Inventor
Toshiro Aizawa
Inventor
Ebina, JP
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer70%
H04NPictorial communication, e.g. television30%
PatentTitleYear
5,936,791'Helical scan data recording and playback method and apparatus wherein reference helical tracks preceding data recording area on magnetic tape are played back before recording or playback of target data'19995,737,146'Data recording and playback apparatus using a helical scan system with magnetic head for recording and playing back pattern signal for tracking in tracking area within helical track'19985,617,535'Recording and playbackk apparatus'19975,521,769'Magnetic tape drive with displaceable head capable of a re-try operation'19965,500,775'Data recording and reproducing apparatus'19965,488,520'Data recording and playback apparatus using helical scan system with magnetic head for recording and playing back pattern signal for tracking in tracking area within helical track'19965,392,163'Digital video signal reproducing apparatus with compression and expansion of playback time'19955,047,866'Comb filter type luminance/chrominance signal separation circuit'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–1999Patents assigned to HITACHI LTD (8)· patent assignee history
1991–1995Based in Katsuta, JP· patent location history
1996–1999Based in Ebina, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 8 | 1991–1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ebina, JP | 6 | 1996–1999 |
| Katsuta, JP | 2 | 1991–1995 |