US5274218A
Expired / Lapsed
US
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Magnetic recording method and circuit for toll road ticket
Assignee: Mitsubishi Heavy Industries Ltd
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Filing: 1991-09-09
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Granted: 1993-12-28
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Expires: 2011-09-09
Abstract
Abstract A method for reading information from a toll road ticket in which a mark indicating magnetic recording density is formed on a ticket and is detected. A magnetic record demodulating circuit is selected in accordance with the result of detection. Further, a conversion method for increasing a recording capacity of a ticket is provided.
Inventors
- 👤 Hideo Urata
- 👤 Naoshi Noguchi
- 👤 Shigeru Jojo
- 👤 Riichiro Yamashita
- 👤 Nobuhide Hirako
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:14
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/02; G07; G07B; G07B15/00; G07B15/06; G06; G06K; G06K1/00; G06K1/12; G06K1/125; G06K19/00; G06K19/06; G06K19/08; G06K19/10; G06K19/12; G06K7/00; G06K7/08; G06K7/082; G06K7/083; G06K7/084
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
68 words
A method of reading information from a toll road ticket comprising the steps of: detecting a mark formed on a roll road ticket indicating a magnetic recording density; selecting, in accordance with a result of the detecting step, a magnetic record demodulating means for demodulating an output signal of a read head; and reading with the read head information recorded magnetically in a magnetic stripe of the ticket.
Claim 2
Independent Claim
68 words
A method of reading information from a toll road ticket comprising the steps of: detecting a mark formed on a roll road ticket indicating a magnetic recording density; selecting, in accordance with a result of the detecting step, a magnetic record demodulating means for demodulating an output signal of a read head; and reading with the read head information recorded magnetically in a magnetic stripe of the ticket.
Claim 3
Dependent Claim
106 words
A conversion method of a magnetic record of a toll road ticket, wherein a read head and a write head are used for one track of a magnetic stripe of a ticket, the method comprising the steps of: reading information which has been previously recorded on a toll road ticket at a predetermined bit density with the read head; recording new information on said toll road ticket thereafter at a bit density higher than that of said previously recorded information with the write head; and reading the recorded contents of the new information with the read head for confirming the recorded contents of the new information.
Claim 4
Dependent Claim
106 words
A conversion method of a magnetic record of a toll road ticket, wherein a read head and a write head are used for one track of a magnetic stripe of a ticket, the method comprising the steps of: reading information which has been previously recorded on a toll road ticket at a predetermined bit density with the read head; recording new information on said toll road ticket thereafter at a bit density higher than that of said previously recorded information with the write head; and reading the recorded contents of the new information with the read head for confirming the recorded contents of the new information.
Claim 5
Dependent Claim
32 words
The conversion method according to claim 2, wherein the new information is recorded by a modified frequency modulation system when the previously recorded information has been recorded by a frequency modulation system.
Claim 6
Dependent Claim
111 words
A conversion method of a magnetic record of a toll road ticket, wherein a plurality of read heads and a plurality of write heads for a plurality of tracks are used for a magnetic stripe of a ticket, the method comprising the steps of: reading information which has been previously recorded on a toll road ticket in one track with at least one read head; recording new information on said toll road ticket over a plurality of tracks by means of a plurality of write heads thereafter; and reading the recorded contents of the new information with a plurality of read heads for confirming the recorded contents of the new information.
Claim 7
Dependent Claim
111 words
A conversion method of a magnetic record of a toll road ticket, wherein a plurality of read heads and a plurality of write heads for a plurality of tracks are used for a magnetic stripe of a ticket, the method comprising the steps of: reading information which has been previously recorded on a toll road ticket in one track with at least one read head; recording new information on said toll road ticket over a plurality of tracks by means of a plurality of write heads thereafter; and reading the recorded contents of the new information with a plurality of read heads for confirming the recorded contents of the new information.
Claim 8
Dependent Claim
25 words
The conversion method according to claim 4, wherein said new information is recorded in a bit density higher than that of the previously recorded information.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-27 | 1997-06-28 | 1997-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-27 | 2001-06-28 | 2001-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-27 | 2005-06-28 | 2005-12-28 | $7700.00 | Window Closed / Lapsed |