H04N 1/32721
Facsimile protocol signals
Official title: {facsimile protocol signals, e.g. DCS or TSI}
H04N1/32721 (Facsimile protocol signals) appears on 49 US grants and 16 published applications in this corpus.
Search patents in H04N- Granted patents
- 49
- Published applications
- 16
- Assignees
- 24
- Inventors
- 69
- Latest grant
- 27 Jun 2017
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 3 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 2 | 1 |
| 2009 | 2 | 3 |
| 2010 | 0 | 0 |
| 2011 | 2 | 3 |
| 2012 | 2 | 0 |
| 2013 | 2 | 0 |
| 2014 | 0 | 0 |
| 2015 | 2 | 2 |
| 2016 | 0 | 0 |
| 2017 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Facsimile passthrough silence suppression27 Jun 2017US 9,692,615 B2Dialogic Corporation
- Image processing apparatus, method of controlling the same and storage medium11 Apr 2017US 9,621,744 B2Canon Kabushiki Kaisha
- Method for synchronously implementing media switch in gateways used for fax over IP network8 Sep 2015US 9,131,081 B2Zte Corporation
- Communication apparatus, control method, and computer-usable medium for selecting a network for data transmission3 Feb 2015US 8,949,443 B2Canon Kabushiki Kaisha
- Communicating apparatus and communicating system24 Sep 2013US 8,542,382 B2Oki Data Corporation
- Communication apparatus, control method, and computer-usable medium for selcting a network for data transmission11 Jun 2015US 2015/0163374 A1Canon Kabushiki Kaisha
- Image processing apparatus, method of controlling the same and storage medium30 Apr 2015US 2015/0116786 A1Canon Kabushiki Kaisha
- Facsimile apparatus, its control method, program and storage medium14 Jul 2011US 2011/0170679 A1Canon Kabushiki Kaisha
- Facsimile passthrough silence suppression9 Jun 2011US 2011/0134914 A1Dialogic Corporation
- Mobile document imaging and transmission6 Jan 2011US 2011/0002005 A1Dialogic Corporation
Most cited
By later US patents
- Voice/facsimile/modem call discrimination method for voice over packet networks232US 7,126,711 B2Texas Instruments Incorporated · 2006
- Communication apparatus recognizing speech and automatically switching from data to speech transmission127US 4,815,121 ACanon Kabushiki Kaisha · 1989
- Telephone circuit to control off-hook status during receipt of caller-ID signal96US 5,377,260 ASierra Semiconductor Corporation · 1994
- Facsimile terminal device having voice message recording capability44US 5,014,296 AMatsushita Electric Industrial Co., Ltd. · 1991
- Two-way voice & digital data analyzer for telephones41US 5,022,071 AElectronic Speech Systems · 1991