EP0178905A2
Expired / Lapsed
EP
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Magnetic recording and reproducing apparatus
Assignee: Pioneer Corp
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Filing: 1985-10-15
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Granted: —
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Expires: 2005-10-15
Abstract
Abstract A magnetic recording and reproducing apparatus in which, by appropriately setting the magnetic head drum speed and the tape speed relative thereto during the audio signal recording and reproducing times, the available recording space and the capacity of the semiconductor memory used for input and output of data are used optimally. The recording speed, for a head diameter of 40 mm, is made to be approximately 2,000 rpm for audio signal recording and reproduction, while the tape speed is approximately 20 mm/sec.
Inventors
- 👤 Saburo Pioneer Electronic Corp. Takaoka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 16:28
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/10527; G11B5/00; G11B5/008; G11B5/00813; G11B5/00847; G11B5/0086; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/928
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
134 words
A magnetic recording and reproducing apparatus comprising: a head drum ; and pair of magnetic recording and reproducing heads mounted on said drum and spaced apart from one another by an angle of 180°, a tape passing around said head over an angle greater than 180° : a semiconductor memory for storing data to be recorded on and data read from said tape: and means for establishing a rotational speed of said drum and a feeding speed of said tape such that a number of audio signal samples recorded in a section on said tape equivalent to a video signal area is an integer value and a number of bits recorded in one section on said tape equivalent to one field of said video signal is matched to a capacity of said semiconductor memory.
Claim 2
Dependent Claim
134 words
A magnetic recording and reproducing apparatus comprising: a head drum ; and pair of magnetic recording and reproducing heads mounted on said drum and spaced apart from one another by an angle of 180°, a tape passing around said head over an angle greater than 180° : a semiconductor memory for storing data to be recorded on and data read from said tape: and means for establishing a rotational speed of said drum and a feeding speed of said tape such that a number of audio signal samples recorded in a section on said tape equivalent to a video signal area is an integer value and a number of bits recorded in one section on said tape equivalent to one field of said video signal is matched to a capacity of said semiconductor memory.
Claim 3
Dependent Claim
112 words
A magnetic recording and reproducing method comprising the steps of: rotating a head drum having thereon a pair of magnetic recording and reproducing heads spaced apart from one another by 180° at a speed of approximately 2,000 rpm: passing a magnetic tape around said head through an angle of greater than 180°, whereby each of said magnetic heads continuously contacts said tape during a first period: recording data signals in the form of PCM-encoded audio data on said tape in a second period during which each of said magnetic heads turns through an angle of 180° ; and running said tape at a speed of approximately 20 mm/sec relative to said heads.
Claim 4
Dependent Claim
112 words
A magnetic recording and reproducing method comprising the steps of: rotating a head drum having thereon a pair of magnetic recording and reproducing heads spaced apart from one another by 180° at a speed of approximately 2,000 rpm: passing a magnetic tape around said head through an angle of greater than 180°, whereby each of said magnetic heads continuously contacts said tape during a first period: recording data signals in the form of PCM-encoded audio data on said tape in a second period during which each of said magnetic heads turns through an angle of 180° ; and running said tape at a speed of approximately 20 mm/sec relative to said heads.
References Cited (Backward Citations)
No citation records indexed.
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