JP2006340298A - Cellular telephone device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make an accessory terminal compact and lightweight by setting an accessory side intermittent receiving cycle sufficiently long and reducing power consumption in accessory side intermittent reception. <P>SOLUTION: In a cellular telephone device including a simplified communication function between a cellular phone and an attached accessory thereof, an accessory terminal comprises a detector for receiving transmitting wave energy communicated with a base station by a cellular phone body, the accessory terminal performs intermittent receiving operation and based on a receiving signal of the detector, a communication function of the accessory terminal is started. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mobile phone device that uses an accessory attached to a mobile phone and has a communication function between the accessory and the mobile phone.

  When using a mobile phone, it is increasingly used in combination with accessories. As the accessory, for example, accessories attached to the body of a mobile phone user, accessories such as a watch, or small items attached to a portable object such as a bag are known. Furthermore, recently, a communication function is provided between these accessories and the mobile phone body. For example, when an incoming call is received or an incoming mail is received, the incoming call or incoming state is notified to the accessory terminal, and this is voiced, flashing, or vibrating. Attention is being drawn by means such as.

  For example, in Patent Document 1, a vibration incoming call notification unit is provided in a single case separately from a mobile phone main body, and is held in a breast pocket or the like so that weak radio waves generated by the main body at the time of incoming call can be received. There has been disclosed a technique for obtaining an incoming call signal and performing an incoming call notification for a vibrator or the like based on the incoming call signal. However, since such a device has to keep the vibration incoming notification unit always working, the battery capacity must be equal, and due to the storage space, it is an obstacle to miniaturization and thinning. It was.

  Further, in Non-Patent Document 1, by providing a wireless handset having a communication function in addition to the mobile phone body, even if the mobile phone body is placed in a bag or the like, if there is an incoming call, communication can be performed using only the wireless handset. It also shows what you can do, and send emails and messages remotely with a wireless handset, and you can check the received emails. However, even if the mobile phone body and the wireless handset are connected wirelessly such as Bluetooth, in order to keep the reception function and other functions of the wireless handset working at all times, an equivalent battery capacity is required. There was a problem that it could not be applied to small ones.

  On the other hand, as a battery saving method for a mobile phone, as shown in Patent Document 2, the main circuit is turned off when the incoming call is waiting, and the receiving circuit is turned on intermittently to check whether there is an incoming call addressed to the terminal itself. What checks is known. In other words, polling reception is performed at regular intervals and the state change of the other party is confirmed, thereby avoiding constant battery consumption. Usually, the operation rate of this intermittent reception depends on the performance design of the system, and if it is received in a short cycle, the time until communication is established is short, but the power consumption becomes large. On the other hand, when the intermittent cycle is long, there is a problem that the time until the communication state is entered becomes long and the response becomes slow. For this reason, the operation rate of the intermittent reception is often performed at intervals of 1 to 2 seconds, but has a short battery life as described above.

Japanese Patent Laid-Open No. 9-224272 JP 2004-134904 A Internet [May 9, 2005 search] <URL: http: //www.sharp.co.jp/products/sh2101v/index.html>

  The present invention has been made to solve the above-described problems, and has a communication function between an accessory terminal and a mobile phone. In the accessory terminal, a transmission wave in which the mobile phone body communicates with a base station. By providing a function to receive energy and starting the function of the accessory terminal based on this signal, the accessory's intermittent reception cycle is set sufficiently long, and the accessory's power consumption during intermittent reception is reduced. The purpose is to reduce the size and weight of the terminal.

  According to the present invention, in a mobile phone device having a simple communication function between a mobile phone and an accessory attached thereto, the accessory terminal is provided with a detector that receives transmission wave energy that the mobile phone body communicates with a base station, and the accessory terminal Are intermittently received, and the communication function of the accessory terminal is started based on the received signal of the detector.

  The cellular phone device according to the present invention can set the intermittent reception cycle on the accessory side to be sufficiently long, reduce the power consumption during intermittent reception on the accessory side, extend the standby time, and reduce the battery capacity. Thus, it is possible to reduce the size and weight.

Embodiment 1 FIG.
Hereinafter, a mobile phone device of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a state of association between a mobile phone and an accessory terminal. In the figure, assuming that the mobile phone 1 and the accessory terminal 2 operate as a premise, the accessory terminal 2 has a battery capacity smaller than that of the mobile phone. Therefore, it is necessary to avoid using the battery as much as possible.

  Until now, when communication is not performed, the mobile phone and the accessory terminal 2 that communicates with the mobile phone perform intermittent reception in order to confirm whether they are transmitted to each other. Usually, the operation rate of this intermittent operation depends on the system, and as described above, when it is received in a short cycle, the time required to establish communication is short, but the power consumption increases. On the other hand, if a long intermittent period is used, it takes time to enter the communication state, and there is a problem that the response becomes slow. Therefore, assuming that the accessory terminal 2 is in the vicinity of the mobile phone, the accessory side senses the transmission wave energy that communicates with the base station of the mobile phone. First, the state of the mobile phone side has changed greatly or has changed to the communication state. Try to detect that there is.

  FIG. 2 is a block diagram showing the configuration of the accessory terminal 2 according to the first embodiment of the present invention. The radio wave received from the antenna unit 3 is detected and demodulated by the detection circuit unit 4. 5 includes a CPU, a memory, etc., receives a signal from the detection circuit unit 4, wakes up using an interrupt, etc., and supplies power to the RF unit 6 and the baseband processing unit 7 necessary for communication means Thus, the simplified wireless system using the accessory terminal is configured. Here, it is sufficient that the detection circuit unit 4 is composed of a minimum unit passive circuit which does not require an external power source including a Schottky barrier diode 40, a resistor 41, and a capacitor 42 as shown in FIG.

FIG. 3 is a flowchart for explaining the operating state of the accessory terminal 2 shown in FIG.
At all times, the main control unit 5 turns off the power (not shown), and the simplified wireless system is set in the SLEEP state (step S103), thereby preventing battery consumption. Next, for the intermittent reception, for example, the simple wireless system is woken up, that is, shifted to the communication state by using an interruption by an intermittent timer. In FIG. 3, when activation by the intermittent timer is performed in step S102, a transition process to a communication state is performed (step S104).

  On the other hand, a mobile phone is a base station at the time of call origination, incoming call, registration when moving and location changes, or when updating information (location update) at time intervals specified by the system. And so on. In the case of an accessory for a mobile phone, the accessory terminal 2 is present within approximately 1 m from the mobile phone main body, so that all the radio waves emitted from the mobile phone are received by the detection circuit unit 4. That is, when activation by the detection output trigger is performed in step S103, the communication state is also entered (step S104).

  At this time, it is determined whether or not there is a communication request from the mobile phone body set in the link relationship, and it is determined whether or not to continue communication (step S105). It is sufficient to detect only those that need to communicate with the accessory terminal, such as when the accessory terminal is notified that it is in an incoming state or has received an e-mail when an incoming call is received. There is no guarantee that the radio wave is said to be, and there is a problem that complicates the circuit.

In order to promote further reduction in power consumption, size reduction, and weight reduction, the present invention includes a target radio wave in the detected radio wave by detecting and detecting all radio waves emitted from the mobile phone body. This is a sufficient condition.
That is, a simple wireless system is woken up in a conventional intermittent cycle to determine whether there is a communication request from a mobile phone terminal set in a link relationship, and the energy transmitted from the mobile phone is detected by a detection circuit of the accessory terminal The simple wireless system is woken up each time, and it is determined whether there is a communication request from the mobile phone terminal set in the link relationship.

  When it is determined that there is a communication request from the mobile phone terminal, the main control unit 5 supplies power to the RF unit 6 and the baseband processing unit 7 necessary for communication to start communication. When the necessary communication with the mobile phone is completed, the accessory terminal is in a state of detecting intermittent reception and a radio wave transmitted at a constant cycle or externally. By using the procedure as described above, it is possible to reduce the power consumption as compared with the prior art.

FIG. 4 shows the communication contents of the cellular phone according to the present invention and the operation timing of the accessory terminal, which will be described below with reference to this figure.
In the figure, (a) shows the timing when the accessory terminal is activated (triangle mark), (b) shows the intermittent activation timing (black arrow), and (c) shows the transmission timing (white arrow) of the mobile phone.
As described above, the mobile terminal 1 communicates with the base station in various contents. The accessory terminal 2 uses radio waves emitted from the mobile phone 1, but not all the radio waves emitted from the mobile phone 1 are necessary for the accessory terminal 2.

  For example, location registration, location update, and the like are exchanges necessary only between the base station and the mobile phone body, and are irrelevant to the accessory communication of the present invention. However, at this time as well, the accessory terminal 2 detects the transmission radio wave of the mobile phone 1 by the detection circuit 4 and activates the simple wireless system of the accessory terminal 2. However, as soon as it is recognized that it is not necessary, the accessory terminal 2 enters the intermittent reception state. On the other hand, since it is related to accessory communication at the time of an incoming call, when this is detected, communication with the mobile phone body is continued. It is seemingly useless to perform a wake-up operation on content that is not necessary for the accessory terminal 2, but it is sufficient considering that the mobile phone 1 actually includes the necessary communication state with the accessory terminal 2. An operation is performed under conditions, and a reliable operation can be performed by always operating when necessary.

  As described above, according to the present invention, in a mobile phone device having a simple communication function between a mobile phone and its accessory, a detector that receives transmission wave energy transmitted from the mobile phone body to the base station at the accessory terminal. The accessory terminal is intermittently operated and the communication function of the accessory terminal is started based on the reception signal of the detector. Therefore, the period of intermittent reception on the accessory side is sufficient, for example, about 1 minute. Therefore, power consumption for intermittent reception can be greatly reduced, and even small batteries can withstand long-term use, and communication using accessories that are required to be small and light. The system can be put into practical use.

Further, according to the present invention, even when the intermittent reception cycle is large, it is possible to immediately transition to the communication state when communication is necessary, and the start-up time of the simple communication circuit can be shortened.
In addition to the accessories attached to the body of the mobile phone user, accessories such as a watch, or small items attached to a portable object such as a bag, the accessory is located at a close distance from the mobile phone body. It includes all variations used for the purpose.

It is a figure which shows the related state of a mobile telephone and an accessory terminal. It is a block diagram which shows the structure of the accessory terminal by Embodiment 1 of this invention. It is a flowchart explaining the operation state of the accessory terminal shown in FIG. It is a figure which shows the communication content of the mobile telephone by this invention, and the operation timing of an accessory terminal. It is a figure which shows an example of the detection circuit part used for the accessory terminal of this invention.

Explanation of symbols

1 mobile phone body, 2 accessory terminal, 3 antenna part,
4 detection circuit section, 5 main control section, 6 RF section, 7 baseband processing section,
40 Schottky barrier diode, 41 resistor, 42 capacitor.

Claims (3)

  In a mobile phone device having a simple communication function between a mobile phone and its accessory, the accessory terminal is provided with a detector that receives transmission wave energy that the mobile phone body communicates with the base station, and the accessory terminal performs intermittent reception operation. And a communication function of the accessory terminal is started based on the received signal of the detector.   In a mobile phone device having a simple communication function between a mobile phone and its accessory accessory, the accessory terminal is provided with a detector that receives transmission wave energy that the mobile phone body communicates with the base station, and the accessory terminal is activated. Performed by the combined use of the activation by the intermittent reception operation and the activation by the detector output, and the simple communication function of the accessory terminal is continued when there is a communication request from the mobile phone terminal in the detector output. A mobile phone device characterized by the above.   3. The mobile phone device according to claim 1, wherein the detector is constituted by a minimum detection circuit formed by a passive element.

Images