JPH03123154A - Communication system equipment - Google Patents

Abstract

PURPOSE:To prevent the equipment from becoming inoperable due to disconnection of a power source by supplying electric power to a dial number designating means from a current from a telephone circuit. CONSTITUTION:An SW 11 for switching a battery power source 14 contained in an attachable/detachable card device 13 and a main equipment power source V is selected to an A side when the main equipment power source V is turned on. When a switch 2 is turned on and a DC circuit is closed, a current flows to an LED 4 from a circuit 1 and the LED 4 is turned on, an output light is radiated to a photovoltaic diode array 5, and by its output voltage, a main controller 10 is driven. Also, when a power source Vcc (commercial power source) of a main equipment 100 is turned on, a switch 9 is switched to the A side, and it is driven by Vcc. In such a way, when a card is carried and used, it is driven by a battery 14 of the card, and when it is set to the main equipment 100 and used as a calling equipment, it is driven by the main equipment or a station power source (at the time of service interruption), therefore, high reliability is secured.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication system device that can use a so-called electronic telephone directory.

[Prior Art] Conventionally, a removable electronic telephone directory is equipped with a battery such as a lithium battery inside the device, and operates on the battery not only for storing memory but also when making a call.

[Problems to be Solved by the Invention] However, in the above conventional example, when performing calculations using the electronic telephone directory, power consumption is low and the battery lasts long, but when making a call, power consumption is large and the battery may run out. The disadvantage was that it occurred frequently.

[Means for Solving the Problems] The present invention includes a capturing means that captures a line when a connection of a dial number specifying means is detected, a light emitting means that emits light by a current from the telephone line, and a photoelectric conversion of the light emitted by the light emitting means. By providing a power supply means for supplying power to the dial number designation means, the dial designation means can be driven by current from the telephone line.

[First Embodiment] FIG. 1 is a block diagram of the first embodiment of the present invention. In the figure, 100 is a facsimile machine which is the main device, 1 is a telephone line, and 2 is a block diagram for connecting a DC circuit. 3 is a letter coil that holds the DC circuit, and 4 is an LED that emits light with the current of the DC circuit.
(light emitting diode), which are provided in the phase direction so as to emit light regardless of the polarity of Ll and L2.

5 is a photovoltaic diode array (solar cell or blue cell) that receives the light from LED 4 and generates an electromotive force, 6 is a load resistor, 7 is a capacitor that cuts direct current, and 8 is insulated from alternating current signals. The audio transformer 9 is a switch that switches between the facsimile power source obtained from the commercial power source Vcc and the power source obtained from the solar cell. When the facsimile power source is on, the A side in the figure is selected.

Reference numeral 11 denotes a SW for switching between a battery power supply 14 built in the removable card device 13 and a main device power source 2. When the main device power source V is on, the SW is selected to the A side in the figure. Reference numeral 12 denotes a dial calling card device which instructs the main controller 10 to dial a number by a voice signal and an optical signal. 13 is a removable calling card device, 14 is a battery such as a lithium battery, 1
0 is a main control device that controls these, and in response to instructions from the dial calling card device 12, operates switch 2 when in dial pulse mode, and operates switch 2 from audio transformer 8 when in DTMF (dual tone multi-frequency) mode. Send out a signal by combining.

20 is a connector for supplying power from the main device 100 to the card device 13, and the card device 100 can be attached to and detached from the main device 20 via the connector 20.

Next, the basic operation will be explained.

FIG. 2 is a flowchart showing these steps.

Card 13 is not set in main device 100 (step S1
), when the card is carried, that is, when not connected to the connector 20 (step S2), the card is operated by the built-in battery 14 (step S3). In addition, the main device 1
Even if it is set to 00, if power cannot be obtained (step S4), the battery will be used in the same way.

Next, even if power can be obtained from the main device 100, if the AC power is turned off or there is a power outage (step S5), the local power supply will be used.

First, it is checked whether the line is off-hook (step S6), and if it is not off-hook, switch 2 is turned on (step S7) to close the DC circuit.

When the DC circuit is closed, current from the line flows through the LED 4 and the LED 4 lights up. Next, the output light is irradiated onto the photovoltaic diode array (solar cell) 5, and the output voltage drives the main controller (step S8). Further, when the power (VCC) (commercial power) of the main device 100 is on in step 5, the switch 9 is switched to the A side,
Drive with Vcc (step S9).

As explained above, when carrying and using the card,
Powered by the card's battery, set it in the main device,
When used as a calling device, the main device or station power supply (
(at the time of power outage), which is common in portable devices,
When the battery runs out, there is no power at all, so high reliability can be ensured in use.

In addition, even when the commercial power supply is OFF, such as during a power outage, by closing the DC circuit, the light emitting element is turned on, and its output light is irradiated to the solar cell, which is electrically insulated from the line. Communication device (secondary side device) that does not require commercial power when making a call because the next side control device can be driven by the station power supply
It has the advantage of being able to realize

[Effects of the Invention] According to the present invention, reliable power supply is achieved by supplying power to the dial number designating means from the current from the telephone line. Therefore, it is possible to prevent the device from becoming inoperable due to a power outage.

FIG. 1 is a flowchart diagram for explaining in detail the twenty-first invention.

2 is a hook switch, 4 is an LED, 5 is a photodiode array, and 1 3 is a calling card device.

Claims (1)

[Scope of Claims] Capturing means that captures the line upon detecting connection of the dial number designating means; Light emitting means that emits light using current from the telephone line; and Dial number designation means that photoelectrically converts the light emitted by the light emitting means. A communication system device characterized by a power supply means for supplying power to the.