Apparatus for interconnecting a telephone line and a portable calculator
First Claim
1. An apparatus for interconnecting a telephone line and a calculator equipped with a printer, with display means, and with input members in the form of keys or the like for introducing numeric values and operating orders, said apparatus being of the type which controls said calculator as a function of dialling and charge data appearing on said telephone line and which causes said calculator to print a called telephone number, to display the charges successively incurred during the call, and to print the total charge for said call upon termination thereof, the improvement comprising:
- first means connected to said telephone line for separately detecting dialling-type pulses and charge-type pulses,second means for establishing connections to said calculator only at contacts corresponding to said input members,processing means connected to said first means for recognizing and processing true dialling pulses,order-transmitting means connected to said second means and to said processing means for controlling the printing by said printer of numeric values corresponding to pulse trains formed by said dialling pulses, andcalculation and charge-printing control means connected to said first means and to said order-transmitting means for recognizing true charge pulses and for emitting for each charge pulse a control sequence for adding a charge unit, said sequence comprising elementary orders which are transmitted by said order-transmitting means to said calculator via said second means, thereby causing sold calculator to display the total of said charge units,said processing means being responsive to the end of said call for generating an end-of-call signal, and said control means being connected to said processing means for receiving an end-of-call signal said for thereupon emitting a charge-printing order which is transmitted by said order-transmitting means to said calculator, thereby causing said calculator to print said displayed total.
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Accused Products
Abstract
An apparatus for interconnecting a telephone line and a calculator having a printer and display means, wherein input detecting means are provided for recognizing dialing pulses and charge pulses on the telephone line, and output driving means are provided for acting upon the calculator only at points thereof corresponding to input keys and switches thereof which usually serve also to introduce values and give operating orders to the calculator, this output driving means being arranged first to control the printer for causing it to print telephone numbers in accordance with the number of dialing pulses detected by the input detecting means, then to control an addition process in the calculator for causing its display to indicate the charges successively incurred during a call, and finally to control the printer for causing it to print the total charges incurred during this call after the line has been restored.
11 Citations
9 Claims
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1. An apparatus for interconnecting a telephone line and a calculator equipped with a printer, with display means, and with input members in the form of keys or the like for introducing numeric values and operating orders, said apparatus being of the type which controls said calculator as a function of dialling and charge data appearing on said telephone line and which causes said calculator to print a called telephone number, to display the charges successively incurred during the call, and to print the total charge for said call upon termination thereof, the improvement comprising:
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first means connected to said telephone line for separately detecting dialling-type pulses and charge-type pulses, second means for establishing connections to said calculator only at contacts corresponding to said input members, processing means connected to said first means for recognizing and processing true dialling pulses, order-transmitting means connected to said second means and to said processing means for controlling the printing by said printer of numeric values corresponding to pulse trains formed by said dialling pulses, and calculation and charge-printing control means connected to said first means and to said order-transmitting means for recognizing true charge pulses and for emitting for each charge pulse a control sequence for adding a charge unit, said sequence comprising elementary orders which are transmitted by said order-transmitting means to said calculator via said second means, thereby causing sold calculator to display the total of said charge units, said processing means being responsive to the end of said call for generating an end-of-call signal, and said control means being connected to said processing means for receiving an end-of-call signal said for thereupon emitting a charge-printing order which is transmitted by said order-transmitting means to said calculator, thereby causing said calculator to print said displayed total. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification