SU1584120A1 - Electronic magnetic-stripe credit card for coin-box telephones - Google Patents

Abstract

The invention relates to communication technology and can be used to provide a limited loan to a subscriber with a pre-bank payment system for communication services. The goal is to realize the possibility of receiving communication services on credit after the sum of the paid advance has been exhausted. The device contains a recording unit 1, a storage unit 2 of an advance payment, a reading unit 3, a subtracting unit 4, an analysis unit 5, a credit storage unit 6, a receiver 7 tonal pulses. The goal is achieved by the introduction of an analysis unit 5 and a credit storage unit 6. In the initial state, the card is charged with a specialized charging device to the cost paid by the subscriber, which is represented by the number of memory bits of the storage unit 2 of the advance. In block 5 of the analysis, two thresholds were rigidly introduced: the amount of the advance paid by the subscriber and the maximum allowed credit. When a service is provided, tariff pulses with a frequency corresponding to the amount of payment for the unit of service provided from the subscriber terminal device through the receiver 7 are sent to the subtractive inputs of the storage units 2 and 6. 1 Il.

Description

The invention relates to communication technology and can be used for

provision of a limited loan to a subscriber with an advance payment system for communication services.

The aim of the invention is to realize the possibility of obtaining communication services on credit after the amount of the prepayment has been exhausted.

The drawing shows a flowchart of an electronic credit card for payphones.

The electronic credit card contains a recording unit 1, an advance storage unit 2, a reading unit 3, a subtracting unit 4, an analysis unit 5, a credit storage unit 6, a receiver 7 tariff pulses, the first 8, the second 9 and the third 10 inputs of the first credit card 11 and the second 12 e-credit card exits. Electronic credit card works as follows.

In the initial state, the card is charged with a specialized charging device through the second 9 and third 10 inputs to the cost paid by the subscriber, which is represented by the number of memory bits of the advance payment unit 2. Two thresholds were rigidly entered into analysis unit 5: a code for the number of tariff pulses, which represents the amount of advance payment paid by the subscriber, and a code for the number of pulses, which represents the maximum possible number of tariff pulses for providing communication services on this credit card, including the maximum allowed credit. The control outputs of the analysis unit 5 have potentials that allow write / read operations in the storage unit 2 and prohibit these operations in the credit storage unit 6.

When pre-leaving a service, tariff pulses with a frequency corresponding to the amount of payment per unit of service provided from the subscriber terminal device (in particular, a telephone set) are received at the receiver of 7 tariff pulses, from where they are transmitted to the counting inputs of the storage units 2 and 6. When receiving the next tariff impulse, the code of the amount of the remaining advance payment is read from the storage unit 2 of the advance, which through the unit

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The 3 readings are fed to the input of the subtracting unit 4, where the amount is reduced by another tariff pulse.

The code of the resulting amount goes to the inputs of block 1 of the record and block 5 of the analysis, which analyzes the received code, comparing it with the threshold codes in it. If the received code is above both thresholds, which says 6b to the remainder in the credit card of a certain amount of advance payment, block 5 permits the writing of the result code in the storage unit 2 of advance payment. This happens during the entire time the credit card is used until the amount of the advance payment is exhausted.

Upon receipt of the next tariff pulse from the output of the subtracting unit 4 to the input of unit 5 receives a code equal to the first threshold code. At the same time, unit 5 prohibits further writing to advance storage unit 2 and permits writing the received code to credit storage unit 6. At the same time, the analysis unit 5 generates and transmits a signal to the subscriber’s (terminal device) that the advance amount in the credit card has been exhausted. This information is brought to the attention of the subscriber in one way or another: by flashing a special indicator, igniting a warning board, etc. recorded in the credit storing unit 6, the amount of the provided credit grows, i.e. the code of the number of tariff pulses approaches the second threshold laid down in the analysis unit 5.

Upon receipt of the next tariff pulse, after which from the output of the subtractive unit 4, the code of the number of tariff pulses, equal to the second threshold code, arrives at the input of block 5, which prohibits the recording unit 1 from further work, generates and transmits to the subscriber terminal device the service user is terminated.

Claims (1)

Invention Formula An electronic credit card for payphones containing serially connected receiver of tariff pulses, the input of which is the first input of an electronic credit card, an advance storage unit, a readout unit, a subtracting unit and a recording unit, the first output of which is connected to the second memory input, the advance unit, and the second the entry of the recording unit is the second input of the electronic credit card, which means that, in order to realize the possibility of receiving communication services on credit after the amount of the payment has been exhausted advance payment, sequentially connected analysis block and credit storage block are entered, the output of which connected to the second input of the readout unit, and the second and third inputs of the storage unit are connected respectively to the output of the tariff pulse receiver and the second output of the recording unit, the first input of which is combined with the first input of the analysis unit, the second input of which is the third input of the electronic credit card, first and the second outputs of which are the second and third outputs of the analysis unit, the fourth output of which is connected to the third input of the advance storage unit.