JP2005311611A - Cordless telephone set - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cordless telephone set capable of automatically setting the time of a master set and a slave set to the standard time. <P>SOLUTION: The cordless telephone set is provided with a plurality of terminal devices including the master set and one or a plurality of slaves sets. Out of the plurality of terminal devices, one terminal device is provided with a radio clock receiving unit, and receives standard time data regularly transmitted from a domestic predetermined place. The standard time is displayed on a display unit on the basis of the received standard time data. Also, this terminal device transmits the received standard time data to all the other terminal devices. The other terminal devices each receive the standard time data from the one terminal device provided with the radio clock receiving unit, and display the standard time on the display unit on the basis of the data. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cordless telephone including a parent device and a child device.

  A cordless telephone provided with a parent machine and a child machine is known. In general, a cordless telephone is provided with a liquid crystal display unit for both a parent device and a child device to display a clock. However, there is a slight error in the clock function of the telephone when it is continuously used, and there is a difference between the display time and the current time after one year of use. For this reason, the user needs to periodically adjust all the times of the parent device and the child device, which is inconvenient.

  In addition, when a power failure occurs for a long time, the clock processing of the master unit cannot be performed, and the current time is lost. Also in this case, the user needs to adjust the time.

  In order to prevent such a problem, Patent Document 1 discloses a cordless telephone having a function of transmitting the time of the parent device to the child device and matching the time of the child device with the time of the parent device. Further, Patent Document 2 discloses a cordless telephone having a function of transmitting and receiving time data of a parent device and a child device to each other and synchronizing the time of the parent device and the child device.

  However, even in the cordless telephones described in these documents, if the time of the master unit is out of order, the user needs to adjust it. For example, as described above, when a power outage occurs for a long period of time, the time of the master unit and the slave unit are the same, but the time remains off from the actual time, and it is corrected to the correct time. The work to be done must be done by the user.

JP 2001-308981 A JP-A-11-225372

  Examples of the problems to be solved by the present invention include the above. It is an object of the present invention to provide a cordless telephone that can automatically adjust the time of a parent device and a child device to a standard time.

  The invention according to claim 1 is a cordless telephone including a plurality of terminal devices including a parent device and a child device, and one terminal device of the plurality of terminal devices transmits a standard radio wave including standard time data. A radio clock receiver for receiving, a display for displaying the standard time based on the standard time data, and a transmitter for transmitting the standard time to all other terminal devices. Each includes a receiving unit that receives the standard time from the one terminal device, and a display unit that displays the standard time.

  In one preferred embodiment of the present invention, in a cordless telephone including a plurality of terminal devices including a parent device and a child device, one terminal device of the plurality of terminal devices transmits a standard radio wave including standard time data. A radio clock receiver for receiving, a display for displaying the standard time based on the standard time data, and a transmitter for transmitting the standard time to all other terminal devices. Each includes a receiving unit that receives the standard time from the one terminal device, and a display unit that displays the standard time.

  The cordless telephone includes a plurality of terminal devices including a parent device and one or more child devices. Among the plurality of terminal devices, one terminal device includes a radio clock receiver, and receives a standard radio wave that is periodically transmitted from a predetermined place in Japan and includes standard time data. The standard time is displayed on the display unit based on the received standard time data. This display unit can be a clock display unit that always displays the time. This terminal device transmits the received standard time to all other terminal devices. Other terminal devices receive the standard time from one terminal device provided with the radio clock receiver, and display the standard time. This display unit can also be a clock display unit that always displays the time. Thus, the plurality of terminal devices are automatically set or corrected to the standard time by the radio clock. This eliminates the need for the user to adjust the time of a plurality of terminal devices.

  In a preferred embodiment, the one terminal device including the radio clock receiver may be a parent device. Generally, the master unit is configured to be equipped with various functions compared to the slave unit. Therefore, the design can be simplified and the cost can be reduced by providing a radio clock receiver in the master unit. Become.

  In this case, the radio clock receiver may be configured to be removable from the master unit. Since the location of the base unit is limited due to the relationship with the external telephone line, etc., the reception status of the standard radio wave by the radio clock may not be very good at the location of the base unit. In that case, it is possible to remove the radio clock receiver from the master unit and place it in a place with good reception conditions. In that case, transmission of the standard time data from the radio clock receiver to the master unit can be performed using a cable. In addition, if a transmission unit is mounted on the radio clock receiver and configured as a small unit, it is possible to wirelessly transmit standard time data to the master unit.

  In another preferred embodiment, the one terminal device including the radio clock receiver may be a slave. Since the location of the base unit is limited due to the relationship with the external telephone line, etc., the reception status of the standard radio wave by the radio clock may not be very good at the location of the base unit. On the other hand, the location of the slave unit is higher than that of the master unit. Therefore, if the radio clock receiver is mounted on the slave unit, the standard radio wave can be reliably received by the radio clock receiver.

  In one aspect of the cordless telephone set described above, the radio clock receiver receives the standard time data at predetermined time intervals, and the transmitter receives the standard time data each time the radio clock receiver receives the standard time data. Time data is transmitted to another terminal device. As a result, every time one terminal device receives the standard time data by the radio clock receiver, the clock units of all the terminal devices can be corrected periodically and automatically.

  Preferred embodiments of the present invention will be described below with reference to the drawings.

[Basic configuration]
FIG. 1 shows the overall configuration of a cordless telephone according to an embodiment of the present invention. As illustrated, the cordless telephone 100 includes one parent device 110a and one or more child devices 110b. Base unit 110 a is connected to external telephone network 103. The base unit 110a exchanges necessary phone book data and various setting data by performing wireless communication with the slave unit 110b. Further, the communication between the parent device 110a and the child device 110b allows the user to talk to the outside using the child device 110b. In the following description, when there is no need to distinguish between the parent device and the child device, each is also referred to as a “terminal device”.

  First, the configuration of base unit 110a will be described. FIG. 2 is a block diagram showing a schematic configuration of base unit 110a of cordless telephone 100.

  In FIG. 2, a base unit 110a includes a detection circuit 1, a line control circuit 2, a call circuit 3, a DSP (Digital Signal Processor) 4, a radio transmission / reception circuit 5, an antenna 6, a CPU 7, and a key switch 8. And a driver 9 connected to the CPU 7 and a display 10 such as a liquid crystal panel or an organic EL driven by the driver 9.

  The detection circuit 1 detects an incoming line incoming signal and a received signal input to the external line connection terminals L1 and L2. The line control circuit 2 controls the line connection between the telephone and the outside line, and the call circuit 3 sends the received signal input via the line control circuit 2 to other circuits to be described later and the transmission signal to the outside line. Send it out. The DSP 4 functions as a modem for the CPU 7 while performing voice processing of reception signals input via the call circuit 3 and transmission signals sent to the outside line. The wireless transmission / reception circuit 5 forms a wireless communication circuit using the MCA (multi-channel access) method with the handset. The antenna 6 is used for wireless transmission and reception with the slave unit.

  The CPU 7 is connected to the line control circuit 2, the call circuit 3, the DSP 4, and the wireless transmission / reception circuit 5, and controls the operation of each circuit. The CPU 7 is connected to a storage unit 115a constituted by a memory or the like, and the memory 115a stores telephone book data and the like as will be described later.

  Further, the base unit 110a includes a ring circuit 11 that detects an incoming line incoming signal input from the external line connection terminals L1 and L2, a monitor speaker 12 that rings a ringing tone by detecting the incoming line incoming signal by the ring circuit 11, and a hands in the on-hook mode. It further includes a microphone 13 for making a free call, and an on-hook switch 14 for switching to an on-hook mode for making a call with the slave set.

  Next, the structure of the subunit | mobile_unit 110b is demonstrated. FIG. 3 is a block diagram showing a schematic configuration of the slave unit 110b of the cordless telephone 100. As shown in FIG.

  In FIG. 3, the slave unit 110 b is connected to the antenna 21, the wireless transmission / reception circuit 22, the DSP 23, the CPU 24, the key switch 25 that is connected to the CPU 24 and performs data input such as a telephone number and telephone operation, and the CPU 24. And a display panel 27 such as a liquid crystal panel or an organic EL driven by the driver 26. The slave unit 110b further includes a microphone 28 and a receiver 29.

  The antenna 21 is used for wireless transmission and reception with the parent device 110a. The wireless transmission / reception circuit 22 forms an MCA wireless communication circuit with the parent device 110 a via the antenna 21. The DSP 23 performs voice processing of a reception signal input via the wireless transmission / reception circuit 22 and a transmission signal transmitted to an external line, and functions as a modem for the CPU 24. The CPU 24 is connected to the DSP 23 and the wireless transmission / reception circuit 22 and controls the operation of each circuit. A memory 115b as a storage unit is connected to the CPU 24, and the memory 115b stores telephone book data and the like.

[First embodiment]
Next, the first embodiment will be described. FIG. 4 is a functional block diagram showing a schematic configuration of the cordless telephone according to the first embodiment. As shown in the figure, the cordless telephone is configured such that the parent device 110a and the child device 110b can communicate with each other via the antenna units 6 and 21, respectively.

  Base unit 110a includes a main control unit 111a, a display unit 112a, an operation unit 113a, a clock unit 118a, and a radio clock receiver 119a. The main control unit 111a performs necessary control over the entire data transmission / reception process from the parent device 110a to the child device 110b, or vice versa, in addition to the call processing using the parent device 110a. .

  The display unit 112a is configured by a liquid crystal panel, for example, and is used to display necessary information related to the telephone such as a telephone number. The current time is always displayed on the display unit 112a.

  The operation unit 113a includes operation buttons operated by the user. The wireless unit 114a wirelessly communicates necessary data with the slave unit.

  The clock unit 118a includes a crystal oscillator, for example, and calculates the current time by counting the pulses. The time calculated by the clock unit 118a is displayed on the display unit 112a.

  The radio clock receiver 119a obtains Japan Standard Time using a radio clock. A radio timepiece is a timepiece having a function of acquiring Japan Standard Time based on a standard radio wave transmitted from a predetermined transmitting station. Japan Standard Time is determined by an atomic clock managed by the Communications Research Laboratory. Standard radio waves including data indicating Japan standard time (hereinafter referred to as “standard time data”) are transmitted from several transmitting stations in Japan.

  The radio clock receiver 119a includes a small antenna, a receiver, a microprocessor, and the like. The antenna receives standard radio waves, the receiver extracts standard time data in the form of received pulses from the standard radio waves, and the microprocessor acquires the standard time based on the standard time data. The main control unit 111a adjusts the time of the clock unit 118a based on the standard time thus acquired. The radio clock receiver 119a calculates a standard time by periodically receiving a standard radio wave at predetermined time intervals under the control of the main controller 111a.

  On the other hand, the slave unit 110b includes a main control unit 111b, a display unit 112b, an operation unit 113b, and a wireless unit 114b, and the functions of each unit are the same as those of the master unit 110a.

  In the following description, if it is not necessary to distinguish between the constituent elements of the master unit or the slave unit, the suffix is omitted. For example, “main control unit 111a” refers to the main control unit of the parent device, and “main control unit 111” refers to either the main control unit of the parent device or the child device. To do.

  Next, time setting processing using a radio timepiece will be described. In the present embodiment, the radio clock receiver 119a mounted on the parent device 110a periodically acquires the standard time and sets it in the clock portion 118a of the parent device 110a itself. Master unit 110a transmits the standard time to each slave unit 110b using radio unit 114 and antennas 6 and 21, and corrects the time of clock unit 118 of the slave unit to the standard time. As a result, the clocks of all the terminal devices constituting the cordless telephone 100, that is, the parent device and the child device are periodically corrected to the standard time. Therefore, all the terminal devices are maintained at the standard time without requiring any work by the user. Of course, the time difference between the parent device and the child device is also prevented.

  FIG. 5 shows a flowchart of time setting processing according to this embodiment. FIG. 5A is a flowchart of processing on the parent device side, and FIG. 5B is a flowchart of processing on the child device side. Note that these processes can be realized by the main controllers 111a and 111b of the parent device 110a and the child device 110b executing programs prepared in advance.

  First, the process on the base unit side will be described. The process shown in FIG. 5A is periodically executed at predetermined time intervals. First, when it is time to perform the time setting process, the main controller 111a controls the radio clock receiver 119a to receive a standard radio wave. When the acquisition of the standard time is completed (step S1), the standard time is set in the clock unit 118a in the parent device 110a (step S2).

  Next, the main control unit 111a determines one slave unit 110b as a transmission destination terminal device (step S3), and transmits the standard time to the transmission destination terminal device (step S4). Then, it is determined whether or not the standard time has been transmitted to all transmission destination terminal devices, that is, all the slave units 110b (step S5). In this way, when the standard time is transmitted to all the transmission destination terminal devices (step S5; Yes), the processing on the parent device side ends.

  Next, with reference to FIG. 5B, processing on the slave unit side will be described. The processing on the slave side is executed when the main control unit 111b receives the standard time transmitted from the master unit in step S4 described above. Specifically, when the main control unit 111b receives the standard time from the parent device 110a (step S11), the main control unit 111b sets the standard time in the clock unit 118b (step S12). In this way, the time of each slave unit 110b is also adjusted to the standard time.

  As described above, according to the present embodiment, it is possible to have a plurality of terminal devices in the home that display accurate Japanese standard time by using the radio timepiece. In addition, even when the telephone becomes inoperable due to a power failure or the like, an accurate time display can be automatically performed by a radio clock after the restoration.

  In the above embodiment, the radio clock receiver 119a is basically attached to a part of the main body of the main unit 110a. However, the radio clock receiver 119a can be configured as a small unit that can be detached from the parent device, and can be arranged at a location away from the main body of the parent device 110a. In general, the base unit has some restrictions on the place where it can be installed in the home due to the necessity of connection to an external telephone line, etc., and the standard radio wave reception state is not good at the place where the base unit is placed. Cases are also conceivable. In such a case, the radio clock receiver 119a may be configured as a small unit and installed in a place where the reception state of the standard radio wave is good. In that case, the standard time data may be supplied from the radio clock receiver 119a to the parent device 110a using a cable or wireless communication.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the first embodiment, the radio clock receiver is provided on the parent device side, but in the second embodiment, the radio clock receiver is provided on the slave device side.

  FIG. 6 shows the configuration of the cordless telephone according to the second embodiment. As can be seen from a comparison with the cordless telephone of the first embodiment shown in FIG. 4, the radio clock receiver 119b is different from the main unit 110a but is provided in the sub unit 110b. The same as in the first embodiment. Even when there are a plurality of slave units, only one of the radio clock receivers is provided. That is, the configuration of the slave unit that does not have the radio clock receiver is the same as that shown in FIG.

  FIG. 7 shows a flowchart of time setting processing according to this embodiment. FIG. 7A is a flowchart of processing of the slave unit having the radio clock receiver 119b, and FIG. 7B is a flowchart of processing of the slave unit not having the master unit and the radio clock receiver. Note that these processes can be realized by the main controllers 111a and 111b of the parent device 110a and the child device 110b executing programs prepared in advance.

  First, the processing of the slave unit having the radio clock receiver will be described. The process shown in FIG. 7A is periodically executed at predetermined time intervals. First, when it is time to perform the time setting process, the main control unit 111b controls the radio clock receiver 119b to receive the standard radio wave. When the acquisition of the standard time is completed (step S21), the standard time is set in the clock unit 118b in the slave unit 110b (step S22).

  Next, main controller 111b determines base unit 110a as the transmission destination terminal device (step S23), and transmits the standard time to the transmission destination terminal device (step S24). Then, it is determined whether or not the standard time has been transmitted to all the transmission destination terminal devices, that is, the parent device 110a and all the other child devices 110b (that does not have the radio clock receiver) (step S25). Thus, when the standard time is transmitted to all the transmission destination terminal devices (step S25; Yes), the processing of the slave unit including the radio clock receiving unit ends.

  Next, with reference to FIG. 7B, processing of the parent device 110a and the child device 110b that does not have the radio clock receiver will be described. This process is executed by the main control unit 111 of the master unit or the slave unit when the standard time transmitted from the slave unit 110b having the radio clock receiver is received in step S24 described above. Specifically, when the main control unit 111 of the parent device 110a or the child device 110b without the radio clock receiver receives the standard time from the child device 110b having the radio clock receiver (step S31), the standard time Is set in the clock unit 118 (step S32). In this way, the time of each parent device 110b that does not have the parent device 110a and the radio clock receiver is also adjusted to the standard time.

  As described above, there are some restrictions on the locations where the master unit can be installed in the home due to reasons such as the need for connection to an external telephone line. There may be a case where the reception state is not good. In this regard, there are fewer restrictions on the location of the slave unit than the master unit. Therefore, if the radio clock receiver is provided in the slave unit, it is easy to place the slave unit in a place where standard radio waves are received well.

1 schematically shows the overall configuration of a cordless telephone according to an embodiment of the present invention. It is a block diagram which shows schematic structure of a main | base station. It is a block diagram which shows schematic structure of a subunit | mobile_unit. It is a block diagram which shows the component of the cordless telephone by 1st Example. It is a flowchart of the time setting process by 1st Example. It is a block diagram which shows the component of the cordless telephone by 2nd Example. It is a flowchart of the time setting process by 2nd Example.

Explanation of symbols

6, 21 Antenna 100 Cordless telephone 110a Master unit 110b Slave unit 111a, 111b Main control unit 112a, 112b Display unit 113a, 113b Operation unit 114a, 114b Radio unit 118a, 118b Clock unit 119a, 119b Radio clock receiver

Claims (5)

A cordless telephone including a plurality of terminal devices including a parent device and a child device, wherein one terminal device of the plurality of terminal devices is:
A radio clock receiver for receiving standard radio waves including standard time data;
A display unit for displaying a standard time based on the standard time data;
A transmission unit for transmitting the standard time to all other terminal devices,
Each of the other terminal devices is
A receiving unit that receives the standard time from the one terminal device;
A cordless telephone comprising: a display unit that displays the standard time.   The cordless telephone according to claim 1, wherein the one terminal device is the base unit.   The cordless telephone according to claim 2, wherein the radio clock receiver is configured to be detachable from the base unit.   The cordless telephone according to claim 1, wherein the one terminal device is the handset. The radio clock receiver receives the standard radio wave at predetermined time intervals,
The cordless according to any one of claims 1 to 4, wherein the transmission unit transmits the standard time to another terminal device each time the radio wave clock reception unit receives the standard radio wave. Phone.

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