Canon Kabushiki Kaisha

Canon Denshi Kabushiki Kaisha

Hisashi Sakamaki

Katsuichi Shimizu

Hiroyuki Hattori

Shigehiro Komori

Koichi Miyamoto

Kazumi Umezawa

Toshihide Iida

Shunichi Masuda

Tsuneki Inuzuka

Toshiaki Yagasaki

Masahiro Tomosada

Yoshimasa Kimura

Toshio Honma

Katsushi Furuichi

Kenji Kurita

Osamu Sawamura

Katsuyoshi Maeshima

Yutaka Komiya

Masao Hosaka

Koichi Murakami

Katsumi Murakami

Yoshihiro Kawatsura

Tetsuji Tachika

Masato Ishida

Toshiyuki Ohtani

Naoto Kawamura

Hiroshi Tanioka

Takashi Kitamura

Kazutoshi Shimada

Yoshifumi Okamoto

Hiroshi Nitanda

Masao Ariga

Kazuo Kawakubo

Yoshitomo Goshima

Ikuo Souma

Ahimusa Uchida

Takashi Yotsuyanagi

Sumihiko Arima

Seigi Nagasawa

Kouichi Mochizuki

Kiyoyuki Hattori

Katsuichi Smimizu

A main server and a mirror server hold the same content. A server switching apparatus sets only one of the web servers to be active. In the case where the mirror server has not been attacked in an immediately-previous operating period, the server switching apparatus switches from the main server to the mirror server. Upon receiving a request from a client computer, the server switching apparatus transfers the request to the active web server. The active web server then sends the requested content.

Apparatus for switching between multiple servers in a web-based system

Configuration information representing the configuration elements of a client PC or the like on a network is compared with initial configuration information. When the configuration information changes, it is determined whether the configuration is proper. If the configuration is improper, the function of a corresponding configuration element to the network is inhibited. This can prevent an unstable state of the system, leakage of information, and a decrease in reliability of the network system upon a change in network configuration.

Network management apparatus, management server, client terminal, and control method thereof

An image forming system comprises means for image forming program modules one for each task and a plurality of monitor means for controlling a program. A predetermined one of the monitor means divides the program modules into blocks in accordance with a control mode, controls the blocks and controls the program in cooperation with the plurality of monitor means.

Data processing apparatus which operates in a plurality of operation

A control device for an image forming apparatus with plural loads includes plural execution units for executing plural processes in accordance with at least one of a plurality of programs stored in the program memory, a monitor unit for controlling an image forming sequence and monitoring process operations of plural control execution units in accordance with at least one plurality of programs, an input unit for inputting data required for the operations of the plural control execution units, a system bus to which the system execution units in the monitor access, and a memory unit, contents of which can be read out and written in by the plural execution units and monitor unit, wherein the monitor unit and the plural control execution unit access a system bus in a time-divisional manner such that the monitor unit and the plural control execution unit is prepared to be operated in turn, and the monitor unit selects fewer of the execution units when a task to be allocated requires faster processing and wherein the monitor unit determines the task to be executed in the image forming sequence, identifies an idle control execution unit and allocates the determined task to the idle control execution unit for execution.

Control device for image forming apparatus

An image processing system includes a plurality of memories for storing (1) a procedure control program and (2) a task program for automatic closed loop control. Each program is grouped into a plurality of groups of programs in response to one of a plurality of selectable stages corresponding to priority required to execute an image processing. Each group of programs is task scheduled and one of the stages is selected. The task schedule is controlled in response to the selected stage and the group of programs is supervised corresponding to the selected stage.

Image forming system with task scheduling and executing back on program

A printing or copying apparatus of a type provided with a recording medium, operable device for forming an image on the recording medium, device for operating a first signal required for the timing operation of the operable device, keys for instructing to start or stop the execution of image formation, first control device controlling the operable device in accordance with the first signal, and which comprises a memory for storing a program for operation control of the operable device for image formation, and second control device for controlling the first control device in accordance with the key instructing device for controlling the execution of image formation and for controlling at least one of the operable devices, and which comprises a memory for storing a program for operation control of the first control device.

Image forming device

An image processing apparatus having various interrupt-handling capabilities when image formation is interrupted. In one aspect, image formation is interrupted after completion of a predetermined number of image formations when the size of a recording material is indicated as a first size, and image formation is interrupted after a completion of a predetermined number of image formations when a recording material is indicated as a second size. In another aspect, a condition for image formation is selected whereby in the case the selected condition is prevented (e.g., recording on wrong-sized paper), the condition is stored, and after the image formation has commenced, a stop command is inhibited and stored. In another aspect, data concerning image information is entered, the entered data is displayed, and images are formed sequentially in accordance with the data whereby the formation of the images may be interrupted and the remaining number of image formations may be stored and displayed. It is also possible to interrupt the image formation for a predetermined image formation count without entry by the operator.

Image forming apparatus with image forming interruption capabilities

An image processing apparatus including an image processing unit, computer controller with a memory for storing a program for controlling the processing unit, clock pulse generator for executing the stored computer control program and a divider for dividing the generated clock pulses. The computer controller also receives and counts the clock pulses divided by the divider and controls the processing sequence in accordance with the count.

Image forming process control method and apparatus

An image forming apparatus includes an image forming unit for forming an image on a recording medium, a command unit for commanding image forming conditions, a first switch for connecting a power source to the apparatus, a first director for detecting an operational position of the first switch, a second switch for enabling the first switch to connect the power source to the apparatus, a second detector for detecting an operational position of the second switch, and a memory having microprograms stored therein for operatively controlling loads on the image forming unit. The operation of the image forming unit is controlled by signals derived from the first and second detectors and the microprograms.

Image forming apparatus

An image forming apparatus having a device for setting numerical data related to image formation; a memory device for storing the numerical data set by the setting device; a device for executing the image formation in accordance with the numerical data stored in the memory device; a device for cancelling the numerical data stored in the memory device; and a device for inhibiting numerical data from being set by the setting device during an improper operational state of the apparatus.

Malfunction display and operation inhibiting device for an image forming

An image forming apparatus capable of interrupting a copying operation for a priority copying operation includes a first key for entering a desired number of copies, a second key for causing the start of a copying operation, a third key for interrupting a first copying operation initiated in accordance with operation of the first and second keys in order to enable a second or priority copying operation, a fourth key for stopping the first copying operation and control circuitry responsive to the various key operations. Operation of the third key to interrupt a copying operation causes a memory to store the number of repetitions needed to complete the first copying operation. The memory also stores the number of copies for the second copying operation upon operation of the first key after operation of the third key prior to the start of the first copying operation. Operation of the second key after completion of the second copying operation completes or commences the first copying operation. When the fourth key is operated during the priority copying operation, the first copying operation is resumed. The copying operation in progress when a malfunction occurs is resumed after the malfunction is corrected.

Copy apparatus having a priority copy interrupt and malfunction

A reproduction apparatus has a reader for reading an original image by photoelectric conversion and a character generator in which image information from said reader and image information from said character generator are synthesized.

Reproduction apparatus

Growing community of inventors

Yokohama, Japan

Hisashi Sakamaki