Olivetti Tecnost S.p.a.

Gianpiero Bianco

Walter Cerutti

This invention relates to a device for converting bit strings from a first resolution to a second resolution suitable for application, in particular, on peripherals such as printers, scanners or facsimile machines. The device comprises a source register in which a string of bits to be converted is stored by a CPU , a destination register from which the CPU extracts the converted string, and a pair of control registers and which cooperate for converting bit by bit the bit strings from the source register to the destination register . The control registers and , the source register and the destination register operate independently from the CPU used and at a clock rate (clk ) greater than that (clk ) of the CPU , thereby permitting extremely fast conversion times.

Bit string conversion device

This invention relates to an electronic device, for a fax machine in particular, comprising controlling means ( ) capable of associating compression codes or code words with strings of source information in accordance with a first processing speed, and storing means, for example shift registers ( ) capable of appending the code words to one another so as to form blocks of compressed information, in accordance with a second processing speed, greater than the first. The device is also capable of &ldquo;extracting&rdquo; the single code words from blocks of compressed information at this second processing speed. By way of the technique of using different processing speeds, the device makes it possible to obtain total speeds of compression and/or decompression of the information respectively to be transmitted and/or received much greater than those obtainable up to now with the known devices.

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Ivrea, Italy

Gianpiero Bianco