Canon Kabushiki Kaisha

Yoji Kaneko

Katsutoshi Hisada

Satoshi Nagata

Akihiro Nakamura

Susumu Sugiura

Junichi Kimizuka

Yoshinobu Mita

Makoto Takaoka

Kentaro Matsumoto

Shigeru Ueda

Shigetada Kobayashi

Shinichiro Maekawa

Junichi Shishizuka

Mitsumasa Sugiyama

Yutaka Tokura

Hiroyuki Nakanishi

Soya Endo

Masaki Unishi

Hitoshi Machino

Yoichi Toyokura

Tomoyuki Haganuma

Toyokazu Uda

Yukari Shimomura

Satoshi Egawa

Akira Nakaya

Takashi Takeda

Yukihiko Ogata

Yoshio Yoshiura

Kosuke Kunishi

Atsushi Amakasu

If an optional paper feeding deck or furnisher, or paper stacker, is connected to an image forming apparatus (such as a printer), such optional devices are to be controlled by connecting the paper conveyance control apparatus to control those options. Such an image forming apparatus has a video controller to convert the printer language sent from a high-order device such as a host computer, into a bit map data and a printer engine to print the bit map data. Such a paper conveyance control apparatus, being electrically connected to the video controller, has a memory to be shared with the video controller. The video controller writes the job schedule in the shared memory. The paper conveyance control apparatus controls the optional device according to the written job schedule.

Apparatus to control optional paper conveyance device and image processing apparatus using the same

If an optional paper feeding deck or furnisher, or paper stacker, is connected to an image forming apparatus (such as a printer), such optional devices are to be controlled by connecting the paper conveyance control apparatus to control those options. Such an image forming apparatus has a video controller to convert the printer language sent from a high-order device such as a host computer, into bit map data and a printer engine to print the bit map data. Such a paper conveyance control apparatus, being electrically connected to the video controller, has a memory to be shared with the video controller. The video controller writes the job schedule in the shared memory. The paper conveyance control apparatus controls the optional device according to the written job schedule.

A facsimile apparatus receives standardized video signal, and is capable of transmitting an original image signal read by a scanner and a standardized video image signal in a communication and also capable of easily and rapidly transmitting said video image signal together with the facsimile image.

Facsimile apparatus for receiving and transmitting standardized video

The invention concerns a color image communication apparatus, which comprises scan conversion means for converting n-level image data received in a raster scan system via a communication line to data in a shuttle scan system, multi-level conversion means for converting color n-level data obtained from the scan conversion means for multi-level data, and color conversion means for converting color characteristics of multi-level data obtained from the multi-level conversion means from color characteristics for a communication line to color characteristics of output color recording means. The invention also concerns a color image communication apparatus, which comprises means for generating shuttle system color signal, color conversion means for converting the color signal to signal matched to standard color characteristics for a communication line, n-level conversion means for converting the converted color signal from the color conversion means to n-level signal, and means for performing data scan conversion of the n-level data from shuttle scan system to raster scan system and sending out the raster scan system n-level data to the communication line.

Color image communication apparatus and method having two modes

A facsimile apparatus capable of transmitting color image and monochromatic image comprises:

Color facsimile apparatus which selectively displays an image indicated

A facsimile apparatus which is connected to the ISDN having a plurality of information channels comprises: a receiving circuit to receive image data and voice data which were sent from a partner apparatus; memories for storing the image data and the voice data which were received by the receiving circuit; an instructing circuit to instruct the output of the image data stored in the memory; and an output device for outputting the image data and the voice data stored in the memories in accordance with the instruction of the instructing circuit. The receiving circuit can simultaneously receive both of the image and voice data as a pair by using the two information channels of the ISDN.

Facsimile apparatus

A color image communication apparatus can switch between a copy mode and a communication mode. In the communication mode, color space standardization conversion of objective color image data is performed, while in the copying mode, color space standardization conversion of the objective image data is not performed.

Color image communication apparatus and method

In a color facsimile apparatus, a color scanner converts an original image into color image data, and a transmitter transmits the color image data in either a color transmission mode or a monochromatic transmission mode. A processor processes the color image data as processed color image data or processed monochrome image data according to the transmission mode of the transmitter. The data is displayed on a monitor, prior to transmission, in a first mode as a monochrome image and in a second mode as a color image.

Image transmitting apparatus for transmitting color image data in a

It is provided an image communication apparatus which comprises multi-level generation section for generating multi-level data from received image data, color conversion section for color-converting the multi-level data from the multi-level generation section, and setting section for setting a single color mode, in which the received image data is dealt with as single color data irrespective of the color conversion section, when it is determined by communication protocol that the communication mode is the single color mode, so as to ensure satisfactory communication even with a single color image.

There is disclosed a color facsimile apparatus capable of communication of a color image, utilizing plural colorants in the printing unit, wherein, when one of the colorants runs out in the printing unit, such colorant is replaced by another colorant and the image printout is conducted with a varied resolution, for example with a reduced image size, in order that the operator can immediately recognize the absence of the colorant.

Color facsimile apparatus which warns of colorant aromalies

A facsimile and a facsimile system are connected to an inside bus of an ISDN (integrated services digital network). When trouble, such as no toner, jam, no paper or the like, has occurred in a recording unit of a first facsimile apparatus on the inside bus, the first facsimile apparatus issues an announcement of interruption onto the bus. A second facsimile apparatus on the above-described bus monitors a signal on the bus. When the second facsimile has detected the announcement of interruption, it performs substituting reception in place of the first facsimile apparatus. It is thereby possible to maintain the continuation of communication even if trouble has occurred during reception and recording.

Facsimile apparatus and facsimile system

A data communication apparatus includes a reader, a mode change unit, a GIII facsimile controller connected to a telephone line, a GIV facsimile controller connected to a data line, and a printer. The mode change unit includes a mode change controller, a dummy reader, a dummy printer, resolution converters, and switches. The mode change controller connects the GIII or GIV facsimile controller to the reader and the printer. The facsimile controller which is not connected to the reader and the printer is connected to the dummy reader and the dummy printer. The resolution converters convert resolutions of the data so as to match a source apparatus with a destination apparatus.

Data communication apparatus

A facsimile apparatus has a CCU for receiving image data, a decoder for decoding received data, an image memory for storing the decoded data, a CPU for controlling send/receive operation, and a printer for printing received data. High-speed data communication can be performed using a small-capacity memory and a digital transmission line and without data loss.

An encoding apparatus of the invention includes a multiplexer for converting serial input video data into 8-bit parallel video data, a counter for counting a run length of the serial input video data so as to generate its count as 6-bit parallel data, a detection circuit for detecting a variability point of the input video data, a mode control circuit for selecting the parallel output from the multiplexer or the counter in accordance with the content of the input video data, and a shift register for storing the parallel output selected by the mode control circuit. Meanwhile, a decoding apparatus of the invention includes a mode determination circuit for determining the content of the code data representing the video data or run length data, and counters for counting code data representing the video data or the run length data, respectively. The code data includes mode data representing the content thereof, and the mode determination circuit determines the content of the code data in accordance with the mode data.

Growing community of inventors

Yokohama, Japan

Yoji Kaneko