Inventor
MATSUMOTO HIDEKAZU
JP13 patents
Patents
13 patentsUS4454578AJun 12, 1984
Data processing unit with pipelined operands
HITACHI LTD158 citations99
US4839846AJun 13, 1989
Apparatus for performing floating point arithmetic operations and rounding the result thereof
HITACHI LTD91 citations96
US4811269AMar 7, 1989
Bit slice multiplication circuit
HITACHI LTD95 citations96
US4481573ANov 6, 1984
Shared virtual address translation unit for a multiprocessor system
HITACHI LTD134 citations96
US4523272AJun 11, 1985
Bus selection control in a data transmission apparatus for a multiprocessor system
HITACHI LTD88 citations95
US5003458AMar 26, 1991
Suspended instruction restart processing system based on a checkpoint microprogram address
HITACHI LTD31 citations92
US4807113AFeb 21, 1989
Microprogrammed control data processing apparatus in which operand source and/or operand destination is determined independent of microprogram control
HITACHI LTD24 citations92
US4644490AFeb 17, 1987
Floating point data adder
HITACHI LTD30 citations92
US4530050AJul 16, 1985
Central processing unit for executing instructions of variable length having end information for operand specifiers
HITACHI LTD55 citations92
US4523276AJun 11, 1985
Input/output control device with memory device for storing variable-length data and method of controlling thereof
HITACHI LTD41 citations92
US4520441AMay 28, 1985
Data processing system
HITACHI LTD38 citations92
US5146569ASep 8, 1992
System for storing restart address of microprogram, determining the validity, and using valid restart address to resume execution upon removal of suspension
HITACHI LTD29 citations91
US4896258AJan 23, 1990
Data processor provided with instructions which refer to both tagged and tagless data
HITACHI LTD16 citations73