

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 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

An information recording apparatus is provided which can record broadcasting information so as to accurately identify and reproduce broadcasting information to be reduced while increasing convenience in reproducing the broadcasting information. Time control is performed during reproduction in allocation units ALU based on the receiving time of the first packet and the receiving time of the last packet in the allocation unit ALU included in the broadcasting information. The allocation unit ALU includes a plurality of packets. Time control is performed also in access units, each of which includes an I picture, based on the display time information or the receiving time information of the I picture included in the packet.

An information editing apparatus is provided which can prevent a thumbnail image, which shows the contents of recorded information recorded on an information recording medium, from being accidentally changed by a misoperation of the user. The information editing apparatus includes a deciding devicefor deciding whether a thumbnail image can be changed or not based on change permission information, which indicates whether a change can be made on the thumbnail image showing the contents of recorded information recorded on a recording medium. When the deciding devicedecides that a change is not permitted, a change of the thumbnail image is prohibited.

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

First information is divided into equal-size information pieces. Serial numbers are assigned to the information pieces, respectively. An encryption key is generated from a base number and a variable number varying for each of the information pieces. The base number is common to an information range managed by one licence. The first information is encrypted on a block-by-block basis in response to the encryption key to get encryption-resultant information for every predetermined minimum information unit smaller than the sizes of the information pieces. The encryption-resultant information is recorded on a recording medium. A determination is made as to logical addresses of heads of portions of the recording medium which are loaded with portions of the encryption-resultant information corresponding to the respective information pieces. Second information representing a correspondence relation between the determined logical addresses and the assigned serial numbers is recorded on the recording medium.

Information recording apparatus having function of encrypting information

A recording area of a hard disk is managed by units. Each unit comprises physically continuous recording regions having predetermined size, and usage status of the unit is stored in an allocation unit (AU) management table. Data requiring a real time processing is stored in each unit. When the usage status of the unit is changed or modified due to the recording or deletion of data, the AU management table is updated and then information indicative of the fact that the AU management table has been updated is recorded. An apparatus where the final change is made is detected at the time the hard disk is inserted or a file system is initialized. And if the apparatus which last made the change adopts the file system which does not use the AU management table, then the table is reconfigured so as to retain the consistency of the AU management table.

Method and apparatus for controlling the recording of digital information, by using unit management table

A packet recording/reproducing system is provided which records or reproduces packets on or from tracks formed in time sequence on a magnetic tape. In a recording operation, the packet recording/reproducing system adds to input packets time stamps whose values are synchronous with packet arrival time control clocks produced by the system. The timing with which the packets are recorded on the magnetic tape is controlled by the arrival time control clocks so that a given number of the packets inputted at high data rate are recorded within a one-track area, a two-track area, or a one-track over area defined across at least two of the tracks, thereby minimizing the loss of capacity of the magnetic tape.

Packet data recording/reproducing system

First information is sent from a contents-information receiver apparatus to a contents-information sender apparatus. The first information includes a combination of certificate information and second information for the contents-information receiver apparatus. The first information further includes a signal of a signature for the combination of the certificate information and the second information. In the contents-information sender apparatus, a determination is made as to whether the combination of the certificate information and the second information in the first information is correct or wrong in response to the signal of the signature in the first information. In the contents-information sender apparatus, the second information is extracted from the first information before being stored. The second information for the contents-information receiver apparatus is sent from the contents-information receiver apparatus to the contents-information sender apparatus. In the contents-information sender apparatus, the sent second information is collated with the stored second information.

Authentication system, and contents-information sender and receiver

A first rotational head of a first azimuth angle and a second rotational head of a second azimuth angle are arranged on a rotational drum rotated at a constant rotational speed. Also, input digital signals are processed in a signal recording system to form blocks of digital recording signals, a magnetic tape is moved by a tape driving unit according to an information signal generated in a control unit, and the blocks of digital recording signals and the information signal are recorded on the magnetic tape in a recording operation through the first and second heads alternately tracing the magnetic tape. In a reproducing operation, the signals are read through the first and second heads and are reproduced in a signal reproducing system. When the input digital signals are transmitted at a standard data rate, the magnetic tape is rotated at a first traveling speed in the recording and reproducing operations. When the input digital signals are transmitted at a second data rate equal to 1/N (N is a natural number) the standard data rate, the magnetic tape is rotated at a second traveling speed equal to 1/N the first traveling speed in the recording and reproducing operations. Therefore, the input digital signals can be recorded and reproduced regardless of the data rate of the signals.

Magnetic recording and reproducing apparatus for automatically setting the traveling speed of the recording medium in accordance with the transmission rate of the input digital signal

A clock signal generation apparatus includes a first device for extracting reference information from an input digital signal. A first oscillator generates a reference clock signal having a frequency depending on a control signal. A second oscillator generates a basic signal having a fixed frequency. A first circuit loop operates for generating a first error signal in response to the reference clock signal and the extracted reference information, and for feeding the first error signal in response to the reference clock signal and the control signal. A second device operates for enabling one of the first circuit loop and the second circuit loop and disabling the other.

Clock signal generation apparatus

When a received broadcast signal is received in a digital broadcast signal receiving apparatus, an entitlement management message EMM representing broadcast-watching enabling information is extracted from the received digital broadcast signal in an EMM extracting unit regardless of any operation. An extracted digital broadcast signal already descrambled in a preceding step is recorded in a recording unit. When a user selects a reproducing operation in a current step, particular digital broadcast information indicating a particular television program is extracted from the extracted digital broadcast signal in a packet extracting unit. Therefore, the particular television program can be reproduced. When a user selects a receiving operation in the current step, pieces of digital broadcast information indicating television programs are extracted from the received digital broadcast signal in the packet extracting unit and are descrambled according to the message EMM, and the pieces of digital broadcast information are recorded as an extracted digital broadcast signal of the current step in the recording unit. Accordingly, because the message EMM is extracted regardless of any operation, the pieces of digital broadcast information indicating television programs can be reliably extracted from the digital broadcast signal in the receiving operation.

Apparatus for receiving digital broadcast signal and apparatus for recording and reproducing digital broadcast information included in the digital broadcast signal

A clock signal generation apparatus includes a first device for extracting reference information from an input digital signal. An oscillator operates for generating a reference clock signal having a frequency depending on a control signal. A second device connected to the first device and the oscillator operates for generating the control signal to the oscillator in response to the reference clock signal generated by the oscillator and the reference information extracted by the first device, and for locking a phase of the reference clock signal to the reference information. A third device connected to the second device operates for deciding whether or not the phase of the reference clock signal is successfully locked to the reference information. A fourth device connected to the second device, a memory, and the third device operates for storing the control signal generated by the second device into the memory when the third device decides that the phase of the reference clock signal is successfully locked to the reference information. A fifth device connected to the memory, the oscillator, and the second device operates for selecting one of the control signal currently generated by the second device and the control signal stored in the memory, and for feeding the selected control signal to the oscillator.

Growing community of inventors

Yokohama, Japan

Takeo Ohishi