Canon Kabushiki Kaisha

Fujitsu Corporation

Kabushiki Kaisha Toshiba

Jun Itoh

Yasuhiro Nishikawa

Yoshihiro Watanabe

Yoshiharu Kato

Satoshi Kakuma

Masami Murayama

Shiro Uriu

Takashi Hatano

Yoshihiro Uchida

Kenichi Okabe

Mikio Nakayama

Yasuhiro Aso

Jin Abe

Naoyuki Izawa

Eiji Ishioka

Noriko Samejima

Hiroshi Nishida

Shigeru Sekine

Satoshi Esaka

Miyuki Kawataka

Yoshiyuki Karakawa

Fumio Hirase

Shinichi Araya

Nobuyuki Tsutsui

Hiromi Yamanaka

Yoshihisa Tsuruta

Atsushi Kagawa

Atsuko Suzuki

Shouji Kohira

Naoki Tsuchitoi

Masaaki Kato

Yuichiro Shibuya

Hirotomo Yasuoka

Keiko Higashi

Yasusi Kobayasi

Hideo Kuriyama

Yasusi Kobayashi

An image forming apparatus that reads a print position adjustment chart using an auto document feeder (ADF) and specifies an appropriate image reading size to include paper edges of the chart is provided.

Image forming apparatus to perform reading operation in image size of image greater than size of sheet on which predetermined pattern is formed, control method thereof, and non-transitory computer-readable storage medium

An object is to appropriately control a fixing process while making an attempt to increase speed by improving the PPM in an electrophotographic image forming apparatus. In the electrophotographic image forming apparatus, the control unit decompresses compressed quantized raster image data in units of pages. Then, the control unit derives an image feature quantity from decompressed raster image data in units of pages and notifies the printing unit of the derived image feature quantity. Then, the control unit transfers the decompressed raster image data to the printing unit in units of pages in response to an image transfer request from the printing unit. The printing unit sets a parameter relating to a fixing process in the printing processing based on the notified image feature quantity. Then, the printing unit performs the printing processing in accordance with the set parameter for the decompressed raster image data received from the control unit.

Image forming apparatus, control method, and storage medium for improving throughput in an electrophotographic image forming apparatus

An image processing apparatus according to this embodiment performs, based on a job setting, conversion of a pixel value of a partial region in an input original image into a predetermined value on image data of the original image, as needed. Subsequently, this image processing apparatus generates a histogram representing the density signal distribution of the image data of the original image or the converted image data. Note that if the above-described conversion is performed, this image processing apparatus corrects the generated histogram by subtracting, from a count of the predetermined number of the generated histogram, the number of sampling points counted in the above-described partial region when the histogram is generated.

Image processing apparatus, method for controlling the same, and computer-readable storage medium

An image forming apparatus having a hardware configuration for counting the amount of toner used for an image to be printed for each color component uses a conversion coefficient used for processing for converting a pixel value in image data expressing the image into a signal value indicating the amount of toner to convert the pixel value into the signal value. The image forming apparatus outputs information indicating whether or not a high-density image portion is included in an image based on the signal value obtained by performing the conversion.

Image forming apparatus configured to determine whether image data includes pixel having a value larger than a predetermined value

No chase control is performed in copying utilizing ACS (auto color select) determination processing. ACS determination is performed to determine whether image data is color or black-and-white image data and the chase control is performed after the ACS determination is completed.

Copier and method in which print processing proceeds prior to storing all read image data exceeding predetermined size when ACS is selected

Since, for detecting a two-dimension code added to a document, the detection processing is performed by checking the four corners of the read image, if the user specifies an A3 size as a reading size of an image in the copy of an A4-size document, the two-dimensional code is not detected. When the document size detected by the copying machine differs from the reading size of the image specified by the user, the processing for the two-dimensional code detection is performed checking the four corners of the region of the document size detected by the copying machine.

Apparatus with capability of detecting two-dimensional code

By using a memory capable of storing image data of a document size smaller than a maximum document size, images on both sides of a document of the maximum document size can be simultaneously read.

Image processing apparatus, control method, and program product notifying controller of tentative and detected document size conveyed in reader

An image output apparatus includes a determination unit configured to determine whether a density of a document image exceeds a threshold, and a control unit configured to inhibit an output of a composite image including a two-dimensional bar code and the document image if the determination unit determines that the density exceeds the threshold and configured to output the composite image including the two-dimensional bar code and the document image if the determination unit determines that the density does not exceed the threshold.

Image output method and apparatus with a control unit inhibits output of composite image including two-dimensional bar code and document image, if density of the document image exceeds threshold

When a program consisting of a plurality of processes is installed in a device, its processing route in the case where the processes normally advance is built as a database, based on the knowledge of a program designer or the like. When the program is executed, routing information indicating the actual process flow along each process flow is generated. Before a new process is activated, the route till then is compared with the correct route stored in the database. If the route till then is abnormal, it is determined that the device is infected with a worm, and the communication port of a device in which the program is installed is cut off and the maintenance terminal is notified of the abnormality.

Worm infection detecting device

The present invention provides a communication device capable of providing a highly reliable service by detecting communication abnormality at a high speed. The communication device comprises a link configuring unit configuring a plurality of logical links between a opposite communication device, a segmenting unit segmenting transmission data as being associated with each of the plurality of logical links, a transmission unit transmitting the segmented data via the logical link associated with this segmented data, a receiving unit receiving the data via each of the plurality of logical links, and an abnormality detection unit judging, within a predetermined period of time since the data were received via any one of the plurality of logical links, if the data are not received via at least one of the remaining logical links, at least one logical link to be an abnormal logical link.

Communication device and logical link abnormality detection method

A switch station including an ATM switch; a memory storing control data for operations of the switch station; an intra-station device, accommodating a subscriber line, performing communication operation on subscriber ATM cell; a control processor generating control information in link access protocol (LAP) format; and an interface unit converting LAP control information into ATM cell to the intra-station device through the ATM switch, wherein the control information is communicated according to LAP, the intra-station device receives the control information and transmits a direct memory access request to obtain control data stored in the memory, the interface unit obtains and converts the data format of the control data into ATM cell to transmit to the intra-station device through the switch, and the intra-station device performs the communication operation on the subscriber ATM cell based on the control data received through the switch.

Intra-station control system for connectionless communications system

In an ATM switched network having an ATM switching system which accommodates originating and terminating subscribers, a method and equipment is disclosed to solve a problem produced when connecting between communication equipment according to protocols because of the differences of protocol versions applied within the network. To transit quality declaration data in a ATM network, the ATM switching system therein includes the steps of determining QoS (quality of service) correction principle for adjusting the differences between subscriber protocols respectively supporting an originating subscriber and a terminating subscriber, generating quality control information using the QoS correction principle, performing connection admission control and usage parameter control based on generated quality control information, and transmitting quality control information to the terminating subscriber.

Method for transferring quality declaration data in an ATM network

For example, a communication service controlling exchange apparatus ( ) which can control a condition of a communication service to be provided includes call control memories ( - to -M) individually provided for paths between user terminals. User terminal registration information of those user terminals which can enjoy a communication service of a desired form is registered in the call control memories ( - to -M), and a communication service providing section ( ) for linking the call control memories ( - to -M) with each other so that a communication service of the desired form can be provided is formed. A link changing control section ( ) for changing the mutually linked condition of the pertinent ones of the call control memories ( - to -M) is provided in order to allow form changing to a communication service of a different form. Consequently. communication services of a plurality of kinds of forms can be provided by the single exchange apparatus ( ).

Switching system

An ATM switch including a switch unit routing an ATM through an ATM connection; a controller controlling the quality of the ATM connection; and a memory for storing a quality control identifier for linking declared information concerning ATM connection quality, which is included in a call signal requesting the setup of the ATM connection, with a capability identifier for identifying the capability of the controller. The controller controls the ATM connection quality based on the capability corresponding to the capability identifier designated based on the quality control identifier obtained from the declared information. If the quality requested in the declared information is changed due to a change in an advisory promulgated by an advisory organization, a different capability identifier can be assigned by changing or adding to the setup of the quality control identifier in accordance with the updated quality.

ATM switch and quality control method for an ATM connection

The present invention provides an ATM switch which includes: memory for storing identification information which identifies user-network interfaces with terminals, analysis control data for analyzing a call control signal for each user-network interface, and editing control data for editing a call control signal for each user-network interface; analysis circuit for analyzing a first call control signal in accordance with the analysis control data corresponding to a first user-network interface identified on the basis of the identification information when the first call control signal is received from a first terminal for setup with a second terminal; call control circuit for performing call control based on the first call control signal analyzed by the analysis circuit; and editing circuit for editing the first call control signal to a second call control signal in accordance with the editing control data corresponding to a second user-network interface identified on the basis of the identification information. Preferably, ATM switch further includes interworking control circuit for controlling call process when an error is detected while the second call control signal is being edited.

Growing community of inventors

Yokohama, Japan

Jun Itoh