JP2008090581A - Portable terminal and hard disk drive protection method for same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To validly protect an HDD from any impact when a portable terminal on which a non-contact type IC card function and an HDD are loaded is brought into contact with a card reader. <P>SOLUTION: A portable telephone terminal 1 is loaded with an HDD and a non-contact IC card function. An operating power is supplied to the non-contact IC card function, and this non-contact type IC card function is configured to detect a feeble signal radio wave from a card reader 10. When the non-contact type IC card function detects the feeble signal radio wave from the card reader 10, the portable telephone terminal 1 saves the magnetic head of an incorporated HDD, and controls it in a non-operation state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a portable terminal such as a portable telephone terminal equipped with a hard disk drive (HDD) and a non-contact type IC card function, and a method for protecting the HDD loaded in the portable terminal.

  In recent years, various data such as music data, video data, and PC (personal computer) data are stored in various portable terminals such as mobile phone terminals, portable music players, and PDAs (PDAs: Personal Digital Assistants). The demand for portable devices is increasing, and the capacity required for the built-in memory of the terminal is steadily increasing. For this reason, an example of adopting an HDD in addition to a semiconductor memory as an information storage medium of a terminal has been frequently seen.

  Here, at present, the HDD has a lower price per capacity than the semiconductor memory, and is suitable for a larger capacity than the semiconductor memory. However, since the HDD includes many mechanical parts, for example, It has a drawback that it is weaker than impact with respect to a semiconductor memory. Although detailed illustration of the structure is omitted, the HDD rotates a magnetic recording rotating medium called a platter at a high speed during operation, and the magnetic head floats at a very small distance from the surface of the platter. Therefore, when the magnetic data is read and written, for example, when an excessive impact is applied, the magnetic head may come into contact with the platter and both may be destroyed. Note that the HDD at the time of non-operation is usually held at a position where the magnetic head does not come into contact with the platter, and therefore has higher impact resistance than that at the time of operation. By the way, in the case of a 1-inch CompactFlash (registered trademark) size small HDD, the impact resistance varies depending on the device and manufacturer, but as an example, it is 2000G (G is gravitational acceleration) / 2ms when not operating and 200G when operating. / 2ms, and for vibration, it is several G during operation. That is, in the case of the small HDD of this example, with respect to a short-time impact, the impact resistance is different by about 10 times between non-operation and operation.

  For these reasons, when an HDD is mounted on a portable terminal, in order to protect it from shock or vibration, it is widely performed to mount the HDD inside the terminal in a state of being wrapped with a shock absorbing material or the like. However, when the HDD mounted inside the terminal is sufficiently protected from impact, the thickness of the shock absorbing material may have to be several mm or more. It is difficult to employ an impact absorbing material having such a thickness. For this reason, a shock absorbing material having a sufficient thickness cannot be used in practice, and a thin protective material having a low impact resistance is almost always used. The protection against impact is inadequate.

  In addition, since the portable terminal is a device that is supposed to be carried, it is often accidentally dropped, for example. In preparation for such a case, when a free fall detection algorithm is adopted for an HDD-equipped mobile terminal and the algorithm detects zero gravitational acceleration (0G: G is gravitational acceleration) due to free fall of the device, the HDD magnetic head It is also considered to take measures to prepare for an impact at the time of dropping by retreating and making it non-operating. In other words, in the case of this countermeasure, the impact resistance at the time of dropping is determined by making use of the fact that the impact resistance of the HDD is greatly different between non-operating and operating, and making the HDD inactive when a free fall of the device is detected. To prepare for.

  In addition, in Japanese Patent Application Laid-Open No. 2006-155770 (Patent Document 1), for example, in a portable electronic device incorporating a non-contact IC module and an HDD, a magnetic detection unit for detecting magnetism, and a magnetic head of the HDD Protects the HDD from impact by controlling the magnetic head of the HDD to be retracted from the magnetic recording medium to the retracted position when the magnetic detection unit detects magnetism while the magnetic recording medium is positioned on the magnetic recording medium. Techniques that enable it are disclosed.

JP 2006-155770 A (FIG. 4)

  By the way, mobile terminals such as mobile phone terminals in recent years are contactless RFID (Radio Frequency-Identification) that can be used for, for example, so-called tickets and commuter passes such as electronic wallets and trains, and personal authentication when entering a room. There are an increasing number of devices equipped with type IC card functions. That is, when the portable terminal equipped with the non-contact type IC card function is brought close to a dedicated reading device (non-contact type IC card reader, hereinafter simply referred to as a card reader), the non-contact type IC card function is used. And the above card reader, for example, various information is communicated for payment of fees by electronic payment, entrance / exit to a station, fare settlement, authentication of the person at the time of entry, and the like.

  As described above, the non-contact IC card function of the portable terminal and the dedicated card reader can perform information communication even when they are not in contact with each other (that is, non-contact). Often, a terminal is brought into contact with a card reader.

  Here, when the HDD is built in the portable terminal equipped with the non-contact type IC card function, for example, when the HDD is operating, the card reader is brought into contact with the card reader as described above. If this happens, the HDD may be damaged by the impact generated at the time of contact.

  Further, with respect to the damage of the HDD due to the impact in the usage scene where the portable terminal is brought into contact with the card reader, for example, the HDD protection which detects the gravitational acceleration zero (0G) due to the above-mentioned free fall and retracts the magnetic head. This method cannot be prevented. That is, the movement of the mobile terminal when it is brought into contact with the dedicated card reader (the movement when the mobile terminal moves in the space) is clearly different from the movement at the time of natural fall. According to the HDD protection method, it is not possible to perform control for retracting the magnetic head of the HDD. Of course, it is conceivable to protect the HDD with a shock absorbing material having a sufficient thickness. However, as described above, it is difficult to use the shock absorbing material having a sufficient thickness for a small portable terminal such as a mobile phone terminal.

  Further, as in the technique described in Patent Document 1, in the case of a technique for detecting the magnetism from the card reader and retracting the magnetic head of the HDD, the magnetism generated from, for example, a magnet or an electronic device is mistaken. There is a risk of detection, and malfunctions may occur frequently. Also, considering the power used by the card reader, the magnitude of the magnetic field from the card reader is considered to be very small. Therefore, immediately after detecting the magnetism from the card reader on the portable electronic device side. Even if an operation that stops the operation of the HDD is started, there is a high possibility that the operation of the HDD cannot be completely stopped within the time until the portable electronic device actually contacts the card reader. There is a possibility that it cannot be protected.

  The present invention has been proposed in view of such circumstances, and a portable terminal equipped with a non-contact IC card function and an HDD contacts a reader (card reader) dedicated to the non-contact IC card. It is another object of the present invention to provide a portable terminal capable of effectively protecting the HDD from impacts and a hard disk drive protection method for the portable terminal.

  The portable terminal of the present invention is a portable terminal equipped with a hard disk drive and a non-contact IC card function, and includes a power management unit that supplies operating power to the non-contact IC card function, and a non-contact IC card When the non-contact type IC card function detects signal radio waves from the dedicated reading device, the above-mentioned problem is solved by having a control unit that retracts the head of the hard disk drive and controls it to a non-operating state.

  The portable terminal of the present invention is a portable terminal equipped with a hard disk drive and a non-contact type IC card function, and an acceleration measuring unit that measures acceleration according to movement in the space of the own terminal, and an acceleration measuring unit When the terminal detects a characteristic acceleration change pattern as it approaches the dedicated reader for a non-contact IC card based on the acceleration measurement data from the hard disk drive, the hard disk drive head is retracted and controlled to a non-operating state By having a control unit that performs the above-described problems, the above-described problems are solved.

  Also, the hard disk drive protection method of the present invention is a hard disk drive protection method for a portable terminal equipped with a hard disk drive and a non-contact type IC card function, and the step of supplying operating power to the non-contact type IC card function The step of detecting the signal radio wave from the non-contact type IC card dedicated reading device by the non-contact type IC card function, and the non-contact type IC card function detecting the signal radio wave from the non-contact type IC card dedicated reading device. The above-described problem is solved by including a step of retracting the head of the hard disk drive and controlling the hard disk drive to a non-operating state.

  The hard disk drive protection method of the present invention is a hard disk drive protection method for a portable terminal equipped with a hard disk drive and a non-contact IC card function, and the step of measuring acceleration according to movement of the terminal in space Based on the acceleration measurement data, when the terminal detects a characteristic acceleration change pattern as it approaches the dedicated reader for a non-contact type IC card, the hard disk drive head is retracted to a non-operating state. The above-described problem is solved by including the step of controlling.

  That is, the signal radio wave from the dedicated reader for the non-contact type IC card reaches far away from magnetism, and according to the present invention, when the signal radio wave is detected by the non-contact type IC card function, the hard disk drive The head is retracted.

  Also, the acceleration change pattern when the terminal approaches the non-contact type IC card dedicated reading device is different from the pattern of acceleration change when free-falling, walking, or riding a car or train. When the characteristic acceleration change pattern is detected, the head of the hard disk drive is retracted.

  In the present invention, since the head of the hard disk drive is retracted when the non-contact type IC card function detects the signal radio wave from the non-contact type IC card dedicated reading device, the portable terminal uses the dedicated reading device. It is possible to effectively protect the hard disk drive from the impact when it touches.

  Further, in the present invention, the head of the hard disk drive is retracted when the terminal detects a characteristic acceleration change pattern when approaching the dedicated reader for the non-contact type IC card. It is possible to effectively protect the hard disk drive from the impact when it comes into contact with a dedicated reader.

  Hereinafter, an embodiment of a portable terminal of the present invention will be described with reference to the drawings.

  In this embodiment, a mobile phone terminal having an HDD and a non-contact type IC card function is given as an application example of the present invention. Of course, the contents described here are merely examples, and the present invention is not limited to this. Needless to say, the examples are not limited.

[First embodiment of HDD protection against impact at the time of contact with a card reader]
First, the first embodiment of the present invention will be described.

  The mobile phone terminal according to the first embodiment of the present invention is a terminal equipped with an HDD and a non-contact type IC card function, and when electronic payment or entrance authentication is performed by the non-contact type IC card function. The HDD magnetic head is retracted when it is detected that the electronic payment or entrance authentication is being performed in advance, that is, the terminal is approaching the card reader for the electronic payment or entrance authentication. Thus, the HDD has a function of protecting the HDD from an impact when the terminal contacts the card reader by making the HDD inactive.

  FIG. 1 shows a mobile phone terminal 1 having an HDD and a non-contact IC card function, and the mobile phone terminal 1 is brought close to a non-contact IC card reader (card reader 10) to perform electronic payment and room authentication. The relationship between the mobile telephone terminal 1 of 1st Embodiment and the card reader 10 at the time of performing etc. is shown. Further, FIG. 2 shows the state of the terminal 1 and the card reader 10 in the middle of the process when the cellular phone terminal 1 having the non-contact type IC card function is gradually approaching the reading surface 11 of the card reader 10. The vicinity of the reading surface 11 is shown enlarged. Further, FIG. 3 shows the vicinity of the reading surface 11 of the terminal 1 and the card reader 10 when information communication is performed between the contactless IC card function of the mobile phone terminal 1 and the card reader 10. It is shown enlarged.

  The cellular phone terminal 1 of the first embodiment includes a loop antenna, a transmission / reception unit for transmitting / receiving signals to / from a card reader, and a higher layer of a wireless communication protocol as a configuration for a non-contact IC card function MPU system for realizing the above, a non-volatile memory for storing data and the like. The transmitter / receiver performs a tuning circuit for obtaining a resonance frequency of 13.56 MHz in combination with the inductance component of the loop antenna, clock extraction of a carrier wave sent from a card reader, demodulation of ASK modulation data, and the like. A demodulating circuit to perform, a modulation circuit to generate ASK modulation data to be transmitted to the card reader, and the like.

  On the other hand, the card reader 10 includes an antenna and a signal transmission / reception unit for performing information communication with the non-contact type IC card function mounted on the cellular phone terminal 1 of the first embodiment or other portable terminals. , And other general configurations. In the card reader 10 shown in FIG. 1, the housing surface on which the antenna is mounted is a surface on which contactless wireless communication is performed with the contactless IC card function of the mobile phone terminal 1 or the like (hereinafter referred to as “the contact surface”). , A reading surface 11). In the present embodiment, the card reader 10 always emits weak signal radio waves so that it can communicate with the non-contact type IC card at any time.

  The cellular phone terminal 1 of the present embodiment supplies power from the built-in battery to the contactless IC card function, and the distance from the card reader 10 is a certain distance. In addition, the weak signal radio wave emitted from the card reader 10 can be detected by the non-contact type IC card function. That is, the cellular phone terminal 1 according to the present embodiment detects a weak signal radio wave emitted from the card reader 10 even from a place at least several tens of centimeters to several meters away from the reading surface 11 of the card reader 10. Made possible.

  In addition, the mobile phone terminal 1 of the present embodiment determines whether the detected signal radio wave is emitted from the card reader 10, whether the carrier frequency of the signal radio wave (13.56 MHz in this example) or the The determination can be made based on the modulation method of the signal radio wave (in this example, ASK modulation). That is, when the cellular phone terminal 1 of the present embodiment detects a weak signal radio wave by the non-contact IC card function, the carrier frequency of the signal radio wave is 13.56 MHz, or the signal radio wave By determining whether the modulation method is ASK modulation, it is determined whether or not the detected signal radio wave is emitted from the card reader 10.

  Then, as shown in FIG. 2, when the cellular phone terminal 1 of this embodiment is close to the card reader 10 and detects weak signal radio waves from the card reader 10, Transition to a standby state for performing communication between the two, and then, when the card reader 10 approaches the card reader 10 as shown in FIG. Is actually started to send and receive signals.

  Here, after the cellular phone terminal 1 detects a weak signal radio wave from the card reader 10, the time until the cellular phone terminal 1 can transmit and receive signals to and from the card reader 10, in other words, For example, the time until the mobile phone terminal 1 comes into contact with the reading surface 11 of the card reader 10 depends on the speed at which the user brings the mobile phone terminal 1 close to the reading surface 11 of the card reader 10. It is considered that it takes at least several hundred msec.

  Therefore, when the cellular phone terminal 1 according to the first embodiment of the present invention detects a weak signal radio wave from the card reader 10, for example, when the HDD is in an operating state, the card reader thereafter The magnetic head of the HDD is retracted within the time of about several hundreds of milliseconds until the signal is transmitted to and received from the terminal 10 (that is, the terminal 1 contacts the reading surface 11 of the card reader 10 for example). Then, the HDD is controlled so as to be in a non-operating state. Further, when the cellular phone terminal 1 of the present embodiment detects a weak signal radio wave from the card reader 10, for example, if the HDD is in an inactive state, the user starts the operation of the HDD, for example. Even if an instruction is issued, the HDD is not immediately put into an operating state.

  That is, when the mobile phone terminal 1 comes into contact with the reading surface 11 of the card reader 10 when the HDD is in an operating state, the HDD may be damaged by an impact at the time of contact. When a weak signal radio wave from the card reader 10 is detected, for example, when the HDD is in an operating state, immediately (before the terminal 1 comes into contact with the reading surface 11), the magnetic head of the HDD The HDD is evacuated to make the HDD inactive. For example, when the HDD is inactive, control is performed so that the HDD is not operated immediately thereafter.

  Thereby, according to the mobile phone terminal 1 of the present embodiment, for example, an impact or the like is generated when the mobile phone terminal 1 comes into contact with the reading surface 11 of the card reader 10 as shown in FIG. However, since the HDD is already in an inactive state at that time, the HDD is hardly damaged by the generated impact. Note that the time required for the HDD to transition from the operating state to the non-operating state is a short time of about 30 ms to 200 ms, although it depends on the type of the HDD. It is considered to be sufficient for protecting the HDD because it is sufficiently shorter than the time (several hundred msec) from the detection of the weak signal radio wave from 10 to the actual contact with the reading surface 11, for example.

  For example, when the mobile phone terminal 1 of the present embodiment puts the HDD into a non-operating state by detecting a weak signal radio wave from the card reader 10 during the HDD operation, for example, the card reader 10 thereafter. After determining whether or not the communication with the card reader 10 has ended, and determining that the communication with the card reader 10 has ended, the operation of the HDD is restored (in other words, the communication with the card reader 10 is It is also possible to not restore the operation of the HDD while it continues. Similarly, when the weak signal radio wave from the card reader 10 is detected while the HDD is not operating, and the HDD is not immediately put into an operating state, the communication with the card reader 10 is terminated thereafter. Later, the HDD can be made operable.

  That is, if the HDD is forcibly inactivated by detecting the weak signal radio wave from the card reader 10 as described above, for example, music playback, recording, video recording before the HDD is inactivated. When playback or recording has been performed, there is a risk that the music playback, recording or video playback, recording, etc. may be interrupted due to the forced switching of the HDD to the non-operating state. If music playback, recording, video playback, recording, etc. were to be started, the playback, recording, video playback, recording, etc. of the music can be started by forcibly switching the HDD to a non-operational state. It will disappear. For this reason, in the mobile phone terminal 1 of the present embodiment, after the HDD is forcibly inactivated, the communication with the card reader 10 is terminated, and the terminal 1 and the reading surface 11 of the card reader 10 are terminated. After making it possible to determine that the operation of bringing the HDD into contact (collision) is completed, the above-described music playback / recording is performed by returning the HDD to the operating state or making it operable. It is possible to smoothly and continuously start and start playback and recording of video.

  Note that data cannot be read from or written to the HDD until it is determined that communication with the card reader 10 has ended after the HDD has been forcibly deactivated. When reading / writing data, an internal memory or the like is used as a buffer. In the mobile phone terminal 1 of this embodiment, the buffer is used until it is determined that the communication with the card reader 10 is finished. The memory data is used by the application for music, video, etc., so that the influence of data interruption is almost eliminated.

  That is, according to the mobile phone terminal 1 of the present embodiment, the own terminal 1 starts to approach the reading surface 11 of the card reader 10 in order to use the non-contact IC card function, and then the own terminal 1 After the impact is generated upon contact with the reading surface 11 and the possibility of a new impact almost disappears thereafter, the HDD is returned to an operable state, and the HDD is damaged by the impact. Thereafter, desired processing by the operation of the HDD can be executed.

[Second Embodiment of HDD Protection against Impact when Contacted with Card Reader]
Next, a second embodiment of the present invention will be described.

  The mobile phone terminal 1 according to the second embodiment of the present invention is a terminal equipped with an HDD and a non-contact type IC card function, as in the first embodiment, and the non-contact type IC card function. When electronic payment, room authentication, etc. are performed by the above, the electronic payment, room authentication, etc. are detected in advance, that is, the terminal is approaching the card reader, and the electronic payment, room authentication, etc. are detected. When the terminal detects that the terminal is approaching the card reader, the magnetic head of the HDD is retracted to bring the HDD into a non-operating state, thereby preventing an impact when the terminal contacts the card reader. It has a function to protect the HDD. Further, the card reader 10 of the second embodiment is connected to the non-contact type IC card function mounted on the cellular phone terminal 1 or other portable terminals as in the first embodiment. An antenna for performing information communication, a signal transmission / reception unit, and other general configurations are provided, and the casing surface on which the antenna is mounted is between the non-contact IC card function of the mobile phone terminal 1 and the like. The surface (reading surface 11) on which non-contact wireless communication is performed.

  Here, FIG. 4 shows the relationship between the center of the terminal 1 and the three-dimensional coordinate axes of the x-axis, y-axis, and z-axis with respect to the center when the mobile phone terminal 1 of the second embodiment is horizontal, for example. Is shown.

  FIG. 5 shows the relationship between acceleration and time in the x-axis, y-axis, and z-axis directions when the cellular phone terminal 1 of the present embodiment is stationary in the horizontal state of FIG. As can be seen from FIG. 5, when the mobile phone terminal 1 is stationary in the horizontal state of FIG. 4, the acceleration applied to the x-axis direction and the y-axis direction is always “0”, and the z-axis direction is The acceleration is always “1G” (G is gravitational acceleration).

  On the other hand, FIG. 6 shows the relationship between acceleration and time in the x-axis, y-axis, and z-axis directions when the cellular phone terminal 1 of the present embodiment is free-falling, for example, in the horizontal state of FIG. As can be seen from FIG. 6, when the mobile phone terminal falls freely in the horizontal state of FIG. 4, the acceleration applied to the x-axis direction and the y-axis direction always remains “0”, whereas the z-axis The acceleration in the direction is “1G” of the gravitational acceleration immediately before the start of falling, but becomes “0” immediately thereafter.

  Next, FIG. 7 shows a case in which the mobile phone terminal 1 of the present embodiment is moved obliquely downward (moved in the space), for example, in a horizontal state, and gradually approaches the reading surface 11 of the card reader 10. The relationship between the center of the terminal 1 and the three-dimensional coordinate axes of the x-axis, y-axis and z-axis with respect to the center and the reading surface 11 of the card reader 10 is as follows. It is shown enlarged.

  Further, FIG. 8 shows acceleration and time in the x-axis, y-axis, and z-axis directions when the mobile phone terminal 1 of the present embodiment is moved obliquely downward in the horizontal state as shown in FIG. Showing the relationship.

  Here, when the user intentionally moves the mobile phone terminal 1 of the present embodiment so as to make contact with the reading surface 11 of the card reader 10 as shown in FIG. 7, the second embodiment of the present invention. The change in acceleration in the x-axis, y-axis, and z-axis directions in the mobile phone terminal 1 of the embodiment is different from the acceleration change pattern during free fall as shown in FIG. The characteristic acceleration change pattern as shown in FIG.

  That is, when the mobile phone terminal 1 is moved as shown in FIG. 7, as shown in FIG. 8, the acceleration change in the z-axis direction is caused by the gravitational acceleration “1G” when the terminal 1 starts moving obliquely downward. The value of the acceleration slightly lower than “1G” of the gravitational acceleration continues for a while as the terminal continues to move diagonally downward, and then the reading surface 11 of the card reader 10 moves to the reading surface 11. When approaching and the moving speed of the terminal 1 is reduced, the gravity acceleration changes to “1G”. Further, in this case, the change in acceleration in the x-axis direction adds horizontal acceleration when the mobile phone terminal 1 starts to move, but the acceleration becomes “0” when the horizontal movement of the terminal reaches a constant speed. Thereafter, when the terminal 1 approaches the reading surface 11 of the card reader 10 and the moving speed of the terminal 1 is reduced, acceleration in the direction opposite to the start of the movement is applied, and the terminal 1 finally becomes the reading surface 11 of the card reader 10. When it touches, it becomes “0”. Note that the acceleration in the y-axis direction remains “0” if the mobile phone terminal 1 remains in the horizontal direction of FIG. 7 and 8 show changes in acceleration when the mobile phone terminal 1 is always moved in the same direction at the same speed. When the mobile phone terminal 1 is actually moved closer to the card reader 10, It will be a slightly more complicated change, but basically it will be a characteristic change as described above.

  Accordingly, the cellular phone terminal 1 according to the second embodiment of the present invention starts moving toward the reading surface 11 of the card reader 10 as shown in FIG. 7 and is characterized by the acceleration change as shown in FIG. When a typical pattern is detected, for example, when the HDD is in an operating state, the HDD is within a time of about several hundreds msec until it comes into contact with the reading surface 11 of the card reader 10 thereafter. Control is performed such that the magnetic head is withdrawn to put the HDD in a non-operating state. In addition, when the mobile phone terminal 1 according to the second embodiment detects a change in acceleration as shown in FIG. 8 above, for example, if the HDD is in a non-operating state, the user starts the operation of the HDD, for example. Even if such an instruction is issued, the HDD is not immediately put into an operating state.

  Thereby, according to the mobile phone terminal 1 of the second embodiment, even if an impact or the like occurs due to the mobile phone terminal 1 coming into contact with the reading surface 11 of the card reader 10, for example, the HDD is already non- Since it is in the operating state, the HDD is hardly damaged by an impact. The time from when the user starts moving the mobile phone terminal 1 toward the reading surface 11 of the card reader 10 until it actually contacts the reading surface 11 is, for example, several hundred msec. Since the time required to make the transition to the non-operating state is approximately 30 ms to 200 ms, it is sufficient for protecting the HDD.

  Also in the second embodiment, similarly to the first embodiment described above, the mobile phone terminal 1 may be configured such that, for example, the HDD is brought into a non-operating state by detecting the acceleration change described above during the HDD operation. In this case, after that, after determining that communication is actually performed with the card reader 10, the operation of the HDD can be restored. Similarly, even when the HDD is not immediately put into an operating state by detecting the above-described acceleration change while the HDD is not operating, it is subsequently determined that communication has actually been performed with the card reader 10. Later, the HDD can be made operable.

  In an actual usage environment, it is expected that various accelerations will be applied to the terminal depending on the usage status of the mobile phone terminal, for example, while walking, but for example, the acceleration during walking constantly changes due to vertical movement of the body etc. Therefore, it can be distinguished from the movement (acceleration change) when the mobile phone terminal is moved at a substantially constant speed and brought close to the reading surface 11 of the card reader 10 as in the present embodiment. Further, as another actual use environment, for example, when the user is on a vehicle such as a car or a train, the mobile phone terminal is moved at a constant speed after acceleration when the mobile phone starts. Even when the cellular phone terminal 1 is brought close to the card reader 10 in order to use the non-contact type IC card function, acceleration is applied at the start of movement as described above with reference to FIG. Will continue to move. However, in many cases, the movement mode when the mobile phone terminal 1 is brought close to the card reader 10 is such that the mobile phone terminal 1 is taken out from the bag and brought close to the card reader 10, and the moving time is within 1 second, for example. It is considered that it will be within 2 to 3 seconds at the longest. Therefore, when the mobile phone terminal 1 of the present embodiment is in a vehicle such as a car or a train, for example, when the constant speed movement continues longer than 1 second (or 2 to 3 seconds), for example. For example, when a control for retracting the HDD is performed, the operation of the HDD is restored to eliminate the influence of the movement of the vehicle or the like.

[Internal configuration of mobile phone terminal]
Next, FIG. 9 shows a schematic internal circuit configuration of a mobile phone terminal capable of realizing the functions of the above-described first and second embodiments of the present invention.

  In FIG. 9, a data line is a transmission line for transmitting various data such as voice data, e-mail data, and video data. The control line is a transmission line for transmitting various control information such as control data from the control unit 40 configured by a CPU (Central Processing Unit).

  The antenna 42 is an antenna for transmitting and receiving signal radio waves to and from a base station of the mobile phone network, and is connected to the communication circuit 41. The communication circuit 41 performs frequency conversion, modulation, demodulation, and the like of transmission / reception signals.

  The call voice data received by the antenna 42 and the communication circuit 41 is subjected to processing such as decoding by the voice processing unit 52 and then sent to the speaker 50, and other received data is received by the control unit 40. After being appropriately processed, it is sent from the control unit 40 to each unit as necessary.

  When the call voice reception data is supplied from the communication circuit 41, the voice processing unit 52 decodes the call voice reception data, and sends the decoded call voice data to the speaker 50 via the data line. .

  The speaker 50 is built in the terminal main body, converts the supplied call voice data, ringtone, playback music data, etc. into an analog signal, amplifies the analog voice signal by an internal amplifier, and converts the voice signal into an audible voice. Convert and output to the outside.

  The microphone 51 is built in the terminal main body, converts input sound into an analog sound signal, amplifies it with an internal amplifier, and sends the analog sound signal to the sound processing unit 52. The voice processing unit 52 to which the call voice signal is supplied from the microphone 51 converts the call voice signal into digital voice data, encodes it, and sends the encoded call voice data to the communication circuit 41. As a result, call voice data is transmitted from the antenna 42.

  The display unit 43 includes a liquid crystal display or the like and a display driving circuit for driving the liquid crystal display. The display driving circuit drives the liquid crystal display based on display data such as various screens, texts, and images supplied from the image processing unit 53. Thereby, various screens, texts, images, and the like are displayed on the display.

  The image processing unit 53 performs processing of images and text displayed on the display unit 43. The image processing unit 53 performs compression encoding of still image and moving image data captured by a camera unit (not shown), and the compressed and encoded image data is necessary under the control of the control unit 40. Depending on the situation, it is sent to the internal memory and stored.

  The operation unit 44 includes a key device (keyboard), a power button, a speech / end button, and other key devices (not shown) provided on the casing of the mobile phone terminal according to the present embodiment, and a user. And an operation signal generator for generating an operation signal corresponding to the operation of the key device.

  The HDD unit 47 is a hard disk drive built in the mobile phone terminal of this embodiment. The HDD control unit 46 controls the rotation of the platter (magnetic recording rotating disk) in the HDD unit 47, the operation control of the magnetic head including the operation state and the non-operation state described above, and the writing and reading of data by the magnetic head and the platter. Control and so on.

  The non-contact card communication unit 54 includes a transmission / reception unit, an MPU system, a nonvolatile memory, and the like as described in the first embodiment, and includes a loop antenna 55 for non-contact card communication. Yes. The contactless card communication unit 54 is supplied with power from the battery 49 of the mobile phone terminal through the power management unit 48, and is weak from the card reader 10 as described in the first embodiment. Signal radio waves can be detected. Further, when the non-contact card communication unit 54 detects a weak signal radio wave from the card reader 10, the non-contact type card communication unit 54 sends information such as detection of the weak signal radio wave, a carrier frequency of the signal radio wave, a modulation method of the signal, and the like. It is made to send to. Thus, the control unit 40 can perform HDD retraction control as described in the first embodiment based on the detection result of the weak signal radio wave from the card reader 10.

  When the mobile phone terminal of the present embodiment is moved, the triaxial acceleration sensor 56 measures the acceleration in the three axis directions of the x axis, the y axis, and the z axis, and sends the acceleration measurement data to the control unit 40. As a result, the control unit 40 can determine how much acceleration the mobile phone terminal moves to any of the x-axis, y-axis, and z-axis, and accordingly, the change in the acceleration causes the second described above. HDD evacuation control as described in the embodiment can be performed.

  The battery 49 is, for example, a detachable secondary battery, and the power management unit 48 supplies power from the battery 49 to each unit. In particular, in the case of the mobile phone terminal according to the embodiment of the present invention, the power management unit 48 also manages the supply and stop of operating power to the contactless card communication unit 54 under the control of the control unit 40. Yes.

  The memory unit 45 includes a ROM (Read Only Memory) and a RAM (Random Access Memory). The ROM of the memory unit 45 includes an OS (Operating System), a control program code for the control unit 40 to control each unit, various initial setting values, font data, dictionary data, various sound data, and an HDD according to the present embodiment. Application program code for executing a control algorithm for protection, various application program codes provided in other general mobile phone terminals, IDs of the terminals, and the like are stored. The ROM of the memory unit 45 includes a rewritable ROM such as a NAND-type flash memory (NAND-type flash memory) or an EEPROM (Electrically Erasable Programmable Read-Only Memory). It is also possible to store various data handled by a general mobile phone terminal such as data). The RAM stores data as needed as a work area when the control unit 40 performs various data processing.

  The control unit 40 includes a CPU, and performs various controls of the terminal based on the OS and various programs stored in the memory unit 45. Particularly, in the case of the embodiment of the present invention, the control unit 40 executes the control application program for protecting the HDD stored in the memory unit 45, so that the contactless card communication unit 54 is connected to the card reader 10. When the terminal 1 starts to approach the reading surface of the card reader 10 based on the acceleration measurement data of the triaxial acceleration sensor 56 when the weak signal radio wave from the HDD is detected. Implement control processing for protection.

  In addition, although not shown in FIG. 9, the mobile phone terminal according to the present embodiment is provided with a general mobile phone terminal such as a camera function, a GPS (Global Positioning System) function, and a short-range wireless communication function. It is also provided for each component. The description of the circuit configuration and other configurations provided in these general mobile phone terminals will be omitted.

[Control algorithm for HDD protection in the first embodiment]
FIG. 10 shows a flowchart of a control algorithm for protecting the HDD in the first embodiment described above.

  In the flowchart of FIG. 10, the control application program for protecting the HDD is executed by the control unit 40 of the mobile phone terminal 1 and the process performed when the non-contact card communication unit 54 detects the weak signal radio wave of the card reader 10. Shows the flow.

  In FIG. 10, the control unit 40 constantly monitors whether or not an application program using the HDD unit 47 is operating as the process of step S1. Then, when it is determined in step S1 that the application program using the HDD unit 47 is operating, the control unit 40 performs the determination process of the next step S2.

  When the process proceeds to step S2, the control unit 40 monitors the signal from the non-contact card communication unit 54 to determine whether or not the weak signal radio wave from the card reader 10 has been detected. Is determined to be approaching the card reader 10. When the control unit 40 determines that the non-contact card communication unit 54 has detected a weak signal radio wave from the card reader 10, the control unit 40 proceeds to step S3, while the non-contact card communication unit 54 determines that the card reader When it is determined that ten weak signal radio waves are not detected, the process returns to step S1.

  When it is determined in step S2 that the non-contact card communication unit 54 has detected a weak signal radio wave from the card reader 10 and the process proceeds to step S3, the control unit 40 passes the HDD control unit 46 through the HDD unit 47. It is determined whether or not is currently operating. When it is determined that the HDD unit 47 is currently operating (in an operating state), the process proceeds to step S4. On the other hand, when it is determined that the HDD unit 47 is not operating (in a non-operating state), step S5 is performed. Proceed to the process.

  When the processing proceeds to step S4, the control unit 40 retracts the magnetic head of the HDD unit 47 through the HDD control unit 46 to change the HDD unit 47 to the non-operating state, and then proceeds to step S5.

  When the processing proceeds to step S5, the control unit 40 determines whether or not the non-contact card communication unit 54 detects a signal radio wave from the card reader 10. Then, the control unit 40 repeats the determination process of step S5 while the non-contact card communication unit 54 detects the signal radio wave from the card reader 10, and the non-contact card communication unit 54 receives the signal from the card reader 10. If the signal radio wave cannot be detected, the process proceeds to step S6.

  When the processing proceeds to step S6, the control unit 40 returns the HDD unit 47 to the operating state as necessary. That is, when the HDD unit 47 is in the operating state in step S3 and the HDD unit 47 is in the non-operating state in step S4, the control unit 40 determines that the non-contact card communication unit 54 is the card reader in step S5. When the signal radio wave from 10 cannot be detected, the operation state of the HDD unit 47 is restored. If the HDD unit 47 is inactive in step S3, but the HDD unit 47 needs to be operated after that, the control unit 40 determines that the non-contact card communication unit 54 is a card reader in step S5. When the signal radio wave from 10 can no longer be detected, the HDD unit 47 is put into an operating state. As a matter of course, if the HDD unit 47 is in a non-operating state in step S3 and it is not necessary to operate the HDD unit 47 after that, the control unit 40 does not operate the HDD unit 47. Maintain state. Then, after the process of step S6, the control unit 40 returns the process to step S1.

[Control Algorithm for HDD Protection in the Second Embodiment]
FIG. 11 shows a flowchart of a control algorithm for protecting the HDD in the second embodiment described above.

  In the flowchart of FIG. 11, the control application program for protecting the HDD is executed by the control unit 40 of the mobile phone terminal 1, and the non-contact type IC card function is based on the acceleration measurement data from the triaxial acceleration sensor 56. The flow of the process performed when the control part 40 detects that the own terminal 1 is approaching the card reader 10 for use is shown.

  In FIG. 11, the control unit 40 constantly monitors whether or not an application program that uses the HDD unit 47 is operating as the process of step S <b> 11. Then, when it is determined in step S11 that the application program that uses the HDD unit 47 is operating, the control unit 40 performs the determination process of the next step S2.

  In step S12, the control unit 40 monitors acceleration measurement data from the triaxial acceleration sensor 56, thereby detecting a change in acceleration when the own terminal 1 is brought close to the card reader 10 and the own terminal 1. Is moving at a constant speed (that is, whether it is the aforementioned characteristic acceleration change pattern). The control unit 40 proceeds to step S13 when a change in acceleration is detected when the terminal 1 is brought close to the card reader 10 and it is detected that the terminal 1 is moving at a constant speed. On the other hand, if either of the acceleration change or the constant speed movement is not detected, the process returns to step S11.

  In step S12, when the acceleration change and the constant speed movement are detected when the terminal 1 is brought close to the card reader 10, the control unit 40 goes through the HDD control unit 46 to the HDD unit. It is determined whether 47 is currently operating. When it is determined that the HDD unit 47 is currently operating (in an operating state), the process proceeds to step S14. On the other hand, when it is determined that the HDD unit 47 is not operating (in a non-operating state), step S15 is performed. Proceed to the process.

  When the processing proceeds to step S14, the control unit 40 retracts the magnetic head of the HDD unit 47 through the HDD control unit 46 and shifts the HDD unit 47 to the non-operating state, and then proceeds to step S15.

  When the process proceeds to step S15, the control unit 40 determines whether or not the non-contact card communication unit 54 detects a signal radio wave from the card reader 10. Then, the control unit 40 repeats the determination process of step S15 while the non-contact card communication unit 54 detects the signal radio wave from the card reader 10, and the non-contact card communication unit 54 receives the signal from the card reader 10. If the signal radio wave cannot be detected, the process proceeds to step S16.

  When the processing proceeds to step S16, the control unit 40 determines whether or not the communication between the non-contact card communication unit 54 and the card reader 10 has ended. If it is determined that the processing has ended, the processing proceeds to step S18. On the other hand, when it is determined that the process has not ended yet, the process proceeds to step S17.

  When the process proceeds to step S17, the control unit 40 determines whether a certain time has elapsed since the start of the movement in which the own terminal 1 is brought closer to the card reader 10 in step S12, and the constant speed state has been reached. Judge whether or not. That is, in this step S17, it is determined whether or not the movement of the terminal 1 is due to the movement by the vehicle such as the car or the train described above. Then, the control unit 40 returns the process to step S15 while determining that the predetermined time has elapsed since the constant speed state has been reached, and returns to step S18 when determining that the predetermined time has elapsed. Proceed with the process.

  When the processing proceeds to step S18, the control unit 40 returns the HDD unit 47 to the operating state as necessary. That is, when the HDD unit 47 is in an operating state in step S13 and the HDD unit 47 is inactivated in step S14, the control unit 40 ends communication with the card reader 10 in step S15. Alternatively, when it is determined in step S17 that the predetermined time has elapsed, the operation state of the HDD unit 47 is restored. If the HDD unit 47 is inactive in step S13, but the HDD unit 47 needs to be operated after that, the control unit 40 ends the communication with the card reader 10 in step S15. Alternatively, when it is determined in step S17 that the predetermined time has elapsed, the HDD unit 47 is set in an operating state. As a matter of course, when the HDD unit 47 is in the non-operating state in step S13 and it is not necessary to operate the HDD unit 47 after that, the control unit 40 does not operate the HDD unit 47. Maintain state. Then, after the process of step S18, the control unit 40 returns the process to step S11.

[Summary]
As described above, according to the mobile phone terminal 1 of the first and second embodiments of the present invention, detection of weak signal radio waves from the card reader 10 or the own terminal 1 to the reading surface of the card reader 10. Since the magnetic head of the built-in HDD is retracted to stop the operation of the HDD based on the acceleration measurement data when approaching, the mobile phone terminal 1 is used as a card reader in order to use the non-contact type IC card function. It is possible to effectively protect the built-in HDD from an impact when it is brought into contact with the 10 reading surfaces. Therefore, according to each embodiment of the present invention, the user can use the contactless IC card function of the mobile phone terminal provided with the built-in HDD with peace of mind. In addition, according to each embodiment of the present invention, since the HDD can be protected from an impact, it is possible to make the shock absorbing material and the like surrounding the HDD thinner, and the terminal itself is downsized accordingly. It becomes possible to do.

  In particular, according to the first embodiment of the present invention, signal radio waves that reach far farther than magnetism are detected, so that the HDD can be detected more quickly than a system that detects magnetism from the card reader 10. In addition, since it is designed to identify the signal radio wave from the card reader 10 by looking at the carrier frequency and the modulation method, an error such as that caused by the magnetic detection method can be detected. Detection is almost eliminated, and the HDD can be protected accurately and reliably.

  Further, according to the second embodiment of the present invention, the HDD is protected based on a specific acceleration change or constant speed movement when the terminal 1 is brought close to the card reader 10, so that, for example, free fall Unlike the method for detecting the HDD, it is possible to reliably protect the HDD from a specific impact caused by contact with the reading surface 11 of the card reader 10.

  In addition, in this embodiment, since the non-contact IC card function is built in the mobile phone terminal 1, the operating power of the non-contact IC card can be obtained from the terminal 1, and therefore the non-contact IC The card can be kept in a state where signals can be received at all times. On the other hand, in this embodiment, the non-contact type IC card is always in a state where signals can be received. For example, when the HDD is not operating (when not operating), the magnetic head of the HDD is set. When there is no need for the HDD protection operation to be evacuated, power may be saved by not supplying power to the contactless IC card.

  The description of each embodiment described above is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made according to the design or the like as long as the technical idea according to the present invention is not deviated.

  For example, the portable terminal of the present invention may include both of the HDD protection functions described in the first or second embodiment.

  Further, the mobile phone terminal according to the embodiment of the present invention is not limited to a terminal having a built-in HDD as described above, but may be a terminal having a slot to which a small external HDD can be attached, for example. When the HDD is loaded, the HDD may be protected from impact in the same manner as described above.

  In addition, the mobile terminal of the present invention is not limited to a mobile phone terminal, and can be applied to, for example, a music player equipped with an HDD, a digital television receiver / recorder, a PDA, or the like.

A mobile phone terminal having an HDD and a non-contact IC card function, and the mobile phone terminal and the card reader in the first embodiment when electronic payment or entrance authentication is performed by bringing the mobile phone terminal close to the card reader. It is a figure used for relationship explanation. It is a figure which expands and shows the reading surface vicinity of a terminal and a card reader in the state of the middle process when the mobile telephone terminal of 1st Embodiment is gradually brought close to the reading surface of a card reader. It is a figure which expands and shows the reading surface vicinity of a terminal and a card reader in the state at the time of information communication being performed between the non-contact-type IC card function of a mobile telephone terminal, and a card reader. FIG. 6 is a diagram illustrating the relationship between the center of a mobile phone terminal according to the second embodiment, for example, and the three-dimensional coordinate axes of the x-axis, y-axis, and z-axis relative to the center of the terminal. It is a figure which shows the relationship between the acceleration concerning time of an x-axis, a y-axis, and az-axis when a mobile telephone terminal of 2nd Embodiment is still in a horizontal state, and time. It is a figure which shows the relationship of the acceleration concerning time of the x-axis, y-axis, and z-axis when the mobile telephone terminal of 2nd Embodiment falls horizontally, for example, when it falls freely, and time. A terminal for explaining the relationship between the center of the terminal, the three-dimensional coordinate axis, and the card reader when the mobile phone terminal of the second embodiment is moved in a diagonally downward direction in the horizontal state and brought close to the card reader; It is an enlarged view of the reading surface vicinity of a card reader. It is a figure which shows the relationship between the acceleration concerning time of an x-axis, a y-axis, and a z-axis at the time of moving the mobile telephone terminal of 2nd Embodiment diagonally downward with a horizontal state. It is a block diagram which shows the schematic internal structure of the principal part of the mobile telephone terminal of the 1st, 2nd embodiment of this invention. It is a flowchart which shows the control algorithm for HDD protection in the 1st Embodiment of this invention. It is a flowchart which shows the control algorithm for HDD protection in the 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Mobile phone terminal, 10 Card reader, 11 Reading surface, 40 Control part, 41 Communication circuit, 42 Communication antenna, 43 Display part, 44 Operation part, 45 Memory part, 46 HDD control part, 47 HDD part, 48 Power management Unit, 49 battery, 50 speaker, 51 microphone, 52 sound processing unit, 53 image processing unit, 54 non-contact card communication unit, 55 non-contact card loop antenna, 56 triaxial acceleration sensor

Claims (9)

In mobile terminals equipped with hard disk drives and contactless IC card functions,
A power management unit that supplies operating power to the contactless IC card function;
A control unit that retracts the head of the hard disk drive and controls it in a non-operating state when the non-contact IC card function detects a signal radio wave from a dedicated reader for the non-contact IC card;
A portable terminal characterized by that.   The control unit determines whether the signal radio wave detected by the non-contact IC card function is a signal radio wave from the dedicated reader based on the carrier frequency of the signal radio wave detected by the non-contact IC card function. The mobile terminal according to claim 1, wherein the determination is performed.   The control unit determines whether the signal radio wave detected by the non-contact IC card function is a signal radio wave from the dedicated reader based on the signal modulation method of the signal radio wave detected by the non-contact IC card function. The mobile terminal according to claim 1, wherein determination is made as to whether or not.   The control unit controls the hard disk drive to be in an inactive state when the non-contact type IC card function cannot detect a signal radio wave from the dedicated reading device after performing control to put the hard disk drive in the inactive state. The mobile terminal according to claim 1, wherein the mobile terminal is controlled as follows.   2. The portable terminal according to claim 1, wherein the power management unit stops power supply to the non-contact type IC card when the hard disk drive is in a non-operating state. It has an acceleration measurement unit that measures acceleration according to movement in the space of its own terminal,
Based on the acceleration measurement data from the acceleration measurement unit, the control unit detects a characteristic acceleration change pattern when the terminal approaches the dedicated reader for a non-contact type IC card. 2. The portable terminal according to claim 1, wherein the head is retracted and controlled to a non-operating state. In mobile terminals equipped with hard disk drives and contactless IC card functions,
An acceleration measuring unit that measures acceleration according to the movement of the terminal in the space;
Based on the acceleration measurement data from the acceleration measurement unit, the head of the hard disk drive is retracted when the terminal detects a characteristic acceleration change pattern as it approaches the dedicated reader for a non-contact IC card. A control unit for controlling to a non-operating state,
A portable terminal characterized by that. In a hard disk drive protection method for a portable terminal equipped with a hard disk drive and a contactless IC card function,
A power management unit supplying operating power to the contactless IC card function;
A step in which the non-contact IC card function detects a signal radio wave from a dedicated reader for the non-contact IC card;
When the non-contact type IC card function detects a signal radio wave from a dedicated reader for the non-contact type IC card, the control unit retracts the head of the hard disk drive and controls the non-operating state.
A method for protecting a hard disk drive of a portable terminal. In a hard disk drive protection method for a portable terminal equipped with a hard disk drive and a contactless IC card function,
An acceleration measuring unit measuring acceleration according to movement of the terminal in the space;
Based on the acceleration measurement data from the acceleration measurement unit, when the control unit detects a characteristic acceleration change pattern when the terminal approaches the dedicated reader for a non-contact IC card, the head of the hard disk drive is Evacuating and controlling to a non-operating state,
A method for protecting a hard disk drive of a portable terminal.

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