Abstract: A document processing apparatus that is adapted to the state of document data to be processed and performs document processing at low cost and efficiently. When document data comes over a communication line, a communication section receives the same to pass the received document data to a storage location selector. If the total size and the number of documents received are less than the predetermined values, the storage location selector transfers the document data to a part of the main memory. If the storage location selector cannot transfer the document data to that part, the storage location selector transfers the document data to one of auxiliary memories. The document data stored in one auxiliary memory is read by the CPU to be processed by the same and an image processor. The results of the document processing are stored in the main memory to be transferred to an output unit over an input/output interface 10 to be recorded.

Abstract: An image reading apparatus compensates inter-deviations of and a change in a color temperature of a light source while compensating a difference in the sensitivities between linear image sensors and a change in the sensitivity difference. Three linear image sensors for R, G and B of a multi-line linear image sensor read white reference image data, and a line memory stores the image data. A CPU controls an output state of each second timing signal within a timing generator line by line and independently of a first timing signal, in such a manner that peak values of the white reference image data for three lines stored in the line memory each belong to a predetermined appropriate range. This optimizes a charge accumulating time within each linear image sensor, whereby an RGB balance becomes even at an output side of each linear image sensor.

Abstract: An image forming apparatus which stores image data of an image of each page of an original document into a memory and then outputs the image data stored in the memory in order of pages of the original document to record the corresponding image on a recording medium for producing a requested number of sets of copies of the original document. A controller determines, each time after image data for one page of the original document is stored in the memory, whether or not the memory will overflow if image data of a next page of the original document is stored in the memory. The controller prohibits reading of an image of the next page of the original document when it determines that the memory will overflow.

Abstract: An image transmission control method for a facsimile apparatus reduces procedures before and after the sending of an image signal to require less time for the transmission of the image signal, thus improving a network utilization efficiency. The transmission side, when receiving a CED signal transmitted from the reception side, sends a particular tone signal to reduce the procedures before and after the sending of an image signal. NSF, NSS, EOP and MCF signals are communicated between the transmission side and the reception side at a high rate. These signals have a shorter preamble. A suitable communication rate is determined based on the results of learning by use of the previous communication rate and an internally provided model. Whether the reduced procedures are used is also determined from transmission conditions.

Abstract: A facsimile machine including an image retrieval unit for retrieving image data from an image of a document; a retrieval buffer memory for temporarily storing the image data retrieved by the image retrieval unit; an encoder for producing encoded data by encoding the image data stored in the retrieval buffer memory; a memory for storing the encoded data when the encoded data is not immediately transmitted after being encoded by the encoder; a transmission buffer for temporarily storing the encoded data before transmission of a facsimile transmission; and a buffer memory usage switching unit for switching use of the retrieval buffer memory and the transmission buffer so that the transmission buffer memory is used as a portion of the retrieval buffer memory when the encoder processes the image data for storage as encoded data in the memory.

Abstract: An apparatus for sequentially transmitting a plurality of multipage documents via a facsimile includes an optical scanner, an optical character recognition apparatus, and a feature recognizer apparatus. The present apparatus allows hands-free transmittal of several multipage documents by automatically determining from the document's cover sheet the values of operating parameters, such as the telephone numbers of destination facsimile machines and the number of pages in the document to transmit. Human intervention is not required to dial phone numbers or separate documents that are to be transmitted to different destinations. Moreover, the present apparatus allows for direct transmittal of copies to those persons indicated in the document to receive the same without the need to know the other recipients of the document.

Abstract: A method of correcting one or more defect pixels in a defect region of a source image, which image has both the defect pixels and non-defect pixels each of which is represented by at least one defect pixel signal and non-defect pixel signal, respectively. The method comprises:a) searching for edges in a non-defect region of the image adjacent to the defect region by: (i) comparing relative pixel parameters in the non-defect region with a predetermined tolerance to locate a sequence of pixels representing an edge segment the members of which have relative parameters within the tolerance and which sequence is within a predetermined distance of the defect region; and (ii) comparing the length of an edge segment with a minimum length to identify as an edge a segment with at least the minimum length;b) generating at least one pixel signal for the defect region based on the signal of at least one non-defect pixel lying in a direction from the defect pixel which is determined by the direction of an edge.

Abstract: An optical scanner including a light emitting device which emits an image-reading light toward an original having an original image thereon, such that the image-reading light scans the original by irradiating each of a plurality of positions on the original at a corresponding one of a plurality of times, and a light detecting device which detects the image-reading light reflected from the original and thereby reads the original image thereon, the light detecting device including a plurality of light detecting elements each of which is associated with at least a part of the original and detects the image-reading light reflected from the part of the original, the part of the original including a plurality of positions on the original.

Abstract: An information reading device which has no need for mechanically moving a document or its reading portion and which is reliable to read information by using its two-dimensional reading system. A sensor panel is formed of first-layer striped electrodes made of material having high transmissivity and formed on a transparent substrate, a striped amorphous silicone layer laid with stripes disposed orthogonal to the first striped electrodes on the transparent substrate and second-layer striped electrodes made of material having a low transmissivity and formed over the striped amorphous-silicone layer. Photoelectric cells are formed one at each intersection of the first layer electrodes and the second layer electrodes. A thin flat type light source is placed on the bottom surface of the sensor panel and tightly fixed thereto.

Abstract: In a manifold apparatus having a plurality of functions including a printer function, facsimile function and copier function, facsimile data from a host computer are transferred to a system controller via a printer controller. Information on the destinations for facsimile communication are registered at an image memory. The system controller searches the image memory on the basis of destination data contained in the facsimile data, thereby determining whether the destination has a G3 function or a G4 function. If the destination has a G3 function, the system controller transforms the facsimile data to image data and transmits the image data via a facsimile controller. If a G4 function is available at the destination, the system controller transmits the facsimile data, or code data, without transforming them.

Abstract: A facsimile machine according to the present invention includes a memory forming a plurality of mailboxes; reception unit for receiving DTMF signals inputted over a telephone circuit from a remote device during an answering machine mode of the facsimile machine; access permission unit for allowing, when the reception unit receives input of a mailbox indication signal and a password signal corresponding to one of the plurality of mailboxes, access to the mailbox; data existence determination unit for determining whether data is stored in the mailbox when the reception unit receives input of the password signal; and telephone circuit opening unit for forcibly interrupting the telephone circuit when the data existence determination unit determines that no data is stored in the mailbox.

Abstract: A compact and efficiently designed facsimile device that is capable of performing transmission, reception, and duplication functions. The efficiency is brought about by using only one stepping motor to drive all the functions of the facsimile apparatus. The mode selection is accomplished by separating either the thermosensitive recording head or the scanner away from the white roller when a particular mode of operation does not require their use. This is accomplished by placing eccentric cams on the same axle as said white roller and on both sides of said white roller. During duplication, both the thermosensitive recording head and the sensor are in contact with the white roller. During transmission or reception mode, the eccentric cams are rotated so that the thermosensitive recording head and the sensor respectively are pushed away from the white roller by the apogees of both cams.

Abstract: The invention relates to a device for correcting the tone of color pictures recorded by a video camera, in particular an endoscope camera. A control device works in combination with a preferably triangular keyboard so that a free tone correction of the three ground colors of the video picture may be effected independently of the color temperature of the recorded object, i.e. in particular, independently of the light source employed. The switching surface is in the form of a surface PAD keyboard which allows the evaluation of the location of a finger tip or likewise at any position on the triangle, and thus represents a very effective input medium for the tone correction according to the invention. A similarly provided automatic white balancing function permits the white point of the camera color space to lie in the surface center of the surface PAD keyboard.

Abstract: An information processing system comprises a core, and a sub-unit (for example, a facsimile unit, a file unit, and a computer interface unit, a formater or an image memory) connected to the core, and the core and the sub-unit are connected by two types of buses, synchronous type and asynchronous type. Where the data transfer between the core and the sub-unit is to be effected through the asynchronous bus, the core may simultaneously transfer data to another sub-unit by using the synchronous bus. Where the data transfer between the core and the sub-unit is to be effected by the synchronous bus, the data may be parallelly transferred to a plurality of sub-units.

Abstract: In a digital copier which allow the quality of an output image to be adjusted in a plurality of levels, a scanner reads a document image and generates corresponding image data. An analog-to-digital converter transforms the image data to a pixel-by-pixel electric signal. The electric signal is written to an image memory. An image processing section reads a particular portion of the image (e.g. one-fifth in the subscanning direction) out of the memory repeatedly, while changing density each time. The results of such processing are sent to a recording section and printed on a single paper as a combined image. As a result, partial images representative of a particular density each are printed on a single paper. This not only promotes easy evaluation but also saves papers.

Abstract: An image processing system includes a first image processing apparatus connected to a second image processing apparatus Each apparatus includes a programmable data compressor that performs image data compression in accordance with at least two data compression programs. The first image processing apparatus is able to request the second image processing apparatus to transmit to it a compression program stored by said second processing apparatus, which the first image processing apparatus may then use in its own data compressor.

Abstract: The fractal image compression device of the present invention contemplates a control unit for dividing a composite image into a plurality of range blocks and a plurality of domain blocks, classifying the range blocks and domain blocks into several classes according to their respective attributes, and controlling an overall operation of the device. A page memory stores image data received from an external source, and provides output of the image data via control of the control unit. A domain block memory receives first pixel data within the domain blocks from the page memory, and stores the first pixel data via control of the control unit. A range block memory receives second pixel data within the range blocks from the page memory, and stores the second pixel data via control of the control unit.

Abstract: An object of the invention is to provide a communication apparatus connected to a plurality of circuits in which recording paper on which received image data is printed is discharged to discharge trays which are individually provided for the respective circuits, so that the discharged sheets of recording paper are easily classified. A communication apparatus used individually in connection with a plurality of circuits is constituted so that received image data is printed on recording paper and is discharged to trays which are individually provided for the respective circuits. Specifically, when the printing of the image data is instructed, the tray number which is allowed to correspond to the reference circuit identification information memorized in the table for the tray selection which coincides with the circuit identification information memorized in the control table of the received information of the parameter memory part.

Abstract: An optical communication system for a printer includes an infrared light emitting diode for emitting a radiation for transmitting a printing data, an infrared receiver for receiving the printing data transmitted with the radiation, a printer body to which the printing data is supplied through the infrared receiver, a microcomputer for detecting a state of data transmission of the printing data, an indicator light emitting diode for indicating the state of transmission in accordance with the microcomputer so that the state of printing data transmission is visible to a user.

Abstract: Layout analysis is used in operating a digital reproduction apparatus. The device automatically segments the digital image dot data corresponding to a document image to be reproduced, to determine layout elements of the document. This is shown on a display. An operator can now select a specific layout element, such as a text column, by indicating it, and instruct the image processing unit of the apparatus to process only that element. The processing operations include color printing, gradation changing, moving and enlargement/reduction.