Canon Kabushiki Kaisha

Yoshihiro Saga

Kenichi Morikawa

Kazuhiko Nakazawa

Ryuji Nishida

Shinji Sakai

Yukichi Niwa

Kenichi Kondo

Hisatoshi Baba

Hirotake Ando

Tsukasa Ogino

Before a device key generation procedure is updated in response to execution of revocation, a recorded transport stream is decrypted using an unupdated device key and is stored in a memory unit after being re-encrypted. In this manner, broadcast programs that are recorded before the revocation can be viewed while maintaining a copyright protection function.

Broadcast receiving apparatus and broadcast receiving method

The present invention provides a broadcast receiving apparatus that receives a broadcast wave containing multiple channels. The apparatus comprises, among other things, a selecting unit that selects a channel from the broadcast wave; a determination unit that determines, for all channels that can be selected by the selecting unit, whether or not the obtaining unit can obtain an encrypted second-type encryption key that can be decrypted by the decrypting unit using the updated first-type encryption key; and an updating unit that updates the computer program stored in the memory to the updated program in the case where the determination unit has determined that the obtainment is possible for all the channels.

Broadcast receiving apparatus and control method thereof

An image display system is constituted by a server and a client apparatus. The server includes a storage unit that stores a plurality of illumination spectrum data after associating the data with values of adjustment parameters, an acquisition unit that acquires the present set value of an adjustment parameter of the client apparatus, a selection unit that selects, from among a plurality of illumination spectrum data stored in the storage unit, illumination spectrum data with a smallest difference between a value of the corresponding adjustment parameter and a value of the adjustment parameter acquired by the acquisition unit, a generation unit that generates image data representing appearance of an image pick-up object under illumination corresponding to the illumination spectrum data selected by the selection unit, and a delivery unit that delivers image data generated by the generation unit to the client apparatus.

Image display system and control method therefor

A broadcast receiving apparatus includes a generating unit generating a first encryption key specific to the broadcast receiving apparatus including identification information; a recording unit recording a broadcast stream that is included in a certain channel of broadcast signals and that includes an individual information stream and a content stream requiring a second encryption key for decryption, the individual information stream periodically including first individual information items and second individual information items; a searching unit searching for the earliest first individual information item and the earliest second individual information item from the individual information stream included in the broadcast stream; and an overwriting unit overwriting the found second individual information item at a position that is earlier than the position of the found second individual information item and that is later than the position of the found first individual information item in the individual information stream.

Broadcast receiving apparatus receiving broadcast signal and method of controlling the apparatus

The present invention provides a receiving apparatus including a device key generating unit which generates a device key, a work key generating unit which generates a work key, a device key storing unit which sequentially stores the generated device key, every time the device key is updated, and a recording unit which stores a digital broadcast signal in a transport stream format, wherein in a case where the device key generating unit cannot generate, from the stored transport stream, a device key necessary for descrambling the stored transport stream when the stored transport stream is to be reproduced, the work key generating unit decrypts an encrypted work key that is obtained from the stored transport stream, using the device key stored in the device key storing unit, and generates a work key.

Receiving apparatus and method for controlling the same

An apparatus includes a memory which successively stores frame data of video data, an interpolating unit which generates interpolation frame data which is inserted between the frame data and stores the interpolation frame data in the memory, and a readout unit which successively reads out the frame data and the interpolation frame data from the memory at a frame rate higher than a frame rate of the video data. The apparatus further includes a generating unit which generates image data which is composited with the frame data and stores the image data in the memory, and a control unit which, based on display-related characteristics of the image data, controls the interpolating unit to halt the generation of the interpolation frame data, and also controls the readout unit to read out the frame data in duplicate instead of the interpolation frame data.

Image processing apparatus and image processing method

An information storage medium includes a recording unit to record externally input data, a first display unit, and a second display unit. Control is done to display information about the data recorded in the recording unit on the first display unit, and attribute information of the information storage medium on the second display unit.

Record reproduction apparatus, record reproduction method, record reproduction program, storage medium, and information storage medium

An image input apparatus includes (a) a connection unit capable of connecting with a detachable storage medium; (b) a storage unit that stores a program for controlling the image input apparatus; (c) a bus communicably coupled with the storage unit and the connection unit; (d) a container unit adapted to contain the detachable storage medium; (e) a detecting unit adapted to detect whether a cover on the container unit is open; (f) a control unit configured to use the bus to access the detachable storage medium or the storage unit; and (g) a display unit that displays a message notifying a user that the cover is open, if the detecting unit detects that the cover is open. If the detecting unit detects that the cover is open, the control unit disables access from the control unit to the storage unit.

Image input apparatus and control method

An imaging apparatus automatically detects an object and displays information on a display device based on a comparison between detected data and memorized (stored) data. The imaging apparatus includes a detecting circuit and a memorizing circuit. The detecting circuit detects the object based on the image data produced from an output of an imaging element and calculates a feature value representing a feature of the detected object. The memorizing circuit memorizes the feature value calculated by the detecting circuit. A feature value calculated by the detecting circuit based on the image data displayed on the display device is compared with the feature value memorized in the memorizing circuit. The display device displays information relating to the comparison result.

Imaging apparatus and method for controlling display device

In writing image data having a first size in a memory card (), a DMA circuit () transfers the image data to a memory card controller () until the write of the image data having the first size is ended. The memory card controller () checks that the state of the memory card is a predetermined state every time the write of image data having a second size smaller than the first size in the memory card () is ended and outputs a transfer end interrupt request signal to a CPU () in accordance with the end of the write of the image data having the first size in the memory card.

Signal processing apparatus for recording or playing back data

An image capture apparatus having an image capture unit, a memory, an image compression unit, an image display unit, a control unit, a refresh control unit, and an arbitration unit adapted to assign a higher priority to a process of providing image data from the image capture unit to the memory than a process of refreshing the memory and a process of accessing the memory by the control unit, to assign a higher priority to a process of refreshing the memory and a process of accessing the memory by the control unit than to a process of compressing image data stored in the memory by the image compression unit, to assign a higher priority to a process of providing image data from the memory to the image display unit than a process of refreshing the memory and a process of accessing the memory by the control unit, and to assign a higher priority to a process of refreshing the memory than a process of accessing the memory by the control unit.

Image processing apparatus, image processing method and recording medium

An object of this invention is to provide a solid-state image sensing apparatus capable of performing high-precision AF and AE without adding any camera mechanism or increasing power consumption. To achieve this object, at least S and S among photoelectric conversion cells output signals not for forming an image signal in a solid-state image sensing apparatus in which photoelectric conversion cells for converting an optical image formed by an optical system into an electrical signal are two-dimensionally laid out.

Solid-state image sensing apparatus, control method therefor, image sensing apparatus, basic layout of photoelectric conversion cell, and storage medium

In an optical information recording/reproducing apparatus which uses an actuator which can move a beam spot over the entire track area on a recording medium by supporting an objective lens for converging the beam spot on an optical disk by elastic members, the objective lens is located at the neutral position of the elastic members during a period other than the recording or reproduction operation of information, thereby reducing power consumption.

Optical information recording/reproducing apparatus and method wherein

An information recording/reproducing apparatus for effecting at least one of recording of information on and reproduction of information from a recording medium having a plurality of tracks, by using a light beam. The apparatus includes an objective lens for irradiating the recording medium with the light beam, a spring support member for supporting the objective lens for movement in a direction transverse to the tracks of the recording medium, a drive mechanism for driving the objective lens, a tracking error detector for detecting a deviation of the light beam relative to a track and for generating a tracking error signal, a servo control circuit for servo-controlling the objective lens on the basis of the tracking error signal, a seek circuit for effecting a seek operation of the light beam to a desired track while the servo control is in an OFF state and an offset circuit for supplying the drive mechanism, during the seek operation, with an offset to cancel a force applied to the objective lens due to a spring force of the spring support member relative to the desired track.

Information recording-reproducing apparatus provided with a

In an optical information recording/reproducing apparatus capable of executing a first recording method for recording information on either one of a land portion and a groove portion of a recording medium and a second recording method for recording information on both of the land portion and the groove portion, the recording medium is irradiated with a light beam, and a tracking error signal and/or focusing error signal is generated from the reflected light upon irradiation of the light beam. The level of the error signal is compared with a reference level to detect a tracking error state and/or focusing error state. The reference level is adapted to be switched according to the first or second recording method.

Growing community of inventors

Ichikawa, Japan

Yoshihiro Saga