Canon Kabushiki Kaisha

Asahi Kasei Kabushiki Kaisha

Asahi Kasei Chemicals Corporation

Tokyopearl Co., Ltd.

Tokyo Shinzyu Co., Ltd.

Takeshi Aoyagi

Hideo Saito

Takashi Kawai

Akihiro Matsuya

Masahiro Funada

Yoichi Takaragi

Yoshifumi Araki

Koichi Ishimoto

Masanori Yamada

Shigeo Yamagata

Yasumichi Suzuki

Katsuyoshi Maeshima

Masanori Ikeda

Yoshinobu Umeda

Tadashi Matsushita

Takahiro Hisasue

Kenta Shibuya

Atsushi Yasumoto

Nobuyuki Uematsu

Kosuke Nakatani

Kazuyoshi Yamazawa

Ippei Kameda

Nobuto Hoshi

Katsuya Nakano

Makiko Hattori

An image forming apparatus includes: a plurality of photoreceptors; a plurality of exposure heads provided so as to correspond to the plurality of photoreceptors, respectively, each of the plurality of exposure heads including a plurality of light emitting units configured to emit light for exposing the corresponding photoreceptor, the plurality of light emitting units being arranged along a rotation axis line of the corresponding photoreceptor; and a generation unit configured to generate a line synchronization signal for each of the plurality of exposure heads to control a light emission timing in a rotating direction of the corresponding photoreceptor, the generation unit being configured to adjust a cycle of the line synchronization signal in accordance with each of the plurality of exposure heads.

Image forming apparatus including plurality of photoreceptors and controlling a light emission timing in a rotating direction of a corresponding photoreceptor

A power supply control unit controls supply and stoppage of power to a plurality of blocks having two or more modules. A clock control unit controls supply and stoppage of clocks to the two or more modules in the plurality of blocks. A first control unit verifies validity of a program stored in a storage unit. A second control unit executes the program determined to be valid as a result of verification by the first control unit. While the program is verified by the first control unit, the power supply control unit supplies power to a block including a module required for the verification, and the clock control unit stops a clock to a module not required for the verification of the block including a module required for the verification.

Information processing apparatus and control method for selectively supplying power and clocks to module circuits used for verification

An information processing apparatus includes a processor, an information storage unit, a voltage supply unit, and a control unit. The information storage unit is configured to hold information indicating a voltage to be supplied to the processor. The voltage supply unit is configured to supply a predetermined voltage to the processor based on the information stored in the information storage unit. The control unit is configured to detect an alteration in software to be executed by the processor, and to make a setting for supplying a predetermined voltage to a power source unit based on the information stored in the information storage unit.

Information processing apparatus capable of detecting alteration in software

An information processing apparatus includes a verification unit that performs verification of software to be executed by an execution unit, a retaining unit that retains information indicating a voltage supposed to be applied to the execution unit, a power supply unit that applies a predetermined voltage to the execution unit on the basis of the information, and a clock signal output unit that outputs clock signals having frequencies, and the clock signal output unit outputs a clock signal having a first frequency to the verification unit when verification of the software is performed, outputs a clock signal having a second frequency lower than the first frequency to the execution unit before the predetermined voltage is applied to the execution unit, and outputs a clock signal having a third frequency higher than the second frequency to the execution unit after the predetermined voltage is applied to the execution unit.

Information processing apparatus capable of detecting software tampering and control method therefor

An information processing apparatus includes: a controller that controls a plurality of storage devices and transmits and receives data to and from the plurality of storage devices; and a bridge that communicates with the controller via a predetermined interface, communicates with each of the plurality of storage devices via each of a plurality of predetermined interfaces, and bridges the communications between the controller and the plurality of storage devices. The controller acquires information of a master boot record from each of the plurality of storage devices, and generates information of a master boot record in a virtual storage device to provide the plurality of storage devices as one storage device. The bridge controls a process for writing the information of the master boot record in the virtual storage device into a region of a master boot record in a first storage device out of the plurality of storage devices.

Information processing apparatus and control method of information processing apparatus

A random, number generating apparatus includes a first ring oscillator and a second ring oscillator, each having a quantity of delay elements different from, the other, a signal output unit, a selecting unit, a logic circuit, and a random signal output unit. The signal output unit receives a first signal output from the first ring oscillator and a second signal output from, the second ring oscillator and outputs the first signal or the second signal. The selecting unit selects a signal to be output from the signal output unit. The logic circuit receives the signal selected by the selecting unit and the output from the signal output unit and outputs an output signal. The random signal output unit receives the output signal output from the logic circuit and a clock signal and outputs a random signal.

Random number generating apparatus

A hydrogenated block copolymer composition, comprising:

Hydrogenated block copolymer composition and pressure-sensitive adhesive composition

An image processing apparatus that operates in a first power state or a second power state in which power consumption is smaller than in the first power state includes a detection unit that includes regions in which an object is detected, an analysis unit configured to analyze results of detection obtained in the plurality of regions, wherein the analysis unit enters a power saving mode in the second power state, a control unit that causes the analysis unit to return from the power saving state in a case where an object has been detected in any of the plurality of regions included in the detection unit in the second power state, and a power control unit that, in a case where the analysis unit determines that an object has approached the image processing apparatus, shifts the image processing apparatus from the second power state to the first power state.

Image processing apparatus, electronic apparatus, detection device, method for controlling image processing apparatus, method for controlling electronic apparatus, and method for controlling detection device

A system comprises a semiconductor integrated circuit including a data processing unit that operates in any of a plurality of states, and a selection unit that selects a state from the plurality of states in accordance with a voltage supplied from a power supply unit and makes the data processing unit operate in the selected state, and a power supply unit including a control unit that starts supplying a voltage to the semiconductor integrated circuit based on an initial voltage value setting at startup and makes a voltage to be supplied transit to a predetermined voltage based on information of voltage value in response to a supply voltage having reached the initial voltage value, wherein the selection unit switches the data processing unit to a predetermined state when a supplied voltage has reached the predetermined voltage value from the initial voltage value.

Power supply voltage control system

If a pyroelectric sensor does not detect a heat source after it is determined that the heat source has moved outside a detection region of the pyroelectric sensor, an image processing apparatus is controlled to change from a first power state to a second power state. If the pyroelectric sensor does not detect a heat source before it is determined that the heat source has moved outside the detection region of the pyroelectric sensor, the first power state is stayed in.

Image processing apparatus and control method for detecting heat source using pyroelectric sensor

An information processing apparatus includes a processing unit, a power supply control unit configured to control powering on and off of the processing unit, and a controller unit configured to access the processing unit irrespective of a power supply state of the processing unit. The power supply control unit powers off a processing unit that is not in use, powers on a processing unit that is accessed by the controller unit, and outputs a predetermined control signal to the controller unit. The controller unit recognizes that an error occurs in a case where, after accessing a processing unit, the controller unit does not receive a response from the accessed processing unit until a time-out time elapses, and delays recognizing the error when the control signal is received.

Information processing apparatus, method for avoiding a time-out error

This invention provides an information processing apparatus which includes a first storage unit and a second storage unit and implements a function of causing the first storage unit and the second storage unit to store data redundantly while maintaining a power saving mode even upon receiving an access request from an external apparatus in the power saving mode, and a method of controlling the same. To accomplish this, upon receiving an HDD access request in the power saving mode, the information processing apparatus operates after transiting to an HDD access mode in which only minimum necessary functions are activated without activating the main CPU. The contents of the HDD changed during the HDD access mode are stored as history information. Upon transiting from the power saving mode to the normal operating mode, the data in another HDD is updated in accordance with the history information, thereby implementing a mirroring function.

Information processing apparatus and method of controlling the same

An image processing device and an image processing method provided herein are capable of achieving data compression with reduced image degradation even if the data is image data entered from an input device such as a scanner. The entered original image data is divided into 2&#xd7;2 pixel blocks. Two-color-form compression processing and four-color holding compression processing are performed on a block-by-block basis. The compression result data which leads to a smaller one of the differences in gradation value between the original image data and the two-color-form compression difference data and between the original image data and the four-color compression difference data is output as the compression processing result of the block.

Image processing device, image processing method and image processing program

An image processing apparatus comprises: an unit configured to compress image data based on values of pixels and a layout of the pixels for each tile including the predetermined number of pixels; an unit configured to calculate a representative value from the values of the pixels included in the tile; an unit configured to determine based on a distribution of the representative values of tiles included in a first area including the first number of tiles whether or not a tile of interest included in the first area is to be corrected; an unit configured to calculate a correction value for the tile of interest based on the representative values of tiles included in a second area including the second number of tiles; and an unit configured to add representative values of the tiles, determination results of the tiles, and the correction value to the image data compressed.

Image processing apparatus for data compression, control method, and computer-readable medium

An image forming device is provided which embeds a decodable two-dimensional code when embedding (printing) a two-dimensional code in an original document. The image forming device represents additional information by associating virtual points with dots in one-to-one correspondence and arranges dots in positions deviated from virtual points associated with the dots. The image forming device includes a determining unit for determining intervals between the virtual points and virtual points adjacent to the virtual points and determining sizes of the dots, and an arranging unit for arranging dots having the determined sizes to respective virtual points having the determined intervals. The determining unit may determine dots to have sizes other than sizes proportional to the determined intervals.

Growing community of inventors

Tokyo, Japan

Takeshi Aoyagi