Abstract: A combinational circuit comprises: a plurality of multipliers, independently performing two or more multiplications for coded digital signals in a Galois extension field GF(2m) (m is an integer equal to or greater than 2), wherein the multipliers include an input side XOR calculator, an AND calculator, and an output side XOR calculator, and wherein the multipliers share the input side XOR calculator. Further, according to the present invention, these multipliers each include an adder connected between an AND calculator and an output side XOR calculator, wherein the output side XOR calculator is used in common, and wherein the outputs of the AND calculators in the multipliers are added by the adders, and the addition results are calculated by the output side XOR calculator that is used in common.

Abstract: A decoding circuit used to correct an error in a digital signal includes: an input unit for entering coded digital signals ID in parallel in accordance with the number of interleaved codes; a processor including an error locator polynomial calculator and an error value polynomial calculator for processing data obtained serially from the interleaved codes that are received by the input unit; and an output unit for correcting errors by employing the output data that are received from the processor and the digital signals ID, and for outputting in parallel the obtained digital signals OD, for which an error has been corrected by a linear calculation on a Galois field, in accordance with the number of interleaved codes.

Abstract: Provided is a communication device which executes proper communications by correcting communication errors caused by noise generated on a transmission line or the like.

Abstract: A heat meltable ink image-receiving sheet used in a melting type thermal transfer method, comprising a sheet substrate and a porous ink-receiving layer, comprising a resin formed on at least one side of the sheet substrate, the porous ink-receiving layer having a thickness of 3 to 50 &mgr;m and a water vapor permeability (JIS L 1099) of not less than 300 g/(m2·hour) and less than 1,000 g/(m2·hour).

Abstract: A combinational circuit comprises: a plurality of multipliers, independently performing two or more multiplications for coded digital signals in a Galois extension field GF(2m) (m is an integer equal to or greater than 2), wherein the multipliers include an input side XOR calculator, an AND calculator, and an output side XOR calculator, and wherein the multipliers share the input side XOR calculator. Further, according to the present invention, these multipliers each include an adder connected between an AND calculator and an output side XOR calculator, wherein the output side XOR calculator is used in common, and wherein the outputs of the AND calculators in the multipliers are added by the adders, and the addition results are calculated by the output side XOR calculator that is used in common.

Abstract: A color image-forming method, comprising the steps of: using a transfer sheet comprising a foundation, a release layer and a colored ink layer stacked in this order on one side of the foundation wherein the release layer is capable of being fused or softened by heat at the time of a thermal transferring process and the colored ink layer is incapable of being softened by heat at the time of the thermal transferring process; and an image receiving body having at least a surface layer capable of being fused or softened by heat at the time of the thermal transferring process, superposing the colored ink layer of the transfer sheet onto the image receiving body and heating the transfer sheet/image receiving body from the transfer sheet side to form a color image on the image receiving body.

Abstract: A decoding circuit used to correct an error in a digital signal comprises: an input unit for entering coded digital signals ID in parallel in accordance with the number of interleaved codes; a processor including an error locator polynomial calculator and an error value polynomial calculator for processing data obtained serially from the interleaved codes that are received by the input unit; and an output unit for correcting errors by employing the output data that are received from the processor and the digital signals ID, and for outputting in parallel the obtained digital signals OD, for which an error has been corrected by a linear calculation on a Galois field, in accordance with the number of interleaved codes.

Abstract: A signal processing method for a digital signal comprising the steps of: establishing a Yule-Walker equation having the following form by using a matrix that includes, as components, the elements of a Galois field GF(2m), and a vector that includes, as components, the elements of the Galois field GF(2m) 1 ( S 0 S 1 ⋯ S l - 1 S 1 S 2 ⋯ S l ⋮   ⋰ ⋮ S l - 1 S l ⋯ S 2 ⁢ l - 2 ) ⁢ ( Λ l ( l ) ⋮ ⋮ Λ 1 ( l ) ) = ( S l ⋮ ⋮ S 2 ⁢ l - 1 ) ;

Abstract: An ink image-receiving sheet for use in a method of forming an image, comprising an ink-receiving layer having a porous structure formed according to a wet-solidification method, the ink-receiving layer comprising a binder resin and aragonite-type calcium carbonate as main components, and a method of forming an image using the ink image-receiving sheet.

Abstract: A heat meltable ink image-receiving sheet used in a melting type thermal transfer method, comprising a sheet substrate and a porous ink-receiving layer comprising a resin formed on at least one side of the sheet substrate, the porous ink-receiving layer having a thickness of 3 to 50 &mgr;m and a water vapor permeability (JIS L 1099) of not less than 300 g/(m2·hour) and less than 1,000 g/(m2·hour).

Abstract: A printer control system including a pulse signal output unit for generating a pulse signal having periods including adjacent high and low levels in a number proportional to movement amount of a carriage; a period calculation unit detecting each rising and falling edge of the pulse signal and thereupon calculating a duration of a most recent period directly prior to a detected one of the rising and falling edges; a print period calculation unit uniformly dividing each received duration by a predetermined number corresponding to the print resolution of the printer to determine a print period for each received duration; and print timing determination unit determining a plurality of first print timings based on a first print period calculated by the print period calculation unit dividing duration of a period directly prior to one of a rising and falling edge of each successive pair of rising and falling edges, and determining a plurality of second print timings based on a first print period calculated by the pri

Abstract: A printer has a carriage drive control arrangement. A first control portion is provided for controlling ink ejection of a print head. A second control portion is provided for controlling a feed motor for driving a platen. A carriage mounts thereon the print head and is provided movably along a paper on the platen. A carriage control circuit is provided for controlling a carriage drive motor. A photosensors are connected to the carriage control circuit. The photosensors produce and transmit pulse signals to the carriage control circuit where moving distance and moving velocity of the carriage are computed based on the pulse signals. A second control portion transmit data of interrupt command output conditions to the carriage control circuit, the conditions being preset moving distance and preset moving velocity. If the computed distance or velocity is coincident with the preset distance or velocity, an interrupt command signal is transmitted from the carriage control circuit to the second control portion.

Abstract: A heat-sensitive transfer recording medium is disclosed which comprises a support having thereon a first ink layer and a second ink layer provided on the first ink layer, the first ink layer comprising a coloring agent and an epoxy resin, the second ink layer comprising a coloring agent and a polyester resin. The heat-sensitive transfer recording medium is advantageously used to form a printed image excellent in both scratch resistance and alcohol resistance on an image receptor comprising a polyester film or an image receptor comprising a substrate having thereon an image-receiving layer comprising a polyester resin.

Abstract: The variation is the moving speed of a carriage, mainly due to the variation of the mass of the carriage with the consumption of ink, is corrected every printing cycle to enhance the accuracy of printing. PWM values for an acceleration period and a constant-speed period are examined to see if the PWM values are appropriate every printing cycle. A moving speed in the present acceleration period is compared with a first desired moving speed. When the moving speed is lower than the first desired moving speed, the PWM value is incremented by 1 to increase the duty factor of a PWM signal to be given to a CR motor in the next acceleration period. A maximum and a minimum moving speed are measured in the present constant-speed period, the maximum and the minimum moving speed are compared with a second desired traveling speed, or a maximum and a minimum allowable moving speed, and a PWM value for the next constant-speed period is determined on the basis of the comparison.

Abstract: A thermal transfer sheet is provided which comprises: a foundation; a recording agent layer provided on one side of the foundation; and a back layer provided on the other side of the foundation and containing a binder resin and a charge-transfer complex; wherein the charge-transfer complex comprises an electrically conductive organic polymer serving as an electron donor and an electron acceptor; and wherein the back layer has a surface resistivity of not greater than 10.sup.11 .OMEGA./cm.sup.2.