JPS5928733A - Cordless telephone device - Google Patents

Abstract

PURPOSE:To improve the efficiency of line utilization in case of forgotten hook- on, by detecting a busy tone and a howler tone by a connector of cordless telephone to bring the line to an idle line state. CONSTITUTION:A line relay 13 contacts only during calling, a signal from a terminal is inputted to a transmission section 16 and a tone detecting circuit 17 via the relay 13 and a hybrid circuit 14, and the signal inputted to the transmission section 16 becomes a transmission modulating wave and is outputted to a receiving section 32 from an antenna 20. When the busy tone or the howler tone of a telephone exchange is detected at the circuit 17, the detecting signal (a) controls the relay 13 to interrupt the connection to bring the line to an idle line state, and a detecting signal (b) controls the transmission section 16 to interrupt the output to prevent useless power consumption, thereby bringing the line to the idle state, that is, using effectively the assigned transmission and reception frequency.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cordless telephone consisting of a wireless telephone and a connecting device including a wireless device provided on a subscriber line from an exchange, and particularly to a cordless telephone that uses a plurality of radio frequencies in common. The present invention relates to a cordless telephone device.

A cordless telephone device replaces the cord of a regular telephone with a wireless line, and can be carried and used freely within the range of radio waves.

The cordless telephone connection device and the cordless telephone are connected via a wireless line. When a plurality of sets of such cordless telephone devices are provided, problems such as interference will not occur if each set's wireless line is assigned its own individual transmitting and receiving frequency at full blast. However, in reality, in order to make effective use of frequencies, a small number of frequencies are commonly used to increase the efficiency of radio wave use during each call.

Conventional devices like this currently allocate only two sets of transmitting/receiving frequencies (four frequencies) to three sets of cordless telephone devices, and each device can freely select and use these two sets of frequencies. It shall be configured so that it can be done. When a first set of telephone equipment is using the first set of frequencies and a second set of telephone equipment attempts to initiate a call, it detects that the first set of frequencies is being used. , automatically switches to another second frequency set and sets up all wireless lines. In this state, when the sixth set of telephone devices tries to start a call, it is detected that the set of two transmitting and receiving frequencies is being used, and the line connection becomes impossible.
It is set to wait until one of the frequency pairs becomes available.

Therefore, in such a conventional device, the number of available frequency pairs and the number of cordless telephone device pairs are each constant, and in order to minimize the probability that one line cannot be connected, the time when all nine lines are in use is Just make it as short as possible. To achieve this, it is necessary to immediately set the line to an idle state after a call ends, and to minimize the amount of time the line is left on hold unnecessarily when there is no call. However, with the devices actually used in the past, the above-mentioned measures could not necessarily be realized. That is, in conventional cordless telephones, when a call ends, the cordless telephone subscriber promptly goes on-hook to determine that the call is over. Therefore, if a cordless telephone subscriber forgets to go on-hook or goes on-hook incompletely even though the other subscriber has ended the call, the line will remain on hold unnecessarily and other This has the drawback that a subscriber cannot use the set of reserved frequencies, resulting in wasted lines and a nuisance to other subscribers.

Therefore, an object of the present invention is to provide a cordless telephone device that can quickly idle the line even if a single person with cordless telephone power does not completely go on-hook at the end of a call, and can effectively utilize all the allocated frequencies. That's what you're trying to get.

The present invention relates to a cordless telephone connection device.

A tone detection circuit is provided to detect all busy sounds or howler sounds from the exchange and forcibly set the nine lines to an idle state.

According to the present invention, the connecting device and the telephone are connected to a terminal of a telephone exchange, each having a transmitting section and a receiving section, and connected to each other by a wireless line, and all lines of input signals from the terminal are connected to the terminal. In a cordless telephone device in which a signal is transmitted from a transmitter in a connecting device to a receiver in a telephone via a relay, the connecting device includes a tone detection circuit that outputs a detection output when a busy tuning fork detects a howler sound from the input signal. There is obtained a cordless telephone device characterized in that it comprises means for disconnecting at least the line relay based on the detection output.

Next, a detailed explanation will be given with reference to the drawings.

FIG. 1 is a diagram showing the configuration of a first embodiment of the present invention. In FIG. 1, a connection device 10 has input/output terminals 11 and 12 connected to subscriber lines of a telephone exchange, a line relay 13 connected to the input/output terminal 11, and a line relay 13 connected to the input/output terminal 12. (connected) hybrid circuit 14 (a circuit that converts the 2i line into a 2-wire signal sent to and received from the transmitting section and the receiving section), the receiving section 15 connected to the hybrid circuit 14, and the transmitting section 16. 1
Tone detection circuit 17 and control section 18 especially provided in the present invention
, a receiving antenna 19 connected to the receiving section 15, a transmitting antenna 20 connected to the transmitting section 16, and a power source B that supplies all the power to each device. The disconnected telephone 60 includes a transmitting section 61, a receiving section 32, and a handset 63.

In the two-distribution configuration, a signal from the transmitting section 31 of the cordless telephone 30 is received by the receiving antenna 20, demodulated by the receiving section 15, and sent to the subscriber line of the telephone exchange via the vibe lid circuit 14 and line relay 13. sent to. The line relay 15 is connected only during a call. A signal from the terminal is input to the transmitter 16 and tone detection circuit 17 via the line relay 13 and hybrid circuit 14.

The signal input to the transmitter 16 is converted into a transmit modulated wave and output from the transmitter antenna 20 to the receiver 32 of the telephone 20.

Now, in this invention, when the tone detection circuit 17 detects a busy tone or a buzzing tone from the telephone exchange, the line relay 13 is controlled by the detection signal aK- to disconnect the line and leave the line idle. Furthermore, it is possible to control the transmitter 16 based on the detection signal bVc and cut off its transmission output, thereby preventing wasteful consumption of power. In this case, what is particularly important is the emptying of the former line, that is, making it possible to effectively utilize all the allocated transmitting and receiving frequencies.

FIG. 2 is a diagram showing the configuration of a second embodiment of the present invention. In FIG. 2, the same components as in FIG. 1 are given the same reference numerals.

The connection device 40 in this embodiment includes a call termination signal generation circuit 41 which inputs the detected output b1 when the l-1 line detection circuit 17 generates the detection output b1 and generates a call termination signal C, and a receiving unit 1.
A disconnection signal detection unit 42 is provided which generates a transmission output disconnection signal ef when detecting a disconnection signal (d) to be described later from 5.
The cordless telephone 50 has a call-off signal detecting unit 51 that emits a detection signal f (i-) when the above-mentioned call-end signal cf is detected in the signal received by the receiving unit 32, and a disconnection signal d that generates a disconnection signal when it receives the detection signal fi. A generator 52 and an indicator 53 are provided which, upon receiving the detection signal f, emit a signal sound or flashing light indicating that hook-on is not complete.

With the above configuration, when the handset 36 is not completely on-hook and the busy tuning fork detects a howler sound from the signal from the telephone exchange in the connection device 4o, the line relay 1
6 is disconnected, a call termination signal C is wirelessly sent from the transmitter 16 to the telephone 50, and the telephone detects the termination signal cf, obtains a disconnection signal di, and transmits it back to the connection device 40 wirelessly. All output points of the transmitting section 16 are assumed. In the disconnected telephone 50, the indicator 53 is activated by the signal f that detects the end call signal C to notify the user that he has forgotten to go on-hook or that he has not done it correctly. Yes.

It is also not necessary to use it.

As explained above, in the present invention, when a busy tone or a howler tone is detected in the connection device of a cordless telephone device connected to a terminal of a telephone exchange, the line is set to a completely empty state, so that This has the effect of preventing wasteful use of the line in case you forget.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a circuit configuration of a cordless telephone device according to a first embodiment of the present invention, and FIG. 2 is a diagram showing a circuit configuration of a second embodiment of the present invention. Explanation of symbols: 10 is a connection device, 13 is a Vi line relay, 14 is a hybrid circuit, and 15 is a receiver. 16 is a transmitting section, 17 is a tone detection circuit, 18 is a control section,
30 is a telephone, 31 is a transmitter, 62 is a receiver, 41 is a call termination signal generator, 42 is a disconnection signal detector, 51 is a disconnection signal detector, 52 is a disconnection signal generator, and 53 is an instruction unit. It's raining.

Claims (1)

[Claims] 1. Consists of a connecting device and a telephone connected to a terminal of a telephone exchange, each having a transmitter and a receiver, and connected to each other via a wireless line, and capable of receiving input signals from the terminal. In a cordless telephone device in which the information is sent from a transmitter in a connecting device to a receiver in a telephone via a line relay,
The connection device is provided with a tone detection circuit that outputs a detection output when a busy tuning fork detects a howler sound from the input signal, and means for disconnecting at least the line relay based on the detection output. A cordless telephone device featuring: 2. It is connected to a terminal of a telephone exchange, and is composed of a connecting device and a telephone, each having a transmitting section and a receiving section, and connected to each other by a wireless line, and transmitting input signals from the terminal via a line relay. In a cordless telephone device in which data is sent from a transmitter in a connecting device to a receiver in a telephone,
The connection device includes a tone detection circuit that outputs a detection output when the busy tuning fork detects a howler sound from the input signal, a means for disconnecting the line relay based on the detection output, and a terminal that receives the detection output. A call-end signal generation means that generates a talk signal and inputs it to the internal transmitter for transmission, and disconnects the output of the internal transmitter when a disconnection signal, which will be described later, is detected from a received wave of the internal receiver. disconnection signal detection means for transmitting a signal that should become the above-mentioned disconnection signal to the telephone internal transmission unit when the telephone set detects the call termination signal from the signal sent from the connection internal transmission unit; 1. A cordless telephone device comprising: means for inputting information to a user.