US5068537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passenger number sensor system
Assignee: Panasonic Holdings Corp
•
Filing: 1991-03-14
•
Granted: 1991-11-26
•
Expires: 2011-03-14
Abstract
Abstract A passenger-number sensor system wherein a plurality of infrared ray sensors are disposed on a straight line to detect temperature changes in their light reception zones, a plurality of optical lenses are provided one for each of the plurality of infrared ray sensors, and a counter is provided to select one of the addition values in a predetermined range according to a sense pattern based on the temperature changes of the infrared ray sensors and add the selected addition value to a so-far accumulated count value.
Inventors
- 👤 Haruo Ishikawa
- 👤 Kiyoshi Kawana
- 👤 Ko Honma
- 👤 Takashi Yoshikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:50
CPC Classifications
G; G01; G01V; G01V8/00; G01V8/10; G01V8/20; G06; G06M; G06M1/00; G06M1/08; G06M1/10; G06M1/101; G07; G07C; G07C9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A passenger-number sensor system comprising: a plurality of infrared ray sensors disposed on a straight line for detecting temperature changes in their light reception zones; a plurality of optical lenses disposed one for each of said plurality of infrared ray sensors for determining said light reception zones of the infrared ray sensors; and means for selecting one of the addition values 1 to n according to a sense pattern based on the temperature changes of the infrared ray sensors.
Claim 2
Dependent Claim
79 words
A passenger-number sensor system comprising: a plurality of infrared ray sensors disposed on a straight line for detecting temperature changes in their light reception zones; a plurality of optical lenses disposed one for each of said plurality of infrared ray sensors for determining said light reception zones of the infrared ray sensors; and means for selecting one of the addition values 1 to n according to a sense pattern based on the temperature changes of the infrared ray sensors.
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) | 1994-11-25 | 1995-05-27 | 1995-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-25 | 1999-05-27 | 1999-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-25 | 2003-05-27 | 2003-11-26 | $7700.00 | Window Closed / Lapsed |