Taximeter indicating devices
First Claim
1. A taximeter encased in a housing, said taximeter comprising processing means for carrying out computations to determine a charge, storage means for storing a plurality of constants constituting a tariff structure in accordance with which said charge to be made is derived, means for interconnecting said processing means and said storage means wherein said processing means controls the storage means to read the contents of said storage means into said processing means without destroying the contents of said storage means, and data transfer means interconnected with said processing means and storage means and operable under the control of the processing means and operative on the storage means for electronically changing the constants of said tariff structure stored in said storage means without removing any part of the storage means from within said housing.
2 Assignments
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Accused Products
Abstract
A charge indicating device especially in the form of a taximeter is provided which makes use of micoprocessor techniques for carrying out the required computations and which is provided with storage means for storing the details on which the computation is based. In a preferred form a taximeter is constructed using L.S.I. semiconductor techniques.
24 Citations
44 Claims
- 1. A taximeter encased in a housing, said taximeter comprising processing means for carrying out computations to determine a charge, storage means for storing a plurality of constants constituting a tariff structure in accordance with which said charge to be made is derived, means for interconnecting said processing means and said storage means wherein said processing means controls the storage means to read the contents of said storage means into said processing means without destroying the contents of said storage means, and data transfer means interconnected with said processing means and storage means and operable under the control of the processing means and operative on the storage means for electronically changing the constants of said tariff structure stored in said storage means without removing any part of the storage means from within said housing.
- 41. A system comprising a taximeter and a loading means for use with a taximeter, said taximeter comprising first processing means, storage means for storing a plurality of constants constituting a tariff structure in accordance with which a charge to be made is derived, means for interconnecting said first processing means and said storage means wherein said first processing means controls the storage means, and data transfer means interconnected with said first processing means and storage means and operable under the control of said first processing means and operative on the storage means for electronically changing the information of said tariff structure stored in said storage means withou removing any part of the storage means from said device and in which a charge to be made is derived in accordance with tariff structure information stored in the storage means, said loading means comprising second processing means, information storage means for storing information relating to tariff structure information which is to be fed to said first processing means, connection means connecting the information storage means with the second processing means which is operative to control the information storage means, and interface means for connecting the second processing means to the said data transfer means of the taximeter.
Specification