JPH05153034A - Cordless telephone set - Google Patents

Abstract

PURPOSE:To set a better communication state corresponding to an environment where a slave equipment is used by selecting a used channel based on noise information registered in relation with the used channel. CONSTITUTION:A slave equipment 2 is provided with switches 6 to 8 inputting the size of noise level used as the noise information during the communication in addition to ordinary numeric key switches. When a user judges that the noise level during communication is too large during the communication or after the completion of the communication, he can input a 'large' switch 6, by which the slave equipment 2 notifies a master equipment 1 of the noise information. The user can depress a 'small' switch 8 when he judges that the communication state is good, or he can depress a 'medium' switch 7 when he judges that the communication state is ordinary. In any case, the slave equipment 2 notifies the master equipment 1 of each state information. The master equipment 1 stores the noise level information of the used channel which was transmitted by the slave equipment 2 as priority and selects the channel in accordance with the priority, immediately when the noise information is transmitted during communication or from next time when the information is transmitted after the completion of communication.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone comprising a master unit and a slave unit connected to the master unit by a wireless line.

[0002]

2. Description of the Related Art A conventional general cordless telephone system will be described with reference to FIG. In FIG. 7, reference numeral 1 is a cordless master unit, 2 is a cordless slave unit, and the cordless master unit 1 is connected to a telephone line 3. When making a call from the cordless cordless handset 2, the cordless cordless handset 1 is connected via the radio wave 4 for communication. 5A, 5B, and 5C are wireless noises (hereinafter referred to as noises) from the outside, which are emitted from other nearby cordless phones, OA devices, TVs, and the like. The sources of these noises have the property of inevitably increasing with the increasing number of houses and the spread of devices using radio waves.

As a measure against the above noise, a conventional cordless telephone (mainly a low power system) adopts a multi-channel access system. In a state of no call, the base unit detects an empty channel among several tens of channels and internally operates. In the case of holding the information as the information and using the child device, after connecting with the control channel, the call randomly shifts to the held empty channel to make a call.

The operation of the multi-channel access system will be described with reference to FIG. FIG. 8 is an example showing the levels of two noise sources (noise 1 and noise 2) in the frequency band of the radio wave used in the cordless telephone. While searching the above frequency band in the cordless base unit as needed, if the levels of noise 1 and noise 2 in the frequency of a certain channel are less than the callable level, the cordless telephone determines that the call is possible and the available channel Is stored as On the other hand, 9, 1 in the figure
A channel corresponding to a frequency at which the level of noise 1 or noise 2 exceeds the call enable level, such as 0, is avoided as an unusable channel. In this way, it is general that a plurality of empty channels are detected and stored in the storage device of the master unit, and when the slave unit is used, the stored empty channels are randomly selected to make a call.

[0005]

As described above, in the conventional cordless telephone, if the reception level of the search channel is less than a certain value, it is uniformly determined and stored as an empty channel. Free channels of noise below the certain level are randomly designated. However, there is a problem that even if the reception level is below a certain level, there is noise that is unpleasant to the ear for the caller, and sometimes the call becomes difficult due to the noise or the like.

Further, in the above case, since the base unit automatically selects the channel, the caller cannot change the channel at his own discretion.

The present invention has been made to solve the above-mentioned conventional technical problems, and an object of the present invention is to provide a cordless telephone capable of setting a better call state in accordance with the environment in which the child device is used. And

[0008]

A cordless telephone set according to the present invention comprises a base unit 1 connected to a telephone line 3 and a handset 2 connected to the base unit 1 by a wireless line.
It is provided with means for inputting noise information during a call, means for registering the input noise information in association with a used channel, and means for selecting a used channel based on the registered noise information. is there.

A cordless telephone set according to a second aspect of the present invention is composed of a master unit 1 connected to a telephone line 3 and a slave unit 2 connected to the master unit 1 by a wireless line. A means for inputting, a means for associating the input noise information with a used channel, and a means for registering in correspondence with a classification such as a time zone during a call, a day of the week, etc., and selecting a used channel based on the registered noise information. And means.

[0010]

According to the first aspect of the present invention, when the caller using the slave unit 2 determines that the communication state of the used channel is bad due to noise from the OA device, TV, etc., the noise information is input. The input noise information is registered in association with the used channel. In the next call, when selecting a channel to be used, it is possible to preferentially select a channel having a good call state based on the noise information.

According to the second aspect of the present invention, the inputted noise information is registered in correspondence with the time zone, the day of the week, and the like during the call. In the next call, when selecting a channel to be used, it becomes possible to more finely select from those having a good call state based on the noise information registered by the time at that time and the day of the week of the day.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a flow chart showing an operation of selecting a communication channel to be used by a cordless cordless handset according to the present invention, FIG. 2 is a diagram showing an embodiment of a cordless handset 2 according to the present invention, and FIG. 3 is a channel used by a caller's judgment. It is a figure which shows another noise information. The system as a cordless telephone is the same as that shown in FIG.

In FIG. 2, the handset 2 is provided with switches 6, 7, and 8 for inputting a noise level magnitude as noise information during a call in addition to a normal ten-key switch. When the caller determines that the noise level during the call is high during or after the call, the handset 2 transmits the noise information to the base unit 1 by inputting the "large" switch 6. If the call status is judged to be good, "small"
If the switch 8 is pressed, and if it is judged to be normal, the slave 2 transmits the information to the master 1 by pressing the "middle" switch 7.

The base unit 1 stores the noise level information of the above-mentioned used channel transmitted from the handset unit 2 as a priority,
During the call, immediately after the call ends, the call channel is selected from the next time according to the priority. These processes are easily realized by the microcomputer M inside the parent device 1.

FIG. 3 shows an example of the noise level information input by the above method for all 89 communication channels. Here, when the noise level is low, "○",
When it is large, it is indicated by "x", and in the middle is indicated by "△". Also,
Channels that are not used are indicated by "-". These pieces of information are stored in a memory or a memory chip such as an SRAM (static random access memory) built in the microcomputer. In addition to the above-mentioned information processing function, the function of storing a channel having a noise level higher than a certain value as a non-usable channel and avoiding the use, which the conventional multi-access channel type cordless telephone has, is also premised on the present invention. It is used together.

Next, the operation of the cordless telephone of the present invention will be described with reference to FIG. The caller starts a call with the handset unit 2, and the base unit 1 connects the handset unit 2 to a line through a certain channel. When the caller judges that the noise of the channel is large and the call state is not good during the call (S1), the "large" switch 6 is input (S4). The master unit 1 stores and registers the noise "large" information of the above-mentioned channel from the slave unit 2 in the memory (S5). Next, the main | base station 1 searches for the presence or absence of the channel which was memorized and registered as noise small in the past (S6), and if there is, switches to the noise "small" registered channel with the highest priority (S7). If there is not, it switches to another free channel (S8).

When the caller judges that the call channel noise is small and the call is good (S2), the "small" switch 8 is input (S9). The master device 1 stores and registers the used channel in the memory as noise "small" (S10).

If the caller determines that the call state of the call channel is normal (S3), the "middle" switch 7
Is input (S11). The master device 1 stores and registers the used channel in the memory as "medium" noise (S12).

Furthermore, the handset 2 does not need to input the noise level input switches 6, 7 and 8 during or after the call is made by the caller.
When the power of the device is turned off (S13), if the used channel is not registered (S14), the main unit 1 stores and registers in the memory as noise "medium" (S15), and the already registered channel is not registered. For example, it ends as it is.

Next, a call channel at the start of a call is selected according to the priority order of each channel registered in the memory. The method of setting this priority order is as follows. First, when there are a plurality of noise "small" channels, the noise "small" channel registered most recently is prioritized. If the noise “small” channel is not registered, the latest channel is preferentially selected from the noise “medium” registered channels. Furthermore, if the noise “medium” channel is also unregistered, it is randomly selected from unregistered channels other than the noise “large” registered channel. Multiple noise "large"
Of the registered channels, the channel registered most recently is set to have the lowest priority.

Needless to say, the memory registration in the memory can be performed by rewriting new information even for the channels already stored and registered.

As described above, when the caller inputs the magnitude of the wireless noise during the call by the slave unit, it becomes possible to use the phone in the best state of use.

FIG. 4 shows another embodiment. In this embodiment, the state of each channel at the time of a call is, for example, time zone (day and night, etc.)
The best state can always be selected in detail by memorizing and registering according to holidays and weekdays. The above various states (time, day of the week) can be easily realized by having a timekeeping function built into the cordless telephone.

In order to simplify the input means, FIG. 5 shows an embodiment in which the noise level is set to "high", and when not input, the noise is automatically regarded as "small" and registered. is there. The handset 2 in this figure is noisy.
Only the input button 6 is added. FIG. 6 is a flowchart showing the operation when the embodiment of FIG. 4 and the embodiment of FIG. 5 are used together. The operation of the cordless telephone of the above embodiment will be described below with reference to FIG. First, if the caller starts a call on the child device and determines that the noise is large (S20), he inputs the noise "large" switch 6 (S21). The base unit registers the above information from the handset unit in association with the time zone, day of the week, etc. at the time of the call (S22). Next, the presence or absence of a channel already registered as noise "small" in the same category is searched, and if there is a noise "small" channel (S23), it is switched to the noise "small" channel (S24). Switch to another channel other than "Large" registration (S
25). If the caller does not enter the noise "Large" (S
26), the used channel is registered as a noise “small” channel in association with the time zone of the call time, the day of the week, and the like (S27).

By performing the above-mentioned operations, the call state under various conditions provided inside the cordless telephone can be input, whereby a more detailed and optimal call by the handset 2 becomes possible.

The registration of noise information and the control of selection of the used channel in the above embodiment are executed by the microcomputer M of the base unit 1, but the present invention is not limited to this. May be provided, or
A special device may be added as an external device.

[0027]

According to the first aspect of the present invention, the caller can input the noise information regarding the noise level during the call in the handset to set the call state suitable for the usage environment.

According to the second aspect of the present invention, since the noise information is further classified and registered according to the time zone and the day of the week and the channel can be selected, the call state can be more finely adapted to the usage environment.

[Brief description of drawings]

FIG. 1 is a flowchart showing an operation in an embodiment of a cordless telephone of the present invention.

FIG. 2 is a schematic diagram showing a configuration of a slave unit of the same embodiment.

FIG. 3 is a diagram showing an example of noise information for each used channel, which is input according to a caller's judgment.

FIG. 4 is a diagram showing an example of noise level data of each channel in call time zone classification.

FIG. 5 is a schematic diagram showing the configuration of a slave unit according to another embodiment of the present invention.

FIG. 6 is a flowchart showing the operation of another embodiment of the present invention.

FIG. 7 is a system diagram of a cordless telephone.

FIG. 8 is a diagram showing an example of noise levels in a frequency band used by a cordless telephone.

[Explanation of symbols]

 1 base unit 2 slave unit 3 telephone line 4 radio wave for communication 6 noise level “large” switch 7 noise level “medium” switch 8 noise level “small” switch

Claims (2)

[Claims] 1. A cordless telephone comprising a master unit connected to a telephone line and a slave unit connected to the master unit by a wireless line, and means for inputting noise information during a call. A cordless telephone comprising: a unit for registering the noise information in association with a used channel; and a unit for selecting a used channel based on the registered noise information. 2. A cordless telephone comprising a master unit connected to a telephone line and a slave unit connected to the master unit by a wireless line, and means for inputting noise information during a call, It is provided with a unit for registering the noise information in association with a channel in use and corresponding to a classification such as a time zone during a call, a day of the week, etc., and a unit for selecting a channel for use based on the registered noise information. Cordless phone characterized by.