US3710360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hall generator system for read-out of magnetized information carriers with several code positions
Assignee: Siemens AG
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Filing: 1971-04-16
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Granted: 1973-01-09
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Expires: 1991-04-16
Abstract
Abstract A system for reading magnetized information carriers with several code positions comprises a number of Hall generators, a signal input circuit with a capacitor which has a discharge circuit connected across the capacitor and comprises a controllable semi-conductor switching member, preferably a thyristor. An inductive transformer has its primary winding connected in series with the switching member. Several secondary windings of a transformer are connected with the control-current terminals of the respective Hall generators. An electronic control device, which is to respond to the code pulses of the input circuit, is connected to the Hall electrode pairs of the respective Hall generators.
Inventors
- 👤 D Flachsbarth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:38
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/33; G11B5/37; G06; G06K; G06K7/00; G06K7/08; G06K7/082; G06K7/087; H; H03; H03M; H03M1/00; H03M1/10; H03M1/1009
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
110 words
Hall generator system for read-out of magnetized information carriers with several code positions, comprising Hall generators having each a pair of control-current terminals and a pair of Hall electrodes for furnishing a code-responsive Hall voltage; a signal input circuit having a chargeable capacitor, a discharge circuit connected across said capacitor and comprising a controllable semiconductor switching member, an inductive transformer having a primary winding series connected with said switching member in said discharge circuit, said transformer having secondary windings connected with said control current terminals of said respective HaLl generators, and an electronic control device having controlling input circuit means connected to said Hall electrodes of said respective Hall generators.
Claim 2
Dependent Claim
110 words
Hall generator system for read-out of magnetized information carriers with several code positions, comprising Hall generators having each a pair of control-current terminals and a pair of Hall electrodes for furnishing a code-responsive Hall voltage; a signal input circuit having a chargeable capacitor, a discharge circuit connected across said capacitor and comprising a controllable semiconductor switching member, an inductive transformer having a primary winding series connected with said switching member in said discharge circuit, said transformer having secondary windings connected with said control current terminals of said respective HaLl generators, and an electronic control device having controlling input circuit means connected to said Hall electrodes of said respective Hall generators.
Claim 3
Dependent Claim
73 words
In a system as claimed in claim 1 for series reading of several equal information carriers, all of said Hall generators being connected with one of their Hall electrodes to a common return circuit bus and the Hall generators which are connected with the secondary windings coordinated to the same code positions of the information carriers decoupling diodes connecting the respective other Hall electrodes to control busses provided for the respective secondary windings.
Claim 4
Dependent Claim
52 words
In a system as claimed in claim 1 for series reading of several information carriers, whereby those Hall generators that are connected to secondary windings are coordinated to the same one of the respective code positions of the information carriers having their respective Hall electrode circuits connected in series with each other.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |