JP5106226B2 - Mobile terminal device - Google Patents

Description

  The present invention relates to a portable terminal device, and more particularly to an improvement of a portable terminal device that generates a predetermined operation signal by detecting the amount of movement of a moving body using light.

  In recent years, a mobile phone including an optical pointing device that can move a mouse pointer or a cursor on a screen by sliding a finger in a detection area has been proposed (for example, Patent Document 1). In the mobile phone described in Patent Document 1, an optical pointing device is arranged in the determination key, and the movement of the finger is detected using the surface of the determination key as a detection area. An optical pointing device consists of a light projecting unit that emits detection light toward the finger and a light receiving unit that receives the detection light reflected by the finger, for example, comparing finger images generated at regular intervals By doing so, the amount of movement of the finger is detected. Such an optical pointing device has a high detection accuracy and can detect even a slight movement of a finger, so that it can be placed even in a narrow space.

  In general, a mobile terminal device such as a mobile phone has a limited area where operation keys and pointing devices can be arranged, compared to a terminal device such as a stationary desktop personal computer. For this reason, the portable terminal device as described above has a problem that the optical pointing device is erroneously operated when the operation key is operated. In particular, when the operation key is arranged adjacent to the optical pointing device, there is a problem that a finger moved when the operation key is operated is erroneously detected and an input unintended by the user is performed.

As a technique for preventing an erroneous operation of the pointing device, a method of invalidating the input by the pointing device for a certain period after the key operation has been proposed (for example, Patent Document 2). The method described in Patent Document 2 can prevent an erroneous operation of the pointing device immediately after a key operation, but cannot prevent an erroneous operation of the pointing device in an attempt to operate an operation key. That is, since the method of Patent Document 2 invalidates the input by the pointing device based on the operation of the operation key, it cannot prevent the erroneous operation of the pointing device immediately before the key operation. In addition, the method of Patent Document 2 has a problem in that input cannot be performed with a pointing device after a key operation until a certain period of time elapses.
JP 2002-62984 A JP 2002-182824 A

  The present invention has been made in view of the above circumstances, and is an operation of a mobile terminal device that detects the amount of movement of a moving body using light and generates a slide operation signal that can be used for moving a mouse pointer, a cursor, and the like. The purpose is to improve performance. In particular, it is an object of the present invention to provide a mobile terminal device that can prevent a slide operation signal from being erroneously generated when an operation key is operated. It is another object of the present invention to provide a portable terminal device that can perform input by operating an optical pointing device following a key operation even immediately after an operation key is operated.

According to a first aspect of the present invention, there is provided a portable terminal device comprising: a key operation detecting unit that generates a key operation signal based on an operation of an operation key; a light projecting unit that emits detection light; and the detection light reflected by a moving body. A moving amount detecting means having a light receiving portion for receiving light, and repeatedly detecting the moving amount of the moving body; and calculating a cumulative moving amount by integrating two or more moving amounts; When a key operation signal is input, the cumulative movement amount calculating means for resetting the cumulative movement amount, the cumulative movement amount is compared with a threshold value, and the mode is switched to the slide operation input mode based on the comparison result. And a slide operation signal generating means for generating the slide operation signal shown .

According to such a configuration, the accumulated movement amount obtained by integrating two or more movement amounts and reset by a key operation is compared with a threshold value, and the slide operation input mode is switched based on the comparison result. It is possible to suppress a movement of a moving body such as a finger from being erroneously detected during a key operation and erroneously generating a slide operation signal. Particularly, since the slide operation signal is generated based on the accumulated movement amount obtained by integrating a plurality of movement amounts, it is possible to prevent the slide operation signal from being erroneously generated due to erroneous detection of the movement of the moving body immediately before the operation of the operation key. be able to. Further, since the accumulated movement amount is reset by the key operation, it is possible to prevent the slide operation signal from being erroneously generated due to an erroneous detection of the movement of the moving body immediately after the operation key is operated. Therefore, it is possible to suppress an input unintended by the user by moving the moving body. Therefore, the amount of movement of the moving body is detected using light, and a slide operation signal that can be used for moving the mouse pointer or the cursor is generated. The operability of the portable terminal device can be improved. In addition, since the cumulative movement amount is compared with the threshold value and switched to the input mode of the slide operation, even after the operation of the operation key, the optical pointing device can be operated to perform a desired input following the key operation. it can.

In addition to the above configuration, the portable terminal device according to the second aspect of the present invention further includes a light projection control unit that turns on the light projecting unit when an incoming call is received, and the slide operation signal generating unit turns on the light projecting unit upon receiving an incoming call. Then, the slide operation signal is generated based on the cumulative movement amount calculated from two or more movement amounts detected later after a predetermined time has elapsed. According to such a configuration, the slide operation signal is generated based on the accumulated movement amount calculated from a plurality of movement amounts detected after a certain time has elapsed after the incoming call. When is automatically turned on, it is possible to prevent erroneous input due to erroneous detection of movement of the moving object.

In addition to the above configuration, a mobile terminal device according to a third aspect of the present invention includes an operation housing having the operation keys, a display housing having a display for displaying information, the operation housing, and the display housing. Folding connection means for connecting, a connection state detection means for detecting a connection state by the connection means, and a light projection control means for turning on the light projection unit based on a detection result by the connection state detection means. From the two or more movement amounts detected after a lapse of a certain time after the slide operation signal generating means has transitioned from the housed state in which both housings are folded to the deployed state in which both housings are deployed. The slide operation signal is generated based on the accumulated cumulative movement amount. According to such a configuration, the slide operation signal is generated based on the accumulated movement amount calculated from a plurality of movement amounts detected after a certain time has elapsed after the transition to the unfolded state. When the light projecting unit is automatically turned on by deploying the housing, it is possible to prevent erroneous input due to erroneous detection of movement of the moving body.

A mobile terminal device according to a fourth aspect of the present invention is configured such that, in addition to the above configuration, the operation key is disposed adjacent to the light receiving unit.

A mobile terminal device according to a fifth aspect of the present invention is configured such that, in addition to the above-described configuration, the operation key includes a plurality of direction keys for instructing up, down, left, and right, and is disposed with the light receiving unit interposed therebetween. Is done.

According to a sixth aspect of the present invention, in addition to the above-described configuration, the operation key is a key sandwiched between a plurality of direction keys for instructing up / down or left / right, and the light receiving unit includes the operation key. Configured to be located within.

  According to the mobile terminal device of the present invention, since a slide operation signal is generated from a plurality of movement amounts detected after the last key operation signal, movement of a moving body such as a finger is erroneously detected during key operation, It can suppress that a slide operation signal is generated accidentally. Therefore, it is possible to suppress an input unintended by the user by moving the moving body. Therefore, the amount of movement of the moving body is detected using light, and a slide operation signal that can be used for moving the mouse pointer or the cursor is generated. The operability of the portable terminal device can be improved. In addition, since a slide operation signal is generated from a plurality of movement amounts detected after the last key operation signal, even after the operation of the operation key, the optical pointing device is operated following the key operation. A desired input can be performed.

  FIG. 1 is an external view showing an example of a schematic configuration of a mobile terminal device according to an embodiment of the present invention. A foldable mobile phone 1 is shown as an example of the mobile terminal device. The mobile phone 1 is a mobile information terminal in which a display housing 100 and an operation housing 200 are connected via a hinge unit 300 and can be folded with one surface of each housing facing each other.

  The display housing 100 is provided with a display 101 for displaying information and a receiver 102 for receiving a call. A display surface of a liquid crystal display panel is disposed on the display 101. The operation housing 200 is provided with a large number of operation keys 201 and a transmission microphone 202.

  The hinge unit 300 is a connecting unit that connects the display housing 100 and the operation housing 200 in a foldable manner. In the cellular phone 1, a storage state in which both housings are folded and a deployed state in which both housings are deployed can be changed.

  The operation key 201 includes a direction key 203 and an enter key 204. The direction key 203 is an operation key for instructing one of up, down, left, and right, and has a rectangular opening at the center. The direction key 203 is a composite key composed of four contact type switches arranged on the top, bottom, left, and right with the determination key 204 interposed therebetween, and four types of inputs that are different depending on the pressed part are possible. By operating the direction key 203, four directions of up, down, left and right are input, and the cursor can be moved and the screen can be scrolled.

  The decision key 204 is an operation key for instructing a decision operation, and is arranged in an opening provided in the direction key 203. In the determination key 204, an optical pointing device that detects the movement of a moving body such as a finger using light is disposed.

  FIG. 2 is a cross-sectional view illustrating a configuration example of a main part of the mobile phone 1 in FIG. 1, and illustrates a cross-sectional state of the operation housing 200 taken along line AA. The decision key 204 is arranged between the left key 203a and the right key 203b arranged adjacent to each other.

  Each of the left key 203a and the right key 203b is a directional key composed of a contact switch, and includes a key top 10a, a pusher 11, a dome-shaped electrode plate 14, and a substrate 12, respectively.

  The key top 10a is a surface cover that covers the contact portion, and a pusher 11 is disposed on the back surface. In the left key 203a and the right key 203b, when the pusher 11 is pressed through the key top 10a, the electrode plate 14 is elastically deformed by the pusher 11, and the deformation of the electrode plate 14 causes the contact point on the substrate 12 to move. Turns on when conducting.

  The decision key 204 is an operation key composed of a contact point switch similar to the left key 203a and the right key 203b. The key top 10b, a housing portion 10c for housing an optical pointing device, a pusher 11, and a dome-shaped electrode. It is constituted by a plate 14 and a substrate 13.

  The key top 10b is a surface cover having translucency for closing the opening of the accommodating portion 10c. Here, the pusher 11 is arrange | positioned at the bottom face of the accommodating part 10c. In addition, a spacer 15 is disposed between the direction key 203 and the determination key 204 configured by the left key 203a and the right key 203b. It is assumed that the up key and the down key constituting the direction key 203 are configured in the same manner as the left key 203a and the right key 203b.

  When the pusher 11 is pressed through the key top 10b and the accommodating portion 10c, the determination plate 204 is elastically deformed by the pusher 11, and the deformation of the electrode plate 14 causes the contact point on the substrate 13 to move. Turns on when conducting.

  In the accommodating part 10c, the light projection part 21, the condensing lens 22, and the image sensor 23 which comprise an optical pointing device are arrange | positioned. The light projecting unit 21 is an illumination device that uses a moving body such as a finger as a detection target and emits detection light toward such a moving body to illuminate the moving body. For example, an LED that generates infrared light (Light Emitting Diode) is used.

  The condensing lens 22 is an optical lens for condensing the detection light reflected by the moving body and forming an image on the image sensor 23.

  The image sensor 23 is an imaging device that includes a plurality of light receiving elements that receive detection light reflected by the moving body, and outputs light reception amount information for each light receiving element. The condensing lens 22 and the image sensor 23 constitute a light receiving unit of an optical pointing device.

  In this optical pointing device, the key top 10b serves as a detection window for detecting the movement of the finger when operating the optical pointing device, and the movement of the moving body in front of the detection window is based on the received light amount information. Detected. That is, the detection light emitted outside through the detection window is reflected by a moving body such as a finger, and the reflected light is received by the image sensor 23 through the detection window, thereby detecting the movement of the moving body. The Therefore, the input by the finger slide operation is possible even when the finger is in contact with the key top 10b or when the finger is away from the key top 10b. By sliding the finger in front of the key top 10b in this manner, the movement of the finger is detected, and the cursor or the like can be moved.

  Further, since the optical pointing device is arranged in the operation key, it can be arranged even in a narrower space as compared with the case where it is arranged separately from the operation key, so that the apparatus can be miniaturized. .

  In general, since the optical pointing device detects the movement of a moving body in front of the detection window, movement in an area wider than the detection window is detected. For this reason, when the direction key 203 disposed adjacent to the light receiving unit (decision key 204) of the optical pointing device is pressed, erroneous detection of finger movement by the optical pointing device is likely to occur. That is, the finger placed on the key top 10a to operate the adjacent direction key 203 reflects the detection light emitted from the detection window, so that the movement of the finger is erroneously detected and an input unintended by the user is performed. It can be thought that.

  Furthermore, the left key 203a and the right key 203b, and the up key and the down key are all arranged with the decision key 204, that is, the light receiving unit interposed therebetween. These direction keys can be operated continuously. For example, a case where the right key 203b is operated after the left key 203a is operated can be considered. In such a case, it is necessary to move a finger across the enter key 204 when operating the other direction key after operating one direction key. There is a high possibility that the movement of the finger is erroneously detected.

  In this embodiment, the key operation is monitored, and the detection result of the movement of the moving body is reset based on the operation of the direction key 203 or the determination key 204, thereby preventing erroneous input due to such erroneous detection. .

  FIG. 3 is a block diagram illustrating a configuration example of the mobile phone 1 in FIG. 1, and illustrates an example of a functional configuration in the mobile phone 1. In the cellular phone 1, the movement amount of the finger when the finger is slid on the key top 10b is detected by image processing based on the received light amount information, and a slide operation signal is generated based on the movement amount information. This slide operation signal is an input signal used for moving a mouse pointer or cursor on the display 101 or scrolling the screen, for example.

  The mobile phone 1 includes a movement amount detection unit 31, a cumulative movement amount calculation unit 32, a cumulative movement amount storage unit 33, a slide operation signal generation unit 34, a display control unit 35, a key operation detection unit 36, a mode switching unit 37, and a backlight. The drive unit 38 and the connection state detection unit 39 are included.

  The movement amount detection unit 31 includes a light projecting unit 21, an LED driving unit 41, a light receiving unit 42 including a condenser lens 22 and an image sensor 23, and an image processing unit 43. An operation of repeatedly detecting at a period is performed.

  The LED driving unit 41 is a light projecting control unit including a driver circuit that controls the light projecting unit 21. For example, if necessary, an operation of shutting off the power supply to the light projecting unit 21 and turning it off is performed.

  The image processing unit 43 performs an operation of repeatedly detecting the movement amount of the finger at a predetermined cycle based on the received light amount information from the image sensor 23 and outputting the detection result to the cumulative movement amount calculation unit 32.

  For example, the image processing unit 43 generates a finger image having a two-dimensional distribution of the received light amount based on the received light amount information at a constant time interval, and compares the finger image between successive frames, thereby generating a finger image. The amount of movement is detected. That is, the finger movement amount is generated as difference information of finger images sampled continuously.

  The LED drive unit 41, the image sensor 23, and the image processing unit 43 are configured by, for example, one DSP (Digital Signal Processor).

  The cumulative movement amount calculation unit 32 is an integration processing unit that calculates a cumulative movement amount by integrating a plurality of movement amounts detected at regular intervals by the image processing unit 43. Specifically, each time a new movement amount is detected, the current value of the accumulated movement amount is read from the accumulated movement amount storage unit 33, and the read current value of the accumulated movement amount and the newly detected movement amount are obtained. By adding, a new cumulative movement amount is calculated and written in the cumulative movement amount storage unit 33.

  Here, it is assumed that the cumulative movement amount is calculated by adding the absolute value of the movement amount for each component in the x-axis direction and the y-axis direction.

  The key operation detection unit 36 is a key operation signal generation unit that generates a predetermined key operation signal based on a pressing operation of the operation key 201 and outputs the predetermined key operation signal to the display control unit 35 and the mode switching unit 37. This key operation signal is an input signal generated according to the operation key 201 operated by the user.

  The slide operation signal generation unit 34 generates a predetermined slide operation signal based on the key operation signal from the key operation detection unit 36 and the plurality of movement amounts detected by the movement amount detection unit 31, and the display control unit The operation to output to 35 is performed.

  Specifically, the cumulative movement amount held in the cumulative movement amount storage unit 33 is compared with a predetermined threshold value, and a slide operation signal is generated based on the comparison result. That is, a slide operation input determination unit that determines whether or not to generate a slide operation signal by comparing the accumulated movement amount and a threshold value, and performs an operation that does not generate a slide operation signal if the accumulated movement amount is smaller than the threshold value. Is called. On the other hand, when the cumulative movement amount is equal to or larger than the threshold value, a slide operation signal is generated based on the movement amount last detected by the image processing unit 43. For example, a control signal indicating the detected amount of movement is generated as a slide operation signal.

  When the accumulated movement amount is equal to or greater than the threshold value, the input mode is set by the finger slide operation, and a slide operation signal is generated every time the movement amount is detected by the image processing unit 43 until the end of the slide operation is detected. Is done. The end of the slide operation is detected based on, for example, that a certain time has elapsed since the detected value of the movement amount has fallen below a predetermined threshold, or that the operation of the operation key 201 has been detected.

  The slide operation signal generation unit 34 clears the accumulated movement amount storage unit 33 based on a key operation signal generated by operating the operation key 201 and resets the accumulated movement amount held in the accumulation movement amount storage unit 33. Operation is performed. This reset process is performed by converting the accumulated movement amount to an initial value (a constant value), for example, zero. That is, the slide operation signal generation unit 34 generates a slide operation signal based on the cumulative movement amount calculated from a plurality of movement amounts detected after the key operation signal generated last by the key operation detection unit 36. Will be generated.

  Here, a determination key 204 in which the light projecting unit 21 and the light receiving unit 42 are disposed, and a direction key 203 disposed adjacent to the determination key 204 are operation keys that reset the accumulated movement amount ( It shall be called an invalidation key). That is, only when these invalidation keys are operated, the cumulative movement amount reset process is performed, and when the other operation keys 201 are operated, the cumulative movement amount reset process is not performed.

  The display control unit 35 includes an LCD controller that controls a liquid crystal display panel that constitutes the display 101, and based on a key operation signal from the key operation detection unit 36 and a slide operation signal from the slide operation signal generation unit 34. An operation to display information on the display surface is performed.

  For example, when the direction key 203 is operated by the user, an operation of moving the cursor on the display surface by a predetermined amount in a predetermined direction is performed. Further, when an operation of sliding a finger on the key top 10b is performed, the mouse pointer or cursor on the display surface is moved by a predetermined amount in a predetermined direction according to the movement amount of the finger, or the screen is A scrolling operation is performed. In the case of input by a finger slide operation on the key top 10b, control may be performed to vary the moving speed and moving amount of the mouse pointer or cursor according to the moving speed of the finger.

  The backlight drive unit 38 includes a driver circuit that controls the backlight constituting the display 101. For example, if necessary, an operation of shutting off the power supply to the backlight and turning it off is performed.

  The mode switching unit 37 controls the LED driving unit 41 and the backlight driving unit 38 based on the key operation signal from the key operation detecting unit 36, and reduces the power consumption compared to the normal mode and the normal mode. The operation of selectively switching between the power saving modes is performed. For example, in the normal mode, the backlight and the light projecting unit 21 of the display 101 are turned on and turned on, whereas in the power saving mode, both the backlight and the light projecting unit 21 of the display 101 are turned off and turned off. The operation is performed.

  In the mode switching unit 37, for example, the operation mode is changed to the power saving mode by operating a specific operation key 201 in the normal mode, or when a certain time has passed since the operation key 201 was last operated. Can be switched. Further, the mode can be switched from the power saving mode to the normal mode by operating an arbitrary operation key 201 or by detecting an incoming call.

  Alternatively, the operation mode may be switched from the normal mode to the power saving mode by sliding a finger on the key top 10b. In this case, immediately after switching the operation mode to the power saving mode, a certain time has elapsed since the operation mode was switched to the power saving mode from the viewpoint of returning to the normal mode by sliding the finger. During the period up to this time, it is desirable that the light projecting unit 21 is not turned off so that input by a finger slide operation is possible.

  The connection state detection unit 39 is a terminal state detection unit that detects the connection state by the hinge unit 300 and outputs the detection result to the LED drive unit 41 and the cumulative movement amount calculation unit 32. The connection state detection unit 39 uses a magnetic sensor, a contact type switch, or the like. Composed.

  In the LED drive unit 41, an operation for controlling the light projecting unit 21 is performed based on an instruction from the mode switching unit 37. That is, an operation is performed in which the light projecting unit 21 is turned on in the normal mode and turned off in the power saving mode. Therefore, if there is an incoming call in the power saving mode, the operation mode is switched to the normal mode, so that the light projecting unit 21 is automatically turned on.

  Further, the LED drive unit 41 also performs an operation of controlling the light projecting unit 21 based on the detection result by the connection state detection unit 39. That is, an operation is performed in which the light projecting unit 21 is turned on when the terminal device is in the deployed state and turned off when the terminal device is in the stored state.

  The cumulative movement amount calculation unit 32 clears the cumulative movement amount storage unit 33 based on the operation mode switching instruction from the mode switching unit 37 and resets the cumulative movement amount held in the cumulative movement amount storage unit 33. At the same time, an operation of stopping the movement amount accumulation process is performed until a predetermined time elapses.

  For example, when the operation mode is switched from the power saving mode to the normal mode by an incoming call or the like, and the light projecting unit 21 is turned on, the accumulated movement amount is reset, and during a period from when the fixed time elapses, The operation of starting the integration process is performed based on the fact that a certain amount of time has elapsed without integrating the movement amount.

  Accordingly, in the slide operation signal generation unit 34, after the light projection unit 21 is turned on by an incoming call or the like, the slide operation signal generation unit 34 slides based on the accumulated movement amount calculated from a plurality of movement amounts detected after a certain time has elapsed. An operation for generating an operation signal is performed. Thereby, when the light projection unit 21 is turned on due to an incoming call or the like, it is possible to prevent the movement of the finger from being erroneously detected by the movement amount detection unit 31 and making an input unintended by the user.

  In addition, the cumulative movement amount calculation unit 32 clears the cumulative movement amount storage unit 33 based on the detection result by the connection state detection unit 39 and resets the cumulative movement amount held in the cumulative movement amount storage unit 33. At the same time, an operation of stopping the movement amount accumulation process is also performed until a predetermined time elapses.

  For example, when the connected state is changed from the stored state to the deployed state and the light projecting unit 21 is turned on, the accumulated moving amount is reset, and the moving amount is integrated during a period until a certain time elapses after the reset. Instead, an operation for starting the integration process is performed based on the fact that a certain time has elapsed.

  Therefore, the slide operation signal generation unit 34 generates a slide operation signal based on the accumulated movement amount calculated from a plurality of movement amounts detected after a certain time has elapsed after the transition from the stored state to the deployed state. The operation to generate will be performed. This prevents the movement of the finger from being erroneously detected by the movement amount detection unit 31 when the light projecting unit 21 is automatically turned on by deploying both housings, thereby preventing an input unintended by the user. can do.

  FIG. 4 is a diagram showing an example of the operation of the mobile phone 1 of FIG. 1, in which the key operation by the direction key 203 and the operation of the optical pointing device provided in the determination key 204 are performed continuously. An example of the operation when broken is shown. The detection of the movement of the finger by the movement amount detection unit 31 is repeatedly performed at a constant cycle. For example, the detection of the movement amount is repeatedly performed at a time interval of about 30 ms.

  First, when the user slides his / her finger on the key top 10b to the upper right, the detected value of the movement amount at this time is x = + 25 and y = + 23 in the x-axis direction and the y-axis direction, respectively. The cumulative movement amount is calculated as sum (x) = 25 and sum (y) = 23 by adding these absolute values to 0, respectively.

  Next, when the finger is slid to the lower left, if the detected values of the movement amount at this time are x = −2 and y = −24, respectively, the accumulated movement amount is calculated as the absolute value of the previous accumulated value. By adding the values, sum (x) = 27 and sum (y) = 47 are calculated, respectively.

  Next, when the user presses the down key of the direction key 203, the detected values of the movement amounts at this time are x = 0 and y = 0, respectively. In this case, since the integrated value of the movement amount is reset by operating the direction key 203, the accumulated movement amounts are sum (x) = 0 and sum (y) = 0, respectively.

  Next, when the finger is slid to the upper right, if the detected values of the movement amount at this time are x = + 27 and y = + 25, respectively, the accumulated movement amount is obtained by adding these absolute values to the previous integrated value. By adding, sum (x) = 27 and sum (y) = 25 are calculated, respectively.

  Next, when the finger is slid to the lower left, if the detected values of the movement amount at this time are x == − 30 and y = −24, respectively, the accumulated movement amount is calculated as the previous integrated value. By adding the absolute values, sum (x) = 57 and sum (y) = 49 are calculated, respectively.

  Here, if the threshold value for determining whether or not to generate a slide operation signal in comparison with the cumulative movement amount is 50, the cumulative movement amount sum (x) = 57 in the x-axis direction is Since the threshold value 50 is exceeded, an input mode by a finger slide operation is entered, and a slide operation signal is generated. In this case, the slide operation signal generation unit 34 generates a slide operation signal corresponding to the detected movement amount values x == − 30 and y = −24, and outputs the slide operation signal to the display control unit 35.

  Next, when the finger is slid upward in the input mode by the finger slide operation, if the detected values of the movement amount at this time are x == + 27 and y = + 10, respectively, the accumulated movement amount is Sum (x) = 84 and sum (y) = 59 are calculated, and a slide operation signal corresponding to the detected value of the movement amount is generated.

  Steps S101 to S109 in FIG. 5 are flowcharts showing an example of operations in the mobile phone 1 in FIG. First, the cumulative movement amount calculation unit 32 acquires a detection value of the movement amount from the image processing unit 43 and calculates an integrated value of the movement amount (steps S101 and S102).

  At this time, if the operation of the invalidation key (the direction key 203 and the determination key 204) is detected, the slide operation signal generation unit 34 clears the cumulative movement amount storage unit 33 and resets the integrated value of the movement amount. (Steps S103 and S108). Then, the processing procedure from step S101 to step S103 is repeated until the finger slide operation is completed (step S109).

  On the other hand, when the operation of the invalidation key is not detected, the slide operation signal generation unit 34 compares the integrated amount of movement with the threshold value, and generates a slide operation signal based on the comparison result (Step S103, S104).

  At this time, if the integrated value of the movement amount is equal to or greater than the threshold value, the slide operation signal generation unit 34 generates a slide operation signal corresponding to the detection value of the movement amount and outputs it to the display control unit 35 (step S105). Then, until the finger slide operation is completed, the processing procedure of step S105 is repeated while acquiring the detection value of the movement amount in step S107 (step S106).

  On the other hand, if the integrated value of the movement amount is not equal to or greater than the threshold value, the slide operation signal generation unit 34 repeats the processing procedure from step S101 until the finger slide operation ends (step S109).

  Steps S201 to S207 in FIG. 6 are flowcharts showing an example of the operation when the connection state changes in the mobile phone 1 in FIG. First, the LED drive unit 41 turns on the light projecting unit 21 when the terminal device is transitioned from the housed state to the deployed state (steps S201 and S202).

  At this time, the cumulative movement amount calculation unit 32 resets the movement amount integrated value, and stops the movement amount integration during a period until the fixed time elapses after the timer is activated (steps S203 to S205). Then, if a certain time has elapsed from the state transition to the expanded state, the movement amount accumulation process is started, and this process is terminated (step S206).

  On the other hand, the LED drive unit 41 turns off the light projecting unit 21 when the terminal device transitions from the deployed state to the stored state, and ends this process (steps S201 and S207).

  According to the present embodiment, since the slide operation signal is generated from a plurality of movement amounts detected after the last key operation signal, the movement of a moving body such as a finger is erroneously detected during the key operation, and the slide operation It can suppress that a signal is generated accidentally. Therefore, since it is possible to suppress an input unintended by the user from being performed by the movement of the moving body, the operability can be improved. In addition, since a slide operation signal is generated from a plurality of movement amounts detected after the last key operation signal, even after the operation of the operation key 201, the optical pointing device is operated following the key operation. Desired input.

  In this embodiment, when the operation mode is switched from the power saving mode to the normal mode due to an incoming call, the cumulative movement amount is reset, and the movement amount is integrated based on the fact that a certain time has elapsed since the reset. Although an example in the case where processing is started has been described, the present invention is not limited to this. For example, the light projection unit 21 is turned off based on the operation of the off-hook key at the time of incoming call response, and the light projection unit 21 is turned on based on the operation of the on-hook key at the end of the call to start the movement amount integrating process. Also good.

1 is an external view showing an example of a schematic configuration of a mobile terminal device according to an embodiment of the present invention, and a foldable mobile phone 1 is shown as an example of the mobile terminal device. It is sectional drawing which showed the structural example in the principal part of the mobile telephone 1 of FIG. 1, and the mode of the cross section which cut | disconnected the operation housing | casing 200 by the AA line is shown. FIG. 2 is a block diagram illustrating a configuration example of the mobile phone 1 in FIG. 1, illustrating an example of a functional configuration in the mobile phone 1. FIG. 2 is a diagram showing an example of the operation of the mobile phone of FIG. 1, and shows an operation example when the operation of the direction key 203 and the operation of the optical pointing device are continuously performed. 3 is a flowchart showing an example of an operation in the mobile phone 1 of FIG. 3 is a flowchart showing an example of an operation when the connection state of the mobile phone 1 in FIG. 1 changes.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cellular phone 10a, 10b Key top 10c Storage part 11 Pusher 12, 13 Board | substrate 14 Electrode board 15 Spacer 21 Light projection part 22 Condensing lens 23 Image sensor 31 Movement amount detection part 32 Cumulative movement amount calculation part 33 Cumulative movement amount memory | storage Unit 34 slide operation signal generation unit 35 display control unit 36 key operation detection unit 37 mode switching unit 38 backlight drive unit 39 connection state detection unit 41 LED drive unit 42 light receiving unit 43 image processing unit 100 display casing 101 display 102 for receiving Receiver 200 Operation casing 201 Operation key 202 Transmitting microphone 203 Direction key 203a Left key 203b Right key 204 Enter key 300 Hinge part

Claims (6)

A key operation detecting means for generating a key operation signal based on the operation of the operation key;
A movement amount detecting means having a light projecting portion for emitting detection light and a light receiving portion for receiving the detection light reflected by the moving body, and repeatedly detecting the moving amount of the moving body;
An accumulated movement amount calculating means for calculating an accumulated movement amount by integrating two or more of the movement amounts, and resetting the accumulated movement amount when the key operation signal is input during the accumulation of the accumulated movement amount;
A portable device comprising: a slide operation signal generating unit configured to compare the cumulative movement amount with a threshold value, switch to a slide operation input mode based on the comparison result, and generate a slide operation signal indicating the movement amount. Terminal device. A light projecting control means for turning on the light projecting unit when receiving an incoming call;
The slide operation signal generation means is configured to perform the above operation based on the cumulative movement amount calculated from two or more movement amounts detected after a certain time has elapsed after the light projecting unit is turned on by an incoming call. The mobile terminal device according to claim 1 , wherein a slide operation signal is generated. An operation housing having the operation keys;
A display housing having a display for displaying information;
Coupling means for foldably coupling the operation casing and the display casing;
A connected state detecting means for detecting a connected state by the connecting means;
Based on the detection result by the connection state detection means, provided with a light projection control means for turning on the light projection unit,
The slide operation signal generating means is calculated from two or more movement amounts detected after a certain time has elapsed after the transition from the housed state in which both housings are folded to the deployed state in which both housings are deployed. The mobile terminal device according to claim 1 , wherein the slide operation signal is generated based on the accumulated movement amount.   The portable terminal device according to claim 1, wherein the operation key is disposed adjacent to the light receiving unit.   2. The portable terminal device according to claim 1, wherein the operation key includes a plurality of direction keys for instructing up and down or left and right, and is disposed with the light receiving unit interposed therebetween.   2. The operation key according to claim 1, wherein the operation key is a key sandwiched between a plurality of direction keys for instructing up and down or left and right, and the light receiving unit is disposed in the operation key. Mobile terminal device.

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