US4847776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microprocessor parking meter internally held in a car
Assignee: Individual
•
Filing: 1988-04-20
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Granted: 1989-07-11
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Expires: 2008-04-20
Abstract
Abstract A microprocessor parking meter includes: a casing; a plurality of control keys formed on the casing for selecting several parking areas, for starting a timing operation or for stopping the timing operation; a display of multiple digits formed on the casing for showing a selected parking area, a number of parking units and a real clock time, a microprocessor operatively scanning the display and the control keys for showing or sequentially degrading the number of parking units each unit corresponding to a time interval with respect to a selected parking areas among the plural different parking areas during a lapse of parking time, forming a compact unit held in a car ready for outside inspection or for convenient parking service by a owner of the meter.
Inventors
- 👤 Chung-Hua Huang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:18
CPC Classifications
G; G04; G04F; G04F1/00; G04F1/005; G06; G06Q; G06Q30/00; G06Q30/02; G06Q30/0283; G06Q30/0284; G07; G07C; G07C1/00; G07C1/30; G08; G08G; G08G1/00; G08G1/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
247 words
A microprocessor parking meter as internally held in a car comprising: a casing: a control key means formed on a lower portion of said casing having a plurality of area selector keys for selecting plural different parking areas, a start key for starting a timing operation of said microprocessor parking meter, and a stop key for stopping the time operation of the parking meter; a display means formed on an upper portion of said casing having a plurality of digits indicating a parking status and real time which includes a first digit for parking area display, a second, third and fourth digit for a parking-unit display, a decimal-point of the fourth digit for showing parking-at-present, and a time indicating display with the fifth, sixth, seventh and eighth digit showing a real clock time; a microprocessor means operatively manipulating said display means as actuated by said control key means for showing and sequentially degrading or reducing preset parking units each unit corresponding to a parking time interval with respect to a selected parking area among the different parking areas during a lapse of parking time; and a trigger means having a trigger-out connector and a trigger-in connector respectively formed on two opposite sides of said casing and electrically connected with said microprocessor means, having a connection cord operatively connecting a trigger-out connector of a first parking meter to a trigger-in connector of a second parking meter for continuously actuating the second meter when the first meter is finished.
Claim 2
Dependent Claim
247 words
A microprocessor parking meter as internally held in a car comprising: a casing: a control key means formed on a lower portion of said casing having a plurality of area selector keys for selecting plural different parking areas, a start key for starting a timing operation of said microprocessor parking meter, and a stop key for stopping the time operation of the parking meter; a display means formed on an upper portion of said casing having a plurality of digits indicating a parking status and real time which includes a first digit for parking area display, a second, third and fourth digit for a parking-unit display, a decimal-point of the fourth digit for showing parking-at-present, and a time indicating display with the fifth, sixth, seventh and eighth digit showing a real clock time; a microprocessor means operatively manipulating said display means as actuated by said control key means for showing and sequentially degrading or reducing preset parking units each unit corresponding to a parking time interval with respect to a selected parking area among the different parking areas during a lapse of parking time; and a trigger means having a trigger-out connector and a trigger-in connector respectively formed on two opposite sides of said casing and electrically connected with said microprocessor means, having a connection cord operatively connecting a trigger-out connector of a first parking meter to a trigger-in connector of a second parking meter for continuously actuating the second meter when the first meter is finished.
Claim 3
Dependent Claim
181 words
A parking meter according to claim 1, wherein said microprocessor means includes: a central processing unit operatively scanning said display means and said control key means for sequentially degrading the parking units each unit for corresponding to a parking time interval, a program memory device for memorizing a plurality of instructions therein to be fetched by said central processing unit, a chip selector electrically connected with said central processing unit and operatively selecting an input/output interface chip or for selecting an input interface buffer, a display decoder connected with a port of said input/output interface chip connected to said central processing unit for selecting a scanned display digit of the digital display means, a display buffer connected with the other port of said input/output interface chip for scanning of a display digit, the input interface buffer operatively actuating said central processing unit for fetching instructions from said memory device as operated by said control key means, and a hardware time base having a quartz crystal oscillator capable of producing clock pulses for indicating a real clock time on said display means.
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) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |