JPH02174349A - Cordless telephone system with holding function - Google Patents

Abstract

PURPOSE:To improve the operability by hooking off a handset after the holding operation and releasing the holding state after the handset is hooked on. CONSTITUTION:When a slave set 30 is hooked on after holding is applied, it is discriminated that the incorporation, that is, the accommodation into a master set 1 is executed and the incorporation is discriminated by detecting a charging voltage. When hook-off state is caused to start talking from the holding state because of the end of the necessity for holding, the separation is discriminated. The separation is implemented depending on the non detection of the charge voltage and the slave set 30 sends a separation signal. Since the separation signal is received by the master set 1, the master set 1 applies the processing of holding release. Thus talking is restarted by having only to lift up the handset by the subscriber and it is not required to depress the holding button again.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a telephone device main body (PA device) and a handset (slave device).
This invention relates to a cordless telephone device with a hold function that transmits signals between users via a wireless line.

[Prior Art] In recent years, cordless telephone devices have become popular, allowing calls to be made from any location without being restricted by the length range of a telephone cord. In this telephone device, the handset serves as a handset, and the main body that houses the handset serves as a base unit. When the slave unit is housed in the base unit, power is supplied from the base unit to charge the battery of the slave unit.

Charging stops when you start using the handset, but the handset can continue to make calls as long as its internal battery has enough capacity.

In this telephone, an operating section is provided in a handset, and the handset is housed in the main body when on-hook. Therefore, for design reasons, the operating section is provided on the inner side of the handset, as shown in FIG. 3, so that it is not exposed to the outside when on-hook.

[Problem to be Solved by the Invention] With this configuration, when the user goes on-hook after performing a hold operation, and then goes off-hook again and starts a call, the hold button must be pressed again. It was really annoying.

[Means for Solving the Problems] In order to solve these problems, the present invention is designed to release the hold when the handset goes off-hook.

[Operation] After being set on hold and on-hook, when off-hook is detected, the slave unit sends a hold release signal to the base unit, and the base unit that receives the signal performs processing to release the hold.

[Embodiment] FIG. 2 is a block diagram showing an embodiment of the present invention.
In the figure, a telephone line (office line) L is connected to a telephone line 2 of a base unit 1 via a rectifying diode bridge 3 and a dial pulse sending transistor 4.The telephone line 2 is connected to a telephone line L that is connected to a telephone line L through a rectifying diode bridge 3 and a dial pulse sending transistor 4. This circuit is connected to the wireless transmitter/receiver 7 via a signal line 5 for receiving calls and a signal line 6 for sending calls. The wireless transmitting/receiving section 7 is composed of a transmitting section, a receiving section, a synthesizer section, and a duplexer.
11! performs wireless communication with the wireless transmitting/receiving unit 31 of l;
An incoming call detection circuit 9 is connected to the telephone line in parallel with the communication circuit 2 via a diode bridge 8, and its output signal line is connected to a CPU10 that controls the entire base unit 1.

The base unit 1 is equipped with a power supply circuit 12 that is connected to an AC power source via an AC adapter 11, and various circuits within the base unit 1, including the wireless transmitting/receiving section 7, are supplied with power from this power supply circuit 12. is driven by the receiver. In addition, this power supply circuit 12
is adapted to supply a charging current also to a battery 32 built in the handset 30, and is connected to a charging current output terminal 18 via a current detection circuit 16 and a diode 17. The power supply circuit 12 is connected to a backup battery 13 in case of a power outage, a power indicator 14, and a voltage detection circuit 15 for detecting a power outage, thereby taking measures against power abnormalities such as power outages.

Charging current is supplied from the power supply circuit 12 to the battery 32 of the handset 30 when the handset 30 is placed at a predetermined location on the base unit 1.
charging current output terminal 18 and charging current input terminal 33 of the slave unit.
By connecting the slave unit 30 to the base unit 1, the supply of charging current is stopped. Therefore, it is possible to detect whether the slave unit 30 is separated from the base unit 1 based on the detection output of the current detection circuit 16. In this way, the output signal line of the current detection circuit 16, which functions as a means for detecting separation between the slave unit 30 and the base unit 1, is connected to the CPU10.

Also, a dial IC 19 generates a dial pulse (DP) by driving and controlling the transistor 4 based on dial information from the handset 30 (given via CPUIO), and generates a signal tone for generating a ringer tone, etc. 20, an antenna 21 for performing wireless communication with the handset 30, and the like. The dial IC 19 is provided with a buffer for dialing, and a redial number is read from this buffer for redialing.

Reference numeral 22 denotes a hold circuit, which performs processing such as putting the line on hold, sending out a hold melody, and canceling hold, in accordance with instructions from cputo.

The sea urchin is turning.

On the other hand, the child 1130 is also provided with a wireless transmitting/receiving section 31, to which a piezoelectric receiver 35 is connected via a receiving signal line 34, and a condenser microphone 37 is connected via a transmitting signal line 36. Through this communication between the wireless transmitting/receiving section 31 and the wireless transmitting/receiving section 7 of the base unit 1, the piezoelectric receiver 35 and the condenser microphone 37 operate as if they were directly connected to the R terminal and the T terminal of the communication circuit 2, respectively. Become. A voltage detection circuit consisting of resistors 38 and 39 is provided between the battery 32 and the charging current input terminal 33, and its detection output is connected to the C which controls the overall control of the slave unit 30.
It is designed to be given to P U 40. Similar to the current detection circuit 16 of the base unit 1, this voltage detection circuit functions as a means for detecting whether the base unit 1 and the slave unit 30 are separated, and if the detected voltage is zero, It can be seen that they are separated. The voltage value detection circuit 41 is a means for detecting a dead battery of the battery 32, and its output signal line is also connected to CP.
Connected to U40. Note that the diode 42 is for preventing backflow, and the diode 43 functions as a power lamp.

The handset 30 includes an operation unit 44, which is provided with a numeric keypad, as well as function keys such as a speed dial key, an end key, a hold key, and a setting function confirmation key.

The speed dial key is the key to operate when setting speed dial, the end key is the key to end the call from the call state and enter the standby state, the hold key is the key to put the call state on hold.The function setting confirmation key is the child key. When the device 30 is located far away from the parent device l, this parent device tl! ! This key is pressed to control the function set to t.

In addition, the handset 30 includes a signal tone generator 45 and an antenna 46.
etc. are provided.

Next, the operation of this device will be explained with reference to the flowchart in Figure 1. Figure 1 is a flowchart showing the operation when the call is put on hold during a call. This is a flowchart of the machine. When performing a hold operation, the hold key is pressed on the slave unit as shown in step 100, and a hold signal is sent from the slave unit to the base unit as shown in step 101. When this signal is received by the base unit as shown in step 200, the base unit performs a hold process as shown in step 201. Through this hold processing, the line is put on hold and a hold melody is sent to the line and handset.

Thereafter, when the child device is on-hook, it is determined that it has been combined, that is, housed in the parent device, as shown in step 102. This merging is done by sensing the charging voltage. If the call is placed in an off-footer state in order to start a call from the hold state due to reasons such as the requirements for the hold being completed, separation is determined as shown in step 103.

This separation is caused by the inability to detect the charging voltage. This causes the handset to send out a separation signal as shown in step 104.

Since this separation signal is received by the base unit as shown in step 202, the base unit performs a hold release process as shown in step 203. This allows the subscriber to simply pick up the handset and resume the call without having to press the hold button again.

The above is the behavior when on-hook after being put on hold.
It may not go on-hook after performing a hold operation. At this time, step 102 is rNo.

When it is determined that the hold key is pressed as shown in step 105, a hold release signal is sent as shown in step 106. This signal is received by the base unit as shown in step 204, and the hold release process is performed as shown in step 203.

[Effects of the Invention] As explained above, the present invention has the effect of improving operability since the on-hook is performed after the holding operation and the holding state is released when the off-hook state is subsequently established. has.

[Brief explanation of the drawing]

FIG. 1 is a flowchart explaining the invention in detail, FIG. 2 is a block diagram showing one embodiment of the device, and FIG. 3 is a perspective view showing the operating section of the handset. ■...Base unit, 7, 31...Wireless transmitter/receiver, 10
．． 40...CP LJ, 25...Message sending section, 30...Slave device, 32...Battery, 41...
...Voltage value detection circuit. Patent applicant Tamura Electric Manufacturing Co., Ltd. Agent Masaki Yamakawa (and 2 others) Figure 3

Claims (1)

[Claims] Consisting of a base unit connected to a central office line and a slave unit wirelessly connected to the base unit, the base unit and the slave unit transmit signals via the wireless line, and the line A cordless telephone device with a hold function having a hold function includes: a hold release signal sending means provided in the handset for sending a hold release signal to the base unit when off-hook is detected; 1. A cordless telephone device with a hold function, characterized in that the cordless telephone device has a control means provided in a base unit to release the hold based on a hold release signal.