Canon Kabushiki Kaisha

Tsutomu Ando

Hiroshi Inoue

Akio Fujii

Yoshikazu Yokomizo

Hiroshi Noda

Koji Aoki

Hitoshi Kimura

Daisuke Nakajima

Keiji Ishizuka

Susumu Igarashi

Yoshihisa Ishikawa

Toshifumi Nishiura

Yasuhiro Shiraishi

Ryo Akamatsu

Naoki Yamagata

There is provided a recording apparatus that records data to a memory card, comprising: a control unit configured to repeatedly transmit a data recording instruction that includes information designating recording target data and a recording destination to the memory card which manages a memory for data recording in the memory card as a plurality of recording areas and which can execute data recording with a guaranteed minimum recording speed in units of recording areas, wherein when transmitting a first data recording instruction that designates a start portion of a first recording area as a recording destination, the control unit requests the memory card to execute data recording with the guaranteed minimum recording speed with respect to the first recording area by including a speed guarantee request in the first data recording instruction.

Recording apparatus, recording method, storage medium, and memory card

A media data processing apparatus includes an input unit that inputs media data and intellectual property management data for managing intellectual property of the media data, a first encoding unit that encodes the media data, a second encoding unit that encodes the intellectual property management data, and a transmission unit that transmitted in packets the encoded media data, first timing information that controls decoding timings for the media data, the encoded intellectual property management data, second timing information that controls decoding timings of the encoded intellectual property management data, and synchronizing information for synchronizing the intellectual property management data and the media data.

Media data processing apparatus and media data processing method

An image processing apparatus includes a quantizing unit configured to quantize an input moving image signal using a set quantization scale; a coding unit configured to perform variable length coding on an output of the quantizing unit; an activity detecting unit configured to detect an activity of the input moving image signal; a quantization-scale determining unit configured to determine the quantization scale; a changing unit configured to change a value determined by the quantization-scale determining unit, and to set the changed value, as the quantization scale; and a filling level detecting unit configured to detect the filling level of a virtual buffer in a decoder which decodes the coded moving image signal, and to control the changing unit such that the degree of change in the quantization scale caused by use of the activity is reduced as the detected filling level decreases.

Image processing apparatus

A data management method which causes equipment such as a camera integral-type recording and reproducing apparatus to manage an external reference type container file and an audiovisual stream file by setting an attribution of all the external reference type container files recorded in a disk to an invisible state. Therefore, reproduction of the container file can be performed in the main body of the equipment, and only the audiovisual stream file can be reproduced when the disk is reproduced in, e.g. a personal computer.

Method of managing data on recording medium

This invention generates encoded data within a required buffer size with minimum deterioration of image quality by finely adjusting a code data size to be generated so that an encoding condition can be changed to one of multiple levels on the basis of a cumulative encoded data size which is being generated during an encoding process of one frame which forms a moving picture. To this end, a VBV buffer zone controller compares a cumulative encoded data size during encoding of one frame with a plurality of thresholds, and outputs the comparison result to a vector processing controller, coefficient processing controller, and quantization controller. The vector processing controller controls a motion detection/compensation unit to fix/not to fix vectors for motion compensation. The coefficient processing controller determines an area size of a plurality of DCT coefficients to be masked, which are obtained by a DCT unit. The quantization controller determines the quantization step size of a quantizer. These vector processing controller, coefficient processing controller, and quantization controller adjust an encoded data size to be generated in multiple levels.

Moving picture encoding apparatus and method, computer program and computer-readable storage medium

In a system for transmitting multimedia data including video data, audio data, graphic data, text data and the like via a network, sets of media data are stored in a plurality of servers in a distributed state. When requested multimedia data is assigned from a transmitter, necessary sets of data from among media data stored in the servers in a distributed state are acquired by corresponding receivers in accordance with the assignment. A synchronization control unit and a multiplexer multiplex the acquired media data based on time stamps of the data, and transmit multimedia data after the multiplexing to a client which has assigned the multimedia data. According to such a configuration, distributed multimedia servers can be constructed without taking into consideration of influence by the effective rates of transmission channels from the respective servers.

Multimedia-data transmission system, apparatus and method

Image data is encoded using a buffer memory, and code amount of image data occupying the buffer memory upon coding is detected and buffer information related to the detected code amount is outputted. The coded image data and the buffer information are recorded on a recording medium. In a case where additional recording or overwriting is started, the buffer information in a position immediately before a start position of the additional recording or overwriting is read out, and coding is started based on value, thereby buffer overflow can be prevented.

Image data recording apparatus and method

A digital contents distribution system including a client, a digital contents server, a roaming server, and a network connected between these terminals. The roaming server includes a receiving section for receiving from the digital contents server a digital content with an intellectual property right protection system protecting the digital content, and a section for converting the intellectual property right protection system of the received digital content into another kind of intellectual property right protection system, and a section for delivering the converted system to the client.

Digital contents distribution system, digital contents distribution method, roaming server, information processor, and information processing method

A natural-image signal obtained by encoding a natural image is input. An artificial-image signal obtained by encoding an artificial image is input. The natural-image signal and the artificial-image signal are adaptively multiplexed according to the communication status of a communication network, and the resulting multiplexed signal is transmitted via the communication network.

Image processing apparatus, image processing method, image processing program, and computer-readable storage medium storing image processing program code

An image processing apparatus is constructed by: a receiving unit for receiving scene data describing a 3-dimensional scene, media data associated with the scene data, and copyright-protected data; a scene decoder for forming copyright-protected scene data and copyright-unprotected scene data from the scene data on the basis of the copyright-protected data; and a renderer for rendering the 3-dimensional scene on the basis of the media data, the copyright-protected scene data, and the copyright-unprotected scene data.

Image processing apparatus, method, and storage medium for controlling display of copyright-protected information

A receiver receives data made up of a text block for voice synthesis containing animation control information, and animation data. A demultiplexer extracts the animation data from the data, and stores the animation data in an external storage device. The demultiplexer extracts the text block for voice synthesis from the received data, and provides the text block to a text reading-off unit to perform voice synthesis/output. Along with the progress of voice synthesis, the demultiplexer extracts the animation control information from the text block of the received data. An animator controls display of the animation data stored in the external storage device in accordance with the extracted animation control information.

Information processing apparatus and method and information transmission system

Address information generated and output by an address converter for each pixel of input image data in accordance with the phase based on the position of the pixel to be coded is stored in an address storage divided into address groups which are periodically referred to. Information indicative of the occurrence probability of the pixel to be coded and phase information of the pixel are selectively output from the address storage, and an arithmetic coding is performed for the output. During the processing, update data is written in to one group while a read-out is being performed for the other group. A template is constituted by excluding a pixel which predeses one pixel, and a prediction state in each phase is divided into two parts. The template output is applied to both of the divided storage devices, and read actions are independently performed.

Coding/decoding apparatus and coding/decoding method

In an image processing apparatus, image data having a first resolution read from a first image memory is encoded by an arithmetic encoder and is converted into image data having a second resolution by an image reduction unit, and the image data having the second resolution is stored in a second image memory. Thereafter, the image data having the second resolution read from the second image memory is encoded by the arithmetic encoder and is converted by the image reduction unit into image data having a third resolution, and is stored in the first image memory in which the image data having the first resolution has been stored.

An image coding device for coding image data by means of an arithmetic code detects bit positions of value '1' in a register which stores a plurality of bits of interval data representing a current coding interval used for coding image data. Subsequently, the image coding device shifts the interval data in the register according to the bit position.

Growing community of inventors

Kanagawa, Japan

Tsutomu Ando