Abstract:
PROBLEM TO BE SOLVED: To enable the accurate detection of the fraudulence using illegal gadgets capable of depressing the stop buttons of game machine at fixed timings without impairing amusing potentialities. SOLUTION: This fraudulence detector for the game machines measures the interval information up to the depression of a second stop button P2 from the depression of a first stop button P1 and the interval information up to the depression of a third stop button from the depression of the second stop button P2 to store these pieces of interval information as one cycle of timing information into a timing information memory circuit 7 at least covering two cycles, and compare the newest and the preceding cycle of timing information to output fraudulence signal showing the fraudulence done against the game machines involved when the same timing information runs over a prescribed frequency of cycle. This enables the detection of the fraudulence alone such as those as depressing the individual stop buttons at the fixed timings using the illegal gadgets except for the case where the timing information is the same accidentally. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a variable gain amplifier circuit which is used with a low power source voltage, generating little noise inside the circuit. SOLUTION: A MOS transistor 35 is connected between the sources of MOS transistors 33, 34 constituting a differential amplifier circuit. A DC bias voltage for operating the MOS transistor 35 in a nonsaturation area is applied onto the gate of the MOS transistor 35. When the output voltage of the variable gain amplifier circuit 30 is increased, a control voltage to reduce resistance between the source and drain of the MOS transistor 35 is given, so as to reduce the gain of an AM intermediate frequency variable gain amplifier circuit 30. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a pen-type portable telephone which can also be used as a writing utensil, and to effectively use its surface. SOLUTION: A keyboard 9 in which operation keys are arranged on a line in the longitudinal direction of a cylindrical housing 1 at a position other than a grip 1a, held by users when the cylindrical housing 1 is used as the writing utensil, so that an area of an operating key of the key board 9 can be made large, and further by arranging the operation keys on a line, a large space can also be ensured for display 3. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a mixer circuit capable of improving the quality of an output mixed signal. SOLUTION: This mixer circuit is constructed of a CMOS transistor (800) in which a p-channel MOS transistor (840A) and an n-channel MOS transistor (840B) are combined. The CMOS transistor (800) has semiconductor substrates (810A, 810) having at least two crystal planes, and a gate insulating film (820A) formed on at least two of the crystal planes on the semiconductor substrates. The channel width of a channel formed in the semiconductor substrate along the gate insulating film is given by a total sum of respective channel widths of the channels formed for the at least two crystal planes, respectively. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an MIS transistor in which increase of element area is suppressed, width of a channel is increased and electrical characteristics of the channel are not deteriorated. SOLUTION: The MIS transistor being fabricated in a semiconductor substrate (702) comprises the semiconductor substrate (702) constituting a protrusion (704) having at least two different crystal faces on the surface for the major surface, a gate insulating film (708) covering the at least two different crystal faces constituting the surface of the protrusion at least partially, a gate electrode (706) formed, respectively, for the at least two different crystal faces constituting the surface of the protrusion through the gate insulating film, and identical conductivity type diffusion regions (710a, 710b) formed in the protrusion while facing the at least two different crystal faces, respectively, on the opposite sides of the gate electrode. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To fetch a signal from a receiving circuit according to the processing speed of a processor. SOLUTION: A decoder selector 22 decodes parallel data obtained by converting serial data transmitted from a CPU 12, and selects one of signals showing the decision result of a received field strength deciding circuit 23, a plurality of decision results of an intermediate frequency deciding circuit 24 and the decision result of a stereo deciding circuit 25 based on the decode result, and outputs it from an output port 26 to an external CPU 12. Thus, it is possible for the CPU 12 to fetch the signal outputted from the output port 26 of a semiconductor integrated circuit 13 according to the processing speed. COPYRIGHT: (C)2004,JPO&NCIPI