Inventor
YUMDE YASUFUMI
11 patents
⚠️ This page may combine multiple inventors who share the name “YUMDE YASUFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
10 patentsUS4210927AJul 1, 1980
Method for transmitting a color video signal on a narrow-band transmission line
HITACHI LTD84 citations95
US4843493AJun 27, 1989
Rotary head type magnetic recording and reproducing apparatus and method of producing tracking control signals therefor
HITACHI LTD24 citations91
US4292652ASep 29, 1981
Method of receiving a video signal
HITACHI LTD23 citations81
US4937686AJun 26, 1990
Method and apparatus for PCM recording and reproducing an audio signal having an asynchronous relation between the sampling frequency for the audio signal and the rotation frequency of a rotary head scanner
HITACHI LTD17 citations74
US4670796AJun 2, 1987
Rotary head type PCM recorder
HITACHI LTD18 citations74
US3947870AMar 30, 1976
Receiving system for auxiliary information signal transmitted during the vertical blanking period of a television signal
HITACHI LTD15 citations73
US3941921AMar 2, 1976
System for converting frequency band of picture signal
HITACHI LTD12 citations73
US4743977AMay 10, 1988
VTR having magnetic-head array capable of recording/reproducing signals of a plurality of recording systems
HITACHI LTD18 citations71
US4081834AMar 28, 1978
System for compensating jitter of video signal
HITACHI LTD6 citations60
US4004082AJan 18, 1977
Method and system for multiplexing signal for transmission
HITACHI LTD1 citations51