US4549178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy control system with transmitter having channel multiplexing and frequency modulation
Assignee: Osram Sylvania Inc
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Filing: 1983-10-11
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Granted: 1985-10-22
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Expires: 2003-10-11
Abstract
Abstract A transmitter circuit adapted to transmit control signals to receivers which in turn activate fluorescent lamp fixtures. The transmitter comprises a frequency controllable oscillator and means coupled from the oscillator for providing alternating cycle control signals adapted to control the drive of the load. A divider circuit is used responsive to the oscillator frequency for providing a divided frequency signal of lower frequency of that of the oscillator. Feedback means including biphase means is responsive to the divided frequency signal and is coupled to the oscillator for controlling the oscillating frequency thereof. The oscillator output frequency is switchable at the divided frequency signal rate from a first frequency to a second frequency under control from the divider circuit. There is preferrably also provided frequency modulation control of the oscillator and in this regard the output of the divider circuit couples by way of a frequency modulation wave shape circuit to the frequency modulation input of the frequency controllable oscillator. Zero crossing detecting circuitry is also provided to reduce power consumption.
Inventors
- 👤 James N. Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:06
CPC Classifications
H; H05; H05B; H05B47/00; H05B47/10; H05B47/155; H02; H02J; H02J13/00; H02J13/13; H02J13/1311; H02J13/1313; Y; Y02; Y02B; Y02B90/00; Y02B90/20; Y04; Y04S; Y04S40/00; Y04S40/12; Y04S40/121
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
97 words
A transmitter system for generating control signals for controlling at least one load, said system comprising: a frequency controllable oscillator; means coupled from said oscillator for providing alternating cycle control signals to control drive of said load; means responsive to the oscillator frequency for providing a divided frequency signal of lower frequency than that of the oscillator; and feedback means including biphase means responsive to said divided frequency signal coupled to and for controlling said oscillator; whereby the oscillator output frequency is switchable at the divided frequency signal rate from a first frequency to a second frequency.
Claim 2
Dependent Claim
97 words
A transmitter system for generating control signals for controlling at least one load, said system comprising: a frequency controllable oscillator; means coupled from said oscillator for providing alternating cycle control signals to control drive of said load; means responsive to the oscillator frequency for providing a divided frequency signal of lower frequency than that of the oscillator; and feedback means including biphase means responsive to said divided frequency signal coupled to and for controlling said oscillator; whereby the oscillator output frequency is switchable at the divided frequency signal rate from a first frequency to a second frequency.
Claim 3
Dependent Claim
17 words
A transmitter system as set forth in claim 1 wherein said load comprises a fluorescent lamp fixture.
Claim 4
Dependent Claim
26 words
A transmitter system as set forth in claim 1 wherein said means coupled from said oscillator for providing alternating cycle control signals comprises a first flip-flop.
Claim 5
Dependent Claim
27 words
A transmitter system as set forth in claim 3 wherein said means responsive to the oscillator frequency for providing a divided frequency signal comprises a divider circuit.
Claim 6
Dependent Claim
26 words
A transmitter system as set forth in claim 4 wherein said divider circuit is coupled from one of the two ascertion/negation outputs of the first flip-flop.
Claim 7
Dependent Claim
17 words
A transmitter system as set forth in claim 5 wherein said biphase means comprises a second flip-flop.
Claim 8
Dependent Claim
26 words
A transmitter system as set forth in claim 6 including means coupling the output of the divider circuit to the clock input of the second flip-flop.
Claim 9
Dependent Claim
20 words
A transmitter system as set forth in claim 7 wherein both said first and second flip-flops are J-K type flip-flops.
Claim 10
Dependent Claim
34 words
A transmitter system as set forth in claim 1 wherein said means responsive to the oscillator frequency for providing a divided frequency signal comprises a divider circuit providing division in the range of 15-30.
Claim 11
Dependent Claim
28 words
A transmitter system as set forth in claim 1 further including a frequency modulation circuit receiving said divided frequency signal and having its output coupled to the oscillator.
Claim 12
Dependent Claim
34 words
A transmitter system as set forth in claim 10 wherein said oscillator has a frequency modulation input and the output of the frequency modulation circuit couples to the frequency modulation input of the oscillator.
Claim 13
Dependent Claim
25 words
A transmitter system as set forth in claim 1 further including an input control network for selectively disabling at least one frequency from said oscillator.
Claim 14
Dependent Claim
18 words
A transmitter system as set forth in claim 12 wherein said input control network comprises a decoder network.
Claim 15
Dependent Claim
28 words
A transmitter system as set forth in claim 13 wherein said biphase means comprises a flip-flop circuit with the output of said decoder coupling to said flip-flop circuit.
Claim 16
Dependent Claim
32 words
A transmitter system as set forth in claim 1 further including zero crossing means having a monostable means for controlling said means coupled from the oscillator for providing alternating cycle control signals.
Claim 17
Dependent Claim
27 words
A transmitter system as set forth in claim 15 wherein said zero crossing circuitry comprises multiple zero crossing detectors and at the output thereof a gate means.
Claim 18
Dependent Claim
83 words
A transmitter system for generating control signals for controlling at least one load comprising: a frequency controllable oscillator; means coupled from said oscillator for providing alternating cycle control signals for controlling drive of the load; means responsive to the oscillator frequency for providing a divided frequency signal of lower frequency than that of the oscillator; and means for generating from said divided frequency signal a frequency modulation signal; and means coupling the frequency modulation signal to a frequency modulation input of said oscillator.
Claim 19
Dependent Claim
83 words
A transmitter system for generating control signals for controlling at least one load comprising: a frequency controllable oscillator; means coupled from said oscillator for providing alternating cycle control signals for controlling drive of the load; means responsive to the oscillator frequency for providing a divided frequency signal of lower frequency than that of the oscillator; and means for generating from said divided frequency signal a frequency modulation signal; and means coupling the frequency modulation signal to a frequency modulation input of said oscillator.
Claim 20
Dependent Claim
48 words
A transmitter system as set forth in claim 17 further including feedback means having a biphase means responsive to the divided frequency signal for controlling the oscillator output frequency so that it is switchable at the divided frequency signal rate from a first frequency to a second frequency.
Claim 21
Dependent Claim
34 words
A transmitter system as set forth in claim 17 wherein said means coupled from said oscillator for providing alternating cycle control signals comprises a first flip-flop and said biphase means comprises a second flip-flop.
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) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |