JPH0720976Y2 - Cordless phone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a cordless telephone composed of a master unit connected to a telephone line and a slave unit connected to the master unit by wireless communication. More specifically, the present invention relates to a cordless telephone which enables off-hook dialing and hands-free calling by a handset even when placed on a desk or the like.

(Prior Art) In general, cordless telephones use wireless communication so that they can be moved around freely within the radio wave coverage (calling area) between the base unit and the handset, without being bothered by the cords of the conventional telephones. It has become popular rapidly in recent years because of its advantages.

As a structure of a cordless phone in such a cordless telephone, it is equipped with an earpiece and a microphone like a handset of a wired telephone, and as a result of removing the so-called curl cord in the wired telephone, wireless communication with the parent device is performed. It is configured to newly include a wireless unit, a secondary power supply, a dial key and the like for performing the operation.

(Problems to be solved by the invention) Therefore, when making a call, a satisfactory call cannot be made unless the handset is picked up, the earpiece is placed on the ear, and the microphone is brought close to the mouth, like a handset of a wired telephone.

In particular, when dialing, first press the call button (off-hook button) with the cordless handset away from your ear, then put the earpiece on your ear to check the dial tone, then release it from your ear again to operate the dial. There was a problem that it had to be done. If zero transmission is required, the work of putting it on the ear and releasing it again is required.

In addition, even during a call, when both hands are closed, there is a problem that the child device needs to be supported by being sandwiched between the shoulder and the cheek, or in some cases, placed on a desk or the like. In addition, when the handset is supported by the shoulders and cheeks, or when placed on a desk or the like, the hook button is accidentally hit and the call is cut off.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a cordless telephone that enables a telephone call without picking up the cordless handset from a desk or the like and also enables an off-hook dial or a hands-free call by the cordless handset. To provide.

(Means for Solving the Problem) In order to solve the above problems, a cordless telephone of the present invention comprises a master unit connected to a telephone line and a slave unit connected to the master unit by a wireless line. Applies to a cordless telephone in which a slave unit is connected to a telephone line via a master unit by operating an off-hook button of the device. The slave unit includes an earpiece, a speaker with higher output, and an operation of the off-hook button. In response to the control means for turning on the speaker, and a changeover switch for arbitrarily turning on and off the speaker in an off-hook state.

(Function) By operating the off-hook button of the cordless handset, the high-output speaker is turned on, and the dial tone is sent from this speaker with a sound such as "two". Then, by dialing the telephone number. , "Toruru ..., Toruru ..."
A ringing tone of such a sound is sent out. Also, during a hands-free call, the other party's voice is sent out via the speaker. Since the speaker has a higher output than the earpiece, the user of the cordless handset can check the dial tone and the like even when the cordless handset is placed on a desk or the like, and can also perform a hands-free call.

In addition, by operating the selector switch during a call, the high-output speaker is turned off, and then a normal call by the earpiece is switched, or by operating the selector switch during a normal call by the earpiece, the high-output After turning on the speaker, it is possible to switch to a hands-free call using the speaker.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the electrical configuration of the cordless telephone of the present invention.

In the figure, the output of the antenna 8 which forms a bidirectional wireless line with the antenna of the master unit (not shown) is connected to the wireless transmission / reception unit 9 and is transmitted from the master unit. The output of the wireless transmission / reception unit 9 for transmitting the voice signal of the caller is connected to one end of the earpiece switch 10 and one end of the speaker switch 11, respectively. The other end of the earpiece switch 10 is connected to the built-in earpiece 2 through the earpiece amplifier 13 and the speaker switch.
The other end of 11 is through the speaker amplifier 14,
It is connected to a newly provided speaker 3. Also,
The output of the built-in microphone 4 is connected to the other end of the microphone switch 12 through the microphone amplifier 15, and one end of the microphone switch 12 is connected to the wireless transmission / reception unit 9.

On the other hand, a microcomputer that controls each unit in the handset 1.
16 and the wireless transmission / reception unit 9 are bidirectionally connected, and the wireless transmission / reception unit 9 is a microcomputer.
The control signal from 16 performs a predetermined operation. Further, the microcomputer 16 is adapted to receive various kinds of information regarding establishment of a communication line between the master unit and the partner terminal via the wireless transmission / reception unit 9.
Further, the output of the off-hook button 5 and the output of the speakerphone button 6 and the output of the dial button 7 including a numeric keypad are led to the microcomputer 16, and the microcomputer 16 outputs the switch for the earpiece.
A switching control signal indicating the timing of each switching operation is sent to each switching control input of 10, the speaker switch 11 and the microphone switch 12.

FIG. 2 shows the external appearance of the cordless telephone having the above configuration.

That is, the antenna 8 that forms a bidirectional wireless line with the antenna on the master side is provided on the upper part of the handset 1, and the earpiece 2 is built on the upper part on the front side. . An off-hook switch 5 and a small speaker 3 having a higher output than the ear piece 2 are provided immediately below the earpiece 2, and a dial button 7 including a numeric keypad is arranged below the off-hook button 5 and the speaker 3. There is. A speakerphone button 6 is provided below the dial button 7, and a microphone 4 is provided at the bottom of the handset 1.
However, the arrangement of the buttons and the arrangement of the parts are not limited to the arrangement shown in FIG.

Next, the operation of the cordless telephone having the above configuration will be described by taking an example of on-hook dialing.

As an initial state of operation, the earpiece switch 10, the speaker switch 11, and the microphone switch 12 are all in the OFF state, and the wireless transmission / reception unit 9 is in a standby state for reception and transmission.

In this state, when the user presses the on-hook button 5, the microcomputer 16 detects this and sends a control signal for instructing the wireless transmission / reception unit 9 to start transmission, and the wireless transmission / reception unit 9 connects the line. At the same time, the switching control signal for instructing the switch to be turned on is sent to the switching control input of the speaker switch 11. Therefore, since the speaker switch 11 is turned on, the wireless transmission / reception unit 9 outputs a dial tone “two” through the speaker switch 11, the speaker amplifier 14, and the speaker 3. Since the speaker 3 has a higher output than the earpiece 2, the dial tone “two” is output at a level that can be sufficiently heard without bringing the ear near the earpiece 2. After that, by dialing the telephone number of the other party using the dial button 7, a call signal is sent from the wireless transmission / reception unit 9 to the telephone line via the antenna 8 and the master unit (not shown). At this time, if the other party is busy, a sound "two, two ...", which indicates that the call is being made, is heard from the speaker 3. Further, when the other party is calling, a sound of "Toruru, Toruru ..." indicating that the other party is calling is heard. When the other party responds to this call, the microcomputer 16 is sent via the wireless transmission / reception unit 9.
Detects this and sends a switching control signal to the switching control input of the microphone switch 12 to instruct the switch to be turned on, thereby turning on the microphone switch 12. As a result, it is possible to automatically enter into a so-called hands-free call in which a call is made with the handset 1 placed on a desk or the like.

If the speakerphone button 6 is pressed when the other party responds to the call, the microcomputer 16 detects this and switches off the speaker switch 11.
And a switching control signal for instructing the earpiece switch 10 to turn on the switch. As a result, the speaker switch 11
Is turned off and the earpiece switch 10 is turned on, so that a normal call can be made between the earpiece 2 and the microphone 4. Also, during normal call, speakerphone button 6
By pressing, the microcomputer 16 which detects this turns the earpiece switch 10 into the OFF state and the speaker switch 11 into the ON state, so that the handsfree call can be switched again. Similarly, when the speakerphone button 6 is pressed during a hands-free call, the microcomputer 16 which detects this pushes the earpiece switch 10 into the ON state and the speaker switch 11 into the OFF state. You can switch to a normal call by.

(Effect of the Invention) As described above, the cordless telephone of the present invention includes the cordless telephone, the earpiece, the speaker with higher output than the earpiece, and the speaker.
Since the control means for turning on the speaker in response to the operation of the off-hook button and the changeover switch for arbitrarily turning on / off the speaker in the off-hook state are provided, it is possible to confirm the dial tone at the time of calling. There is no need for troublesome operations such as putting the earpiece on or off the earpiece. Also, even when both hands are blocked,
Allows hands-free calling. In addition, by operating the selector switch during a hands-free call, the speaker is turned off, and then the normal conversation by the earpiece is switched, and by operating the selector switch during the normal conversation by the earpiece, the speaker is turned on. Since it is possible to switch to the hands-free call using the speaker thereafter, it is possible to arbitrarily use the hands-free call and the normal call using the earpiece depending on the situation during the call.

[Brief description of drawings]

FIG. 1 is a block diagram showing the electrical construction of the cordless telephone of the present invention, and FIG. 2 is an external view of the telephone. 1 ... Slave unit, 2 ... Earpiece 3 ... Speaker, 4 ... Microphone 5 ... Off-hook button 6 ... Speakerphone button (changeover switch) 7 ... Dial button, 8 ... Antenna 9 ... Wireless transmission / reception Unit 10 …… Earpiece switch 11 …… Speaker switch 12 …… Microphone switch 16 …… Microcomputer

Claims (1)

[Scope of utility model registration request] 1. A master unit connected to a telephone line and a slave unit connected to the master unit by a wireless line, wherein the slave unit operates a telephone line via the master unit by operating an off-hook button of the slave unit. In the cordless telephone connected to, in the cordless handset, an earpiece, a speaker having a higher output than that, a control unit that turns on the speaker in response to an operation of the off-hook button, and the speaker in the off-hook state. A cordless telephone comprising a changeover switch that is turned on and off arbitrarily.