US5764702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of timing signals
Assignee: Valeo Electronique SA
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Filing: 1995-09-06
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Granted: 1998-06-09
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Expires: 2015-09-06
Abstract
Abstract The device for the recovery of a timing signal comprises a oscillator (3) which includes an amplifier (4); a first impedance (Z1) connected between a first input and the output of the amplifier and a second impedance (Z2) also connected between the first input of the amplifier and ground. A third resistive impedance (R1) is connected between a second amplifier input and the amplifier output. A fourth resistive impedance (R2) is connected between the second amplifier input and an injection point of a voltage that corresponds the signal from which the timing signal is to be recovered.
Inventors
- 👤 Carlo Caiaffa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:55
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/20; H03B5/26
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
114 words
A device for the recovery of a timing signal of a given frequency from an input signal having a spectrum spread on either side of this frequency, wherein the device comprises a Wien bridge oscillator including: an amplifier, a first impedance mounted between a first input and an output of the amplifier, a second impedance connected between the first input of the amplifier and a reference potential, a third impedance of an essentially resistive type connected between a second input of the amplifier and the output of the amplifier, and a fourth impedance of an essentially resistive type connected between the second input of the amplifier and an injection point for the input signal.
Claim 2
Independent Claim
114 words
A device for the recovery of a timing signal of a given frequency from an input signal having a spectrum spread on either side of this frequency, wherein the device comprises a Wien bridge oscillator including: an amplifier, a first impedance mounted between a first input and an output of the amplifier, a second impedance connected between the first input of the amplifier and a reference potential, a third impedance of an essentially resistive type connected between a second input of the amplifier and the output of the amplifier, and a fourth impedance of an essentially resistive type connected between the second input of the amplifier and an injection point for the input signal.
Claim 3
Dependent Claim
28 words
A device according to claim 1, wherein the amplifier is an operational amplifier, the first input being its non-inverting input and the second input being its inverting input.
Claim 4
Dependent Claim
87 words
A remote control receiver intended to be used in a motor vehicle environment and intended to receive and to process a radio frequency signal which is a baseband modulated carrier, this receiver comprising means for the recovery of the baseband signal, means for the recovery of a timing signal from the baseband signal, a central processing unit to which the baseband signal and the recovered timing signal are transmitted, wherein the means for the recovery of the timing signal include a device as claimed in claim 1.
Claim 5
Dependent Claim
39 words
A receiver according to claim 3, comprising at the output of the oscillator, a delay network for changing the phase of the timing signal so that it corresponds to the signal at the input to the central processing unit.
Claim 6
Dependent Claim
80 words
A radio frequency transmission device intended to be used in a motor vehicle environment comprising a transmitter for the transmission of a radio frequency signal which is a baseband modulated carrier and a radio frequency receiver intended to receive and to process this signal, wherein the receiver is a receiver as claimed in claim 4, and wherein the baseband signal has a spectrum spread around the resonant frequency of the oscillator of the timing signal recovery device of the receiver.
Claim 7
Dependent Claim
87 words
A device according to claim 5, wherein the baseband signal is a signal which assumes at least two states and which is a succession of binary signals of time interval 2T each formed: by a portion of time interval T which bears the binary coding, by a synchronisation portion of time interval T which is identical from one binary signal to the other and which comprises two parts (I, II) staggered on either side of the said portion of time interval T which bears the binary coding.
Claim 8
Dependent Claim
90 words
A device according to claim 6, wherein the portion of time interval T which bears the binary coding is formed: for a first binary value by a signal which assumes a first state during a time interval αT, α being between 0 and 1 and being different from 0, from 1 and from 1/2, then a second state during a time interval (1-α)T, for a second binary value, by a signal which assumes the first state during a time interval (1-α)T and the second state during a time interval αT.
Claim 9
Dependent Claim
12 words
A device according to claim 7, wherein α is equal to 1/3.
Claim 10
Dependent Claim
63 words
A device according to claim 6, wherein the synchronization portion of time interval T is formed: for its first part by a signal which assumes the second state during a time interval βT, β being between 0 and 1 and being different form 0 and 1, for its second part by a signal which assumes the first state during a time interval (1-β)T.
Claim 11
Dependent Claim
12 words
A device according to claim 9, wherein β is equal to 1/2.
References Cited (Backward Citations)
FR2200676A1
Cited
US3873943A
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US4449247A
Cited
EP0123587A1
Cited
US4592071A
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US4996444A
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US5047735A
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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) | 2001-06-08 | 2001-12-08 | 2002-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-08 | 2005-12-08 | 2006-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-08 | 2009-12-08 | 2010-06-09 | $7700.00 | Window Closed / Lapsed |