US5881023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-correcting clock
Assignee: Individual
•
Filing: 1997-10-07
•
Granted: 1999-03-09
•
Expires: 2017-10-07
Abstract
Abstract A clock synchronized by date and time information taken from Caller ID information packets delivered with incoming calls on a telephone line provided with Caller ID service.
Inventors
- 👤 Jing-Lu Gu
- 👤 Robin Schneyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:28
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/57; G; G04; G04R; G04R20/00; G04R20/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
89 words
A clock displaying the date, the time, or both the date and the time comprising: A means for measuring the passage of time; A means for storing and updating a putative current date and time; A means for receiving and decoding Caller ID information packets from incoming telephone calls on an external telephone line; An algorithm for correcting said current date and time with information extracted from said Caller ID information packets; A means for displaying said current date, said current time, or both said current date and time.
Claim 2
Dependent Claim
89 words
A clock displaying the date, the time, or both the date and the time comprising: A means for measuring the passage of time; A means for storing and updating a putative current date and time; A means for receiving and decoding Caller ID information packets from incoming telephone calls on an external telephone line; An algorithm for correcting said current date and time with information extracted from said Caller ID information packets; A means for displaying said current date, said current time, or both said current date and time.
Claim 3
Dependent Claim
21 words
The clock according to claim 1 where said means for display consist of more than one similar or dissimilar display units.
Claim 4
Dependent Claim
80 words
The clock according to claim 1 where said means for measuring the passage of time is a microprocessor, and said means for receiving and decoding Caller ID information packets is a Caller ID decoder chip, and said means for display is an LED array, and said storage, correction, and display of said putative date and time is carried out by a firmware program residing in said microprocessor, or by a firmware program residing in non-volatile memory readable by said microprocessor.
Claim 5
Dependent Claim
25 words
The clock according to claim 1 where said algorithm is also capable of displaying caller number information extracted from said packets on said display means.
Claim 6
Dependent Claim
26 words
The clock according to claim 4 also comprising means to store and reproduce on said display historical information of said packets stored in a call log.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-03-08 | 2002-09-07 | 2003-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-08 | 2006-09-07 | 2007-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-08 | 2010-09-07 | 2011-03-09 | $7700.00 | Window Closed / Lapsed |