Abstract: Multiple page image information is communicated efficiently in such a manner that a receiver informs to a transmitter an amount of data receivable one time, the transmitter transmits one time up to the designated data amount (which may be multiple page information), the receiver informs the amount of data next receivable and indicates an error frame received in the previous transmission, and the transmitter transmits the image information of the designated error frame followed by the transmission one time of the succeeding image information up to the designated data amount.

Abstract: In a digital full color copying machine, one pixel on a photoconductor is divided into four subdivided small pixels. Functions a-d are assigned to each subdivided small pixel. Functions a-d are linear functions with density data as a parameter. The slope of functions a-d becomes smaller in sequential order. Exposure data of the four subdivided small pixels is calculated according to the density data of a pixel and functions a-d to expose each subdivided small pixel. A peak can be established in the exposure amount distribution to form a deeper latent image. Accordingly, resolution and graininess of the halftone area are improved.

Abstract: An image analyzing apparatus includes a display for displaying an image and an image analyzer including a profile data producing section for producing profile data corresponding to a profile of density in a region specified by a figure formed at a desired position in the image displayed on the display, a noise level data producing section for producing noise level data indicating a level of noise contained in the profile, and a peak recognizing section for smoothing the profile data in accordance with the noise level data and producing peak data regarding peaks contained in the profile based on the smoothed profile data. The display is constituted so as to be able to display the profile. According to the thus constituted image analyzing apparatus, it is possible to automatically and properly recognize peaks in a profile irrespective of noise contained in the image.

Abstract: A method of operating a fax server apparatus including a computer and a FAX card which provides a unification of a FAX forms creation process and the creation of a template used for interpreting received FAX forms completed at a remote branch location. A FAX form is created using a forms creation module and subsequently both stored into memory as a template and selectively transmitted via a FAX card to FAX machines at remote branch locations. The FAX form has machine readable identification markings comprised of an unique dot pattern which are identified upon reception by the computer to retrieve from memory the corresponding form stored as the template for processing. The FAX form also includes machine readable reference marks recognized by the computer for orientating the received completed FAX form and correcting for distortions induced by electronic transmission of forms such as skewing and warping of images.

Abstract: An apparatus for printing video images is disclosed. First the percentage of backlighting or people in the image is detected. That is, the probability of the presence of backlighting or people is detected. Then, the density gradation table is modified based on the detection result, and the presence of backlighting or the presence of people in the image is evaluated based on optical information, to select the best density gradation table from among plural density gradation tables, or to synthesize the best density gradation table. A luminance table is generated using the optimized density gradation table, and gradation correction of the image is then accomplished using that luminance table.

Abstract: Apparatus for scanning an image comprising a manually-operated scanning device with a photoelectric source and having a light tunnel extending from the photoelectric source to a side of the manually-operated scanning device. The scanning device with light tunnels offers high contrast edges and encourages proper alignment of the image being scanned. In one embodiment, the scanning device has a light tunnel extending from each vertical side corresponding to and illuminating the horizontal axis to be scanned. In another embodiment, the scanning device has, in addition to light tunnels illuminating the horizontal axis, light tunnels extending from the front or horizontal side of the scanning device to illuminate the vertical boundary that is scanned by the scanning device. The light tunnels in the invention provide the user with a highly visible reference of exactly where the manually-operated scanning device's scan window is located at a particular instance.

Abstract: A facsimile apparatus includes a transmission motor (90), and when an original to be transmitted is moved by the transmission motor in a sub-scanning direction, sequential lines in the sub-scanning direction are scanned by a contact image sensor (100) in a main scanning direction, and therefore, image data of a black dot or a white dot is outputted by the contact image sensor. A microcomputer (60) specifies a line in which a black dot outputted from the contact image sensor first exists as a start line, and specifies an area on the basis of the start line and an end line which is determined by a fact that three white lines in which no black dots are detected appear after the start line. Addressing information is recognized on the basis of the image data outputted from the contact image sensor which is scanning the area.

Abstract: When images on the front and rear sides of multiple originals are reduced in size and recorded onto both sides of a single recording sheet in composite form, recording positions of images on the front and rear sides of each original are determined such that reduced images on the front side of the original are recorded on the front side of the recording sheet and reduced images on the rear side of the same original are recorded at corresponding positions on the rear side of the recording sheet. As a result, when the recording sheet is cut into pieces corresponding to respective recorded images, images on the front and rear sides of each cut piece of the recording sheet respectively agree with images on the front and rear sides of each original.

Abstract: An improved apparatus for reducing memory usage of look-up table mapping in an imaging system, a method related to the apparatus is also disclosed. The apparatus receives a digital input signal and processes it through a two-step mapping procedures instead of conventional skill that it uses only one look-up table, each procedure provides a series of mapping outputs. A comparing unit composed of a lot of logical gates is then comparing those mappings with original input signal and choosing the best one for preparing a final output. Finally, a final output corresponding to the best choice is providing for displaying.

Abstract: An image having suitable color-tone and density is formed on a recording medium so that a full-color image of an excellent color-tone depending on a OHP can be projected, wherein a CCD separates colors of an original image to read it for converting into a RGB digital signal by an A/D conversion circuit, the process corresponding to a required image signal forming condition is executed by image process means for the digital signal to generate an image signal for outputting it to an LD driver, and a full-color image forming apparatus for forming a color image on a recording medium utilizing plural kinds of color materials based on the image signal comprises the image processing means for executing a gradation conversion process for the signals of C, M and Y in a LUT 1 circuit and executing a different gradation conversion process for a black signal Bk in a LUT 2 circuit different from a LUT 1 circuit.

Abstract: The detection of a nearest neighbor is calculated at high speed and with high accuracy. Feature space grouping is performed, with one, or two or more features being assigned to each group. A check is performed to determine whether or not a calculated distance value that is acquired before the limits for a group is reached has exceeded the threshold value THR.sub.-- MIX for each group. The threshold value that is set for THR.sub.-- MIX is the average of the threshold value that is determined based on the cumulative quantity of the features that is acquired and the threshold value that is based on the number of dimensions. When the distance value for each group is greater than the threshold value THR.sub.-- MIX, first phase screening is performed to exclude, from the succeeding distance calculations, the prototype that provides that distance value. Then, for a group for which the first phase screening is performed, the threshold value THR.sub.

Abstract: The present invention readily produces an image of a special color separation, with respect to a color image which is to be reproduced by a plurality of color separations including Y, M, and C separations. The method first specifies a relationship between a predetermined density of a special color separation and densities of a plurality of other color separations corresponding to the predetermined density of the special color separation; then extracts each color element included in a color image as a target color element; and determines a density of the special color separation according to the specified relationship.

Abstract: An image processing apparatus transmits image data to a communication partner by selectively using one of a first transmission mode and a second transmission mode. The apparatus has a display unit that displays first image information representing the communication partner and second image information representing a communication state. In the first transmission mode, the first image information is displayed independently from the second image information such that the second image information does not overlap the first image information and such that the first image information is not included in the second image information. In the second transmission mode, the second image information is displayed such that the first image information is included in a part of the second image information.

Abstract: In a color communication method and apparatus, a desired standard format is designated from among predetermined standard formats on the transmitting side, and the designating information is transmitted to the receiving side along with color image data. As a result, a standard format is read out of a standard-format memory in dependence upon the receiving designating information, this standard format is combined with the color image data and the resulting combination of format and image data is delivered as an output.

Abstract: A facsimile apparatus having a printer interface and a recorder unit usable as a printer, includes an image memory for storing facsimile image data received during an operation as the printer, a key switch for switching an operation mode between a facsimile mode and a printer mode by a switching operation, and a controller for automatically causing the recorder unit to perform an output operation such that the image data stored in the image memory in the printer mode is read out to print received image information by the switching operation of the key switch to the facsimile mode when the facsimile image data is received in the printer mode.

Abstract: In a variable length code processor or image processor for encoding data to be coded into a variable length code corresponding to its run length and level, and decoding a variable length code to be decoded into a corresponding run length and level, there are provided a first memory for storing a variable length coding table which outputs a variable length code using its run length and level as input, a first shifter which applies a bit shift to the variable length code output by the first memory based on its length, a second memory for storing a variable length decoding table which outputs a run length and level using a variable length code as input, and a second shifter which applies a bit shift to the variable length code to be decoded based on the length of the variable length code decoded on the immediately preceding occasion, and supplies it to the second memory as input.

Abstract: A data inputting device for inputting data to a computer, word processor or data image processor is disclosed. The device has a single inputting unit capable of selectively inputting coordinates or an image. Further, the inputting unit is capable of inputting an image on the basis of absolute coordinates representative of positions on a document.

Abstract: A technique for embodying self-diagnosis in a facsimile machine including a printer with a recording element for receiving or scanning data and a temperature sensor for sensing a surface temperature of the recording element is performed by sensing an input voltage corresponding to the changed surface temperature of the recording element when a preset number of lines of a document are printed, comparing a reference voltage received when the recording element is not driven with the surface temperature sensed in the sensing step, and providing an error message when the sensed voltage is the same as the reference voltage. Thus, the printing or transmitting is performed only when accurate data is received or scanned, while the printing or transmitting by the successive reception or scanning of white data or black data, being error data, is blocked to prevent unnecessary power dissipation and the waste of recording paper.

Abstract: A detecting unit generates defference data between optical black level of digital input data and a predetermined black level and generates .gamma. characteristics selection signal. An offset signal obtained from the difference is added to the input data by an adding circuit. A .gamma. characteristics setting unit is supplied with the difference data and the output signal of the adding circuit and outputs a signal in which a white level, black level and .gamma. characteristics are corrected.

Abstract: In a color-image processing apparatus and method, density data for a plurality of colors are input, and density correction is performed for each of the input density data for the plurality of colors while switching a plurality of correction tables having different density correction characteristics at predetermined periods.