H04N 23/41
Beam current control
Official title: {Beam current control}
H04N23/41 (Beam current control) appears on 36 US grants and 1 published applications in this corpus.
Search patents in H04N- Granted patents
- 36
- Published applications
- 1
- Assignees
- 16
- Inventors
- 50
- Latest grant
- 25 Dec 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Real-time-measurement projection device and three-dimensional-projection measurement device25 Dec 2018US 10,161,745 B2Panasonic Intellectual Property Management Co., Ltd.
- Magnetic deflection circuit with stabilized retrace11 Jun 1991US 5,023,525 AMegascan Technology, Inc.
- Successive approximation type control of the electron beam of a camera tube31 May 1988US 4,748,508 ARobert Bosch GmbH
- Method of and apparatus for controlling amount of electron beam in image pickup tube20 Oct 1987US 4,701,679 AHitachi, Ltd.
- Image pickup apparatus6 Oct 1987US 4,698,558 ASony Corporation
Most cited
By later US patents
- Circuit arrangement suitable for use in a television pick-up tube provided with an anti-comet tail electron gun13US 3,955,116 AU. S. Philips Corporation · 1976
- Method and system for controlling electron beam quantity in camera tube11US 3,999,011 AHitachi Electronics, Ltd. · 1976
- Television camera equipped with an anti-blooming device7US 4,380,028 AThomson-CSF · 1983
- Method of adjusting the current intensity of an electron beam in a pickup tube and television camera system suitable therefor6US 4,593,321 AU. S. Philips Corporation · 1986
- Circuit arrangement for use in a television camera tube with an anti-comet tail electron gun5US 3,931,466 AU. S. Philips Corporation · 1976