Patent US4594619A successfully refreshed from Google Patents.
US4594619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic reproduce apparatus with magnetoresistive head
Assignee: Sharp Corp
•
Filing: 1983-05-23
•
Granted: 1986-06-10
•
Expires: 2003-05-23
Abstract
Abstract A magnetic-record reproduction system is provided for selectively reproducing magnetic information signals recorded on a magnetic tape as a plurality of programs, each program being separated from other programs by cue signals. The system includes a head for reproducing the recorded magnetic information, a movable tension arm for maintaining the head in tensioned contact with the magnetic tape, and a cue signal detector mounted to the tension arm to enable selection of recorded programs thereby. A cavity is formed in the tension arm for receiving a magnetoresistive element to form the detector, and a non-magnetic metallic film is mounted on the surface of the tension arm to protect the arm from abrasion as it contacts the magnetic tape.
Inventors
- 👤 Masaya Hijikigawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:47
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/665; G11B15/6653; G11B15/6656; G11B27/00; G11B27/10; G11B27/102; G11B27/107; G11B27/19; G11B27/28; G11B27/32; G11B27/326; G11B5/00; G11B5/127; G11B5/33; G11B5/39; G11B5/48; G11B5/488; G11B5/4893; G11B2220/00; G11B2220/90
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
156 words
A magnetic-record reproduction system for selectively reproducing magnetic information signals recorded on a magnetic tape as a plurality of programs, each said program being separated from others on said tape by cue signals, comprising: head means for reproducing said magnetic information signals recorded on said tape; transport means for moving said tape across said head means, said transport means including, tensioning means for maintaining said tape in tension as it is moved across said head means, said tensioning means including a movable tension arm contacting said tape; and detector means mounted to said tension arm for sensing said cue signals to enable selection of said program thereby, said detector means including a magnetoresistive element; said tension arm including, a cavity formed in said tension arm and receiving said magnetoresistive element, and a non-magnetic metallic film mounted on the surface of said tension arm and providing abrasion-resistance to said tension arm as it contacts said magnetic tape.
Claim 2
Dependent Claim
156 words
A magnetic-record reproduction system for selectively reproducing magnetic information signals recorded on a magnetic tape as a plurality of programs, each said program being separated from others on said tape by cue signals, comprising: head means for reproducing said magnetic information signals recorded on said tape; transport means for moving said tape across said head means, said transport means including, tensioning means for maintaining said tape in tension as it is moved across said head means, said tensioning means including a movable tension arm contacting said tape; and detector means mounted to said tension arm for sensing said cue signals to enable selection of said program thereby, said detector means including a magnetoresistive element; said tension arm including, a cavity formed in said tension arm and receiving said magnetoresistive element, and a non-magnetic metallic film mounted on the surface of said tension arm and providing abrasion-resistance to said tension arm as it contacts said magnetic tape.
Claim 3
Dependent Claim
36 words
The magnetic-record reproduction system of claim 1 wherein said programs are recorded on a front side of said tape; said cue signals monitored by said detector means being located on a back side of said tape.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |