US3283079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase control network for a stereophonic system
Assignee: Collins Radio Co
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Filing: 1964-07-14
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Granted: 1966-11-01
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Expires: 1984-07-14
Abstract
No abstract record available.
Inventors
- 👤 Charles E Dixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:04
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/44; H04H20/46; H04H20/47; H04H20/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
A PHASE CONTROL NETWORK FOR A STEREOPHONIC SYSTEM WHEREIN A PILOT SIGNAL IS TRANSMITTED ALONG WITH A HARMONICALLY RELATED SIGNAL CENTERED AT A SUPERAUDIO FREQUENCY, SAID NETWORK COMPRISING: SUPERAUDIO FREQUENCY GENERATING MEANS PRODUCING A SUPERAUDIO SIGNAL AT A PREDETERMINED FREQUENCY; PILOT SIGNAL GENERATING MEANS PRODUCING A PILOT SIGNAL AT A PREDETERMINED SUPERAUDIO SIGNAL MONICALLY RELATED TO SAID PREDETERMINED SUPERAUDIO SIGNAL FREQUENCY; PILOT SIGNAL GENERATING MEANS PRODUCING TRANSFORMER, SAID TRANSFORMER BEING CONNECTED TO OPPOSITE JUNCTIONS OF SAID DIODE BRIDGE, SAID SAMPLING MEANS RECEIVING SAID SUPERAUDIO AND PILOT SIGNALS AND PRODUCING A FIRST OUTPUT SIGNAL THAT INCLUDES A PORTION OF SAID PILOT SIGNAL AND A SECOND OUTPUT SIGNAL THAT INCLUDES A DIFFERENT PORTION OF SAID PILOT SIGNAL; SAID FIRST AND SECOND OUTPUT SIGNALS BEING TAKEN FROM THE OTHER OPPOSITE FUNCTIONS OF SAID DIODE BRIDGE; FIRST AND SECOND RECTIFYING MEANS RECEIVING SAID FIRST AND SECOND OUTPUT SIGNALS, RESPECTIVELY, FROM SAID SAMPLING MEANS; AND A VOLTAGER COMPARATOR CONNECTED TO SAID RECTIFYING MEANS AND PRODUCING AN ERROR SIGNAL THE MAGNITUDE OF WHICH IS DETERMINED BY THE DIFFERENCE BETWEN SAID FIRST AND SECOND OUTPUT SIGNALS, SAID ERROR SIGNAL CONTROLLING THE PHASE OF ONE OF SAID GENERATING MEANS TO THEREBY AUTOMATICALLY AND PRECISELY CONTROL THE PHASING BETWEEN SAID SUPERAUDIO AND PILOT SIGNALS.
Claim 2
Dependent Claim
205 words
A PHASE CONTROL NETWORK FOR A STEREOPHONIC SYSTEM WHEREIN A PILOT SIGNAL IS TRANSMITTED ALONG WITH A HARMONICALLY RELATED SIGNAL CENTERED AT A SUPERAUDIO FREQUENCY, SAID NETWORK COMPRISING: SUPERAUDIO FREQUENCY GENERATING MEANS PRODUCING A SUPERAUDIO SIGNAL AT A PREDETERMINED FREQUENCY; PILOT SIGNAL GENERATING MEANS PRODUCING A PILOT SIGNAL AT A PREDETERMINED SUPERAUDIO SIGNAL MONICALLY RELATED TO SAID PREDETERMINED SUPERAUDIO SIGNAL FREQUENCY; PILOT SIGNAL GENERATING MEANS PRODUCING TRANSFORMER, SAID TRANSFORMER BEING CONNECTED TO OPPOSITE JUNCTIONS OF SAID DIODE BRIDGE, SAID SAMPLING MEANS RECEIVING SAID SUPERAUDIO AND PILOT SIGNALS AND PRODUCING A FIRST OUTPUT SIGNAL THAT INCLUDES A PORTION OF SAID PILOT SIGNAL AND A SECOND OUTPUT SIGNAL THAT INCLUDES A DIFFERENT PORTION OF SAID PILOT SIGNAL; SAID FIRST AND SECOND OUTPUT SIGNALS BEING TAKEN FROM THE OTHER OPPOSITE FUNCTIONS OF SAID DIODE BRIDGE; FIRST AND SECOND RECTIFYING MEANS RECEIVING SAID FIRST AND SECOND OUTPUT SIGNALS, RESPECTIVELY, FROM SAID SAMPLING MEANS; AND A VOLTAGER COMPARATOR CONNECTED TO SAID RECTIFYING MEANS AND PRODUCING AN ERROR SIGNAL THE MAGNITUDE OF WHICH IS DETERMINED BY THE DIFFERENCE BETWEN SAID FIRST AND SECOND OUTPUT SIGNALS, SAID ERROR SIGNAL CONTROLLING THE PHASE OF ONE OF SAID GENERATING MEANS TO THEREBY AUTOMATICALLY AND PRECISELY CONTROL THE PHASING BETWEEN SAID SUPERAUDIO AND PILOT SIGNALS.
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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |