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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Uragami; Akira
Address:
Takasaki, JP
No. of patents:
25
Patents:












Patent Number Title Of Patent Date Issued
6266200 Magnetic disk storage apparatus July 24, 2001
A magnetic disk storage apparatus having a magnetic disk-type storage medium; a head for reading data recorded on the magnetic disk-type storage medium, a processor, a phase synchronizing circuit having a controllable response characteristic and for outputting a clock signal to handle th
5999353 Magnetic disk storage apparatus with phase sync circuit having controllable response characteris December 7, 1999
A magnetic disk storage apparatus provides with a phase locked loop or a phase sync circuit including a phase comparator, a charge pump, a filter and a voltage-controlled oscillator. The phase sync circuit includes a register which is connected to an information processing system and
5673058 One-chip semiconductor integrated circuit device capable of outputting analog color signal or di September 30, 1997
A semiconductor device (CPLT) of the invention comprises a first terminal (R) to which analog data is to be supplied, a digital/analog converter (DAC1) with its output coupled to the first terminal, a second terminal (R'0) to which digital data is to be supplied, a digital output circuit
5633766 Magnetic disk storage apparatus with phase sync circuit having controllable response characteris May 27, 1997
A magnetic disk storage apparatus provides with a phase locked loop or a phase sync circuit including a phase comparator, a charge pump, a filter and a voltage-controlled oscillator. The phase sync circuit includes a register which is connected to an information processing system and
5515068 One-chip semiconductor integrated circuit device capable of outputting analog color signal or di May 7, 1996
A semiconductor device (CPLT) of the invention comprises a first terminal (R) to which analog data is to be supplied, a digital/analog converter (DAC1) with its output coupled to the first terminal, a second terminal (R'0) to which digital data is to be supplied, a digital output circuit
5512847 BiCMOS tri-state output driver April 30, 1996
In an input level converter for TTL--CMOS level conversion (or other conversion to CMOS) for an internal logic block operating with CMOS levels, an output transistor for executing the charge or discharge of the output capacitance thereof is formed of a bipolar transistor. Thus, the p
5475715 Sync data introduction method and system December 12, 1995
A data device for introducing the data read from a recording medium includes first creation device for receiving a read code signal corresponding to the data stored on a data recording medium to create first two phase signals which repeat inversion with a substantially equal period t
5404250 Magnetic disk storage apparatus with phase sync circuit having controllable response characteris April 4, 1995
A magnetic disk storage apparatus provides with a phase locked loop or a phase sync circuit including a phase comparator, a charge pump, a filter and a voltage-controlled oscillator. The phase sync circuit includes a register which is connected to an information processing system and
5398047 Semiconductor integrated circuit device including high-speed operating circuit and low-speed ope March 14, 1995
The semiconductor integrated circuit device formed on one semiconductor substrate employs a plurality of first and second circuit blocks constituting functions of the same kind. The first and second circuit blocks, however, are implemented with respectively different types of circuit
5377136 Semiconductor integrated circuit device with built-in memory circuit group December 27, 1994
A semiconductor integrated circuit device with a built-in memory circuit group is disclosed, wherein wiring is started from a data terminal position near a data exchange portion of a memory circuit group to reduce the length of a wiring. Accordingly, an operation speed can be improved by
5265045 Semiconductor integrated circuit device with built-in memory circuit group November 23, 1993
A semiconductor integrated circuit device with a built-in memory circuit group is disclosed, wherein wiring is started from a data terminal position near a data exchange portion of a memory circuit group to reduce the length of a wiring. Accordingly, an operation speed can be improved by
5245224 Level conversion circuitry for a semiconductor integrated circuit September 14, 1993
In an input level converter for TTL-CMOS level conversion (or other conversion to CMOS) for an internal logic block operating with CMOS levels, an output transistor for executing the charge or discharge of the output capacitance thereof is formed of a bipolar transistor. Thus, the pr
5157354 Phase-locked loop IC having ECL buffers October 20, 1992
A phase locked loop IC comprising a voltage controlled oscillator which generates a clock signal in accordance with a control voltage, a first ECL input buffer which is an input buffer for a signal to be synchronized, a phase-lock capture circuit for producing a current determinative of
5103120 Level conversion circuitry for a semiconductor integrated circuit April 7, 1992
In an input level converter for TTL - CMOS level conversion (or other conversion to CMOS) for an internal logic block operating with CMOS levels, an output transistor for executing the charge or discharge of the output capacitance thereof is formed of a bipolar transistor. Thus, the
5062011 Address mark generating method and its circuit in a data memory October 29, 1991
When data are memorized in a 2-7 RLL code on a disc shaped memorizing medium using a sector format, as an address mark in each sector a 2-7 illegal pattern is used; a 1-byte data "8B" in an NRZ signal is converted into a 2-7 RLL code, and further it is modified into the 2-7 illegal p
5053909 Semiconductor integrated circuit device October 1, 1991
Disclosed is a semiconductor integrated circuit device equipped with a buffer portion which includes a pair of an input buffer portion and an output buffer portion. When an input circuit equipped with an input protection circuit is formed at the input buffer portion, circuit elements
5053644 Semiconductor integrated circuit October 1, 1991
A semiconductor integrated circuit is so designed that it is possible to form any one of the three different kinds of circuit configuration, that is, an inverter circuit, a Schmitt circuit and a common-mode circuit, as desired, by employing circuit elements prepared in advance and by cha
4983862 Semiconductor integrated circuit with a bi-MOS input circuit for providing input signals to an i January 8, 1991
In an input level converter for TTL - CMOS level conversion (or other conversion to CMOS) for an internal logic block operating with CMOS levels, an output transistor for executing the charge or discharge of the output capacitance thereof is formed of a bipolar transistor. Thus, the
4827368 Semiconductor integrated circuit device May 2, 1989
A semiconductor integrated circuit device is provided which is equipped with a buffer portion which includes a pair of an input buffer portion and an output buffer portion. When an input circuit equipped with an input protection circuit is formed at the input buffer portion, circuit elem
4710842 Semiconductor integrated circuit device December 1, 1987
A semiconductor integrated circuit device is provided which is equipped with a buffer portion which includes a pair of an input buffer portion and an output buffer portion. When an input circuit equipped with an input protection circuit is formed at the corresponding input buffer portion
4694203 High speed bi-comos switching circuit September 15, 1987
A bipolar/CMOS mixed type switching circuit comprising two npn-type bipolar transistors Q.sub.1, Q.sub.2 that are connected in the form of a totem pole in the output stage, a CMOS inverter and an NMOSFET M.sub.3 for driving these transistors in a complementary manner, and resistance mean
4689503 Level conversion circuitry for a semiconductor integrated circuit utilizing bis CMOS circuit ele August 25, 1987
In an input level converter for TTL-CMOS level conversion (or other conversion to CMOS) for an internal logic block operating with CMOS levels, an output transistor for executing the charge or discharge of the output capacitance thereof is formed of a bipolar transistor. Thus, the pr
4683384 Integrated circuit having input and output drivers cascaded between I/O pads and internal circui July 28, 1987
An integrated circuit having the circuit construction wherein a plurality of each of input and output circuits are formed in such a manner as to form pairs and to correspond to a plurality of external connection pads, respectively, and are used selectively to replace the function of an
4678943 Inverting logic buffer BICMOS switching circuit using an enabling switch for three-state operati July 7, 1987
A switching circuit comprises a pre-stage circuit coupled to receive an input signal and an output stage, wherein an output signal having a phase opposite to that of a signal of an input terminal IN can be obtained from an output terminal OUT of the output stage. The pre-stage circuit in
4645951 Semiconductor integrated circuit having a C-MOS internal logic block and an output buffer for pr February 24, 1987
A semiconductor integrated circuit is provided which combines an MOS internal logic circuit (C-MOS in the preferred embodiment) with input and output buffers which have pin-compatibility with ECL circuitry. An ECL-CMOS level-conversion input buffer circuit arranged for a C-MOS intern










 
 
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