JP5205989B2 - Recording / reproducing apparatus and program - Google Patents

Description

  The present invention relates to a recording / reproducing apparatus and a program.

  In conferences and presentations (hereinafter referred to as presentations), the presenter often switches slides while explaining, and further displays a cursor or pointer on the displayed slide to indicate the explanation part.

  Japanese Patent Application Laid-Open No. 2004-151561 discloses a technique for storing each index, each presentation information, and question / answer video / audio information in a database in association with each other using the operation information related to the selection operation of the presenter as index information.

  In Patent Document 2, information on the cursor coordinates is recorded at every predetermined sampling period, information on the slide image that has been switched is recorded for each slide switching instruction from the user, and a period in which a slide of one page is displayed. A technique for recording audio data is disclosed.

JP 2002-109099 A JP 2003-58901 A

  By the way, the pointer displayed on the slide is not necessarily a pointer necessary for assisting the explanation of the operator in the presentation.

  An object of the present invention is to reduce adverse effects caused by reproducing an unnecessary pointer locus when reproducing a pointer locus recorded at the time of presentation.

According to the first aspect of the present invention, a position information recording unit that sequentially acquires position information of a pointer displayed on a slide including at least one object area and a background area and records the position information in a position information storage device; and the position A reproduction unit for sequentially displaying pointers in time series at positions on a slide corresponding to position information of a pointer to be reproduced from position information of each pointer recorded in an information storage device, the position information accumulation From the position information of each pointer recorded in the apparatus, the position information of the pointer existing in the object area is selected as the position information of the pointer to be reproduced, and the position information of the pointer existing in the background area is selected. position and a playback unit not selected as the information, the reproduction unit, position information of the pointer present in the object region with the text For, the position information of the pointer having the velocity component in the same direction as the reading direction of the character string is selected as the position information of the pointer to be reproduced, and the pointer does not have the velocity component in the same direction as the reading direction of the character string. not selected as the position information of the position information reproduced pointer, it is a recording and reproducing apparatus you said.

The invention according to claim 2 of the present application is the recording / reproducing apparatus according to claim 1 , wherein the pointer position information group exists in the object area including the character string, and continues for at least a predetermined period in at least one direction. As for the position information group of the pointer whose moving speed is reversed, the position information of the pointer not having the speed component in the same direction as the reading direction of the character string is selected as the position information of the pointer to be reproduced. A recording / reproducing apparatus characterized by the above.

The invention according to claim 3 of the present application is the recording / reproducing apparatus according to claim 1 , wherein the position information group of the pointers existing in the object area including the character string, the position information group of the pointers moving in an arc shape, In the recording / reproducing apparatus, even the position information of the pointer not having the velocity component in the same direction as the reading direction of the character string is selected as the position information of the pointer to be reproduced.

The invention according to claim 4 of the present application is a position information recording unit that sequentially acquires position information of a pointer displayed on a slide including at least one object area and a background area, and records the position information in a position information storage device; A reproduction unit for sequentially displaying pointers in time series at positions on a slide corresponding to position information of a pointer to be reproduced from position information of each pointer recorded in an information storage device, the position information accumulation From the position information of each pointer recorded in the apparatus, the position information of the pointer existing in the object area is selected as the position information of the pointer to be reproduced, and the position information of the pointer existing in the background area is selected. and a reproduction section which is not selected as the position information of the reproduction unit, in the position information group of a pointer is present only a predetermined short period to the background area Thus, when the position information of the pointers before and after the time information of the position information group of the pointer exists in the same object area, the position information group of the pointer that exists in the background area only for a predetermined short period of time, The recording / reproducing apparatus is characterized in that it is selected as position information of a pointer to be reproduced.

The invention according to claim 5 of the present invention is a position information recording unit that sequentially acquires position information of a pointer displayed on a slide including at least one object area and a background area, and records the position information in a position information storage device; A reproduction unit for sequentially displaying pointers in time series at positions on a slide corresponding to position information of a pointer to be reproduced from position information of each pointer recorded in an information storage device, the position information accumulation From the position information of each pointer recorded in the apparatus, the position information of the pointer existing in the object area is selected as the position information of the pointer to be reproduced, and the position information of the pointer existing in the background area is selected. a as the position information of a program for causing a reproducing unit is not selected, the computer and the reproduction unit, containing a string For the pointer position information group existing in the object area, the position information of the pointer having the velocity component in the same direction as the reading direction of the character string is selected as the position information of the pointer to be reproduced, and the reading direction of the character string This is a program characterized by not selecting position information of a pointer having no velocity component in the same direction as position information of a pointer to be reproduced .

According to the first and fifth aspects of the present invention, the pointers based on the position information of the pointers existing in the object area are displayed on the screen in chronological order, and the pointers based on the position information of the pointers existing in the background area are displayed on the screen. Since it is not displayed, it is possible to reduce adverse effects caused by the reproduction of unnecessary pointer trajectories.

Furthermore , since a pointer that moves in a direction different from the reading direction of the character string is not reproduced, it is possible to reduce adverse effects caused by reproducing an unnecessary pointer trajectory.

According to the invention of claim 2 of the present application, in the case of a pointer that repeats inversion on an object area including a character string, even a pointer that moves in a direction different from the reading direction of the character string is reproduced. It is possible to reduce an adverse effect caused by the fact that a necessary pointer locus is not reproduced.

According to the third aspect of the present invention, in the case of a pointer that moves in an arc shape on an object area that includes a character string, even a pointer that moves in a direction different from the reading direction of the character string is reproduced. In addition, it is possible to reduce adverse effects caused by the fact that the originally required pointer trajectory is not reproduced.

According to the invention of claim 4 of the present application, pointers temporarily deviating from the object area are also reproduced, so that adverse effects caused by not reproducing the originally required pointer trajectory can be reduced.

  The best mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described below with reference to the drawings.

  FIG. 1 is a diagram illustrating functional blocks of the information processing apparatus according to the present embodiment.

  The information processing apparatus 100 records the state of the presentation to be executed and reproduces the recorded state of the presentation. The information processing apparatus 100 records the locus of the pointer on the slide, the sound, and the slide transition of the slide page as a presentation.

  In the present embodiment, the slide page switching transition is not described in detail in order to simplify the description. However, the information processing apparatus 100, for example, acquires pointer position information in response to the slide page switching, and sequentially records the identification information of the slide after switching in association with the acquired pointer position information. Just keep it. At the time of reproduction, if slide identification information is associated with the position information, the slide currently displayed may be switched to the slide corresponding to the identification information.

  Here, the pointer is displayed for the purpose of facilitating the understanding of the presentation contents on the listener side. In general, when reproducing the state of a presentation, in order to faithfully reproduce the state of the presentation, the pointer locus is reproduced using all the pointer position information acquired during recording. However, in an actual presentation, all pointers do not necessarily help the listener understand the presentation content easily. Furthermore, there are pointers that, when displayed, conversely hinder the understanding of the listener.

  Therefore, in the present embodiment, the position of the pointer that may hinder the understanding of the contents of the presentation on the listener's side among the position information of the pointer acquired periodically while the information processing apparatus 100 is recording the state of the presentation. The information is excluded and only necessary position information is selected and reproduced.

  More specifically, a pointer pointing to an object such as a character string or graphic existing on the slide is a display target, and a pointer pointing to a “background” where no object exists is a non-display target.

  If the pointer points to an object, the operator (presenter) is likely to explain the contents of the object. Therefore, in the present embodiment, such a pointer is a display target. On the other hand, when the pointer points to the background, there is a high possibility that the operator explains contents that are not directly related to the background contents. Therefore, in the present embodiment, such a pointer is a non-display target.

  When the object is a character string, a pointer that moves in the same direction as the reading direction of the character string is likely to be related to the explanation of the operator. However, the pointer that moves in the direction opposite to the reading direction of the character string is unlikely to be related to the explanation of the operator. Therefore, in the present embodiment, among pointers that point to character strings, pointers that move in the direction opposite to the reading direction of character strings are not displayed.

  On the other hand, when the operator explains the contents of an object, the pointer may be rapidly and continuously reversed in the left, right, up, down, or arc shape on the object in order to attract the listener's interest in the object. (Hereinafter, such movement of the pointer is referred to as “continuous inversion movement”). Since such a pointer is useful for facilitating the understanding of the presentation contents on the listener side, it is preferable to display the pointer regardless of the moving direction of the pointer. Therefore, in this embodiment, even if the object is a character string and the pointer moves in the direction opposite to the reading direction of the character string, if the movement of the pointer corresponds to continuous inversion movement, the object is displayed. .

  Here, each part shown in FIG. 1 is demonstrated in detail.

  The CPU 10 expands the program 40 stored in the nonvolatile memory 30 in the volatile memory 20 and controls each unit via the bus line 90 according to the expanded program 40. The nonvolatile memory 30 stores a program 40 and a database (DB) 50. Details of the program 40 and the DB 50 will be described later.

  The operation input unit 70 receives an instruction input from an operator via a mouse, a keyboard, or the like. The display output unit 72 outputs image data including a slide and a pointer as a video signal to a display or a projector. The audio input unit 74 receives an input of an audio signal via a microphone or the like during recording. Furthermore, the audio input unit 74 outputs an audio signal to the speaker during reproduction.

  Next, the program 40 and DB 50 stored in the nonvolatile memory 30 will be described in more detail.

  The presentation application 41 is an application program, which displays a slide image stored in the presentation file on the screen based on a presentation file created in advance and stored in the presentation file storage unit 52, from the operator. The slide page displayed is switched according to the operation of the switching instruction.

  The audio recording unit 42 compresses the audio data input from the audio input unit 74 and stores it in the audio data storage unit 54 during the period when the presentation application 41 is executing a presentation by the real-time compression method. More specifically, the audio recording unit 42 frames (blocks) the sequentially input audio data with a predetermined time width (a predetermined compression bit rate (for example, 64 kbps)) in response to a recording start instruction. Each frame (block) is compressed by a predetermined compression algorithm such as orthogonal transformation (for example, MP3 method), and each compressed frame is divided into, for example, displayed slide units as a single audio compression file. The sound data is stored in the sound data storage unit 54. The audio recording unit 42 may store the input audio data in the audio data storage unit 54 without compressing the input audio data.

  The pointer position information acquisition unit 43 requests the position information (coordinate information) of the pointer on the displayed slide from the presentation application 41 every predetermined time width T (for example, T = 0.1 sec). Furthermore, the pointer position information acquisition unit 43 acquires the position information of the pointer provided from the presentation application 41 in response to a request, and the time from the recording start time of the presentation state at the time when the position information is acquired (hereinafter, “ The pointer position information storage unit 56 sequentially records the pointer information table as a pointer information table.

  The slide analysis unit 44 specifies position information and object attributes (character string or graphic) of each object constituting each slide stored in the recording file to be recorded. Further, the slide analysis unit 44 records the specified position information and object attribute in the layout information storage unit 58 in association with an object ID that uniquely specifies each object for each object. In addition, the slide analysis unit 44 specifies the reading direction of the character string of the character string object, and records the reading direction in the layout information storage unit 58 in association with each object ID. The slide analysis unit 44 is realized by an auxiliary program that allows a third party or the like to add a unique function to an application program such as presentation software. The slide analysis unit 44 is a plug-in, for example. When the presentation application 41 operates on Windows (registered trademark) which is one of basic operating systems (OS), the slide analysis unit 44 may be realized by a DLL (Dynamic Link Library). The same applies to other parts included in the program 40, and each part can be realized by, for example, a plug-in.

  FIG. 2 is a flowchart showing a procedure by which the slide analysis unit 44 specifies the reading direction of the character string.

  In FIG. 2, the slide analysis unit 44 first performs character recognition processing in the row direction on the character string of the character string object by a known method (S100). As a result of the processing, when the recognition rate of character recognition in the row direction is α (for example, 90%) or more (determination result in step S102, affirmative “Y”), the slide analysis unit 44 determines that the character string object is Judging that it is horizontal writing, the reading direction is set to “L → R” in association with the object ID of the object recorded in the layout information storage unit 58 (S104).

  On the other hand, if the recognition rate of character recognition in the row direction is smaller than α (determination result in step S102, negative “N”), the slide analysis unit 44 performs character recognition processing in the column direction (S106). If the recognition rate for character recognition in the column direction is greater than or equal to α as a result of the processing (determination result in step S108 is affirmative “Y”), the slide analysis unit 44 determines that the character string object is vertical writing. Then, the reading direction is set to “U → D” in association with the object ID of the object recorded in the layout information storage unit 58 (S110). If the recognition rate of character recognition in the column direction is also smaller than α (the determination result of step S108 is negative “N”), it is determined as unknown and the object recorded in the layout information storage unit 58 is recorded. The reading direction is set to “Null” in association with the object ID (S112).

  Thereafter, the slide analysis unit 44 determines whether or not the setting of the reading direction of all the character string objects has been completed (S114), and if not completed (the determination result of step S114 is negative “N "), The process after step S100 is repeated. On the other hand, when the setting of the reading direction of all the character string objects is completed (the determination result of step S114 is affirmative “Y”), the slide analysis unit 44 ends the process.

  For example, for each slide shown in FIG. 3A, when each object is specified as shown in FIG. 3B, a layout information table as shown in FIG. As shown in FIG. 4, the layout information table includes an object ID 200, an object attribute 202, an upper left coordinate 204, an upper right coordinate 206, and a reading direction 208. In the object attribute 202, “text” indicates a character string and “fig” indicates a figure. The upper left coordinates 204 and the upper right coordinates 206 are coordinates for specifying the area of each object, and indicate the coordinates of two opposing vertices among the four vertices of the rectangular area containing the object. Further, as described above, the reading direction 208 indicates the reading direction of the character string when the object is a character string object.

  As described above, the slide analysis unit 44 identifies information regarding each object of each slide of the presentation file, and records it in the layout information storage unit 58 as a layout information table.

  Next, the pointer display determination unit 45 will be described.

  The pointer display determination unit 45 refers to the pointer position table and the layout information table to determine whether each pointer position information registered in the pointer position table is a display target or a non-display target. The result is registered in the pointer position table in association with each pointer position information.

  FIG. 5 is a flowchart illustrating a procedure in which the pointer display determination unit 45 performs display determination on each pointer position information.

  The pointer display determination unit 45 refers to the pointer position table and the layout information table, searches for pointer position information existing in the background area among the pointer position information, and sets the pointer position information of the searched background area to “non-display”. “Display” is set (S200).

  Next, the pointer display determination unit 45 is a pointer position that exists in the graphic or character string object area in the pointer position information and has been stopped for a predetermined time (for example, 2 seconds) at the same position. Information is searched, and the searched pointer position information is set to “display” (S202). Whether or not the vehicle is in the stationary state is determined as a stationary state, for example, when the pointer movement speed is calculated based on the pointer position information and the speed is zero or the speed is equal to or lower than a predetermined threshold for a predetermined time or longer. do it. For example, when the pointer moves from the coordinates (x1, y1) to the coordinates (x2, y2) during the time width T, which is the acquisition interval of the pointer position information, the moving speed is the coordinates (x2, y2). Is calculated as ((x2-x1) / T, (y2-y1) / T).

  Also, the pointer display determination unit 45 searches for pointer position information that exists in the graphic object area and is in a moving state (the moving speed is not zero or the moving speed is greater than a predetermined threshold), and the searched pointer position Information is set to “display” (S204). In addition, the pointer display determination unit 45 exists in the character string object area, and among the pointer position information in the moving state, the character string direction and the pointer movement direction continue for the predetermined time or more and the same pointer position information And the searched pointer position information is set to “display” (S206). Further, the pointer display determination unit 45 searches the pointer position information in the character string object area and in the moving state, and among the searched pointer position information, the pointer position information in the “continuous inversion moving state” And the searched pointer position information is set to “display” (S208).

  The pointer position information in the “continuous reverse movement state” is reversed for a predetermined period ΔTc after being reversed once in the x-axis direction or the y-axis direction (after the sign of the moving speed in the x-axis direction or the y-axis direction has changed). It is pointer position information that satisfies the condition that the movement of reversing in again continues for a predetermined period Tb or longer.

  Finally, the pointer display determination unit 45 sets the pointer position information that has not been set to “display” in steps S200 to S208 among the pointer position information existing in the object area to “non-display” (S210). The process ends.

  FIG. 6 shows an example of a pointer position table stored in the pointer position information storage unit 56 after the display determination is completed. As shown in FIG. 6, a display flag “1” or “0” is registered in the pointer position table in association with the position information acquisition time (recording time) and the X and Y coordinates of the pointer. Here, the display flag “1” indicates “display”, and the display flag “0” indicates “non-display”.

  Returning to FIG. 1, the presentation playback unit 46 plays back slides and audio. Further, the presentation reproduction unit 46 refers to the pointer position information registered in the pointer position table as shown in FIG. 6 in time series in accordance with the reproduction of the slide and the sound, and the reproduction target whose display flag is “1”. The pointer position information is sequentially selected, and the pointer is displayed at the position of the screen corresponding to the selected pointer position information.

  As described above, in the present embodiment, the pointer display determination unit 45 selects, from among the recorded pointer position information, only position information that promotes understanding of the contents of the presentation on the listener side as a display target. That is, pointer position information that may hinder the understanding of the contents of the presentation on the listener side is excluded from the display target. Therefore, when reproducing the pointer trajectory recorded at the time of presentation, adverse effects caused by reproducing the unnecessary pointer trajectory are reduced.

  By the way, among the pointers pointing to the object area, as shown in FIG. 7A due to the operator's messy pointer operation or the like, after temporarily deviating from the object area (symbol P1), the object area may return to the object area again. is there. When drawing such a pointer locus, it is preferable to reproduce a pointer that temporarily deviates from the object area.

  However, in the above embodiment, pointer position information that does not exist in the object area, that is, exists in the background area, is set to “non-display”. Therefore, a pointer that temporarily deviates from the object area is not reproduced.

  Therefore, in order to reproduce a pointer that has temporarily deviated from the object area, for example, the slide analysis unit 44 sets the area of each object (upper left coordinate and right side so that an area larger than the actual object area becomes the object area). Lower coordinates) may be set. For example, the slide analysis unit 44 enlarges the rectangular area containing the object at a predetermined enlargement ratio (eg, 110%), and registers the upper left coordinates and lower right coordinates of the enlarged rectangular area in the layout information table. Good. Thus, by making the object area wider than the actual area, the pointer display determination unit 45 can also determine the pointer position information corresponding to the pointer that temporarily deviates from the object area as the display target. Further, for example, as shown in FIG. 7B, even when the pointer indicates a locus (reference P2) that moves in the vicinity of the object area, by making the object area wider than the actual area by a predetermined magnification, as described above, The pointer display determination unit 45 can determine the display target.

  In addition to making the object area wider than the actual enlargement ratio, for example, a pointer position information group that exists in the background area for a predetermined period of time, and the object area in which the preceding and following pointer position information groups are the same The pointer display determination unit 45 searches for the pointer position information group existing in, and sets the searched pointer position information group to “display” as the pointer position information group corresponding to the pointer that temporarily deviates from the object area. You may make it do.

  Further, as shown in FIG. 7C, when the pointer moves in an arc on the object area (reference P3), the operator intentionally moves the pointer in an arc shape in order to attract the listener's attention. There is a possibility. Therefore, when the object is a character string, even if the pointer position information is different from the reading direction, if the pointer position information is a part of a pointer that draws an arc-shaped locus, it is preferable to display the pointer. Therefore, the pointer display determination unit 45 is a pointer position information group existing in the character string object area, and when the pointer position information group draws an arcuate locus, the pointer position information group is all “display”. You may make it set to.

  In addition, what is necessary is just to perform the method in which the pointer display determination part 45 specifies the pointer position information group which draws a circular arc as follows, for example.

  First, the pointer display determination unit 45 sets each pointer position information on the slide in the X-axis positive direction and the Y-axis positive direction (hereinafter referred to as “positive / positive direction”), the X-axis positive direction and the Y-axis negative. Pointer moving in the direction (hereinafter referred to as “positive / negative direction”), pointer moving in the negative X-axis direction and negative Y-axis direction (hereinafter referred to as “negative / negative direction”), and negative X-axis direction and Y-axis The pointers are classified into four pointers moving in the positive direction (hereinafter referred to as “negative / positive direction”), and each direction is registered in the pointer position table in association with each pointer position information. Subsequently, the pointer display determination unit 45 extracts pointer position information that continuously exists on the character string object area. The pointer display determination unit 45 identifies a pattern in the movement direction of the pointer of the extracted pointer position information group. When the identified pattern corresponds to an arc-shaped pattern, the pointer position information group draws an arc. Judge. As shown in FIG. 8, when the pointer draws a clockwise arc (reference R), the movement direction pattern is “negative / negative → negative / positive → positive / positive → positive / negative → negative / negative → ... When the arc is counterclockwise (symbol L), “positive / negative → positive / positive → negative / positive → negative / negative → positive / negative →... Therefore, when the movement direction pattern of the pointer position information group existing on the character string object region corresponds to one of the two patterns, the pointer display determination unit 45 performs the pointer position information group. Set all to "display". Thereby, even when the operator intentionally moves the pointer in the arc shape in the character string object area, the pointer is reproduced.

  In addition, in order to reproduce the pointer trajectory more easily, the pointer position information to be displayed may be appropriately modified.

  For example, in the case of a pointer that moves in the reading direction on a character string object area, the pointer position information may be corrected so as to move linearly in the reading direction. Alternatively, when the pointer draws a substantially arc on the object area, the pointer position information may be corrected so as to draw an arc whose center is the center (center of gravity) of the object. In the case of a pointer that moves over the character string object area and moves over the character string, if it is horizontal writing, it is below the character string, and if it is vertical writing, it is on the right or left side of the character string. The pointer position information may be modified so as to move the pointer so that the pointer does not overlap the character string. In addition, in the case of a pointer that remains on the object area, the pointer position information may be modified so that the pointer is displayed near the edge of the object area. For example, in the case of the pointer position information of the character string object area, the pointer position information may be corrected so as to stop at the beginning of the character string (the bulleted marker portion or the bulleted number portion). In addition, the pointer position information may be corrected so that the moving speed of the pointer position information is constant.

It is a figure which shows the functional block of the information processing apparatus which concerns on this embodiment. It is a flowchart which shows the procedure in which a slide analysis part specifies the reading direction of a character string. It is a figure for demonstrating the layout information of a slide. It is a figure for demonstrating the layout information of a slide. It is a figure which shows an example of the layout information table accumulate | stored in a layout information storage part. It is a flowchart which shows the procedure in which a pointer display determination part performs display determination with respect to each pointer position information. It is a figure which shows an example of the pointer position table accumulate | stored in a pointer position information storage part after the display determination by a pointer display determination part is complete | finished. It is a figure which shows an example of the locus | trajectory of the pointer which moves on a slide. It is a figure which shows an example of the locus | trajectory of the pointer which moves on a slide. It is a figure which shows an example of the locus | trajectory of the pointer which moves on a slide. It is a figure for demonstrating the pattern of the moving direction of a pointer position information group.

Explanation of symbols

  10 CPU, 20 volatile memory, 30 nonvolatile memory, 40 program, 41 presentation application, 42 audio recording unit, 43 pointer position information acquisition unit, 44 slide analysis unit, 45 pointer display determination unit, 46 presentation playback unit, 50 database , 52 presentation file storage unit, 54 audio data storage unit, 56 pointer position information storage unit, 58 layout information storage unit, 70 operation input unit, 72 display output unit, 74 audio input unit, 90 bus line, 100 information processing device.

Claims (5)

A position information recording unit that sequentially acquires position information of a pointer displayed on a slide including at least one object area and a background area, and records the position information in a position information storage device;
A playback unit that sequentially displays pointers in time series at positions on a slide corresponding to the position information of a pointer to be played from among the position information of each pointer recorded in the position information storage device, From the position information of each pointer recorded in the information storage device, the position information of the pointer existing in the object area is selected as the position information of the pointer to be reproduced, and the position information of the pointer existing in the background area is reproduced. A playback unit that is not selected as position information of the pointer,
Equipped with a,
For the position information group of pointers existing in the object area including the character string, the playback unit selects position information of the pointer having a velocity component in the same direction as the reading direction of the character string as the position information of the pointer to be played back. The position information of the pointer that does not have the velocity component in the same direction as the reading direction of the character string is not selected as the position information of the pointer to be reproduced.
Recording reproducing apparatus you wherein a. The recording / reproducing apparatus according to claim 1 ,
A position information group of pointers existing in an object area including a character string, and a position information group of pointers whose movement speed is continuously reversed in at least one direction for a predetermined period or longer is read from the character string. Even if the position information of the pointer does not have a velocity component in the same direction as the direction, it is selected as the position information of the pointer to be reproduced.
And a recording / reproducing apparatus. The recording / reproducing apparatus according to claim 1 ,
Position information group of pointers existing in the object area including the character string, and for the pointer position information group moving in an arc shape, the position of the pointer having no velocity component in the same direction as the reading direction of the character string Even if it is information, select it as the position information of the playback target pointer.
And a recording / reproducing apparatus. A position information recording unit that sequentially acquires position information of a pointer displayed on a slide including at least one object area and a background area, and records the position information in a position information storage device;
A playback unit that sequentially displays pointers in time series at positions on a slide corresponding to the position information of a pointer to be played from among the position information of each pointer recorded in the position information storage device, From the position information of each pointer recorded in the information storage device, the position information of the pointer existing in the object area is selected as the position information of the pointer to be reproduced, and the position information of the pointer existing in the background area is reproduced. A playback unit that is not selected as position information of the pointer,
With
The playback unit is a pointer position information group that exists only in a predetermined short period in the background area, and the position information of the pointers before and after the time series of the position information group of the pointer exists in the same object area In this case, a pointer position information group that exists only in a predetermined short period in the background area is also selected as the position information of the pointer to be reproduced.
And a recording / reproducing apparatus. A position information recording unit that sequentially acquires position information of a pointer displayed on a slide including at least one object area and a background area, and records the position information in a position information storage device;
A playback unit that sequentially displays pointers in time series at positions on a slide corresponding to the position information of a pointer to be played from among the position information of each pointer recorded in the position information storage device, From the position information of each pointer recorded in the information storage device, the position information of the pointer existing in the object area is selected as the position information of the pointer to be reproduced, and the position information of the pointer existing in the background area is reproduced. A playback unit that is not selected as position information of the pointer,
And a program to make the computer function ,
For the position information group of pointers existing in the object area including the character string, the reproducing unit selects position information of the pointer having a velocity component in the same direction as the reading direction of the character string as position information of the pointer to be reproduced. The position information of the pointer that does not have the velocity component in the same direction as the reading direction of the character string is not selected as the position information of the pointer to be reproduced.
A program characterized by that .

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