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US 4,539,644 AGranted
Electronic taximeter and control system therefor
AssigneeKienzle Apparate GmbH
InventorsJurgen Adams, Hugo Schelling
Life of this patent
Estimating the term…
Abstract
In the taximeter disclosed, a microprocessor responds to a first set of pulses representing time and a second set of pulses representing distance and receives data representing a tariff from a constant store. The microprocessor calculates fares and advances the fares continuously on the basis of new calculations, while entering the results in a display for the driver and passenger. The constant store is in the form of a non-volatile memory for receiving programming data from an external source through a connector.
Claims15
A taximeter, comprising:
- calculating means responsive to first signals representing time and second signals representing distance,
- a store for storing data representing a tariff,
- display means for displaying data,
- said store and said display means being connected to said calculating means for respectively furnishing data to and displaying data from the calculating means, said calculating means including a microprocessor and said store being a non-volatile read and write memory, and
- utilization means for utilizing the non-volatile read-write memory connected to said calculating means to program and reprogram the tariff from a source external to the taximeter while maintaining the position of the non-volatile read-write memory and without using the programming capacity of the microprocessor, said utilization means including coupleable and decoupleable connector means and electrical conductors for connecting the connector arrangement to said non-volatile read-write memory.
2 more elements
A taximeter system, comprising:
- a taximeter including clock means for time signals, non-volatile read-write memory means for storing tariff data, calculating means for receiving distance signals and calculating values on the basis of signals applied thereto, and electrical connecting means for connecting the memory means and the clock means to said calculating means so that said calculating means calculates a fare on the basis of the distance signals, time signals and tariff data;
- a data generator having microprocessor means for processing data;
- and
- a bi-directional electrical connection in said taximeter for selectively connecting said microprocessor means in said generator to said memory means to transmit tariff data in two directions between said non-volatile read-write memory means and said microprocessor means.
1 more element
Dependencies are inferred from the claim text.