JP2007251830A - Mobile terminal, and circuit and program thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce component breakages in hardware and loss of data in a memory due to water wetting. <P>SOLUTION: A mobile phone 1 comprises a battery 101 for supplying electric power to internal circuits of a main body, water wetting detection sections 102, 103, 104, and 105 at a plurality of positions, a speaker 106 for outputting a sound, a display section 107 for displaying information contents, a key operation section 108 for information input, a vibrator 109 for output by vibration, a microphone 110 for audio input, a CPU 111 for controlling information from respective sections, the memory 113 holding data of a user, a receiver 114 for outputting audio, an antenna 115 for radio communication with the outside, and a transmission and reception section 112 for controlling outgoing and incoming call. When detecting water wetting, the water wetting detection sections 102, 103, 104, and 105 cut off power supply from the battery 101 to the internal circuits of the mobile phone. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technique for avoiding troubles when there are a plurality of places where water enters when water enters the mobile terminal due to submergence or wetting of the mobile terminal.

  Conventionally, water wetness detection labels for detecting water immersion such as submersion have been affixed to each location in the terminal so that the user can confirm that the mobile terminal has been wetted by accidental immersion of the mobile terminal. Once the water wetness judgment label gets wet with water due to submergence or the like, it reacts with discoloration or the like so that it can be confirmed at a glance that the terminal has been wet with water in the past.

  Recent mobile terminals store a lot of important data for users such as phone numbers, address books, image data, music data in the phone book, and if water breaks down due to submersion or wetting, the hardware breaks down. There is a possibility that data may be lost, and if the parts of the mobile terminal are damaged, the mobile terminal needs to be repaired.

As a countermeasure to this problem, for example, Patent Document 1 discloses a technique for preventing a hardware failure by power shutoff by an internal circuit operation using a power shutoff circuit and a submergence detection unit.
JP 2005-311637 A

  However, the conventional example described above has the following problems.

  When water enters the mobile terminal due to submersion or wetting, there are multiple places where water can enter, so it is not possible to cope with water intrusion at multiple locations or local water wetting. Although it is possible to cause a hardware failure due to a short circuit due to submersion while the load is large and processing takes time when controlling the power shutdown from the power source, the conventional technology does not cope with the fact that it is indispensable to shut off the power immediately after getting wet. There was a problem of being severe.

  The present invention has been made in view of the circumstances described above, and an object of the present invention is to further reduce the possibility of a hardware failure and the loss of data stored in a memory compared to the conventional method.

  In order to solve the above-described problems, the present invention provides a portable terminal that includes a plurality of water wetting detection units and shuts off the power supply from the battery to the internal circuit of the device when water wetting is detected.

  The present invention also provides a mobile terminal circuit in which power supply from a battery is cut off when water wetness detection units provided at a plurality of locations of the mobile terminal detect water wettability.

  The present invention also provides a mobile terminal circuit that cuts off the power supply from the battery when the water wetness detection unit itself provided in a plurality of locations of the mobile terminal detects a water wet state.

  According to the present invention, it is possible to reduce component damage in hardware and data loss in memory due to water wetting.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a block diagram of a cellular phone 1 as an embodiment.

  Referring to FIG. 1, a mobile phone 1 according to the present embodiment has a battery 101 for supplying power to an internal circuit of a main body, and a wet state caused by submersion or water wetting (including liquids other than water) in the main body. A water wetting detection unit 102 having a function of detecting and shutting off power supply, a water wetting detecting unit 103, a water wetting detecting unit 104, a water wetting detecting unit 105, a speaker 106 for outputting sound, and information A display unit 107 for displaying content, a key operation unit 108 for information input, a vibrator 109 for output by vibration, a microphone 110 for voice input, and a CPU 111 for controlling information from each unit A memory 113 for storing user data, a receiver 114 for outputting sound, an antenna 115 for performing wireless communication with the outside, And a transceiver unit 112 for controlling.

  The speaker 106, the display unit 107, the key operation unit 108, the vibrator 109, the microphone 110, the CPU 111, the transmission / reception unit 112, the memory 113, and the receiver 114, which are components of the mobile phone 1 of FIG. Power is supplied from the battery 101 through the power supply path via the water wetting detector 102, the water wetting detector 103, the water wetting detector 104, and the water wetting detector 105 arranged in series.

  FIG. 2 is a block diagram of the inside of the water wetting detecting unit 102, the water wetting detecting unit 103, the water wetting detecting unit 104, and the water wetting detecting unit 105 of the present invention. The water wetting detection unit 102, the water wetting detection unit 103, the water wetting detection unit 104, and the water wetting detection unit 105 all have a common shape and function. Inside the water wetting detection unit 102, the water wetting detection unit 103, the water wetting detection unit 104, and the water wetting detection unit 105, there are a water wetting sensor 201 for detecting a water wetting state, a power input, a power output, and water wetting. A control unit 202 to which a signal from the sensor 201 is connected is provided.

  Next, the processing operation of the wet protection of the mobile phone 1 in the present embodiment will be described in detail.

  As shown in FIG. 2, at least one of the water wetness detection unit 102, the water wetness detection unit 103, the water wetness detection unit 104, and the water wettability detection unit 105 is wet in the water wetness sensor 201. Detect if it is in a state.

  The control unit 202 receives information on whether or not the water is in a wet state from the water wet sensor 201 and outputs the input power as it is if the water is not wet. Shut off and do not supply power to the output.

  As shown in FIG. 1, in the mobile phone 1, the water wetness detection unit 102, the water wetness detection unit 103, the water wettability detection unit 104, and the water wettability detection unit 105 are soaked when the mobile phone 1 itself is submerged or wet. It is installed near easy-to-use areas, particularly where the outside space is open, such as the speaker 106, microphone 110, and key operation unit 108, and constantly monitors the wet condition when water enters the mobile phone 1. Yes.

  When the water wetness detection unit 102, the water wetness detection unit 103, the water wetness detection unit 104, and the water wettability detection unit 105 detect that water has entered due to submersion or water immersion, the power supply is immediately shut off.

  That is, when the water wetting detection unit 102 detects that water has entered, the power from the battery 101 is cut off, and the power after the water wetting detection unit 102 is not supplied. When the water wetting detection unit 103 detects that water has entered, the power supply from the water wetting detection unit 102 is cut off, and the power after the water wetting detection unit 103 is not supplied. When the water wetting detection unit 104 detects that water has entered, the power supply from the water wetting detection unit 103 is cut off, and the power after the water wetting detection unit 104 is not supplied. When the water wetting detection unit 105 detects that water has entered, the power supply from the water wetting detection unit 104 is cut off, and the power after the water wetting detection unit 105 is not supplied.

  Since the water wetting detection unit 102, the water wetting detection unit 103, the water wetting detection unit 104 and the water wetting detection unit 105 are connected in series, the water wetting detection unit 102, the water wetting detection unit 103, the water wetting detection unit 104 and If at least one of the water wetting detecting units 105 detects water wetting, the power supply after the water wetting detecting unit 4 is cut off, and the speaker 106 which is each component in the mobile phone 1; Power is not supplied to the display unit 107, the key operation unit 108, the vibrator 109, the microphone 110, the CPU 111, the transmission / reception unit 112, the memory 113, and the receiver 114.

  After that, by sufficiently drying the mobile phone 1, the water wetness detection unit 102, the water wetness detection unit 103, the water wettability detection unit 104, and the water wettability detection unit 105 are released from the water wet state and are turned on again. Thus, when the cellular phone 1 is turned on, power can be supplied to each component, each component operates normally, and the data stored in the memory 113 can be read without being lost.

  As described above, according to the present embodiment, the mobile phone 1 is equipped with the water wetness detection units at a plurality of places where water easily enters, and when the water wetness is detected, the power supply from the battery to the internal circuit of the mobile phone is provided. By shutting off the supply, there is an effect of reducing parts damage in the hardware and data loss in the memory due to water wetting.

  The water wetting detection unit itself has a circuit that cuts off the power supply when it detects a water wetting condition, so it is possible to immediately cut off the power supply to the terminal internal circuit when it gets wet, It has the effect of reducing hardware component failures and data loss in memory due to water wetting.

  When the mobile phone 1 is submerged or wetted, water wetness detectors are arranged at a plurality of locations where water is likely to enter, and are arranged in series between the power supply path from the battery to the terminal internal circuit. When there are multiple locations where water enters, or when water enters locally, power supply can be cut off, reducing hardware component failures and data loss in memory due to water wetting. effective.

  Next, a second embodiment of the present invention will be described. In the first embodiment, the mobile phone 1 has been described. However, in addition to the mobile phone 1, the mobile phone 1 also includes a plurality of water terminals in portable terminal devices such as a small digital camera, a walkman, and a PDA (Personal Digital Assistant). By installing the wetness detection unit between the power supply path from the battery to the terminal internal circuit, it is possible to reduce the damage of each part of the terminal internal circuit and the loss of data in the memory.

  In addition, the number of water wetting detection units is not limited to four, and the number of water wetting detectors is increased in series as much as possible so that even when there are multiple places where water enters or when water enters locally, The wet state can be detected in more detail, and it is possible to further reduce the breakdown of hardware parts due to submergence or wetness and the loss of data in the memory.

  Each of the above-described embodiments is a preferred embodiment of the present invention, and various modifications can be made without departing from the scope of the present invention.

It is a block diagram which shows the internal structure of the mobile telephone in the 1st Embodiment of this invention. It is a block diagram which shows the structure inside the water wetness detection part in the 1st Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cellular phone 101 Battery 102, 103, 104, 105 Wetness detection part 106 Speaker 107 Display part 108 Key operation part 109 Vibrator 110 Microphone 111 CPU
112 Transmitter / Receiver 113 Memory 114 Receiver 115 Antenna

Claims (6)

  A portable terminal comprising a plurality of water wetting detection units, wherein when a water wetting is detected, power supply from the battery to the internal circuit of the device is cut off.   The water wetting detection unit itself has a circuit that cuts off the power supply when a water wetting state is detected, so that it immediately shuts off the power supply to the internal circuit when it becomes wet. The mobile terminal according to claim 1.   The portable terminal according to claim 1 or 2, wherein the water wetting detection unit is arranged in series between a power supply path from a battery to an internal circuit of the device.   A circuit of a mobile terminal, wherein power supply from a battery is cut off when water wetness detection units provided at a plurality of locations of the mobile terminal detect water wettability.   A circuit for a mobile terminal, wherein the power supply from the battery is cut off when a water wet state included in water wetness detection units provided in a plurality of locations of the mobile terminal is detected.   6. The portable terminal circuit according to claim 4, wherein the water wetting detection unit is arranged in series between a power supply path from the battery to the circuit.

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