JPH0774802A - Small-electric-power cordless telephone set - Google Patents

Abstract

PURPOSE:To use master equipment and a slave equipment as transceivers for a full-duplex communication unless electric power is supplied from a home power supply by providing the master equipment with a driving function which uses a chargeable battery. CONSTITUTION:When a modular jack 13 of a general telephone line is plugged in a battery charging current supply device 11 and inserted into the master equipment 1 or 2 (side elevation or front elevation) through an interface cable 10, the equipment operates as a normal cordless telephone set. In this case, the battery charging current supply device 11 charges a battery 8 and operates as the operating power supply for the master equipment 1 or 2. When the interface cord 10 is disconnected to make the master equipment 1 or 2 independent, the master equipment 1 or 2 operates with the power supply of only the battery 8. In this case, the master equipment 1 or 2 enters the state of only an extension call with the slave equipment and the master equipment itself becomes mobile, so that the master equipment 1 or 2 and slave equipment 3 can be used as specific small-power transceivers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multifunctional low power cordless telephone.

[0002]

2. Description of the Related Art A conventional low-power cordless telephone is used for telephone calls between a master unit and a slave unit or for relaying the master unit as disclosed in Japanese Patent Laid-Open No. 312032/1993, in addition to the purpose of using a telephone line. Calls can be made between handset units.

[0003]

The above-mentioned conventional technique is shown in FIG.
As shown in (4), since the power supply of the parent device 24 is the operation by the supply from the household power source via the AC plug 14,
When the household power supply to the main unit is cut off, the main unit 24 and the sub unit 2
It becomes impossible to make a call between the two and a call between the slave unit 22 and the extension slave unit 23 by relaying the master unit 24. Base unit 2
No. 4 is installed indoors, so that it is inconvenient to carry.

The object of the present invention is to operate the battery inside the master unit and to disconnect the general telephone line from the master unit when there is no power supply from the household power source, like the slave unit. Is to enable the master unit and the slave unit to operate as transceivers for simultaneous transmission / reception calls.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the parent device also has a rechargeable battery, and if there is a power supply from a household power source, use it for the operation of the parent device. , The battery is charged, and when the supply from the household power supply is lost, the battery is used, and it is determined whether it works as a telephone or a transceiver depending on whether or not the general telephone line is connected.

[0006]

[Function] By using the base unit together with the battery drive, when the base unit and the slave unit are operated as a transceiver, it is possible to provide the user with a service similar to that of the specific low power transceiver, and it becomes a versatile telephone.

[0007]

EXAMPLE FIG. 1 shows an example of the present invention. Reference numerals 1 and 2 denote a master unit having a rechargeable battery 8 built-in, and 1 is a side view of 2. When the modular jack 13 of the general telephone line is inserted into the modular jack receiving portion 12 in the battery charging current supply device 11 of the parent device and is inserted into the interface connectors 9 of the parent devices 1 and 2 through the interface cable 10, the ordinary cordless Work as a phone. In this case, the battery charging current supply device operates by inserting the AC plug 14 into the AC power source to charge the battery 8 and also as an operating power source for the base units 1 and 2 of the cordless telephone.
Here, 4 is a speaker, 5 is an outside line / extension switch button, 6 is a dial button, 7 is a microphone, and 19 is an antenna. Reference numeral 3 is a slave, 15 is a battery charger of the slave, and 16 is an AC / DC conversion built-in AC plug.
The master units 1 and 2 and the slave unit 3 use the frequencies of two waves as shown in 17 and 18, and enable the same call.

Here, when the interface code 10 is removed as shown by the arrow 20 and the base units 1 and 2 are made independent, the base units 1 and 2 operate on the power source of only the battery 8,
Since it is also independent of the general telephone line, only the extension call can be made with the handset 3, and the base unit itself can be moved.
And the child device 3 can be used.

[0009]

As described above, according to the present invention, by providing the handset part of the base unit itself with the battery and other control section / wireless communication section, it becomes possible to use the transceiver as a specific low power transceiver. It is possible to provide a user with a service of a specific low power transceiver.

[Brief description of drawings]

FIG. 1 is a diagram conceptually showing an embodiment of the present invention.

FIG. 2 is a diagram conceptually showing a call using a conventional cordless telephone.

[Explanation of symbols]

1 ... Side view of base unit, 2 ... Front view of base unit, 3 ... Front view of handset, 4 ... Handset speaker, 5 ... External / extension / hold switch button, 6 ... Dial button, 7 ... Handset microphone, 8 ... Parent Built-in battery, 9 ... Master interface connector, 10 ... Interface cable, 11 ... AC / DC conversion master battery charging and master power supply device, 12 ... Modular plug part, 13 ... General telephone line modular cord plug, 14 ... AC plug, 15 ... Slave unit charger, 16 ... AC / DC conversion built-in AC plug, 17 ... Communication frequency from master unit to slave unit, 18 ... Communication frequency from slave unit to master unit, 19 ... Antenna, 20 ... Cable pull-out direction, 21 ... Conventional cordless telephone base unit handset unit, 22 ... Slave unit, 23 ... Additional slave unit, 24 ... Conventional cordless unit Telephone main unit main unit, 25 ... Modular code, 26 ... General telephone line, 17a ... Communication frequency from base unit to handset, 18a ... Communication frequency from handset to base unit, 17b ... From base unit to extension handset Communication frequency of 18b ... Communication frequency from the extension slave unit to the master unit.

Claims (1)

[Claims] 1. In a small power cordless telephone, a base unit is provided with a drive function of a rechargeable battery, and when the telephone line is not connected to the base unit and the power supply is disconnected, the base unit is a battery. A low-power cordless telephone that operates as a transceiver between a base unit and a handset when driven by a.