Inventor: Kenichi Kawasaki

Address: Kawasaki, JP
No. of patents: 22
Last patent issue date: 06/05/2012

Number	Title	Issue Date
8193855	Semiconductor device and power control method used for same A semiconductor device includes an internal circuit; a plurality of power switches arranged in parallel configured to supply a current to the internal circuit; an instruction circuit configured to output a instruction signal for controlling power supply to the inter...	06/05/2012
8046609	Semiconductor device A semiconductor device includes a plurality of circuits each independently conducting a predetermined process, and a circuit operation control part controlling operation start timings and operation suspend timings so as to mutually interfere with power voltage fluct...	10/25/2011
8013625	Semiconductor device A first power-cutoff switch is disposed between a power line and an internal power line dedicated for a circuit block, and has a current supply capacity having the level at which ON-current can protect an external examination environment. A second power-cutoff switc...	09/06/2011
8004302	Semiconductor device including switch for coupling power line A semiconductor device whose operational state is switched between a test state and a normal operational state according to a logical value of a signal input from the outside is provided. The semiconductor device includes a first power line, a second power line, a s...	08/23/2011
7911825	Multi-port memory based on DRAM core A semiconductor memory device includes a plurality of N external ports, each of which receives commands, and an internal circuit which performs at least N access operations during a minimum interval of the commands that are input into one of the external ports. ...	03/22/2011
7902914	Semiconductor integrated circuit A semiconductor integrated circuit includes a core circuit, a power supply switch situated on a path providing a current to the core circuit and configured to control a state of current supply to the core circuit in response to a control signal applied to a control ...	03/08/2011
7851948	Semiconductor device A semiconductor device includes that a first power line supplied with first power supply voltage, a second power line supplied with second power supply voltage, a third power line electrically connected to a internal circuit; a first switch configured to electricall...	12/14/2010
7847622	Electric circuit device An electric circuit device includes: a power supply line; a load circuit; a current supply controller which compares a voltage of the power supply line with a certain voltage; and a current supply circuit which supplies a electric current from the power supply line ...	12/07/2010
7298188	Timing adjustment circuit and memory controller A circuit for timing adjustment includes a PLL circuit configured to generate a phase-adjusted clock signal in response to phase comparison between an input clock signal and a delayed clock signal, a feedback path configured to delay the phase-adjusted clock signal ...	11/20/2007
7120761	Multi-port memory based on DRAM core A semiconductor memory device includes a plurality of N external ports, each of which receives commands, and an internal circuit which performs at least N access operations during a minimum interval of the commands that are input into one of the external ports. ...	10/10/2006
6774655	Semiconductor device, method of testing the semiconductor device, and semiconductor integrated circuit A semiconductor device mounted on a board or the like and having a test circuit, having the function of carrying out a contact test at a low cost on the terminals of the semiconductor, is disclosed. The semiconductor device comprises a terminal test circuit for test...	08/10/2004
6771108	Input circuit and semiconductor integrated circuit having the input circuit An input circuit has an input buffer and a detection circuit. The input buffer receives an external signal and outputs an internal signal. The detection circuit detects whether or not the external signal is provided. The input buffer outputs the internal signal when...	08/03/2004
6621283	Semiconductor device, method of testing the semiconductor device, and semiconductor integrated circuit A semiconductor device mounted on a board or the like and having a test circuit, having the function of carrying out a contact test at a low cost on the terminals of the semiconductor, is disclosed. The semiconductor device comprises a terminal test circu...	09/16/2003
6594770	Semiconductor integrated circuit device A semiconductor integrated circuit device includes a power-down generating circuit which generates a power-down control signal in response to a power-down signal externally supplied, a clock generating circuit which receives an external clock for generati...	07/15/2003
6522182	Integrated circuit device incorporating DLL circuit In the present invention, an external power source supplied to an integrated circuit device is divided into a first external power source for the DLL circuit and a second external power source for circuits other than the DLL circuit. According to the pres...	02/18/2003
6498524	Input/output data synchronizing device Disclosed is a semiconductor device for outputting an output signal with a given phase held relative to an external clock despite a difference in characteristic, a change in temperature, and a fluctuation in supply voltage. The semiconductor device compri...	12/24/2002
6433607	Input circuit and semiconductor integrated circuit having the input circuit An input circuit has an input buffer and a detection circuit. The input buffer receives an external signal and outputs an internal signal. The detection circuit detects whether or not the external signal is provided. The input buffer outputs the internal ...	08/13/2002
6298004	Semiconductor device, semiconductor system, and digital delay circuit Disclosed is a semiconductor device for outputting an output signal with a given phase held relative to an external clock despite a difference in characteristic, a change in temperature, and a fluctuation in supply voltage. The semiconductor device compri...	10/02/2001
6066969	Semiconductor device with DLL circuit avoiding excessive power consumption A semiconductor device includes a variable-delay circuit which delays an input-clock signal to generate a delay clock signal, a clock-control circuit which selects one of the input-clock signal and the delayed clock signal, an output circuit which outputs...	05/23/2000
5955904	Semiconductor integrated circuit with appropriate data output timing and reduced power consumption A semiconductor integrated circuit includes a first clock-input circuit receiving an external clock from an external source and outputting an internal clock, an output-control-clock generating circuit receiving the internal clock to generate an output-con...	09/21/1999
5909142	Semiconductor integrated circuit device having burn-in test capability and method for using the same A semiconductor integrated circuit device includes a flat-range voltage supply unit which steps down an external power supply voltage and generates a resultant, flat-range voltage, and a burn-in voltage supply unit which generates a burn-in voltage depend...	06/01/1999
5670909	Semiconductor device having a boosting circuit A semiconductor device includes a boost circuit and a boost control circuit, wherein the boost control circuit comprises a first transistor connected to a load for outputting a boost voltage supplied thereto from a boost circuit to the load, a second tran...	09/23/1997

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Inventor: Kenichi Kawasaki