JP2011100253A - Drawing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drawing device which is improved in the operability when a line segment is drawn while drawing an operation trajectory. <P>SOLUTION: The drawing device includes an operation input part 1 which detects an operation position; a drawing data creation part 2 which creates drawing data based on the operation position detected by the operation input part 1; and a display control part 8 which performs screen display based on the drawing data. The drawing data creation part 2 includes a trajectory drawing part 3 which generates drawing data showing a trajectory from the start of a drawing operation to the end thereof; a first end point determination part 4 which determines, when a second drawing operation is detected before a first drawing operation is ended, a first end point based on the operation position of the first drawing operation at the start of the second drawing operation; a second end point determination part 5 which determines a second end point based on the operation position of the second drawing operation at the end of the first drawing operation; and a segment line drawing part 6 which creates drawing data showing a segment line mutually connecting the first end point and the second end point. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a drawing apparatus, and more particularly to an improvement of a drawing apparatus that detects an operation position of a drawing operation and displays a locus of the drawing operation on a screen.

  A terminal device having a so-called handwriting input function has been conventionally known as a drawing function for detecting a trajectory of a finger or the like on a touch panel and displaying it on a screen. The touch panel is a sensor that detects an operation on a display screen as a detection surface, and outputs two-dimensional position information indicating the operation position when a finger is brought into contact with the display screen. In the handwriting input, based on the two-dimensional position information of the touch panel, a drawing operation trajectory from when the operation start is detected until the operation end is detected is displayed on the screen.

  If this handwriting input function is installed in a portable information terminal such as a cellular phone or PDA (Personal Digital Assistants), characters and figures drawn freehand can be acquired as drawing data. It can also be sent as an e-mail as a handwritten memo. In particular, in the case of a portable information terminal such as a mobile phone, it is possible to transmit the drawing data by e-mail by handwriting the detailed map near the meeting place and the route to the destination, and transmitting it to the e-mail transmission partner by text information. Difficult information can be easily communicated. Here, when inputting a route or a figure to the destination by handwriting, it is not easy to draw a straight line accurately by freehand, it is desirable that a desired straight line can be easily input.

  However, in a drawing apparatus having a conventional handwriting input function, when drawing a predetermined straight line while drawing freehand, the operation input is temporarily ended by releasing the finger from the screen, and then the predetermined operation is performed. Therefore, it was necessary to switch to the straight line drawing mode, and the operability was not good. Moreover, if it is attempted to resume the drawing of the operation locus by the freehand after drawing the straight line, it is necessary to switch to the locus drawing mode by performing a predetermined operation again.

  Here, Patent Document 1 proposes a technique for drawing a straight line connecting two points by simultaneously touching two positions on the touch panel. However, this patent document 1 relates to a straight line drawing method in the straight line drawing mode, and does not improve the operability when drawing a line segment connecting two points during drawing of an operation locus by a freehand.

Japanese Patent Laid-Open No. 8-211992

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a drawing apparatus with improved operability when drawing a line segment while drawing an operation locus. In particular, an object of the present invention is to provide a drawing apparatus that can easily draw a line segment connecting two end points when the operation position of the drawing operation is detected and the locus of the drawing operation is displayed on the screen.

  A drawing apparatus according to a first aspect of the present invention performs an operation position detection means for detecting an operation position, a drawing data generation means for generating drawing data based on the operation position, and a screen display based on the drawing data. Display means, wherein the drawing data generation means detects the drawing data indicating the drawing data from the start to the end of the drawing operation, and the second drawing operation is detected before the end of the first drawing operation. In this case, the first end point determining means for determining the first end point based on the operation position of the first drawing operation at the start of the second drawing operation, and the first end point at the end of the first drawing operation. 2nd end point determination means for determining the second end point based on the operation position of the second drawing operation, and line segment drawing means for generating drawing data indicating a line segment connecting the first end point and the second end point. Composed.

  In this drawing apparatus, if the second drawing operation is detected before the end of the first drawing operation, the first end point is determined based on the operation position of the first drawing operation at the start of the second drawing operation. Is determined. Then, the second end point is determined based on the operation position of the second drawing operation at the end of the first drawing operation, and a line segment connecting these end points is drawn. According to such a configuration, if the second drawing operation is started during the drawing of the trajectory by the first drawing operation, one end point of the line segment to be drawn is determined. It is possible to switch to a line segment drawing mode without ending the operation. In addition, by terminating the first drawing operation before the second drawing operation, the other end point of the line segment to be drawn is determined and the line segment connecting the end points is drawn. When the operation position is detected and the operation locus is drawn, the line segment connecting the two end points can be easily drawn. The present invention can be switched to the line segment drawing mode without ending the first drawing operation, and is particularly useful when the drawing operation is performed with the finger of one hand.

  A drawing apparatus according to a second aspect of the present invention displays an operation position detecting means for detecting an operation position, a drawing data generating means for generating drawing data based on the operation position, and a screen display based on the drawing data. Display means, wherein the drawing data generation means detects the drawing data indicating the drawing data from the start to the end of the drawing operation, and the second drawing operation is detected before the end of the first drawing operation. A first end point determining means for determining a first end point based on a trajectory of the first drawing operation before the second drawing operation, and a second drawing at the end of the first drawing operation. A second end point determining unit that determines a second end point based on an operation position of the operation, and a line segment drawing unit that generates drawing data indicating a line segment connecting the first end point and the second end point .

  In this drawing apparatus, if the second drawing operation is detected before the end of the first drawing operation, the first end point is determined based on the trajectory of the first drawing operation before the second drawing operation. The Then, the second end point is determined based on the operation position of the second drawing operation at the end of the first drawing operation, and a line segment connecting these end points is drawn. According to such a configuration, if the second drawing operation is started during the drawing of the trajectory by the first drawing operation, one end point of the line segment to be drawn is determined. It is possible to switch to a line segment drawing mode without ending the operation. In addition, by terminating the first drawing operation before the second drawing operation, the other end point of the line segment to be drawn is determined and the line segment connecting the end points is drawn. When the operation position is detected and the operation locus is drawn, the line segment connecting the two end points can be easily drawn.

  In addition to the above-described configuration, the drawing device according to the third aspect of the present invention is configured to operate the first drawing operation when the first end point determination unit determines that the movement of the finger is stopped for a certain period of time during the first drawing operation. A first end point is configured to be determined based on the position. When the drawing operation is performed with a finger, if the operation position of the first drawing operation at the start of the second drawing operation is determined as the first end point, the user's intention at the start of the second drawing operation is determined. On the other hand, it may be considered that the finger rolls and a beard-like locus is drawn near the first end point. Therefore, by adopting the above configuration, if the user stops the movement of the finger for a certain period of time and then starts the second drawing operation, the first drawing operation is associated with the second drawing operation. Even if the finger rolls, it is possible to prevent the beard-like locus from being drawn near the first end point against the user's will.

  In the drawing apparatus according to a fourth aspect of the present invention, in addition to the above-described configuration, the locus drawing unit starts the operation position of the second drawing operation at the end of the first drawing operation as a starting point. It is configured to generate drawing data indicating a trajectory up to the end. According to such a configuration, since the operation locus is drawn starting from the operation position of the second drawing operation at the end of the first drawing operation, after the line segment connecting the first end point and the second end point is drawn The drawing of the operation locus can be resumed without ending the second drawing operation.

  In addition to the above-described configuration, the drawing apparatus according to the fifth aspect of the invention is configured such that the line segment drawing means generates drawing data indicating a straight line connecting the first end point and the second end point. According to such a configuration, a straight line connecting the first end point and the second end point is drawn by ending the first drawing operation before the second drawing operation. The operability when drawing a straight line can be improved. In particular, if the third drawing operation is started without ending the second drawing operation after the first drawing operation is finished, a straight line can be drawn repeatedly, so that a polygonal line or polygon can be drawn easily. Can be made.

  In the drawing apparatus according to a sixth aspect of the present invention, in addition to the above-described configuration, the line segment drawing unit is configured to change the line segment line based on the tapping number of the second drawing operation at the start of the second drawing operation. Configured to change seeds. According to such a configuration, the line type of the line segment can be made different according to the number of tappings of the second drawing operation at the start of the second drawing operation. Operability can be improved.

  In the drawing apparatus according to the seventh aspect of the invention, in addition to the above configuration, the line segment drawing means changes the line type of the line segment based on a third drawing operation before the determination of the second end point. Composed. According to such a configuration, since the line type of the line segment is changed based on the third drawing operation before determining the second end point, the line type can be easily changed until the second end point is determined. can do.

  In the drawing device according to the eighth aspect of the present invention, in addition to the above configuration, the display means displays an editing icon based on the determination of the first end point, and the line segment drawing means operates the editing icon. Is configured to change the line type of the line segment. According to such a configuration, since the editing icon is displayed after the first end point is determined, the editing icon can be easily operated.

  In the drawing device according to the ninth aspect of the present invention, in addition to the above-described configuration, the display means displays an editing icon for changing the line type of the line segment based on the determination of the second end point in the vicinity of the line segment. Configured to display. According to such a configuration, since the editing icon is displayed near the line segment when the second end point is determined, the editing icon can be easily operated.

  According to the drawing apparatus of the present invention, if the second drawing operation is started during drawing of the trajectory, one end point of the line segment to be drawn is determined, so that the first drawing operation is ended. You can switch to line segment drawing mode. In addition, by terminating the first drawing operation before the second drawing operation, the other end point of the line segment to be drawn is determined and the line segment connecting the end points is drawn. When the operation position is detected and the operation locus is drawn, the line segment connecting the two end points can be easily drawn. Further, since the operation locus is drawn starting from the operation position of the second drawing operation at the end of the first drawing operation, the second drawing operation is performed after the line segment connecting the first end point and the second end point is drawn. The drawing of the operation trajectory can be resumed without ending. Therefore, it is possible to realize a drawing apparatus with improved operability when drawing a line segment while drawing an operation locus.

1 is a diagram illustrating an example of a schematic configuration of a drawing apparatus according to Embodiment 1 of the present invention, in which a slide-type mobile phone 100 is illustrated as an example of a drawing apparatus. It is the perspective view which showed the structural example of the mobile telephone 100 of FIG. 1, and the different terminal state is shown. It is the figure which showed an example of the operation | movement at the time of the handwriting input in the mobile telephone 100 of FIG. 1 compared with the prior art example. It is explanatory drawing which showed typically the operation example at the time of the handwriting input in the mobile telephone 100 of FIG. 1, and the case where a down event is generated with the 2nd finger during drawing of an operation locus is shown. It is explanatory drawing which showed typically the operation example at the time of the handwriting input in the mobile telephone 100 of FIG. 1, and the case where the up event is generated with the 1st finger | toe and the drawing of a locus | trajectory is restarted is shown. It is explanatory drawing which showed typically the operation example at the time of the handwritten input in the mobile telephone 100 of FIG. 1, and the case where a down event is again generated with a 1st finger | toe and a straight line is drawn is shown. It is explanatory drawing which showed typically the operation example at the time of the handwriting input in the mobile telephone 100 of FIG. 1, and the blurring of the operation position at the time of a down event generate | occur | produced is shown. FIG. 2 is a block diagram illustrating a configuration example of a main part of the mobile phone 100 in FIG. 1, illustrating an example of a functional configuration inside the mobile phone 100. 3 is a flowchart showing an example of an operation at the time of handwriting input in the mobile phone 100 of FIG. 3 is a flowchart showing an example of an operation at the time of handwriting input in the mobile phone 100 of FIG. FIG. 5 is a block diagram showing a configuration example of a main part of a drawing apparatus according to Embodiment 2 of the present invention, and shows another example of a functional configuration inside the mobile phone 100. It is the figure which showed the operation example at the time of the handwriting input in the drawing apparatus by Embodiment 3 of this invention, and shows an example of the edit icon 32 displayed near the straight line B2. It is the figure which showed the operation example at the time of the handwriting input in the drawing apparatus of FIG. 11, and the other example of the line segment which connects a 1st endpoint and a 2nd endpoint is shown. It is the figure which showed the operation example at the time of the handwriting input in the drawing apparatus of FIG. 11, and the other example of the line type which can be changed is shown.

Embodiment 1 FIG.
FIGS. 1A and 1B are diagrams showing an example of a schematic configuration of a drawing apparatus according to Embodiment 1 of the present invention, and a sliding mobile phone 100 is shown as an example of the drawing apparatus. FIG. 1A shows a state in which the mobile phone 100 is viewed from the front, and FIG. 1B shows a state in which the mobile phone 100 is viewed from the side.

  The cellular phone 100 is a portable information terminal including a thin display casing 10 and an operation casing 20 that are long in the vertical direction, and a connecting mechanism (not shown) that slidably connects these casings. An open state in which a part of the body overlaps and a closed state in which both the housings are overlapped can be transited.

  A display panel 11 is provided on the front surface of the display housing 10, and a key panel 21 is provided on the front surface of the operation housing 20. The display panel 11 is a touch operation detection surface provided on a display screen for displaying information. By touching the display panel 11 with a finger, menu items and icons can be selected, the mouse cursor and focus can be moved, the screen can be scrolled, or characters and figures can be input by handwriting.

  The key panel 21 is provided with a plurality of operation keys such as direction keys 22 and numeric keys 23. The direction key 22 is a multi-function key capable of performing different operation inputs according to four pressing parts on the upper, lower, left and right sides, and can input the upper, lower, left and right directions by the pressing operation.

  The display housing 10 and the operation housing 20 both have a rectangular parallelepiped shape, and are connected with their main surfaces facing each other. That is, the main surface of the display housing 10 opposite to the display panel 11 and the main surface of the operation housing 20 on the key panel 21 side are opposed to each other.

  In the above-described coupling mechanism, the main surface of the display housing 10 opposite to the display panel 11 and the main surface of the operation housing 20 on the key panel 21 side face each other, and the display housing 10 and the operation housing 20. Is moved relatively in one direction. Here, both housings are slidable in the longitudinal direction, that is, in the vertical direction.

  FIGS. 2A and 2B are perspective views showing a configuration example of the mobile phone 100 of FIG. 1, and different terminal states are shown. FIG. 2A shows an open state of both housings, and FIG. 2B shows a closed state.

  In this cellular phone 100, there are an open state in which the key panel 21 is exposed, and a closed state in which the display housing 10 is slid toward the operation housing 20 and the key panel 21 is housed on the back side of the operation housing 20. For example, handwriting input is performed in a closed state.

<Operation mode for handwriting input>
3 (a) and 3 (b) are diagrams showing an example of an operation at the time of handwriting input in the mobile phone 100 of FIG. 1 in comparison with a conventional example, and FIG. An example of the operation of the telephone 100 is shown, and FIG. 3B shows the operation of a conventional drawing apparatus.

  In handwriting input, a trajectory such as a finger on the display panel 11 is detected, and a trajectory drawing mode A1 for acquiring characters and figures drawn by freehand as drawing data and displaying them on the screen, and a straight line drawing mode A2 for drawing a straight line Are provided as operation modes.

  In the conventional drawing apparatus, switching between the locus drawing mode A1 and the line drawing mode A2 has been performed by operating a predetermined mode switching operation, for example, a mode switching icon. For this reason, if an attempt is made to draw a straight line while drawing an operation locus with freehand, the mode switching operation must be performed after the operation input is ended by releasing the finger from the display panel 11. The operability was not good.

  In addition, when attempting to resume the drawing of the operation locus by freehand after drawing a straight line, the mode switching operation has to be performed again. Furthermore, since switching between the trajectory drawing mode A1 and the straight line drawing mode A2 involves a mode switching operation irrelevant to the position of the straight line, it is difficult to cleanly connect the operation trajectory and a desired straight line.

  On the other hand, the mobile phone 100 according to the present invention automatically transitions from the trajectory drawing mode A1 to the straight line drawing mode A2 if the second drawing operation is detected during the drawing of the operation trajectory by the first drawing operation. To do. Then, one end point of the straight line to be drawn is determined based on the operation position of the first drawing operation at the start of the second drawing operation. By setting the one end point as the end point of the trajectory by the first finger, the trajectory and the straight line can be connected without separating the end point of the trajectory from the end point of the straight line.

  On the other hand, if the first drawing operation is ended before the end of the second drawing operation, the line drawing mode A2 can be returned to the locus drawing mode A1. The other end point of the straight line to be drawn is determined based on the operation position of the second drawing operation at the end of the first drawing operation. Then, starting from the operation position of the second drawing operation at the end of the first drawing operation, the drawing of the locus until the end of the second drawing operation is resumed.

  If the second drawing operation is terminated before the end of the first drawing operation, the straight line drawing mode A2 is canceled, and the operation position of the first drawing operation at the end of the second drawing operation is set. The drawing of the trajectory is resumed as the starting point.

  In this cellular phone 100, a drawing operation is started by bringing a finger into contact with the display panel 11, and the locus of the finger when the finger is slid on the display panel 11 by detecting the position of the finger at regular intervals. Is detected as an operation locus. Then, the drawing operation is ended by moving the finger away from the display panel 11. Here, the operation of bringing the finger into contact with the display panel 11 is referred to as a down event, and the operation of moving the finger away from the display panel 11 is referred to as an up event. When an event is detected, the mode is switched to the straight line drawing mode A2.

<Switching drawing mode>
4 to 6 are explanatory diagrams schematically illustrating an operation example at the time of handwriting input in the mobile phone 100 of FIG. 1, and show an operation procedure when switching the drawing mode. FIGS. 4A and 4B show an operation procedure when a down event is generated by the second finger while the operation locus B1 is drawn by the first finger. FIG. 4A shows a state where the operation trajectory B1 is being drawn, and FIG. 4B shows a state when a down event of the second finger occurs.

  The operation locus B1 is a path from the start point to the end point of such a drawing operation when the finger is slid on the display panel 11 while touching the display panel 11. In this example, a circular arc is drawn as the operation locus B1 by moving the first finger, for example, the thumb of the right hand while making contact with the display panel 11.

  If a down event by the second finger is detected during the drawing of the operation locus B1 by the first finger, the line drawing mode A2 is switched. That is, when a down event is detected by the second finger, for example, the index finger of the right hand, while the operation locus B1 is drawn by the first finger, the operation mode is switched from the locus drawing mode A1 to the line drawing mode A2. Here, the detection of a down event means that the start of a drawing operation is detected by bringing a finger close to the display panel 11.

  At the time of switching to the straight line drawing mode A2, one end point of the straight line to be drawn is determined based on the operation position of the first finger when the down event of the second finger occurs.

  FIGS. 5A and 5B show an operation procedure when an up event is generated by the first finger and drawing of the operation locus is resumed. FIG. 5A shows a state when the up event of the first finger occurs, and FIG. 5B shows a state where the drawing of the operation locus B3 by the second finger is resumed after the straight line B2 is drawn. It is shown.

  One end point B21 of the straight line B2 to be drawn is determined from the position of the first finger on the display panel 11 when a down event is generated by the second finger. On the other hand, the other end point B22 of the straight line B2 is determined based on the operation position of the second finger when the up event is generated by the first finger. Here, the up event is a transition from a drawing operation detection state to a non-detection state by moving a finger away from the display panel 11.

  A straight line B2 connecting the end points B21 and B22 is displayed when an up event of the first finger is detected, and an operation locus B3 by the second finger is started from the operation position of the second finger when the up event of the first finger occurs. Drawing is resumed.

  In the mobile phone 100 according to the present invention, if a down event is generated by the second finger while the operation locus B1 is drawn by the first finger, the operation mode is automatically switched from the locus drawing mode A1 to the straight line drawing mode A2. Further, it is possible to improve the operability when the straight line B2 is drawn during the drawing of the operation locus B1. In addition, if the up event by the first finger is generated before the up event by the second finger, it is possible to return from the straight line drawing mode A2 to the trajectory drawing mode A1, so that a freehand operation is performed after drawing the straight line B2. The operability when resuming the drawing of the trajectory B3 can also be improved.

  Furthermore, one end point B21 of the straight line B2 is determined based on the operation position of the first finger when the second finger down event occurs, and the other end point B22 is the first end point when the first finger up event occurs. Since the drawing of the operation locus B3 is resumed starting from the operation position of the second finger when the up event of the first finger occurs, the operation locus B1 and B3 and the straight line B2 are It can be connected beautifully.

  If a down event is generated by the third finger without generating an up event of the second finger after the up event of the first finger, a straight line can be continuously drawn. In this case, the first finger and the third finger may be the same finger. By alternately touching the first finger and the second finger, a broken line or a polygon can be easily drawn.

  FIGS. 6A and 6B show an operation procedure in a case where a straight line is continuously drawn by generating a down event again with the first finger after the up event of the first finger. . FIG. 6A shows a state when a down event occurs again by the first finger, and FIG. 6B shows a state when an up event of the second finger occurs.

  If the first finger is touched down again without touching up the second finger after touching up the first finger, the straight line B4 can be drawn with the end point B22 of the straight line B2 as one end point. Therefore, by repeating alternately touching down the other finger before touching up one finger and touching up the other finger before touching up the other finger, the straight lines B2 and B4 are at their end points. It is possible to easily draw a figure such as a connected broken line without separating them.

<Operation position blur when a down event occurs>
FIGS. 7A and 7B are explanatory views schematically showing an operation example at the time of handwriting input in the mobile phone 100 of FIG. 1, and the operation position of the first finger when the second finger down event occurs. This shows how blurring occurs. FIG. 7A shows a contact portion when the operation locus is drawn by the first finger, and FIG. 7B shows that the second finger is down while the operation locus is drawn by the first finger. The contact portion when the event is generated is shown.

  When a down event is generated by the second finger while the operation locus is drawn by the first finger, a rotational motion around the first finger is generated in order to bring the second finger closer to the display panel 11. For this reason, since the contact part with the display panel 11 of a 1st finger moves to the 2nd finger side, the shift | offset | difference only (DELTA) x will arise in the gravity center position of the said contact part.

  When an up event is generated by one of the fingers after the occurrence of the down event of the first finger and the second finger, as in the case of the down event, the position of the center of gravity of the contact portion is determined by the movement of the contact portion accompanying the rotational movement. Will be displaced. The operation position of the finger is determined based on, for example, the position of the center of gravity of such a contact portion. Therefore, the operation position of a certain finger is blurred due to a down event or an up event of another finger.

  In this mobile phone 100, the end point of the straight line is determined so that the end point of the straight line is not separated from the end point of the operation trajectory and a beard-like trajectory does not occur in the vicinity of the end point of the straight line due to such movement of the operation position. Is done. That is, one end point of the straight line is determined in the vicinity of the operation position based on the operation position of the first finger when the second finger down event occurs. The other end point is determined in the vicinity of the operation position based on the operation position of the second finger when the up event of the first finger occurs.

  FIG. 8 is a block diagram illustrating a configuration example of a main part of the mobile phone 100 in FIG. 1, and illustrates an example of a functional configuration inside the mobile phone 100. The cellular phone 100 includes an operation input unit 1, a drawing data generation unit 2, a drawing data storage unit 7, a display control unit 8, and a display unit 9.

  The operation input unit 1 is an operation position detection unit that detects an operation position and outputs the detection result to the drawing data generation unit 2. Here, a touch panel having the display panel 11 as a detection surface is used as the operation input unit 1. The touch panel is a capacitance type sensor that detects the operation position of a finger or the like on the detection surface, and detects a drawing operation using the phenomenon that the capacitance changes when the finger is brought close to the detection surface. ing.

  The drawing operation is detected based on the capacitance at a plurality of detection points in the detection surface. For example, the capacitance at each detection point is detected at regular intervals, and the detected capacitance value is compared with a predetermined threshold Th1. Then, the number of detection points whose electrostatic capacity exceeds the threshold Th1 is counted, and when the number of corresponding detection points exceeds a predetermined threshold Th2, it is determined that the drawing operation has started. On the other hand, when the number of detected points where the capacitance exceeds the threshold Th1 falls below a predetermined threshold Th3, it is determined that the drawing operation has been completed.

  Further, when the drawing operation is detected, the operation position of the drawing operation is determined by determining that an area including detection points whose capacitance exceeds the threshold Th1 is a contact portion between the finger and the detection surface. The center-of-gravity position of the region is calculated and determined based on the calculation result.

  The drawing data generation unit 2 includes a locus drawing unit 3, a first end point determination unit 4, a second end point determination unit 5, and a line segment drawing unit 6, and based on position information from the operation input unit 1, an operation locus or line The drawing data for drawing the minute is generated and the operation of writing in the drawing data storage unit 7 is performed.

  In the locus drawing mode, the locus drawing unit 3 generates drawing data indicating the locus from the start to the end of the drawing operation, and updates the drawing data in the drawing data storage unit 7. The trajectory is an operation trajectory from the operation position at the start of the drawing operation to the operation position at the end of the drawing operation.

  When the second drawing operation is detected before the end of the first drawing operation, the first end point determination unit 4 is based on the operation position of the first drawing operation at the start of the second drawing operation. The first end point is determined. Specifically, if a down event by the second finger is detected before the up event by the first finger, the operation mode is switched to the line drawing mode. Then, one end point (first end point) of the line segment to be drawn is determined based on the operation position of the first finger when the down event is generated by the second finger.

  The second endpoint determination unit 5 determines the second endpoint based on the operation position of the second drawing operation at the end of the first drawing operation. Specifically, after the first end point is determined, the other end point (second end point) of the line segment to be drawn is determined based on the operation position of the second finger when the up event occurs with the first finger, Cancel the line drawing mode. Here, even if the down event by the third finger is detected before the up event of either the first finger or the second finger, the operation by the third finger is ignored.

  The line segment drawing unit 6 generates drawing data indicating a line segment connecting the first end point and the second end point determined by the operation of the first finger and the second finger in the line segment drawing mode, and the drawing data storage unit The drawing data in 7 is updated. The drawing data storage unit 7 holds locus drawing data and line segment drawing data as drawing data.

  The display control unit 8 controls the display unit 9 based on the drawing data held in the drawing data storage unit 7, and displays operation trajectories and line segments on the display screen of the display panel 11. For example, an LCD (Liquid Crystal Display) 9 is used as the display unit 9.

  In the locus drawing unit 3, in order to automatically resume the drawing of the operation locus, the locus until the occurrence of the up event by the second finger is started from the operation position of the second finger when the up event is caused by the first finger. Drawing data indicating is generated. In the locus drawing unit 3, if an up event by the second finger occurs before an up event by the first finger, the line segment drawing mode is canceled, and the operation position of the first finger when the up event by the second finger occurs The drawing data indicating the locus until the up event occurs by the first finger is generated.

  Here, it is assumed that drawing data indicating a straight line connecting the start point and the end point is generated as the line drawing data with the first end point as the start point and the second end point as the end point. As such drawing data, for example, vector information including straight line direction information and length information is generated.

  Steps S101 to S118 in FIG. 9 and FIG. 10 are flowcharts showing an example of an operation at the time of handwriting input in the mobile phone 100 in FIG. First, when the handwriting input function is selected by a predetermined operation by the user, the drawing data generation unit 2 switches the operation mode to the locus drawing mode and monitors the input signal from the operation input unit 1 (steps S101 and S102). ).

  Next, if the first drawing operation is detected by the operation input unit 1 (step S103), the locus drawing unit 3 acquires the position coordinates of the drawing operation from the operation input 1, and obtains the locus drawing data indicating the operation locus. Generate and update the drawing data in the drawing data storage unit 7 (steps S104 and S105).

  The processing procedure of steps S104 and S105 is repeated until the second drawing operation is detected or the end of the first drawing operation is detected (steps S106 and S107). The processing procedure from step S103 to step S107 is repeated until the handwriting input function is terminated. When the handwriting input function is terminated, the trajectory drawing mode is canceled and the processing is terminated (step S108).

  If the second drawing operation is detected before the end of the first drawing operation, the first end point determination unit 4 switches the operation mode to the straight line drawing mode (steps S106 and S109). Then, based on the operation position of the first drawing operation at the start of the second drawing operation, the starting point (first end point) of the straight line to be drawn is determined (step S110).

  Next, if the end of the first drawing operation is detected before the end of the second drawing operation, the second end point determination unit 5 performs the second drawing based on the position information from the operation input unit 1. The position coordinates of the operation are acquired, and the end point (second end point) of the straight line is determined based on the operation position of the second drawing operation at the end of the first drawing operation (steps S111 to S113).

  The line segment drawing unit 6 generates line drawing data indicating a straight line connecting the start point and the end point determined by the operation of the first finger and the second finger, and updates the drawing data in the drawing data storage unit 7 (step S1). S114, S115). Then, the straight line drawing mode is canceled, and the processing procedure after step S104 is repeated (step S116). At this time, locus drawing data is generated starting from the operation position of the second drawing operation at the end of the first drawing operation.

  On the other hand, when the end of the second drawing operation is detected before the end of the first drawing operation, the straight line drawing mode is canceled and the processing procedure after step S104 is repeated (steps S111, S117, S118). At this time, locus drawing data is generated starting from the operation position of the first drawing operation at the end of the second drawing operation.

  According to the present embodiment, since the start point of the straight line to be drawn is determined by starting the second drawing operation during the drawing of the operation locus, the straight line drawing mode is set without releasing the finger from the detection surface. Can be switched. Also, by terminating the first drawing operation before the end of the second drawing operation, the end point of the straight line to be drawn is determined, and a straight line connecting the end points is drawn. When a position is detected and an operation locus is drawn, a straight line connecting two end points can be easily drawn.

Embodiment 2. FIG.
In the first embodiment, an example has been described in which one end point of a line segment to be drawn is determined based on the operation position of the first drawing operation at the start of the second drawing operation. On the other hand, in the present embodiment, when the second drawing operation is detected before the end of the first drawing operation, based on the trajectory by the first drawing operation before the second drawing operation, A case where one end point is determined will be described.

  FIG. 11 is a block diagram showing a configuration example of a main part of the drawing apparatus according to the second embodiment of the present invention, and shows another example of the functional configuration inside the mobile phone 100. Compared with the mobile phone 100 of FIG. 8, in the mobile phone 100, the drawing data generation unit 2 includes an operation locus storage unit 31, and the first end point determination unit 4 includes a timer 4a, a stop determination unit 4b, and an end point calculation unit 4c. It differs in that it consists of. The operation locus storage unit 31 holds operation locus drawing data generated by the locus drawing unit 3.

  The first end point determination unit 4 includes a timer 4a, a stop determination unit 4b, and an end point calculation unit 4c. When a down event is detected by the second finger before the up event is generated by the first finger, the operation locus storage unit 31 is detected. The drawing data is read out from, and the first end point is determined based on the locus by the first finger before the occurrence of the down event by the second finger.

  Based on the position information from the operation input unit 1 and the time information from the timer 4a, the stop determination unit 4b determines whether the finger movement has stopped for a certain period during the drawing operation by the first finger, The determination result is output to the endpoint calculation unit 4c. When the second finger down event is detected before the first finger up event, the end point calculation unit 4c reads the drawing data from the operation locus storage unit 31, and the finger is moved during the drawing operation by the first finger. The first end point is determined based on the operation position of the first finger when the stop determination unit 4b determines that the vehicle has stopped for a certain period of time.

  According to the present embodiment, if the user stops the movement of the first finger for a certain period of time and then generates a down event with the second finger, the first finger rolls along with the down event of the second finger. Even in this case, it is possible to reliably prevent the beard-like locus from being drawn near the first end point against the user's will.

Embodiment 3 FIG.
In the first embodiment, an example has been described in which the operation mode is switched from the locus drawing mode to the line segment drawing mode by performing the second drawing operation during the drawing of the operation locus by the first drawing operation. On the other hand, in this embodiment, a case will be described in which an editing icon for changing the line type of a line segment is displayed in the vicinity of the line segment.

  FIG. 12 is a diagram showing an operation example at the time of handwriting input in the drawing apparatus according to the third embodiment of the present invention, and the editing icon 32 displayed near the straight line B2 immediately after the end point of the straight line B2 is determined. An example is shown.

  In the straight line drawing mode, the end point B22 of the straight line B2 is determined based on the operation position of the second finger when the up event of the first finger occurs. At this time, an editing icon 32 for changing the line type is displayed on the display panel 11 adjacent to the straight line B2.

  Specifically, in the straight line drawing mode, if an up event by the first finger is detected before the up event of the second finger, it is adjacent to the straight line for a predetermined period after the up event of the first finger is detected. Then, an editing icon 32 is displayed. For example, the editing icon 32 is displayed for a predetermined time after the first finger up event is detected. Alternatively, the edit icon 32 is displayed after the first finger up event occurs until the operation position of the second finger is a predetermined distance or more away from the position at the time of the first finger up event occurrence.

  By operating such an editing icon 32 with an empty finger, for example, the thumb of the right hand, the line type of the line segment can be changed. Specifically, instead of the straight line B2, an arc, a wavy line, a broken line, or the like can be selected as a line segment connecting the first end point and the second end point determined by the operation of the first finger and the second finger. . Alternatively, the thickness of the straight line B2 can be changed.

  FIGS. 13A to 13C are diagrams illustrating an operation example at the time of handwriting input in the drawing apparatus of FIG. 12, and other examples of line segments connecting the first end point and the second end point are illustrated. . FIG. 13A shows a case where an arc is drawn as a line segment, FIG. 13B shows a case where a wavy line is drawn, and FIG. 13C shows a broken line. The case to be shown is shown.

  The arc is a part of a circle starting from the first end point and ending at the second end point. The wavy line is a continuous curve connecting these end points, and the broken line is an intermittent straight line. According to the present embodiment, the editing icon 32 is displayed in the vicinity of the straight line B2 based on the determination of the second end point, so that the editing can be performed with the finger freed by generating an up event with the first finger. The icon 32 can be easily operated.

  FIGS. 14A to 14C are diagrams illustrating an operation example at the time of handwriting input in the drawing apparatus of FIG. 12, and other examples of line types that can be changed are illustrated. FIG. 14 (a) shows a case where the line segment connecting the first end point and the second end point is drawn as a thin line, and FIG. 14 (b) shows a case where the line is drawn as a thick line. FIG. 14C shows a case where drawing is performed with a line with decoration.

  The line with decoration is a line segment to which decoration or a pattern is added, and can be used, for example, as a figure showing a track on a map. As the line segment connecting the first end point and the second end point, lines having different line thicknesses and decorations can be selected.

  In the present embodiment, the example in which the editing icon 32 for changing the line type of the line segment is displayed in the vicinity of the line segment has been described. However, the line type of the line segment to be drawn is changed. As a means, another structure may be used. For example, the line drawing unit 6 changes the line type of the line to be drawn based on the number of tappings of the second drawing operation at the start of the second drawing operation during drawing of the operation locus. It may be a simple configuration. Specifically, depending on whether the down event by the second finger was performed by one tapping, i.e., single tapping, or by two tappings within a fixed time, i.e., by double tapping, It may be possible to change the line type of the line segment.

  According to this configuration, the line type of the line segment can be changed according to the number of tappings of the second finger when the second finger down event occurs, so that the operability when changing the line type of the line segment is improved. Can be improved.

  Alternatively, the line segment drawing unit 6 may change the line type of the line segment based on the third drawing operation before determining the second end point. Specifically, the display control unit 8 displays an editing icon based on the determination of the first end point, and the line segment drawing unit 6 tries to draw based on the operation of the editing icon with the third finger. Change the line type.

  According to such a configuration, since the line type of the line segment is changed based on the operation of the third finger before the second end point is determined, a free finger is used until the second end point is determined. The line type can be easily changed.

  In the first to third embodiments, the example in which the operation mode is switched to the line segment drawing mode when the down event by the second finger is detected during the drawing of the operation locus by the first finger has been described. The present invention is not limited to this. For example, when two or more fingers are detected within a predetermined time as a second finger down event, the second endpoint determination unit 5 determines the last remaining finger operation position among these fingers, The second end point may be determined.

  In the first to third embodiments, an example in which an operation trajectory or a line segment is drawn at the time of handwriting input has been described. However, this mode is also used in an erasing mode for erasing a part of characters or figures drawn by handwriting input. The invention can be applied. For example, in the erase mode, the operation locus of the finger is drawn with a transparent color that transmits the background.

  By drawing such an operation trajectory using a transparent color, it is possible to erase characters and figures drawn on a predetermined background by handwriting input using an operation trajectory drawn freehand. At this time, if a down event of the second finger is detected before the up event of the first finger, the operation mode is switched from the locus drawing mode using the transparent color to the straight line drawing mode using the transparent color. Then, the line drawing unit 6 generates line drawing data for drawing a straight line connecting the first end point and the second end point determined by the operation of the first finger and the second finger with a transparent color.

  With this configuration, since a straight line connecting the first end point and the second end point is drawn with a transparent color that transmits the background, when characters and figures drawn on the background are erased by the operation locus, The straight line can be drawn easily. In addition, by drawing a straight line in such a transparent color, unnecessary portions of characters and figures can be removed and the ends of the characters and figures can be aligned.

  In the first to third embodiments, an example has been described in which a line segment connecting the first end point and the second end point is drawn when the first finger up event occurs, but the line segment is determined before the second end point is determined. May be drawn. For example, it is conceivable to draw a line segment connecting the first end point and the operation position of the second finger when the second finger down event occurs.

  Moreover, although Embodiment 1-3 demonstrated the example in case the display panel 11 which displays the character and figure input by handwriting is a detection surface of drawing operation, the detection surface of drawing operation and the display of drawing information were demonstrated. The present invention can also be applied to a device arranged at a position different from the screen. For example, a display screen on which handwritten characters and figures are displayed is provided on the display housing 10 as the display panel 11, and the detection surface of the operation input unit 1 is provided on the operation housing 20. May be.

  In Embodiments 1 to 3, an example in which a down event and an up event with a finger are detected has been described. However, the present invention also applies to a case where a drawing operation is performed using an input auxiliary tool such as a touch pen. be able to. For example, when two touch pens are used and the down event of the other touch pen is detected before the up event of one touch pen, the operation mode is switched from the locus drawing mode to the line drawing mode. Also good. That is, the present invention can be applied to an apparatus that draws an operation locus by detecting a down event and an up event by an operator such as a finger or a touch pen.

  Moreover, although Embodiment 1-3 demonstrated the example in case the operation position of drawing operation was detected using the touch panel which uses the display panel 11 as a detection surface, this invention is not limited to this. For example, an infrared sensor that detects an operation position using infrared rays may be used. If such an infrared sensor is used, an operation locus can be drawn without contact.

DESCRIPTION OF SYMBOLS 1 Operation input part 2 Drawing data generation part 3 Trajectory drawing part 4 1st end point determination part 4a Timer 4b Stop determination part 4c End point calculation part 5 2nd end point determination part 6 Line segment drawing part 7 Drawing data storage part 8 Display control part 9 Display unit 10 Display case 11 Display panel 20 Operation case 21 Key panel 22 Direction key 23 Numeric keypad 31 Operation track storage unit 32 Editing icon 100 Mobile phone A1 Track drawing mode A2 Line drawing mode B1, B3 Operation tracks B2, B4 Straight line B21, B22 endpoint

Claims (9)

An operation position detecting means for detecting an operation position;
Drawing data generating means for generating drawing data based on the operation position;
Display means for performing screen display based on the drawing data,
The drawing data generation means includes a locus drawing means for generating drawing data indicating a locus from the start to the end of the drawing operation;
When the second drawing operation is detected before the end of the first drawing operation, the first end point is determined based on the operation position of the first drawing operation at the start of the second drawing operation. One end point determination means;
Second end point determining means for determining a second end point based on the operation position of the second drawing operation at the end of the first drawing operation;
A drawing apparatus comprising line segment drawing means for generating drawing data indicating a line segment connecting the first end point and the second end point. An operation position detecting means for detecting an operation position;
Drawing data generating means for generating drawing data based on the operation position;
Display means for performing screen display based on the drawing data,
The drawing data generation means includes a locus drawing means for generating drawing data indicating a locus from the start to the end of the drawing operation;
When the second drawing operation is detected before the end of the first drawing operation, the first end point determination is performed to determine the first end point based on the locus of the first drawing operation before the second drawing operation. Means,
Second end point determining means for determining a second end point based on the operation position of the second drawing operation at the end of the first drawing operation;
A drawing apparatus comprising line segment drawing means for generating drawing data indicating a line segment connecting the first end point and the second end point.   The first endpoint determining means determines the first endpoint based on the operation position of the first drawing operation at the time when it is determined that the movement of the finger has stopped for a certain period of time during the first drawing operation. The drawing apparatus according to claim 2.   The locus drawing means generates drawing data indicating a locus until the end of the second drawing operation, starting from the operation position of the second drawing operation at the end of the first drawing operation. The drawing apparatus according to claim 1 or 2.   3. The drawing apparatus according to claim 1, wherein the line segment drawing unit generates drawing data indicating a straight line connecting the first end point and the second end point.   The line segment drawing means changes the line type of the line segment based on the number of taps of the second drawing operation at the start of the second drawing operation. Drawing device.   The drawing apparatus according to claim 1, wherein the line segment drawing unit changes a line type of the line segment based on a third drawing operation before determining the second end point. The display means displays an editing icon based on the determination of the first endpoint,
The drawing apparatus according to claim 7, wherein the line segment drawing unit changes a line type of the line segment based on an operation of the editing icon.   The said display means displays the edit icon for changing the line type of the said line segment in the vicinity of the said line segment based on the determination of the 2nd end point. Drawing device.

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