Ricoh Company, Ltd.

Shigeru Miyake

Hitoshi Yamamoto

Tomio Nakaya

A sorting apparatus comprises a data memory for storing a plurality of data, each of the data comprising reference data indicating a predetermined reference level, a sorting memory for writing therein data based on the plurality of data and a control unit for sorting the plurality of data in sequence of the reference levels of the plurality of data. The control unit also writes data to the sorting memory so that addresses of the plurality of data are obtained in the sequence of the reference levels of the plurality of data by tracing data written in the sorting memory by repeated reading of data in the sorting memory by a unit in which each data has information about a respective address of a next data to be read.

Sorting apparatus and method for sorting data in sequence of reference

An image processing apparatus especially suitable for image processing operations such as enlarging, reducing, rotating and scrolling avoids use of a second video memory. The image processing device comprises a memory having memory elements for storing picture element data of a video information which describes an original image, an operation circuit for receiving a start address where a read operation is to start within the memory and a predetermined data indicative of a difference between the start address and a next address where the read operation is to be made, and for calculating the next address from the start address data and the predetermined data, a reading circuit for reading the picture element data which is stored in the memory at the next address calculated by the operation circuit, and an output circuit for outputting the picture element data read by the reading circuit. The picture element data output from the output circuit describe at least a portion of the original image subjected to a predetermined image processing operation.

Image processing apparatus

An apparatus for correcting the quantity of light from an optical printer arranged a plural number of luminous elements therein, which comprises a producing circuit for producing a plural number of timing signals of different pulse widths and output timing, and a combining circuit for combining the timing signals according to the correcting data, thereby driving the respective luminous elements based on a correcting signal obtained by combination thereof.

Apparatus for correcting quantity of light from optical printer

A trimmable semiconductor device includes a plurality of capacitors or resistors, each of which has a predetermined value, and a plurality of programmable switches each of which is operatively associated with the corresponding one of the plurality of capacitors or resistors. All of the capacitors or resistors and the programmable switches are fabricated internally and thus on the same chip or substrate. Thus, when the plurality of programmable switches are selectively programmed, the corresponding ones of the plurality of capacitors or resistors are selected and thus connected to a circuit formed on the substrate, thereby carrying out required adjustments electrically.

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Kobe, Japan

Shigeru Miyake