Hyundai Electronics Ind. Co., Ltd.

Hyundai Electronics Industries

Jun M Kim

Jin San Park

Seung H Park

A method and apparatus for separating picture image areas in facsimile machines, scanners, and other picture processing equipment, and more particularly to a method and apparatus for separating picture regions by extracting features of graphic image and characters includes a vertical contouring circuit for producing vertical contour data by combining vertical components of an original picture and binary picture data; a horizontal contouring circuit for producing horizontal contour data from horizontal components of the binary picture data; a logic combiner for combining outputs from the vertical and horizontal contouring circuits and a halftone picture; a mode discriminator for selecting between a binary picture and contouring mode; an image area separator for separating image areas with an output from the logic combiner and a halftone picture, and a counter for executing pixel counting from a halftone picture to determine the probability of the presence of a character.

Method and apparatus for generating an image areas using halftone

The invention disclosed relates to a facsimile transmission/reception method and apparatus using a common bus in an office automation system, and in detail to a facsimile transmission/reception method and apparatus using a single common bus for transmitting and receiving data and control signals to be interfaced with the outer devices. The apparatus comprises a decoding means 31 being applied with a scanning output data chip selection signal CS1 and a liquid crystal display chip selection signal CS2 for decoding a corresponding selection output signal, a selection output means 34,35 controlled by a first and second storage means 32 and 33 latching data, control signals and the like and the decoding means for selectively outputting the data latched by the first and the second storage means, and a common bus 37 for transmitting the data outputted by the selection output means to the operation panel unit 40. Accordingly, use of a common bus for the data, control signals or the like applied from the external devices will reduce the number of signal lines, enhancing capability of miniaturization of the equipment and adoption of measures against radiative interferences.

Facsimile transmission/reception method and apparatus using a common bus

An image processing apparatus useful in, for example, FAX machines, for processing a binary or multiple level tone data in an image including a switch for selectively outputting either a binary level or the multiple level tone pattern in accordance with a selection signal the state of which is determined by the interline reading interval times while scanning the image on an original document. The image processing apparatus includes a temporary storage register for storing a digital binary or multiple level tone pattern, and a selection switch controlled by a binary/multiple level tone selection signal for selectively coupling to the maximum voltage reference input of an analog-digital converter an output signal either from a background color compensator when the binary/multiple level tone selection signal indicates binary level tone image processing is occurring or a voltage value established by a first voltage divider whose resistor values are predetermined according to output voltage levels from the image sensor during multiple level tone image scanning. The digital-analog converter converts binary or multi-level tone pattern data output from temporary storage register into an analog signal using a minimum voltage reference established by a second voltage divider which has resistor values selected in accordance with the minimum output levels from the image sensor. The analog signal from the digital-analog converter is converted to a voltage and compared in a comparison calculator to generate digital data representing the scanned image.

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Kyeongki-do, South Korea

Jun M Kim