H04N 1/327
Initiating, continuing or ending a single-mode communication
Official title: Initiating, continuing or ending a single-mode communication; Handshaking therefor {(H04N1/32614 takes precedence)}
H04N1/327 (Initiating, continuing or ending a single-mode communication) appears on 2,045 US grants and 1,626 published applications in this corpus.
Search patents in H04N- Granted patents
- 2,045
- Published applications
- 1,626
- Assignees
- 345
- Inventors
- 2,317
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 14 | 0 |
| 1989 | 21 | 0 |
| 1990 | 24 | 0 |
| 1991 | 32 | 0 |
| 1992 | 36 | 0 |
| 1993 | 44 | 0 |
| 1994 | 49 | 0 |
| 1995 | 40 | 0 |
| 1996 | 48 | 0 |
| 1997 | 43 | 0 |
| 1998 | 53 | 0 |
| 1999 | 54 | 0 |
| 2000 | 37 | 0 |
| 2001 | 27 | 24 |
| 2002 | 49 | 55 |
| 2003 | 45 | 108 |
| 2004 | 64 | 69 |
| 2005 | 49 | 148 |
| 2006 | 94 | 65 |
| 2007 | 81 | 66 |
| 2008 | 67 | 108 |
| 2009 | 68 | 105 |
| 2010 | 87 | 113 |
| 2011 | 135 | 67 |
| 2012 | 75 | 63 |
| 2013 | 74 | 45 |
| 2014 | 54 | 49 |
| 2015 | 51 | 52 |
| 2016 | 56 | 63 |
| 2017 | 70 | 107 |
| 2018 | 74 | 78 |
| 2019 | 81 | 62 |
| 2020 | 71 | 48 |
| 2021 | 41 | 28 |
| 2022 | 32 | 31 |
| 2023 | 36 | 32 |
| 2024 | 20 | 21 |
| 2025 | 18 | 11 |
| 2026 | 3 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04N 1/32765Initiating a communication1,191
- H04N 1/32704Establishing a communication with one of a facsimile and another telecommunication apparatus472
- H04N 1/32797Systems adapted to communicate over more than one channel197
- H04N 1/32789Details of handshaking162
- H04N 1/32702Using digital control signals97
- H04N 1/32795Arrangements for keeping the communication line open84
- H04N 1/32786Ending a communication78
- H04N 1/32793Controlling a receiver or transmitter non-communication function in response to a communication59
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Most cited
By later US patents
- Method and apparatus for accessing and publishing electronic documents398US 5,848,413 ARicoh Company, Ltd. · 1998
- Interactive system for processing viewer responses to television programming375US 5,438,355 A1995
- Security system for controlling access to images and image related services299US 5,784,461 AEastman Kodak Company · 1998
- Method of encoding an E-mail address in a fax message and routing the fax message to a destination on a network297US 5,115,326 AHewlett-Packard Company · 1992
- Method of and apparatus for integrated voice (audio) communication simultaneously with "under voice" user-transparent digital data between telephone instruments294US 5,036,513 AAcademy of Applied Science · 1991