JP2013117916A - Input display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an input display device constituted so as to improve operability to a plurality of keys while suppressing deterioration of an appearance.SOLUTION: Touch positions touched by an operator are specified for every key (S120), presence/absence of erroneous input (S130) and its content are sampled based on detection of reaction areas which can be set for every key. When the number of samples is equal to or more than a default value (S170), distribution of the specified touch positions is calculated for every key (S180), reaction areas for every key are determined (S220) so as to expand the reaction areas for every key in the direction in which the touch positions are eccentrically distributed based on the calculated distribution of the touch positions. Since it becomes possible to match the reaction areas for every key to an operation state of the operator, and since operability to a plurality of keys is improved, on the other hand, size of the display area is not changed, deterioration of appearance is suppressed.

Description

  The present invention relates to an input display device.

  Conventionally, a touch panel having a display area for displaying a plurality of keys and a reaction area for detecting an operation by an operator for each key in the display area, and an operation position specification for specifying an operation position for the reaction area for each key And a control unit that changes the size of the display area for each key based on the variation in the operation position specified by the operation position specifying unit (see, for example, Patent Document 1).

  In this case, by changing the size of the display area for each key, the display area can be matched to the operation state of the operator, so that the operability for the keys can be improved. For this reason, it is possible to reduce input mistakes and increase input speed.

JP 2011-150489 A

  In the above-mentioned Patent Document 1, it is possible to adjust the display area to the operation state of the operator by changing the size of the display area for each key. Will be different for each key, and will look bad.

  An object of the present invention is to provide an input display device capable of improving the operability of keys while suppressing deterioration in appearance.

In order to achieve the above object, in the invention described in claim 1,
A touch panel (10) including a display area for displaying each of a plurality of keys and a reaction area for detecting, for each key, an operator touching the keys;
Based on detection of the reaction area for each key, position specifying means (S120) for specifying the touch position touched by the operator of the touch panel for each key;
Distribution calculation means (S180) for calculating the distribution of touch positions specified by the position specifying means for each key;
Based on the distribution of the touch positions calculated by the calculation means, calculation means for obtaining the reaction area for each key obtained by enlarging the reaction area for each key in a direction in which the touch positions are unevenly distributed (S200). When,
And control means (S220) for reflecting the reaction area obtained for each key by the calculating means on the touch panel.

  According to the first aspect of the present invention, it is possible to match the reaction area to the operation state of the operator, so that a character input environment with few erroneous inputs (subtle and pleasant to you) is provided. In addition to this, since the size of the display area is not changed, deterioration in appearance can be suppressed. Therefore, it is possible to provide an input display device capable of improving the operability for a plurality of keys while suppressing deterioration in appearance.

In invention of Claim 2, the operator specific means (S110) which specifies the said operator is provided,
The distribution calculating means calculates the distribution of the touch position for each key for each operator specified by the operator specifying means,
The said control means reflects the said reaction area calculated | required for every said key on the said touch panel for every said operator.

In the invention according to claim 3, correctness determination means (S130) for determining whether or not the operator touches a key other than the key that should be touched by the operator,
Key determination means (S140) for determining whether or not the touch by the operator is a touch on a key adjacent to the key to be originally touched;
When the correctness determination means determines that the operator touches the key that should be touched, the touch position specified by the position specifying means is stored as a touch position for the key corresponding to the touch position. First registration means (S160);
The correctness determination means determines that the operator touches a key other than the key that should be originally touched, and the touch by the operator is a touch on a key adjacent to the key that should be touched originally. A second registration unit (S150) for storing the touch position specified by the position specifying unit as a touch position with respect to a key adjacent to the key to be originally touched when the key determining unit determines that there is a key;
The distribution calculating means (S180) calculates the touch position distribution for each key based on the touch positions for each key stored by the first and second registration means (S150, S160). It is characterized by.

  According to the third aspect of the present invention, when the operator touches the key adjacent to the key to be originally touched, the touch position specified by the position specifying means is determined for the key adjacent to the key to be originally touched. It memorize | stores as a touch position and calculates the distribution of a touch position for every key. Therefore, the reaction region can be more accurately matched to the operation state of the operator.

In the invention according to claim 4, the touch panel is configured such that characters or symbols are input by touching the keys by the operator.
The touch panel includes the display area for displaying a correction key (13) for canceling the input of the character or symbol as the key,
The correctness determination means (S130)
When the correction key is touched by the operator after a character or symbol has been input by the operator's touch on the key, the correctness / incorrectness determination unit is configured to detect the key other than the key to be originally touched. To determine that the operator has touched,
When a character or symbol is input by the operator's previous touch on the key and a character or symbol is input by the operator's current touch on the key, the correctness determination unit is The touched key is set as the key that should be touched, and it is determined that the operator touches the key that should be touched.

In the invention according to claim 5, the number for determining whether or not the total number of touch positions for each key stored by the first and second registration means (S150, S160) is equal to or greater than a prescribed number. Determination means (S170),
When the number determination means determines that the total number of touch positions for each key stored by the first and second registration means is greater than or equal to a specified number, the distribution calculation means is specified by the position specification means. The distribution of touched positions is calculated for each key.

According to a sixth aspect of the present invention, there is provided determination means (S320, S350) for determining whether or not the reaction regions obtained by the calculation means in two adjacent keys among the plurality of keys overlap each other. ,
When the determination unit determines that the reaction regions obtained by the calculation unit overlap with each other in the two adjacent keys, an intermediate line between the reaction regions of the two adjacent keys is calculated and calculated. The reaction areas of the two adjacent keys are distinguished from each other using the intermediate line as a boundary.

In invention of Claim 7, a touch panel (10) provided with the display area | region which each displays a some key, and the reaction area | region which detects the touch by the operator with respect to the said key for every key,
Storage means (40) for storing a plurality of vocabularies;
Touch determination means (S400) for determining for each key whether or not the operator has touched the key;
When the touch determination unit determines that the operator touches the display area for each key, it is estimated that the operator touches next based on a plurality of vocabularies stored in the storage unit. Candidate selection means (S410) for selecting key candidates
And setting means (S420) for enlarging the reaction area of the key candidate selected by the candidate selecting means.

  According to the seventh aspect of the present invention, the response area of the key candidate estimated to be touched next by the operator is expanded, so that the operability for a plurality of keys can be improved. In addition to this, since the size of the display area is not changed, deterioration in appearance can be suppressed. Therefore, it is possible to provide an input display device capable of improving the operability for a plurality of keys while suppressing deterioration in appearance.

Specifically, in the invention according to claim 8, position specifying means (S120) for specifying, for each key, a touch position touched by the operator of the touch panel;
Distribution calculation means (S180) for calculating the distribution of touch positions specified by the position specifying means for each key;
The setting means (S420) is characterized in that, based on the distribution calculated by the distribution calculating means, the reaction area of the key candidate is expanded in a direction in which the touch positions are unevenly distributed.

  According to the eighth aspect of the present invention, the response area of the key candidate that is estimated to be touched next by the operator is expanded in the direction in which the touch position is unevenly distributed, so that the operability for the key is further improved. can do.

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

It is a figure which shows the circuit structure of the input display apparatus for vehicles in 1st Embodiment of this invention. FIG. 2 is a layout diagram of the vehicle input display device of FIG. 1. It is a figure which shows the function of CPU of FIG. It is a figure which shows arrangement | positioning of the reaction area | region for every key of the touch panel of FIG. It is a flowchart which shows the detail of the reaction area | region determination process of FIG. It is a flowchart which shows the detail of a one part step of FIG. It is a figure for demonstrating the reaction area | region determination process of FIG. It is a figure for demonstrating the reaction area | region determination process of FIG. It is a figure for demonstrating the reaction area | region determination process of FIG. It is a figure for demonstrating the reaction area | region determination process of FIG. It is a figure for demonstrating the reaction area | region determination process of FIG. It is a figure for demonstrating the reaction area | region determination process of FIG. It is a figure for demonstrating the reaction area | region determination process of FIG. It is a figure for demonstrating the reaction area | region determination process of FIG. It is a flowchart which shows the detail of the control processing of CPU in 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other are given the same reference numerals in the drawings in order to simplify the description.

(First embodiment)
1 and 2 show a first embodiment of an input display device 1 of the present invention. FIG. 1 is a block diagram showing an electrical configuration of the vehicle input display device 1 of the present embodiment.

  The vehicle input display device 1 constitutes a navigation device, and includes a touch panel 10, proximity sensors 20 a, 20 b, 30 a, 30 b, a memory 40, a wireless circuit 50, and a CPU (central processing unit) 60.

  The touch panel 10 includes a display screen (display area) that displays various images such as a keyboard and a touch sensor that detects a touch by an operator's finger on the display screen. As the display screen, for example, a liquid crystal display or organic electroluminescence is used. In the touch sensor, a reaction area is assigned to each key. Thus, the operator's touch on the key is detected for each key by detecting the reaction area for each key.

  In the present embodiment, as shown in FIG. 2, the touch panel 10 is disposed toward the rear of the vehicle at the center of the instrument panel 2 in the vehicle interior. FIG. 2 is a view of the touch panel 10 viewed from the rear side of the vehicle interior. Reference numeral 3 in FIG. 2 is a steering, and reference numeral 4 in FIG. 2 is an instrument panel.

  Each of the proximity sensors 20a, 20b, 30a, and 30b in FIG. 1 is a sensor that detects that a detection target has approached. The proximity sensor 20a is arranged on the left side with respect to the touch panel 10, as shown in FIG. The proximity sensor 20 b is disposed on the lower left side with respect to the touch panel 10. The proximity sensor 30 a is disposed on the right side with respect to the touch panel 10. The proximity sensor 30 b is disposed on the lower right side with respect to the touch panel 10.

  In addition, proximity sensor 20a, 20b, 30a, 30b is used in order to determine whether the operator touched with respect to the touch panel 10 is a driver so that it may mention later.

  The memory 40 includes a ROM, a RAM, a hard disk, and the like, and forms a database (dictionary) that stores various vocabularies such as facility names and place names in addition to the computer program of the CPU 60. The wireless circuit 50 performs wireless communication with the electronic key 51 via the antenna. The electronic key 51 performs door lock / unlock and start permission of the traveling engine via wireless communication with the in-vehicle wireless device, and stores an ID code for each user (that is, an operator). .

  The CPU 60 performs a keyboard display process for displaying a keyboard on the touch panel 10 and a reaction area determination process for determining the size of the reaction area for each key of the keyboard.

  As shown in FIG. 3, the reaction region determination process is performed by the CPU 60 using an operator identification unit 61, an erroneous input detection unit 62, a key operation coordinate storage unit 63, a variation calculation unit 64, a usage frequency storage unit 65, and a prediction conversion candidate calculation. This is implemented by the unit 66 and the key reaction region control unit 67.

  Next, prior to the description of the operation of the vehicle input display device 1 of the present embodiment, the configuration of the reaction area of the touch panel 10 will be described.

  As shown in FIG. 4, the touch panel 10 has a minimum reaction area set for each key. The minimum area for each key is formed in a rectangular shape. In FIG. 4, 15 a, 15 b, 15 c, and 15 d are the minimum regions of the reaction region corresponding to the keys “su”, “ku”, “se”, and “ko”. In the reaction area, the maximum area is set for each key. The maximum area is formed in a rectangular shape for each key. The maximum area 17a in FIG. 4 is the maximum area of the reaction area corresponding to the “su” key. As will be described later, the maximum area is set to be independent of the minimum area of the reaction area of adjacent keys (that is, the up / down / left / right keys). For this reason, for example, the reaction area of the key “ku” is the minimum area of the key “ku” even if the reaction areas of the adjacent “su”, “se”, and “ko” keys are expanded as described later. 15b is secured.

  Further, in an initial state before performing a reaction area determination process described later, the reaction area is set as a basic area for each key. The basic region has an area smaller than that of the maximum region and larger than that of the minimum region. That is, the reaction area for each key is set so that, by default, the area is smaller than the area of the maximum area and larger than the area of the minimum area. Reference numeral 16a in FIG. 4 denotes a basic area of the key “su”.

  In this way, the maximum and minimum areas of the reaction area are set for each character key, and the reaction area is set within the range between the maximum and minimum areas by the reaction area determination process described later. become.

  Next, the detail of the process of CPU60 of the vehicle input display apparatus 1 of this embodiment is demonstrated.

  The CPU 60 performs keyboard display processing and reaction area determination processing in a time-sharing manner. Hereinafter, the keyboard display process and the reaction area determination process will be described separately.

(Keyboard display processing)
In the keyboard display process, as shown in FIG. 1, the keyboard is displayed on the display screen of the touch panel 10. The keyboard has Hiragana characters or symbols (for example, "A", "I" ... "N", """," ゜ "" A "," I "..." T ","-" )) In addition to the 63 character keys 10a, 10b, 10c,... 10f, a search key 11 for performing a search (name / reading search) for facilities including the input vocabulary, A kanji input key 12 for converting the inputted vocabulary into kanji is provided. The keyboard is provided with a correction key 13 for correcting an input character and a display unit 14 for displaying the input character.

  In the keyboard display process, each time the operator touches the character keys 10a... 10f is detected by the reaction area, the characters corresponding to the touched character keys are displayed on the display unit 14. That is, each time a touch on the character key by the operator is detected by the reaction area, a character corresponding to the touched character key is input. For example, as shown in FIG. 1, the vocabulary “Toyota” is input by the operator's touch on the character keys “to”, “yo”, and “ta”, and the vocabulary “toyota” is displayed. Displayed on the unit 14. After that, when the operator's touch on the reaction area of the search key 11 is detected, the facility name and place name including the inputted vocabulary “Toyota” are searched based on the database.

  When an operator's touch on the correction key 13 is detected by the reaction area of the correction key 13, one character input prior to the detection of the touch is canceled. That is, of the character group displayed on the display unit 14, the display of one character input prior to the detection of the operator's touch on the reaction area of the correction key 13 is erased.

(Reaction area determination process)
The CPU 60 executes a reaction region determination process according to the flowchart shown in FIG. The reaction area determination process is a process for determining a reaction area for each character key. FIG. 5 is a flowchart showing details of the reaction region determination process.

  First, in step S100, it is determined whether or not any one of the character keys 10a,.

  Specifically, in step S100, when it is determined that any one of the character keys 10a,..., 10f is touched by the operator based on the output signal of the touch sensor, It is determined that the character key is touched.

  Next, in step S110, an operator is specified. Specifically, based on the output signal of at least one of the proximity sensors 20a, 20b, 30a, and 30b, it is determined whether the operator who touched the one character key is a driver.

  Here, when it is determined that an object to be detected has approached at least one of the proximity sensors 30a and 30b, it is determined that the operator who touched the one character key described above is the driver. In this case, an ID code is acquired by wireless communication with the electronic key 51 via the wireless circuit 50, and an operator is specified by the acquired ID code.

  In this case, in step S120, a touch position (that is, coordinates) touched by the operator with respect to the one character key is specified. Hereinafter, the specified touch position is referred to as sample data. In addition, the number of touches touched for each key is counted. Note that the count value of the number of touches is used for a setting process of a reaction region of a frequently used key to be described later.

  Next, it is determined whether or not a character is erroneously input by touching the above-described one character key by the operator (step S130). That is, it is determined whether or not a character different from the character to be originally input has been input by the touch of the operator on the one character key.

  Specifically, when it is determined that the operator touches the correction key 13 after the operator touches one key of the character, it is determined that a character different from the character that should be originally input is input. To do. That is, it is determined as YES in step S130 because an erroneous input of characters has been performed.

  Next, in step S140, it is determined whether or not the operator has touched a key adjacent to one character key touched by the operator (hereinafter referred to as an adjacent character key). That is, it is determined whether or not the operator has touched a character key adjacent to the key that was touched first in order to input a character that is to be substituted for the character that was initially input.

  Here, when the operator touches a character key other than the above-mentioned adjacent character keys, NO is determined in step S140, and the process returns to step S110.

  On the other hand, when the operator touches the adjacent character key, YES is determined in step S140. Accordingly, in step S150, the sample data specified in step S120 is stored in the memory 40 for each operator as a position with respect to the adjacent character key touched by the operator.

  In addition, when it is determined that the operator touches any one of the character keys 10a to 10f after the operator touches the one character key, the one character key described above is touched. In step S130, NO is determined that a character to be originally input is input by the operator's touch. Hereinafter, after the operator touches one character key described above, the character key that the operator touches among the character keys 10a to 10f is referred to as a re-input character key for convenience.

  Next, in step S160, the sample data specified in step S120 is stored in the memory 40 for each operator as the touch position for the one character key.

  As described above, the sample data is stored in the memory 40 for each operator as the position with respect to one character key touched first or the character key adjacent to the one character key.

  Next, in step S170, it is determined whether or not the total number of sample data stored in the memory 40 (hereinafter referred to as sample data number) is equal to or greater than a specified number.

  Here, when the number of sample data is less than the prescribed number, NO is determined in step S170, and in the next step S190, all of the sample data for each character key registered in the memory 40 are collected to form one key. The position data superimposed on the X-Y coordinates is calculated, and the variation (distribution) of a plurality of sample data (that is, touch positions) constituting the obtained position data is calculated for each operator. Based on the calculated variation of the plurality of sample data, a reaction area for each character key is calculated (step S200).

  And it correct | amends so that the response area | region of the character key with high use frequency may be expanded among the reaction area | regions of the character key 10a, ..., 10f calculated in this way (step S210). Details of the processes in steps S200 and S210 will be described later. Thereafter, the reaction area for each key calculated in steps S200 and S210 is reflected on the touch panel 10 (step S220).

  As described above, when the operator is specified based on the ID code from the electronic key 51 in step S110, the reaction area for each character key is calculated for each operator, and the calculated reaction area for each key is calculated. Is reflected on the touch panel 10 for each operator.

  Next, the operator is specified in step S110, and then the position touched by the operator with respect to the re-input character key or the adjacent character key is specified (step S120). And each process of step S130, step S140, step S150, step S170, step S180, and steps S200-S220 is implemented.

  After that, when the same operator is specified as an operator in step S110 and the operator continues touching the keys 10a to 14, the processing of steps S110, S120,. More than the specified number.

  That is, when the number of sample data of the same operator exceeds the specified number, YES is determined in step S170, and sample data for each character key (ie, touch position) registered in the memory 40 is determined in next step S180. Is calculated (see FIG. 7A). In FIG. 7A, the x mark indicates sample data. That is, the distribution of sample data for each operator can be calculated for each character key.

  Specifically, the distribution function f (x) and distribution function f (y) of the sample data are obtained for each character key as the variation of the sample data for each character key.

  Here, the distribution function f (x) indicates the distribution (variation) of the sample data in the X direction, the vertical axis is the number of sample data, and the horizontal axis is the X direction of the character key (FIG. 7A). ) In the left-right direction). The distribution function f (y) indicates the distribution (variation) of sample data in the Y direction, the horizontal axis is the number of sample data, and the vertical axis is the Y direction of the character key (see FIG. 7A). This function is used as the coordinates of the sample data. Based on the calculated variation in sample data for each character key, a reaction area for each character key is calculated (step S200). After that, correction is performed so as to widen the response area of the frequently used character key among the calculated response areas of the character keys 10a,..., 10f (step S210). The processes in steps S200 and S210 will be described later.

  And the reaction area | region for every key calculated in step S200, S210 in this way is reflected on the touch panel 10 (step S220).

  Here, when an operator is specified based on the ID code from the electronic key 51 in step S110, a reaction area for each character key is calculated for each operator, and the calculated reaction for each operator is calculated. Each area key is reflected on the touch panel 10.

  Next, details of the processing in step S200 described above will be described. FIG. 6 is a flowchart showing details of the process in step S200 of FIG.

  First, in step S300, a reaction region boundary line Xa is obtained for each character key based on the distribution function f (x).

  Here, the boundary line Xa is a boundary line in the direction in which the sample data is unevenly distributed in the X direction of the reaction region. The boundary line Xa is a line segment set to a width of the standard deviation σ (see FIG. 8A) with respect to the average value Xh of the x coordinates of the sample data. The accuracy of key input is maintained with a probability of 0.954 at 2σ.

  Hereinafter, for convenience, a direction in which the sample data is biased and distributed in the X direction of the reaction region is referred to as a distribution direction, and a direction opposite to the distribution direction in the X direction is referred to as an anti-distribution direction.

  Next, in step S310, it is determined for each character key whether the boundary line Xa deviates from the basic area.

  When the boundary line Xa is located inside the basic region as indicated by the alternate long and short dash line in FIG. 7B, NO is determined in step S310. In this case, the boundary line in the X direction in the reaction region is temporarily set as the boundary line in the X direction in the basic region, and the boundary line in the anti-distribution direction in the X direction in the reaction region is basically Temporarily set the boundary line in the anti-distribution direction in the X direction in the region (step S311). Then, it is determined for each character key whether or not the boundary line Xa of the reaction region of the right / left character key overlaps the reaction region to be determined for which two boundary lines in the X direction are temporarily set ( Step S320). The right / left character key is a right character key or a left character key adjacent to the character key to be determined in the left-right direction (that is, the X direction).

  Here, when the boundary Xa of the reaction area of the right / left character key does not overlap with the reaction area to be determined in which the two boundary lines in the X direction are provisionally set in step S311, the step S320 is performed. Is determined as NO and the process proceeds to the next step S322. Then, the two boundary lines in the X direction temporarily set in step S311 are determined as the two boundary lines in the X direction of the reaction region to be determined.

  Further, in the above-described step S310, when the boundary line Xa is located outside the basic region as indicated by the solid line in FIG. In this case, the boundary line Xa is provisionally set as the boundary line in the X direction distribution direction in the reaction region, and the boundary line in the X direction anti-distribution direction in the basic region is set in the X direction anti-distribution direction in the reaction region. Temporarily set as a boundary line.

  If the boundary line Xa of the reaction area of the right / left character key does not overlap with the reaction area to be determined on which the two boundary lines in the X direction are provisionally set, NO is determined in step S320. Then, the process proceeds to the next step S322. Then, two boundary lines in the X direction temporarily set as described above are determined as two boundary lines in the X direction of the reaction region to be determined.

  That is, the boundary line Xa is determined as a boundary line in the X direction in the reaction region, and the boundary line in the X direction in the reaction region is defined as the boundary line in the X direction in the reaction region. Determine as. Thereby, the reaction region expands in the distribution direction in the X direction.

  In addition, when it is determined YES in step S310 described above, either the right character key or the left character key is selected for the reaction region to be determined in which two boundary lines in the X direction are temporarily set as described above. When the boundary line Xa of the character key reaction area does not overlap, but the boundary line Xa of the other character key of the right character key and the left character key overlaps (step S320: YES), the next Thus, two boundary lines in the X direction of the reaction region to be determined are determined (step S321).

  Specifically, it is determined to use the above-described temporarily set boundary line as the boundary line on the one character key side in the reaction region to be determined. As the boundary line on the other character key side of the determination target reaction area, an intermediate line between the determination target reaction area and the remaining other character key reaction area is calculated, and this calculation is performed. The middle line is the boundary line.

  For example, when the boundary line Xa of the reaction area of the right character key does not overlap with the reaction area of the determination target, but the boundary line Xa of the reaction area of the left character key overlaps, As the boundary line on the right character key side, it is determined that the above-described temporarily set boundary line is used. As the boundary line on the left character key side of the determination target reaction area, an intermediate line between the determination target reaction area and the left character key reaction area is calculated, and the calculated intermediate line is used as the determination target reaction area. The boundary line between the reaction area and the reaction area of the left character key is determined.

  Hereinafter, calculation of the intermediate line will be described. First, as shown in FIG. 9, the distribution function indicating the distribution in the X direction of the sample data of the character key to be determined is defined as f1 (x), and the distribution function indicating the distribution in the X direction of the sample data of the right / left character key. Is set to f2 (x), and the rejection area of the distribution function f1 (x) (hatched area in the figure) and the rejection area of the distribution function f2 (x) (hatched area in the figure) have the same area. An intermediate line is calculated, and the calculated intermediate line is determined as a boundary line between the reaction area of the character key to be determined and the reaction area of the right / left character key (that is, the one character key).

  In addition, when the boundary region Xa of the character key reaction region of both the right character key and the left character key overlaps the reaction region to be determined in which two boundary lines in the X direction are temporarily set as described above, (Step S320: YES), two boundary lines in the X direction of the reaction region to be determined are determined as follows (step S321).

  First, the distribution function f1 (x) of the sample data of the character key to be determined is calculated in the same manner as the calculation of the intermediate line between the reaction region of the character key to be determined and the reaction region of the right / left character key. And the distribution function of the right character key sample data is f2 (x), and the rejection area of the distribution function f1 (x) and the distribution function are set so that the rejection area of f2 (x) has the same area. The calculated intermediate line is set as a boundary line between the reaction region of the character key to be determined and the reaction region of the right character key.

  In addition, the intermediate line between the reaction area of the character key to be determined and the reaction area of the left character key is also an intermediate line between the reaction area of the character key to be determined and the reaction area of the right character key. Similarly, the calculated intermediate line is determined as a boundary line between the reaction area of the character key to be determined and the reaction area of the left character key.

  Thus, two boundary lines in the X direction of the reaction region for each character key are determined.

  Next, in step S330, the boundary line Ya of the reaction region is obtained for each character key based on the distribution function f (y).

  Hereinafter, for convenience, a direction in which the sample data is biased and distributed in the Y direction of the reaction region is referred to as a distribution direction, and a direction opposite to the distribution direction in the Y direction is referred to as an anti-distribution direction.

  Here, the boundary line Ya is a line segment in the direction in which the sample data is unevenly distributed in the Y direction of the reaction region. The boundary line Ya is a line segment having a standard deviation σ (see FIG. 8A) with respect to the average value Yh of the x coordinates of the sample data.

  Thereafter, as in the case where two boundary lines in the X direction of the reaction region for each character key are determined, two boundary lines in the Y direction of the reaction region for each character key are determined using the boundary line Ya (step S340, S341, S350, S351).

  Here, step S340 corresponds to step S310, step S341 corresponds to step S311, step S350 corresponds to step S320, and step S351 corresponds to step S321.

  For example, when the boundary line Ya is located outside the basic region (step S340: YES), the boundary line Ya is temporarily set as a boundary line in the Y direction in the reaction region, and Y in the basic region is set. A boundary line in the anti-distribution direction of the direction is temporarily set as a boundary line in the anti-distribution direction in the Y direction in the reaction region.

  Then, when the boundary line Ya of the reaction area of the up / down character key does not overlap with the reaction area to be determined on which the two boundary lines in the Y direction are temporarily set, NO is determined in step S350. Then, the process proceeds to the next step S352. Then, the two boundary lines in the Y direction temporarily set in step S341 described above are determined as the two boundary lines in the Y direction of the reaction region to be determined. Thereby, the reaction region expands in the distribution direction in the Y direction. The upper / lower character key means an upper character key or a lower character key with respect to a character key to be determined.

  As described above, two boundary lines in the X direction and two boundary lines in the Y direction of the reaction region are determined for each character key.

  Next, in step S360, it is determined whether or not the character key reaction area to be determined overlaps the diagonal character key reaction area.

  Here, the diagonal character keys are a lower right character key, an upper right character key, a lower left character key, and an upper left character key.

  The lower right character key is a character key located on the lower right side with respect to the character key to be determined, the lower left character key is a character key located on the lower left side with respect to the character key to be determined, The upper right character key is a character key positioned on the upper right side with respect to the character key to be determined, and the upper left character key is a character key positioned on the upper left side with respect to the character key to be determined.

  FIG. 10 shows an example in which the response region of the character key “shi” overlaps the reaction region of the character key “ku”.

  Here, when the reaction regions of the lower right character key, the upper right character key, the lower left character key, and the upper left character key are independent from the reaction region of the character key to be determined (step S360). : NO), no correction is applied to the reaction area for each character key determined as described above.

  In addition, the reaction area of the character key to be judged overlaps with the reaction area of any one of the lower right character key, upper right character key, lower left character key, and upper left character key, and the rest When the character key reaction area and the determination target character key reaction area are independent (step S360: YES), the diagonal character key reaction area and the determination target character key reaction area are as follows. Is determined (step S361).

  For example, the reaction area of each of the upper right character key, lower left character key, and upper left character key is independent of the reaction area of the character key to be determined, and the determination target is compared with the reaction area of the lower right character key. When the character key reaction areas overlap, the direction connecting the center of the basic area of the character key to be determined and the center of the basic area of the lower right character key is the K coordinate, and the character key to be determined in the K coordinate The distribution function f1 (k) of the sample data and the distribution function f2 (k) of the sample data of the lower right character key in the K coordinate are obtained. The distribution function f1 (x) and the distribution function f2 (k) are functions having the vertical axis as the number of sample data and the horizontal axis as the K coordinate of the sample data in the diagonal direction of the character key. Then, in the region where the distribution function f1 (x) and the distribution function f2 (k) overlap with each other, an intermediate line is calculated so that the rejection area is the same area.

  Here, as shown in FIG. 12, FIG. 13, and FIG. 14, an intermediate line is used for an overlapping region (see FIG. 10) in which the response region of the character key to be determined and the response region of the lower right character key overlap each other. Both reaction areas are distinguished from each other on the boundary.

  For example, as shown in FIG. 12, when the intermediate line is located on the character key to be determined (“shi” character key) side, the overlapping region belongs to the reaction region of the “ku” character key.

As shown in FIG. 13, when the middle line is located between the character key to be determined (“shi” character key) and the lower right character key (“ku” character key), the middle of the overlapping region The area on the character key side of “shi” with respect to the line belongs to the reaction area of the character key of “shi”, and the area on the character key side of “ku” with respect to the middle line in the overlap area It belongs to the key reaction area.

  As shown in FIG. 14, when the intermediate line is located on the character key (“ku” character key) side to be determined, the overlapping region belongs to the reaction region of the “shi” character key.

  As described above, since the reaction areas of the upper right character key, lower left character key, and upper left character key are independent from the reaction area of the character key to be determined, the upper right character key, lower left character key No correction is applied to the boundary between the character key and the reaction region of the upper left character key and the reaction region of the character key to be determined.

  Furthermore, when the reaction area of the four diagonal character keys such as the lower right character key, the upper right character key, the lower left character key, and the upper left character key overlaps the reaction area of the character key to be determined ( Step S360: YES), as in the case of the intermediate line between the reaction area of the lower right character key and the reaction area of the character key to be determined as described above, the reaction area of the four oblique character keys and the determination object of the determination object An intermediate line between the character key reaction area is obtained for each oblique character key, and the oblique character key reaction area and the determination target character key reaction area are oblique characters with the intermediate line for each oblique character key as a boundary. Differentiate by key.

  As described above, the reaction region is determined for each character key using the boundary line of the X coordinate, the boundary line of the Y coordinate, and the intermediate line of the K coordinate.

  After that, according to the count value of the number of touches for each key, the most frequently touched key among the character keys 10a,. A reaction region is calculated by enlarging the reaction region calculated in the above-described step S200 to a similar shape at a constant magnification (for example, 1.1 times) in the selected high use frequency key (step S210). If the response area of the character key to be determined is enlarged at a certain magnification, if the enlarged reaction area overlaps with the reaction area of the left / right character key or the upper / lower character key, the process of step S210 Is not implemented.

  Next, details of the processing in step S190 in FIG. 5 will be described.

  First, in step S190, position data obtained by collecting sample data for each character key (that is, touch position) on the XY coordinates of one key is created, and X of a plurality of sample data constituting the position data is created. A distribution function f (x) indicating the distribution in the direction and a distribution function f (y) indicating the distribution in the Y direction of the plurality of sample data constituting the position data are obtained. Then, using the obtained distribution function f (x) and distribution function f (y), all reaction regions of the character keys 10a,..., 10f are calculated according to the flowchart of FIG. ).

  Since the calculation of the reaction area for each character key using the distribution function f (x) and the distribution function f (y) is the same as described above, the description thereof is omitted.

  In this way, the reaction areas are determined using the distribution function f (x) and the distribution function f (y) so that all the reaction areas of the character keys 10a,.

  After that, according to the count value of the number of touches for each key, the most frequently touched key is selected as the high frequency key among the character keys 10a,. A reaction region is calculated by enlarging the reaction region into a similar shape at a constant magnification (eg, 1.2 times) (step S210).

  Here, when the response area of the character key to be determined is enlarged at a constant magnification, when the enlarged reaction area overlaps the reaction area of the left / right character key or the upper / lower character key, The process of step S210 is not performed.

  When it is determined in step S110 that the detection object has approached at least one of the proximity sensors 20a and 20b, an occupant seated in the passenger seat touched by the one character key described above It is determined that In this case, the operator cannot be specified using the ID code acquired from the electronic key 51. In this case, the processes of steps S130, S140, S150 (or S160), S180 (or 190), S200, S210, and S220 are not performed. For this reason, distribution calculation is not performed on the sample data for each character key.

  According to the embodiment described above, the input display device 1 is configured such that the operator touches the display area and the keys 10a to 14 for displaying the character keys 10a, 10b, 10c,. The touch panel 10 includes a reaction area for detecting each key, and the CPU 60 specifies, for each key, a touch position touched by the operator in the touch panel 10 based on detection of the reaction area for each key (step). In step S120, the distribution of the specified touch positions is calculated for each key (step S180), and the reaction area for each key is expanded in a direction in which the touch positions are unevenly distributed based on the calculated distribution of touch positions. Calculate the reaction area for each key.

  Here, when an operator is specified by the ID code of the electronic key 51, the reaction area is calculated for each operator.

  Accordingly, the reaction area for each key can be matched with the operation state of the operator, and therefore a character input environment with few erroneous inputs (subtle and pleasant to the user) is provided. In addition to this, since the size of the display area is not changed, deterioration in appearance can be suppressed. Therefore, it is possible to provide an input display device capable of improving the operability for a plurality of keys while suppressing deterioration in appearance.

  In the present embodiment, when the CPU 60 determines that the operator has touched the character key that should be touched (step S130: NO), the touch position touched by the operator is touched on the key corresponding to the touch position. Stored as a position (step S160), it is determined that the operator touches a character key other than the character key that should be originally touched (step S130: YES), and the touch by the operator should be touched originally When it is determined that the touch is on the character key adjacent to the character key (step S140: YES), the touch position is stored in the memory 40 as the touch position on the character key adjacent to the character key to be touched (step S150). Then, the CPU 60 calculates the distribution of touch positions for each key based on the touch positions for each key stored in steps S150 and S160 (step S180).

  Therefore, when the operator touches the character key adjacent to the character key to be originally touched, the touch position touched by the operator is stored as the touch position for the character key adjacent to the character key to be originally touched, The distribution of touch positions is calculated for each key. Therefore, the reaction region can be more accurately matched to the operation state of the operator.

  In this embodiment, the boundary Xa (Ya) of the reaction area of the right / left character key (or up / down character key) with respect to the reaction area of the character key adjacent to the reaction area of the character key to be determined. ) Overlap, the dead zone area is not provided, and an intermediate line between the reaction area of the character key to be determined and the reaction area of the right / left character key (or up / down character key) is displayed on both reaction areas. The boundary of For this reason, the operator who touches the key does not feel uncomfortable.

  Moreover, in the above-mentioned patent document 1, since the size of the display area is changed for each key, the display area is different for each key, so that the user finely adjusts the display area in order to suppress deterioration in appearance It was necessary. On the other hand, in this embodiment, since the display area for each key is not changed, fine adjustment of the display area by the user is unnecessary.

(Second Embodiment)
In the first embodiment described above, the example in which the reaction area is enlarged for each key according to the distribution function of the sample data has been described. Instead, in the present embodiment, the following is performed according to the previously input character group. An example of enlarging the response region of the character key that is estimated to be input to will be described with reference to FIG.

  FIG. 15 executes the reaction region determination process of the CPU 60 of this embodiment.

  The CPU 60 performs keyboard display processing, reaction area determination processing, and time division. Since the keyboard display process is the same as the keyboard display process of the first embodiment described above, the description of the keyboard display process is omitted, and the reaction region determination process of the present embodiment will be described below.

  First, in step S400, it is determined whether or not any one of the character keys 10a, 10b, 10c,. When one character key is touched, YES is determined in step S400.

  Here, a character input next to a character corresponding to one character key touched by the operator (hereinafter referred to as an input character) is estimated based on the database.

  Specifically, a vocabulary including an input character is selected from a plurality of vocabularies such as facility names and place names constituting the database, and the most vocabulary as the next character of the input character among the plurality of selected vocabularies is selected. A character candidate to be used is selected (step S410).

  For example, when the “to” character key is first touched, a vocabulary that includes the input character “to” among a plurality of vocabularies (for example, “Toyotashi”, “Toyota Eki”, “Toyota Yakusyo”, “Toyota” Shihokenjo ", ... etc.). Among the plurality of selected vocabularies, the character “yo” used by the most vocabulary as the character next to the input character “to” is selected as a character candidate.

  In step S420, the character key reaction area corresponding to the selected character candidate is enlarged as setting means. Specifically, a shape obtained by enlarging the basic region to a similar shape with a certain magnification (for example, 1.2 times) is calculated as the reaction region after the enlargement, and the calculated reaction region corresponds to a character candidate. This is reflected on the touch panel 10 as a character key reaction area.

  After that, when the character key “Y” is touched by the operator, YES is determined in step S400.

  Here, the character input next to the input character group corresponding to the plurality of character keys previously touched by the operator is estimated based on the database.

  In the present embodiment, a vocabulary including an input character group (“to” and “yo”) is selected from a plurality of vocabularies stored in a database, and the next character of the input character group is selected from the plurality of selected vocabularies. For example, “TA” is selected as a candidate for a character used in the most vocabulary (step S410). Thereafter, in step S420, the reaction area of the character key “TA” corresponding to the selected character candidate is expanded. Specifically, a shape obtained by enlarging the basic region to a similar shape with a constant magnification is calculated as the response region of the character key “ta”, and the touch panel 10 is set as the reaction region of the character key “ta”. To reflect.

  Next, if the operator touches the character key of the character “TA”, YES is determined in step S400.

  Here, the character input next to the input character group corresponding to the plurality of character keys previously touched by the operator is estimated based on the database.

  In this embodiment, a vocabulary including an input character group (“to”, “yo”, “ta”) is selected from a plurality of vocabularies stored in a database, and the next of the input character group among the selected vocabularies is selected. For example, “SHI” is selected as a candidate for a character used by the most vocabulary as a character (step S410). Thereafter, in step S420, the reaction area of the character key “shi” corresponding to the selected character candidate is expanded. Specifically, a shape obtained by enlarging the basic region to a similar shape at a certain magnification is calculated as the response region of the character key “shi”, and the touch panel 10 is used as the response region of the character key “shi”. To reflect.

  Thereafter, every time the operator touches the character key, the YES determination in step S400, the selection process in step S410, and the enlargement process in step S420 are repeated.

  According to the present embodiment described above, the memory 40 constitutes a database (dictionary) that stores vocabularies such as facility names and place names, and the CPU 60 determines that the touch determination means indicates that the operator has touched the display area. Is determined for each key (step S400: YES), based on a plurality of vocabularies stored in the database, a candidate of a character key estimated to be touched next by the operator is selected (step S410). The character key candidate reaction area is determined so as to expand the selected character key candidate reaction area (step S420).

  Therefore, since the response area of the character key candidate estimated to be touched next by the operator is expanded, the operability with respect to the character keys 10a to 10f can be improved. In addition to this, since the size of the display area is not changed, deterioration in appearance can be suppressed. Therefore, similarly to the first embodiment, it is possible to provide an input display device capable of improving the operability for a plurality of keys while suppressing deterioration in appearance.

(Other embodiments)
In the first embodiment described above, an example has been described in which the most frequently touched key among the character keys 10a... 10f is selected as one high-use frequency key. An example in which N (> 2) high-use frequency keys are selected as a number of touched keys among 10f may be described.

  For example, in addition to the “character key with the highest number of touches” among the character keys 10a... 10f, the “character key with the second highest number of touches”, the “character key with the third highest touches”,. ··· Select “Character key with the Nth most touches”. Then, the reaction area of the N frequently used keys selected in this way is expanded.

  In the first embodiment described above, an example has been described in which distribution calculation is not performed on sample data for each character key when it is determined that the operator who touched the character key is a passenger seated in the passenger seat. If the operator can be identified by inputting the character, etc., even if it is determined that the operator who touched the character key is an occupant seated in the passenger seat, the distribution calculation is performed on the sample data for each character key, A reaction area may be set for each character key in accordance with the distribution of the sample data.

  In the second embodiment described above, an example has been described in which one candidate character to be input next to the input character is selected based on the database, and the reaction area of the selected candidate character is enlarged. Instead of this, a plurality of candidate characters to be input next to the input character may be selected, and the reaction areas of the plurality of selected character candidates may be enlarged.

  For example, a vocabulary including an input character is selected from a plurality of vocabularies, and the selection is made other than “first character candidate used by most vocabularies” as a character next to the input character among the plurality of selected vocabularies. Among the plurality of vocabulary words “second character candidate used by the second most vocabulary character as the next character of the input character”, “third character used by the third most vocabulary character as the next character after the input character” “Candidate”,... “Nth character candidate used by the Nth most vocabulary as the next character after the input character” is selected. The reaction areas of the selected “first character candidates”... “Third character candidates” and “Nth character candidates” are expanded.

  In the above-described second embodiment, the example in which the basic area for each character key is rectangular has been described, but instead, the basic area for each character key may be set according to the position of the steering wheel or the like. .

  For example, in the case of the right handle, when the touch panel 10 is mounted on the upper side of the instrument panel 2, there is a tendency to touch many lower right directions of the keys. The image is enlarged from the predetermined rectangular shape in the lower right direction. In addition, when the touch panel 10 is mounted on the lower side of the instrument panel 2, there is a tendency to touch the upper right direction of the key many times, so that the basic area is changed from a predetermined rectangular shape to the upper right side by default in advance. It may be enlarged.

  In the second embodiment described above, an example has been described in which the response area of a character key estimated to be input next to a previously input character group is enlarged at a constant magnification. Instead, the first embodiment described above is used instead. Similar to the embodiment, the reaction area may be enlarged for each key according to the distribution function of the sample data. That is, the reaction area of the character key estimated to be input next may be expanded in a direction in which the sample data is unevenly distributed.

  In this case, since the response area of the character key candidate estimated to be touched next by the operator is expanded in the direction in which the touch position is unevenly distributed, the operability with respect to the character keys 10a. can do.

  In the first embodiment, the example in which the present invention is applied to the touch panel 10 of the vehicle input display device 1 has been described. However, instead of this, the present invention may be applied to a touch panel of an information terminal.

  In the first embodiment described above, the example in which the present invention is implemented using the touch panel 10 on which the correction key 13 is set has been described. Instead, the present invention is performed using the touch panel 10 on which the correction key 13 is not set. The invention may be implemented. In this case, every time the character key is touched and YES is determined in step S100, NO is determined in step S130.

  In the first embodiment, the example in which the reaction area for each character key key is enlarged based on the distribution of the touch position with respect to the character key has been described. However, when a key indicating an icon is displayed on the touch panel, this icon corresponds to this icon. The reaction area may be enlarged.

DESCRIPTION OF SYMBOLS 1 Input display apparatus for vehicles 2 Instrument panel 3 Steering 10 Touch panel 10a Character key 10b Character key 10c Character key 10f Character key 11 Search key 12 Kanji input key 13 Correction key 14 Display part 20a Proximity sensor 20b Proximity sensor 30a Proximity sensor 30b Proximity Sensor 40 Memory 50 Wireless circuit 51 Electronic key 60 CPU

Claims (8)

A touch panel (10) including a display area for displaying each of a plurality of keys and a reaction area for detecting, for each key, an operator touching the keys;
Based on detection of the reaction area for each key, position specifying means (S120) for specifying the touch position touched by the operator of the touch panel for each key;
Distribution calculation means (S180) for calculating the distribution of touch positions specified by the position specifying means for each key;
Based on the distribution of the touch positions calculated by the calculation means, calculation means for obtaining the reaction area for each key obtained by enlarging the reaction area for each key in a direction in which the touch positions are unevenly distributed (S200). When,
An input display device comprising: control means (S220) for reflecting the reaction area obtained for each key by the calculating means on the touch panel. An operator specifying means (S110) for specifying the operator;
The distribution calculating means calculates the distribution of the touch position for each key for each operator specified by the operator specifying means,
The input display device according to claim 1, wherein the control unit reflects the reaction area obtained for each key on the touch panel for each operator. Correctness determination means (S130) for determining whether or not the operator touches a key other than the key that should be touched by the operator;
Key determination means (S140) for determining whether or not the touch by the operator is a touch on a key adjacent to the key to be originally touched;
When the correctness determination means determines that the operator touches the key that should be touched, the touch position specified by the position specifying means is stored as a touch position for the key corresponding to the touch position. First registration means (S160);
The correctness determination means determines that the operator touches a key other than the key that should be originally touched, and the touch by the operator is a touch on a key adjacent to the key that should be touched originally. A second registration unit (S150) for storing the touch position specified by the position specifying unit as a touch position with respect to a key adjacent to the key to be originally touched when the key determining unit determines that there is a key;
The distribution calculating means (S180) calculates the touch position distribution for each key based on the touch positions for each key stored by the first and second registration means (S150, S160). The input display device according to claim 1, wherein: The touch panel is configured to input characters or symbols by touching the keys by the operator,
The touch panel includes the display area for displaying a correction key (13) for canceling the input of the character or symbol as the key,
The correctness determination means (S130)
When the correction key is touched by the operator after a character or symbol has been input by the operator's touch on the key, the correctness / incorrectness determination unit is configured to detect the key other than the key to be originally touched. To determine that the operator has touched,
When a character or symbol is input by the operator's previous touch on the key and a character or symbol is input by the operator's current touch on the key, the correctness determination unit is The input display device according to claim 3, wherein the touched key is determined as the key that should be touched originally, and it is determined that the operator touches the key that should be touched. A number determination means (S170) for determining whether or not the total number of touch positions for each key stored by the first and second registration means (S150, S160) is equal to or greater than a specified number;
When the number determination means determines that the total number of touch positions for each key stored by the first and second registration means is greater than or equal to a specified number, the distribution calculation means is specified by the position specification means. The input display device according to claim 4, wherein a distribution of touched positions is calculated for each key. Determination means (S320, S350) for determining whether or not the reaction regions obtained by the calculation means in two adjacent keys of the plurality of keys overlap each other;
When the determination means determines that the reaction areas obtained by the calculation means overlap with each other in the two adjacent keys, an intermediate line between the reaction areas of the two adjacent keys is calculated and calculated. 6. The input display device according to claim 1, wherein a reaction region of the two adjacent keys is distinguished using a middle line as a boundary. A touch panel (10) including a display area for displaying each of a plurality of keys and a reaction area for detecting, for each key, an operator touching the keys;
Storage means (40) for storing a plurality of vocabularies;
Touch determination means (S400) for determining for each key whether or not the operator has touched the key;
When the touch determination unit determines that the operator touches the display area for each key, it is estimated that the operator touches next based on a plurality of vocabularies stored in the storage unit. Candidate selection means (S410) for selecting key candidates
Setting means (S420) for enlarging the reaction area of the key candidate selected by the candidate selection means;
An input display device comprising: Position specifying means (S120) for specifying, for each key, a touch position touched by the operator of the touch panel;
Distribution calculation means (S180) for calculating the distribution of touch positions specified by the position specifying means for each key;
The said setting means (S420) is based on the distribution calculated by the said distribution calculation means, The response area | region of the said key candidate is expanded in the direction in which the said touch position is distributed unevenly, It is characterized by the above-mentioned. Input display device.

Images