Canon Kabushiki Kaisha

Dena Co., Ltd.

Bandai Namco Entertainment Inc.

Atsushi Otani

Satoru Yamamoto

Keita Takahashi

Hirotaka Seki

Shoji Takeda

Akihiko Sakai

Shigeo Hata

Katsutoshi Ushida

Yuya Katsutani

Hideyuki Okabayashi

Shinichirou Umetani

Sokichi Shimooka

Yasumichi Onishi

Yuui Hishinuma

Terukazu Kanematsu

A server system and the like allow the users who play asynchronous games to perceive each other's presence to prompt the users to communicate with each other and feel a sense of solidarity. When the progress of a first game played by one player has changed to be advantageous to the player due to the use of an AP recovery item or the like, a parameter in the first game is incremented (e.g., action points AP are recovered). A parameter in a second game played by a friend user of the player is also incremented (e.g., the action points AP are recovered) through an extension control process. An activation notification W12 that notifies to that effect is displayed on a user terminal of the player who plays the first game.

Server system and method for controlling computer system

An image forming apparatus that is capable of reducing an effect of variation of specific inductive capacity of toner due to environmental variation with a small detection error when the remaining toner amount is detected. The image forming apparatus forms an image with an electrophotographic system. A container unit stores toner. A toner detection unit has sensor modules that are arranged at positions where the toner is stagnated in the container unit, and that show different electrostatic capacities with respect to the same toner thickness. An electrostatic capacity detection unit detects the electrostatic capacities of the sensor modules. A determination unit determines a remaining toner amount in the container unit based on the electrostatic capacities of the sensor modules that are detected by the electrostatic capacity detection unit.

Image forming apparatus, control method therefor, and storage medium storing control program therefor

The present image forming apparatus includes a first control unit and a second control unit driven by built-in clock oscillators to realize the distributed control. The first control unit generates, using a first timer driven by the built-in clock oscillator of the first control unit, a pulse signal corresponding to a predetermined clock rate and outputs the pulse signal to the second control unit. The second control unit measures, using a second timer driven by the built-in clock oscillator of the second control unit, a pulse width of the pulse signal outputted from the first control unit, and calculates a correction coefficient using reference pulse width corresponding to the predetermined clock rate and the measured pulse width. The processing unit processes using the calculated correction coefficient.

Image forming apparatus and control apparatus

This invention provides an image forming apparatus to which a distributed control system is applied and which improves error detection accuracy in each control unit. To accomplish this, the image forming apparatus includes a master control unit which controls the overall image forming apparatus, a plurality of sub-master control units which control a plurality of functions required to implement image formation, and a plurality of slave control units which control loads required to implement the plurality of functions. Each slave control unit includes a monitoring unit which monitors the operation of the other active slave control unit and performs an error diagnosis when the slave control unit is inactive.

Image forming apparatus

This invention provides an image forming apparatus that suppresses a control error between CPUs when the CPUs operate in cooperation with each other in distributed control by the CPUs. To accomplish this, the image forming apparatus utilizes a distributed control system. Respective CPUs measure time interval concerning image formation processing using their built-in clock oscillators, and perform operations in cooperation with each other. Correction coefficients are calculated based on the time interval measured by the respective CPUs to correct a measurement error generated by the operation an error of the respective clock oscillators. Clock count values each indicating a timing to drive a load is corrected based on the correction coefficients.

The image forming apparatus has the plurality of control units and executes distributed processing in which any one control unit having monitoring execution authority monitors for an abnormal condition in each control unit. Each control unit determines, from its own processing load, monitoring capability information that indicates whether monitoring for an abnormal condition is possible or not. If, in a case where the control unit has the monitoring execution authority, the monitoring capability information does not satisfy predetermined information, then the control unit delegates the monitoring execution authority to another control unit whose monitoring capability information does satisfy the predetermined information.

There are provided an image forming apparatus which implements divisional control using a plurality of control units without an increase in cost and a control method for the apparatus. To accomplish this, this image forming apparatus includes a master control unit that controls the overall image forming apparatus, a plurality of sub-master control units that control a plurality of functions for performing image formation, and a plurality of salve control units that control loads for implementing a plurality of functions. The master control unit is connected to the plurality of sub-master control units via first signal lines. The plurality of sub-master control units are connected to the plurality of slave control units via second signal lines higher in data transfer timing accuracy than the first signal lines.

Image forming apparatus implemented by a distributed control system

There is provided an image forming apparatus which adopts a distributed control system and suppresses generation of radiation noise without increasing the cost. To accomplish this, the image forming apparatus includes a master control unit that controls the overall image forming apparatus, a plurality of sub-master control units that control a plurality of functions for performing image formation, and a plurality of salve control units that control loads for implementing a plurality of functions. The image forming apparatus performs distributed control. The image forming apparatus determines the operating frequencies of the salve control units in accordance with loads controlled by the salve control units. The image forming apparatus compares the operating frequencies of the slave control units. Based on the comparison result, the image forming apparatus changes the operating frequency of a slave control unit that is equal to the operating frequency of another slave control unit.

Provided is an image forming apparatus that realizes a distributed control system with a reduced number of power lines, and that has highly reliable power supply and an effective power saving mode. To accomplish this, the image forming apparatus employs a distributed control system including a master CPU, a plurality of sub master CPUs, and a plurality of slave CPUs. The master CPU supplies 5-V power to the sub master CPUs and the slave CPUs in the power saving mode, and supplies 24-V power thereto in a normal mode. Also, the sub master CPUs determine the operating mode in accordance with the level of the supplied power voltage, and operate accordingly.

There is provided an image forming apparatus which adopts a distributed control system and increases the error detection accuracy of each control unit. To accomplish this, the image forming apparatus includes a master control unit that controls the overall image forming apparatus, a plurality of sub-master control units that control a plurality of functions for performing image formation, and a plurality of slave control units that control loads for implementing a plurality of functions. The master control unit determines a diagnosis path for performing a diagnosis process for an error using the signal lines and a connection bridge connected to the respective control units. The master control unit performs the diagnosis process for an error in accordance with the determined diagnosis path.

A first lower layer control unit controls a conveyance unit, that conveys the medium in a first conveyance section of a conveyance path. A second lower layer control unit controls a conveyance unit, that conveys the medium in a second conveyance section located downstream of the first conveyance section. An upper layer control unit determines whether the medium is at a position where both the first lower layer control unit and the second lower layer control unit engage with conveyance control of the medium, instructs the first lower layer control unit and the second lower layer control unit to operate in synchronization with each other when the medium is at the position, and instructs the second lower layer control unit to operate asynchronously to the first lower layer control unit when the medium is not at the position.

Medium conveyance apparatus which adopts distributed control system

This invention provides an image forming apparatus capable of preventing image omission caused by registration error correction, a control method therefor, and a program. Error amount information is acquired which is stored in a storage medium and represents the error amount of the scanning line of exposure light in the exposure scanning direction on an image carrier. The image data is modified on the basis of the acquired error amount information. A masked area for restricting the output position of an image visualized on the printing medium is modified on the basis of the modification amount of the modified image data.

Image forming apparatus, control method, and program for preventing image omission cause by registration error correction

A data storage apparatus includes a data storage unit to store data, a plurality of buffer units to output data to the data storage unit through a bus that includes a plurality of signal lines, the plurality of buffer units being provided on the plurality of signal lines, a determination unit to determine whether the bus is in an operating state in which transmission and reception of data to and from the data storage unit are performed, a reference voltage supply unit to supply a predetermined reference voltage to the plurality of signal lines, a control unit to control, in a case where the determination unit determines that a state of the bus is changed from an operating state to a nonoperating state, the plurality of buffer units to switch output states to predetermined output states to reduce an amount of electric current flowing in the bus.

Method and apparatus for reducing current flow in bus in nonoperating state

A buffer memory has a plurality of blocks which are virtually broken up into a matrix pattern. An image processing apparatus has a memory controller for writing R, G, and B image data in the buffer memory in units of lines and in a predetermined color order, and reading out the R, G, and B image data written in the buffer memory. The memory controller switches operation for writing the R, G, and B image data in the blocks that belong to corresponding rows, and operation for writing the R, G, and B image data in the blocks that belong to corresponding columns in units of lines, and reads out old image data from a region of the buffer memory in which new image data are expected to be overwritten before the new image data are overwritten by the write operation.

Image processing apparatus and method

An apparatus for controlling a stepping motor used in feeding a sheet, for example, in a facsimile device, includes a driving unit for driving a stepping motor, and an controller for controlling the drive unit, depending upon drive conditions of the stepping motor, to control at least one of the excitation method and the drive current of the stepping motor, thereby suppressing the generation of heat upon stopping of the motor, and stabilizing the rotation thereof.

Growing community of inventors

Moriya, Japan

Atsushi Otani