DE2851512A1 - Electronic telephone payment indicator - displays total running cost, individual unit and progressive call costs with maximum monitor - Google Patents

Abstract

The electronic telephone payment indicator can be attached to an existing telephone set or form part of a set. The indicator gives a continuous digital reading of the cost of a telephone call in progress. The cost per unit is inserted in a programmable calculator module. A maximum coil can be inserted and, when the call cost reaches this maximum, a light flashes. The indicator has a quartz controlled clock which indicates the date, time and the relevant cost per unit. The total cost pulses are stored in a counter which is reset by a switch, and the cost pulses for the call in progress are stored in a second counter which is reset at the end of the call.

Description

Title: Device for displaying telephone charges with

Maximum guard and display of the tariff application The invention concerns an electronic device area: as an additional device to telephone sets, which is set up next to telephone sets and connected to them or is integrated in their housings.

Purpose: The device fulfills the following functions: 1. Digital display the conversation units per conversation and billing period (e.g. per month), 2. Continuous numerical display of the call costs per call with programmable Unit factor, 3rd visual display by flashing light of an adjustable maximum value. The flashing light is triggered if a preselected charge amount during a call is reached, 4. Display of the currently valid tariff with b; special warning sign for night fee II.

Criticism of Die Post offers unit counters, which, however, stand who miss the comfort mentioned above.

'Pechnik: Task: The device should be available to the telephone subscriber during the Make exact information about the current call costs and with the help of the Msximumswächers should contribute to unintentionally high fee costs to avoid.

Solution: The telephone charge display device is galvanically connected to the telephone connected or inductively to the stray field with an adapter; of the transformer coupled. to receive the 16 kHz charge pulses.

The pulses are fed to an electronic pulse counting circuit, which counts the impulses continuously (reset with key holder).

A second counting counts the impulses per call. Provision if the audio frequency is missing, i.e. when you hang up the handset.

The second counting system is a programmable computer (integrated Circuit) downstream, the fee amount in DM or calculated in another currency and. made visible on an LED or LCD display. The cost display is updated continuously. By pressing a button, the cost display be set to zero. Eggs unit price is programmable. With a toggle switch the first counter can also be switched to the computer, whereby the accumulated Total amount can be read off with the aid of a decimal-coded preselection switch (Coding switch) the computer is programmed so that when a. selected Maximum amount an output signal is given to a flashing circuit, which is a Flashing signal lights up The device contains an electronic quartz-controlled Movement with digital display of the time and calendar with the programmed ones and stored tariffs (day charge, night charge I, night charge II).

An LCD display automatically shows the current tariff. The night charge II is also displayed with a light-emitting diode.

The circuit construction is done with known integrated Circuits, memory and computer modules. The creation of a device-specific integrated large circuit, which contains the entire circuit of the device, is possible with economical quantities. The number of units of conversation that Costs, the time, time and calendar are shown with the help of liquid crystal displays or LED displays made visible. The device receives a battery or an accumulator with power supply unit for power supply.

Claims (1)

Patent telephone charge display device claims: characterized by 1. Continuous display of the call costs with a programmable unit factor, 2. adjustable maximum monitor with visual warning sign, 3. display the current fee tariff with special display of the discounted night tariff II.