US5115236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote control system using a wake up signal
Assignee: US Philips Corp
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Filing: 1988-10-28
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Granted: 1992-05-19
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Expires: 2008-10-28
Abstract
Abstract A two-way remote control system suitable for use with a plurality of apparatus, the system including a hand held unit comprising a transmitter and a receiver, each transmitted message in the system comprising a series of pulses and the beginning of each message having a wake-up pulse which switches a receiver from a rest-state to an operative-state, the receiver switching back to the rest-state if no wake-up pulse has been received for a certain period.
Inventors
- 👤 Hans E. P. Kohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:17
CPC Classifications
H; H04; H04Q; H04Q9/00; H04W; H04W52/00; H04W52/02; H04W52/0209; H04W52/0225; H04W52/0229; G; G08; G08C; G08C19/00; G08C19/16; G08C19/28; H04L; H04L7/00; H04L7/04; H04L7/06; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
212 words
A remote control system comprising a transmitter and a receiver for the transmission and reception of messages, in which system said transmitter comprises means for generating messages, each message comprising a series of pulses and the beginning of each message including a wake-up pulse; a modulation circuit for modulating the generated messages; in said system said receiver comprises means for generating power supply energy; a demodulation circuit for demodulating received modulated messages and for generating a rough version of each received modulated message; a signal processing circuit fed by said power supply means and being coupled to the demodulation circuit for receiving the rough versions of messages and generating a stylized version of each message; said receiver also comprising a wake-up pulse detection circuit generating an auxiliary wake-up pulse in response to each received wake-up pulse; and switching means coupled to the signal processing circuit for selectively applying power supply energy thereto; said switching means applying the power supply energy to the signal processing circuit only after an auxiliary wake-up pulse has been generated and discontinuing said supply if no auxiliary wake-up pulse has been generated for a predetermined period, said receiver maintaining said wake-up pulse detection circuit in condition to sense the next transmitted wake-up pulse after each said predetermined period.
Claim 2
Dependent Claim
212 words
A remote control system comprising a transmitter and a receiver for the transmission and reception of messages, in which system said transmitter comprises means for generating messages, each message comprising a series of pulses and the beginning of each message including a wake-up pulse; a modulation circuit for modulating the generated messages; in said system said receiver comprises means for generating power supply energy; a demodulation circuit for demodulating received modulated messages and for generating a rough version of each received modulated message; a signal processing circuit fed by said power supply means and being coupled to the demodulation circuit for receiving the rough versions of messages and generating a stylized version of each message; said receiver also comprising a wake-up pulse detection circuit generating an auxiliary wake-up pulse in response to each received wake-up pulse; and switching means coupled to the signal processing circuit for selectively applying power supply energy thereto; said switching means applying the power supply energy to the signal processing circuit only after an auxiliary wake-up pulse has been generated and discontinuing said supply if no auxiliary wake-up pulse has been generated for a predetermined period, said receiver maintaining said wake-up pulse detection circuit in condition to sense the next transmitted wake-up pulse after each said predetermined period.
Claim 3
Dependent Claim
37 words
A transmitter suitable for use in generating messages in a remote control system as claimed in claim 1, the wake-up pulse in each message being distinguished from the other pulses in the series by its energy content.
Claim 4
Dependent Claim
33 words
A transmitter suitable for use in a remote control system as claimed in claim 1, the wake-up pulse in each message being distinguished from the other pulses in the series by its amplitude.
Claim 5
Dependent Claim
164 words
A remote control system comprising a transmitter and a receiver for the transmission and reception of messages, each message comprising a series of pulses and the beginning of each message including a wake-up pulse; in said system said receiver comprises means for generating power supply energy; a signal processing circuit fed by said power supply and receiving said messages and generating a stylized version of each message; said receiver also comprising a wake-up pulse detection circuit generating an auxiliary wake-up pulse in response to each received wake-up pulse; and switching means coupled to the signal processing circuit for selectively applying power supply energy thereto; said switching means applying the power supply energy to the signal processing circuit only after an auxiliary wake-up pulse has been generated and discontinuing said supply if no auxiliary wake-up pulse has been generated for a predetermined period, said receiver maintaining said wake-up pulse detection circuit in condition to sense the next transmitted wake-up pulse after each such predetermined period.
Claim 6
Dependent Claim
164 words
A remote control system comprising a transmitter and a receiver for the transmission and reception of messages, each message comprising a series of pulses and the beginning of each message including a wake-up pulse; in said system said receiver comprises means for generating power supply energy; a signal processing circuit fed by said power supply and receiving said messages and generating a stylized version of each message; said receiver also comprising a wake-up pulse detection circuit generating an auxiliary wake-up pulse in response to each received wake-up pulse; and switching means coupled to the signal processing circuit for selectively applying power supply energy thereto; said switching means applying the power supply energy to the signal processing circuit only after an auxiliary wake-up pulse has been generated and discontinuing said supply if no auxiliary wake-up pulse has been generated for a predetermined period, said receiver maintaining said wake-up pulse detection circuit in condition to sense the next transmitted wake-up pulse after each such predetermined period.
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) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |