H04N 5/9204
Using frequency division multiplex
Official title: {using frequency division multiplex}
H04N5/9204 (Using frequency division multiplex) appears on 28 US grants and 0 published applications in this corpus.
Search patents in H04N- Granted patents
- 28
- Published applications
- 0
- Assignees
- 19
- Inventors
- 60
- Latest grant
- 20 Jul 1999
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Optical disk having first and second recording areas with wobble frequencies that do not interfere with EFM signal20 Jul 1999US 5,926,453 APioneer Electronic Corporation
- Recording and/or reproducing apparatus for displaying data differently in recording and reproduction17 Sep 1996US 5,557,480 ACanon Kabushiki Kaisha
- Magnetic recording apparatus with selective recording of auxiliary audio signal9 May 1995US 5,414,569 ASony Corporation
- Recording medium apparatus for inhibiting playback of predetermined recorded portions25 Apr 1995US 5,410,524 APioneer Electronic Corporation
- Test apparatus for an optical recording disc28 Dec 1993US 5,274,618 ASony Corporation
No published applications in this class yet.
Most cited
By later US patents
- Still video camera with a playback function and sound recording feature99US 5,146,353 AKonica Corporation · 1992
- Stereoscopic video disc record and recording and reproducing apparatus therefor77US 5,012,351 ANippon Hoso Kyokai · 1991
- Method and apparatus for recording and reproducing information including plural channel audio signals71US 5,130,816 APioneer Electronic Corporation · 1992
- System for combining multiple audio channels into the baseband video signal and the recovery of the audio channels therefrom43US 5,023,707 AMedia Transference International · 1991
- Magnetic recording apparatus with selective recording of auxiliary audio signal38US 5,414,569 ASony Corporation · 1995