JP2501930Y2 - Cordless communication device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless communication device including a mobile device using a battery and a fixed device for transmitting and receiving information to and from the mobile device by wireless communication.
More specifically, it relates to the control of the charging time of the mobile device by the charger of the stationary device of the cordless communication device.

[0002]

2. Description of the Related Art The current when a mobile unit of a cordless communication device is used is a typical example, and is about 130 mA in a call state and about 50 to 70 mA in a standby state. The power consumption is calculated by summing the products of the respective currents and the respective times. From the above, the power consumption of the battery of the mobile device is calculated from the time when the mobile device of the cordless communication device was in the standby state and the time when it was in the call state, and the rapid charging time was calculated by dividing the power consumption by the charging current. Was calculated and controlled.

[0003]

In the above conventional device, when the battery of the mobile device of the cordless communication device is charged by using a charger other than the charger of the stationary device of the cordless communication device, The stationary device cannot detect that the battery is in the charging state and cannot recognize that the battery charging state has changed. Therefore, when the battery of the mobile device is charged from the charger of the stationary device next, there is a problem that the amount of charge by another charger is ignored and rapid charging is performed, resulting in overcharging.

[0004]

According to the present invention, there is provided a mobile device which uses a battery as a power source, and a fixed device which transmits and receives information to and from the mobile device by wireless communication and is connected to a communication line. In the cordless communication device, the mobile device includes means for detecting the start and end of charging of the battery, and means for sending a modulation signal to the wireless circuit section of the mobile device based on information from the detection means. , A means for demodulating the information of the detection means from the wireless circuit of the fixed equipment, a means for detecting whether or not the charger of the fixed equipment is in operation, and a battery for the mobile equipment by the detection means. The cordless communication device is provided with means for calculating the amount of power consumption of the battery of the mobile device based on the information on the start and end of charging and the information on whether the charger of the fixed device is in the operating state.

[0005]

FIG. 1 shows a functional block configuration of a cordless telephone which is one of the embodiments using the present invention. The mobile device (1) includes a wireless circuit section (2) and a modulation / demodulation circuit section (3).
And a communication circuit unit (4) having a handset and a battery (5)
And a control unit (6) including a CPU that controls and controls each of the above units. Stationary equipment (7), communication line section (8)
A wireless circuit section (9), a modulation / demodulation circuit section (10), and a charger (11) for charging the battery (5) of the mobile device (1).
And a charging control unit (12) for controlling the charger (11)
And a control unit (13) including a CPU that controls and controls the above units. (14) and (15) show respective antennas.

Next, assuming that charging of a charger other than the charger of the stationary machine is trickle charging, the function of the means will be described with reference to the flowchart of FIG. That is, when the user connects or disconnects the mobile device (1) to or from the charger, the control unit (6) of the mobile device (1) detects charging start or charging end from the energized or de-energized state of the battery (5). (Step S-
1). The modulation / demodulation circuit unit (3) modulates the detection information, and the wireless circuit unit (2) transmits the modulation information to the fixed device (7) (step S-2).

When the radio circuit section (9) of the stationary machine (7) receives the modulation information (step S-3), the modulation / demodulation circuit section (10) performs demodulation (step S-4). The charging control unit (12) detects whether the charger (11) is energized or de-energized and transmits the information to the control unit (13) (step S-5). When the control unit (13) receives the information that the charger (11) is in the energized state, the control unit (13) determines the quick charge time from the discharge time of the battery (5) calculated up to that time until the battery (5) is fully charged. The information is obtained and sent to the charging control unit (12), and the charging control unit (12) performs quick charging according to the information from the control unit (13), and when the rapid charging is completed, switches to trickle charging (step S-6).

When the control unit (13) receives information from the charging control unit (12) that the charger (11) is in the non-energized state, it determines whether charging is started or ended based on the information received from the mobile unit (1). A judgment is made (step S-7). Control unit (1
3) determines that the battery (5) has been charged, the battery (5)
The discharge time of is added (step S-8). When the control unit (13) determines to start charging the battery (5), the addition of the discharging time being added is stopped and the discharging time until then is maintained (step S-9).

The discharge state of the mobile device (1) of the cordless telephone includes a call state and a standby state, and the current used differs. In order to match the discharge time with the discharge amount, the discharge time is corrected by multiplying the call time by the current consumption ratio.

FIG. 3 shows a comparison of the remaining capacities of the batteries of the cordless telephone using the present invention and the conventional cordless telephone. Line L1-L2-L3-L5-L6-L8
Shows the remaining capacity of the battery of the mobile device using the present invention and the remaining capacity of the battery recognized by the stationary device. Line L1
-L2-L3-L5-L9 indicates the remaining capacity of the battery of the conventional mobile device, and lines L1-L4-L7-L8 indicate the remaining capacity of the battery recognized by the conventional stationary device.

At time M1, the remaining capacities of the battery of the present invention and the conventional battery are the same as shown by the line L1-L2. At time M2 and time M3, it is not possible for the controller of the conventional stationary machine to recognize that the battery is being charged, and the remaining capacity of the battery indicated by lines L2-L4 is indicated. At this time, the actual remaining capacity of the battery and the remaining capacity of the battery recognized by the control unit of the present invention are shown by lines L2-L3-L5.

At time M4, in the conventional cordless telephone, the remaining capacity of the battery and the remaining capacity of the battery recognized by the control unit of the stationary machine do not match each other. I will end up. In the embodiment using the present invention,
Since the remaining capacity of the battery and the remaining capacity of the battery recognized by the controller of the stationary device match, when the battery is fully charged, trickle charging is performed. Lines L5-L8 indicate the remaining capacity of the conventional battery, and lines L4-L7 indicate the remaining capacity of the battery recognized by the control unit of the conventional stationary machine. Lines L5-L6-L8 represent the remaining capacity of the battery of the embodiment using the present invention and the remaining capacity of the battery recognized by the controller of the stationary machine.

In the present embodiment, the chargers other than the stationary device of the cordless telephone are treated as performing trickle charging. However, if the charging current is not trickle charging, addition or subtraction is performed with a certain value with respect to the discharge time. It is also possible to correct the discharge time by performing. Although a cordless telephone is described in the above embodiment, it can be used for a facsimile or a modem which is cordless and uses a communication line.

[0014]

Since the present invention is constructed as described above, it has the following effects.

After detecting the start or end of charging of the battery of the mobile unit, the control unit of the fixed unit controls the fixed unit by transmitting it to the fixed unit and detecting the power consumption of the battery according to the received information. The unit will not erroneously recognize the remaining capacity of the battery and the battery will not be overcharged.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment according to the present invention.

FIG. 2 is a flowchart showing a flow of functions of an embodiment according to the present invention.

FIG. 3 is a comparison diagram of a battery remaining capacity of a mobile device between an embodiment according to the present invention and a conventional cordless telephone.

[Explanation of symbols]

 (1) Mobile device (2) Mobile device wireless circuit unit (3) Mobile device modulation / demodulation circuit unit (5) Battery (6) Mobile device control unit (7) Stationary device (8) Communication line (9) Stationary device (10) Stationary modem circuit (11) Stationary charger (12) Charge controller (13) Stationary controller

Claims (1)

(57) [Scope of utility model registration request] 1. A cordless communication device comprising: a mobile device using a battery as a power source; and a fixed device, which transmits and receives information to and from the mobile device by wireless communication, and is connected to a communication line. The mobile unit includes means for detecting the start and end of charging of the battery , and means for sending a modulation signal to the wireless circuit section of the mobile unit based on the information of the detection unit, while the fixed unit includes a fixed unit means for demodulating the information of the detection means from the radio circuit unit, charger station set is means for detecting whether the operating state, and the mobile station by said detecting means
Information on the start and end of charging the battery and the charger of the fixed machine is operating
A cordless communication device comprising means for calculating a power consumption amount of a battery of a mobile device based on information on whether or not the mobile device is in a state .