DE2757369A1 - Telephone call charge calculator - has pulse counter coupled to adder and operated by clock generator and memories for charge rate - Google Patents

Abstract

A telephone charge computing system uses generated pulses that are processed to provide the cost of calls made either on the normal telephone system or radio connected call systems. For normal calls the charge is composed of a basic amount plus a time dependent amount. A clock generator provides a time base for the system and the base charge is made using memories and entered data. A binary counter monitors the ongoing charge. This result may then be entered to the input register to an adder to allow the total cost to be evaluated.

Description

Title: Digitally indicating 'post-independent working small

Computer for calculating the local and long-distance call roar when in use the telephone switching equipment.

Application area: households, offices, restaurants.

Purpose: to calculate and estimate the number of calls made during a telephone call accruing C.

State of the art: Oebührenzounter are known, which are electric and are to be coupled electromechanically to the telecommunications equipment. These billing meters show the number of girdle impulses occurring during a Goscall.

Criticism of the state: The mentioned billing meters are to the Pernsprechvermittlungseinrichtung to be coupled and therefore chargeable. They show the number of already accrued Charge impulses, this makes it difficult to estimate the charges that arise in the course of the conversation financial cost.

Task: The aim of the invention is to respond during a telephone call accruing fees and the arrival of another hearing impulse from one Calculate or announce the small computers that are not to be coupled to the telecommunication devices allow.

Solution to the problem: (reproduction of the characterizing parts of the invention).

Inventive solution: For calls tied to a time cycle over the telephone switching network of the Deutsche Bundespost are defined in Intervals between charge impulses. The charge on pulses clock the charge counters the Federal Post Office; These goggle impulses are simulated by the small computer. the simulated charge impulses star the gob charges account in the small computer; the Calculation of the fees in the small computer is based on the following equations: Equation 1: G = CT.K + GT.N (for local calls) in DM Equation 2: G = GT.K + (GT.M) / Z (for long distance calls) in DM It means: G - accrued charges for a phone call, GT - fee per fee unit, Z - speaking time per fee contribution in seconds, K - freely selectable factors, N, M - ahl of the charges simulated by the small computer,; hrenim pulse.

To indicate the arrival of a further charge pulse, a Proposed binary payer, which is talked by the simulated charge impulses and which triggers a signal from a point in time to be determined, which means the arrival announces another charge impulse.

Example: The following description refers to the in the following drawing (Fig. 1) reproduced scheme.

Fg. 1: Exemplary embodiment of the invention shown in the form of a Block diagram.

Compilation of the symbols used in Fig. 1: NS - power switch EM - input medium GAS - storage element GPZ-S - storage element ADD - adder AR - working register AN - display medium GA - part of the display medium AN. Charge display VA - part of the display medium AN'Pre display OTL-Z - binary counter VAG - logic gate OF - switch TG - clock generator GT - basic tariff GPZ - fee nro simulated clock pulses Z - timing according to AVON of the D8P OTL - timing interval in the local tariff TI - timing pulse simulated TIO - clock pulse simulates i) - - data and command direction with brackets for the current number.

To operate the small computer: The fees are calculated according to the equations 1 and 2 are calculated, the following data must be entered into the calculator: 1. The basic tariff (GT) or the product of (IT K ins AR, 2. The value GPZ = GT / Z in the (PZ-S.

3. The addition instruction '+' the addition is carried out if a Clock pulse (TI or TIO) at the input '=' of the adder ADD is for the adder ADD.

4. The transmission error, if a non-erasable memory for the Basic tariff and the addition instruction is provided. The @rundtarif and the addition instruction are then written to the appropriate registers by the transfer command.

The small computer knows five operating states: Operating state 1: Out of order.

2: data entry.

3: The called party answers.

4: Calculation of fees.

5: End of call.

When used appropriately, the five operating states To be traversed one after the other.

Operating state 1: The small computer is in the 'Not' state Operational '; Mark; The power supply is switched off, the power switch (NS) is in the rest position 'AD'.

operating status 2: data entry Entering the basic tariff: the basic tariff (GT) must be written into the aridity register (AR), two ways are possible.

Path 1 is suggested if the minicomputer does not work with one erasable Orundtarif and addition instruction memory (GAS) is provided. The GAS must contain the basic tariff and the addition instruction. The basic tariff is in this case transferred by a transfer command from the GAS to the AH.

The eg 2 is suggested if either no GAS or a different one should be written in the AR as the basic tariff stored in the GAS Route 2 writes the data from the input medium (EN) to the AR.

Entering the addition statement: The addition statement includes: Add to the content of the AH that of the GPZ-S and save the calculated sum in the AR. Is If a GAS is present, the addition instruction is written in with the transmission instruction.

Is there a GAS available or should a different one than the one stored in the GAS be If the basic tariff is written into the AR, after entering the basic tariff, the Addition instruction can be given.

Entering the GTZ tariff: The GPZ tariff is valid after every addition and to write into the GPZ-Spocher (GPZ-S) after each transmission command. sure also path 3.

Operating state 3: If the called party answers, the switch is OF for local calls in the direction of 'OG' and for long-distance calls in the direction of FG ' to lay. After flipping the OF switch in one of the two directions begins the calculation of the mountains.

Operating state 4: After pressing the OF switch, the clock generator is activated set by this in operation.Der clock generator generates clock pulses (TI); the Charging starts - it ends when the OF switch is back to the position 'AD' is brought.

Local calls: When making a local call, the TI-1mpu1sei the counter OTL-Z clocked. The OTL-Z runs backwards, it starts in the position 'OL', passes through the 'VA' position and jumps after reaching the 'ZERO' position back to its maximum value of 'OTL'.

The OTL-Z is activated during operating state 2 with the addition instruction or set to its initial value with the transfer command - see path 4.

1) as the product of the period of the clock pulses (TI) and the decimal The value of the counter (OTL-Z) in the 'OTL' position corresponds to the time between two Charge impulses in the local tariff of the i½indespost.

i) as the product of the period of the clock pulses (TI) and the decimal The value of the counter in the 'VA' position corresponds to the time after which the The next charge impulse is to be expected; the value 'VA' can be freely selected within limits.

If the counter reaches its position 'VA', the VA gate (VAG) switched to 'pass for TI impulses'.

The part VA of the display medium (AN) solves in the rhythm of the TI frequency a preview signal. The preview disappears when the OTL-Z counter has reached its position 'NITLL' has passed through, it then triggers a TIO pulse and thus sets itself back to its highest value 'OTI'.

The occurrence of a TIO pulse at the '=' input of the ADD addicrers initiates the execution of the addition instruction entered in operating state 2.

Long distance calls: In the case of a long distance call, the clock pulses (TI) at the input '=' of the adder ADD initiates the execution of the addition instruction.

Operating state 5: If a call is ended, the switch is on OF to bring it back into position AD '.

The fee calculation is then ended - the accumulated fee amount remains displayed.

Claims (3)

Patent claims: 1. Charging log for local calls, thereby marked'd that the charging impulses of the switching facilities of the Germans Pundespost in the small computer are simulated that the accruing charges according to equation 1 of the section 'Inventive solution' and that the logic a clock generator (TG), a changeover switch (OF), a binary counter (OTL-Z), a Adder (ADD), a memory (CPZ-S), an aridity register (AR) 'a memory (GAS), an input medium (EM) and a display medium (AN) arranged as in FIG. 1 contains. 2. Billing logic for long distance calls, thereby eichnet that the charge impulses of the switching facilities of the Deutsche Bundespost a charge pulse train can be simulated that the charges according to equation 2 of the Section 'inventive solution are calculated and that the logic is a clock generator (TG), an adder (ADD), a memory (GPZ-S), a switch (OF), a working register (AR), a memory (GAS), an input medium (EM) and a display medium (AN) such as arranged in Figure 1 contains. 3. Advance charge, characterized in that the arrival a further charge impulse after a defined period of time by an optical Signal is announced that the logic has a clock generator (TG), a counter (OTL-Z) , a logic gate (VAG) and a display medium (VA) arranged as in FIG contains.