Four channel recording and reproducing system
Abstract
Abstract D R A W I N G A METHOD AND APPARATUS FOR ACCURATELY REPRODUCING IN A FIRST REGION A SOUND PATTERN REPRESENTATIVE OF A SOUND PATTERN OCCURING IN A SECOND REGION COMPRISING PRODUCING A FIRST SIGNAL REPRESENTING THE TOTAL SOUND PRESSURE AT A POINT IN THE SECOND REGION, A SECOND SIGNAL REPRESENTING THE RELATIVE AMOUNT OF SOUND ENERGY FLOWING IN A FIRST PATH ACROSS THE REGION AND A THIRD SIGNAL REPRESENTING THE RELATIVE AMOUNT OF SOUND ENERGY FLOWING IN A FIRST PATH ACROSS THE REGION. THE SIGNALS ARE COMBINED TO PRODUCE AT LEAST FIRST AND SECOND OUTPUT SIGNALS WHEREIN THE FIRST OUTPUT SIGNAL IS DIRECTLY PROPORTIONAL TO THE FIRST AND SECOND SIGNALS AND THE SECOND OUTPUT SIGNAL IS DIRECTLY PROPORTIONAL TO THE FIRST AND THIRD SIGNALS. DECODING IS PROVIDED TO DECODE THE FIRST AND SECOND OUTPUT SIGNALS TO PRODUCE THE SECOND PATTERN IN THE FIRST REGION.
Inventors
- 👤 R Berkovitz
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |