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US3713148A
Expired / Lapsed
US
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Transponder apparatus and system
Assignee: Communications Services Corp Inc
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Filing: 1970-05-21
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Granted: 1973-01-23
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Expires: 1990-05-21
Abstract
Abstract A novel transponder apparatus and system is disclosed, the system being of the general type wherein a base station transmits an ''''interrogation'''' signal to a remote transponder, the transponder responding with an ''''answerback'''' transmission. The transponder includes a changeable or writable memory, and means responsive to the transmitted interrogation signal for processing the signal and for selectively writing data into or reading data out from the memory. The transponder then transmits an answerback signal from the data read-out from its internal memory, which signal may be interpreted at the base station. In the preferred inventive embodiment, the transponder generates its own operating power from the transmitted interrogation signal, such that the transponder apparatus is self-contained.
Inventors
- 👤 M Cardullo
- 👤 W Parks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
G; G07; G07B; G07B15/00; G07B15/06; G07B15/063; G01; G01S; G01S13/00; G01S13/74; G01S13/76; G01S13/765; G06; G06K; G06K19/00; G06K19/06; G06K19/067; G06K19/07; G06K19/0723; G06K7/00; G06K7/0008
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
61 words
A transponder comprising: memory means for storing date; means responsive to a transmitted code signal for selectively writing data into or reading data out from said memory means, and for transmitting as an answerback signal data read-out from said memory means; and means for internally generating operating power for said transponder from said transmitted code signal, whereby said transponder is self-contained.
Claim 2
Dependent Claim
61 words
A transponder comprising: memory means for storing date; means responsive to a transmitted code signal for selectively writing data into or reading data out from said memory means, and for transmitting as an answerback signal data read-out from said memory means; and means for internally generating operating power for said transponder from said transmitted code signal, whereby said transponder is self-contained.
Claim 3
Dependent Claim
65 words
A transponder as defined in claim 1, wherein the transmitted code signal comprises a modulated carrier wave, said means for generating operating power comprising detecting means for detecting said carrier wave and producing an operating power output signal therefrom, and means responsive to said operating power output signal for powering said transponder, and wherein said modulations of said carrier wave contain data and command information.
Claim 4
Dependent Claim
15 words
A transponder as defined in claim 2, wherein said carrier wave is of radio frequency.
Claim 5
Dependent Claim
15 words
A transponder as defined in claim 2, wherein said carrier wave is of light frequency.
Claim 6
Dependent Claim
15 words
A transponder as defined in claim 2, wherein said carrier wave is of acoustic frequency.
Claim 7
Dependent Claim
38 words
A transponder as defined in claim 2, wherein said means responsive to the transmitted code signal detects the modulations thereof and operates to transmit said answerback signal in accordance with pre-selected logic data stored in said memory means.
Claim 8
Dependent Claim
92 words
An interrogation system comprising: base station means for transmitting an interrogation signal; and remote station means, said remote station means including a receiver means for receiving said interrogation signal, a memory means, means for processing said signal in accordance with predetermined logic to selectively write data into and read data out from said memory means, and transmitter means for transmitting an answerback signal to said base station means; and said remote station means further includes means for generating operating power from said received interrogation signal, whereby said remote station means is self-contained.
Claim 9
Dependent Claim
92 words
An interrogation system comprising: base station means for transmitting an interrogation signal; and remote station means, said remote station means including a receiver means for receiving said interrogation signal, a memory means, means for processing said signal in accordance with predetermined logic to selectively write data into and read data out from said memory means, and transmitter means for transmitting an answerback signal to said base station means; and said remote station means further includes means for generating operating power from said received interrogation signal, whereby said remote station means is self-contained.
References Cited (Backward Citations)
US3144645A
Cited
US3541257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |