JP5200555B2 - Recording / reproducing apparatus and program - Google Patents

Description

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

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

  A system has been proposed in which slide transitions, pointer trajectories, voices, and the like in such a presentation are recorded and can be reproduced later.

  In Patent Literature 1, 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 each slide in which one page of slide is displayed. Discloses a technique for recording audio data.

  Patent Document 2 discloses a technique for storing an audio signal in association with a classification criterion for an image that is captured almost simultaneously with the time when the audio signal is captured.

JP 2003-58901 A JP 2006-127518 A

  By the way, the pointer displayed on the slide is not necessarily a pointer intentionally displayed for the purpose of 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.

The invention according to claim 1 of the present application continuously acquires the position information of the pointer displayed on the screen from the recording start time, and associates the acquired position information of each pointer with the time from the recording start time. Calculating a moving speed of the pointer based on the position information recording unit to be recorded in the storage device, the two pieces of position information stored in the position information recording unit and the time associated with the two pieces of position information, from each pointer position information stored in the position information storage device, the moving speed is selected the position information of the reproduction object pointer except the pointer to a predetermined period zero or a predetermined threshold speed or higher, the reproduced A playback unit that displays a pointer in time series from the recording start time at a position on the screen corresponding to the position information of the pointer.

The invention according to claim 2 of the present application is the recording / reproducing apparatus according to claim 1, wherein the pointer position information includes an x-coordinate value and a y-coordinate value, and the reproducing unit is equal to or higher than the predetermined threshold speed. even pointer is a moving speed, Tokoro regular inter above, if the x-coordinate value or y-coordinate value of the position information of the pointer alternately increases and decreases, as the position information of the pointer to be reproduced, the position The recording / reproducing apparatus is characterized by displaying a pointer based on information.

According to a third aspect of the present invention, in the recording / reproducing apparatus according to the second aspect, the reproducing unit is based on a position information group of pointers in which the x coordinate value or the y coordinate value repeats increasing and decreasing alternately for the predetermined period or longer . While the pointer is displayed, the recording / reproducing apparatus is characterized in that a screen area determined based on the position information group of the pointer is highlighted.

The invention according to claim 4 of the present application continuously acquires the position information of the pointer displayed on the screen from the recording start time, and associates the acquired position information of each pointer with the time from the recording start time. Calculating a moving speed of the pointer based on the position information recording unit to be recorded in the storage device, the two pieces of position information stored in the position information recording unit and the time associated with the two pieces of position information, from each pointer position information stored in the position information storage device, the moving speed is selected the position information of the reproduction object pointer except the pointer to a predetermined period zero or a predetermined threshold speed or higher, the reproduced A playback unit that displays the pointer in time series from the recording start time at a position on the screen corresponding to the position information of the pointer, and a program for causing the computer to function It is.

  According to the first and fourth aspects of the present invention, the pointers are displayed on the screen in chronological order based only on the position information of the pointer to be reproduced, excluding the pointer whose moving speed is zero for a predetermined period or higher than a predetermined threshold speed. Therefore, it is possible to reduce adverse effects caused by the reproduction of unnecessary pointer trajectories.

  According to the second aspect of the present invention, in the case of a pointer whose movement speed is continuously reversed for at least one direction on the screen for a predetermined period or longer, the position information of the pointer to be reproduced is the position information. Since the pointer based on the information is displayed, for example, when the operator moves the pointer violently in order to indicate the highlighted portion on the slide, the pointer can be displayed on the screen at the time of reproduction.

  According to the invention of claim 3 of the present application, while the pointer based on the position information group of the pointer that is continuously inverted for a predetermined period is displayed, the screen area determined based on the position information group of the pointer is highlighted. For example, it becomes easier to recognize the emphasized portion as compared with the case where the portion emphasized by the operator is not highlighted.

  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.

  Conventionally, when reproducing the state of a presentation, in order to faithfully reproduce the state of the presentation, the pointer locus is generally reproduced using all the position information of the pointer acquired during recording. However, in an actual presentation, the pointer may be displayed stationary at a position that is not related to the slide content displayed on the screen. Also, the viewer's attention may be diverted when the operator moves the pointer unnecessarily. Furthermore, the operator may move the pointer violently in order to indicate the highlighted portion on the slide, but such a fast pointer may be difficult for the viewer to see.

  Therefore, in the present embodiment, the information processing apparatus 100 selects only necessary position information using the pointer speed as a parameter from the periodically acquired pointer position information while recording the presentation state. ,Reproduce.

  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, 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 separated into, for example, displayed slide units, and a single audio compression file. Are stored in the voice data storage unit 54.

  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 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 referred to as “recording time”). Are sequentially recorded in the pointer position information storage unit 56.

  Regardless of the application such as the presentation application, it may be configured to acquire and store the displayed slide, the pointer on the slide, and the audio data input during the period in which the slide is displayed. Is optional.

  FIG. 2 shows a table in which pointer position information stored in the pointer position information storage unit 56 is associated with a recording time (hereinafter referred to as “pointer table”).

  The pointer display determination unit 44 refers to the pointer table stored in the pointer position information storage unit 56 and assigns a display flag “1” to the pointer position information to be reproduced in the pointer position information group. At the time of reproduction, the presentation reproduction unit 45 displays the pointer on the screen only for the pointer position information whose display flag is “1” among the pointer position information registered in the pointer table.

  FIG. 3 is a flowchart showing a procedure when the pointer display determination unit 44 assigns a display flag to pointer position information to be reproduced.

  In FIG. 3, the pointer display determination unit 44 first refers to the pointer table and sets the display flag of the position information of each pointer to “1” (S100). Next, the pointer display determination unit 44 calculates the moving speed of the pointer when the pointer position information is acquired (S102). When the pointer position information is indicated by the x-coordinate and the y-coordinate, for example, when the pointer moves from the coordinates (x1, y1) to the coordinates (x2, y2) during the time width T, The speed of the coordinates (x2, y2) may be calculated as ((x2-x1) / T, (y2-y1) / T).

  Subsequently, the pointer display determination unit 44 refers to the moving speed of each pointer and determines whether or not there is a pointer position information group in which the moving speed continues to be zero (0, 0) in the predetermined period Ta. (S104). As a result of the determination, if such a pointer position information group exists (the determination result of step S104 is affirmative “Y”), the pointer display determination unit 44 sets each display flag of the corresponding pointer position information group. “0” is set (S106).

On the other hand, as a result of the determination, if there is no pointer position information group in which the moving speed continues to be zero (the determination result in step S104 is negative “N”), the pointer display determining unit 44 moves the moving speed in the x-axis direction. It is determined whether there is pointer position information in which the moving speed Vy in the Vx or y-axis direction is equal to or higher than a predetermined threshold speed Vt (S108). If there is such pointer position information as a result of the determination (the determination result in step S108 is affirmative “Y”), the display flag for the corresponding pointer position information is set to “0” (S106).

  On the other hand, as a result of the determination, if there is no pointer position information that satisfies the condition of the threshold speed Vt or more (the determination result of step S108 is negative “N”), the pointer display determination unit 44 is registered in the pointer table. It is confirmed whether or not all pointer position information is the pointer position information to be reproduced (S120). If all the confirmation has been completed, the process ends (the determination result in step S120 is affirmative “Y”). On the other hand, if all the confirmations have not been completed (the determination result of step S120 is negative “N”), the pointer display determination unit 44 continues the processing after step S104.

  FIG. 4 shows an example of a pointer table in which the pointer position information to which the display flag is added is registered in the above procedure. The presentation playback unit 45 plays back slides and audio. Further, the presentation reproduction unit 45 refers to the pointer position information registered in the pointer table as shown in FIG. 4 in time series in accordance with the reproduction of the slide and the sound, and reproduces 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, at the time of reproducing the presentation, the pointers are sequentially displayed on the screen in time series in accordance with only the pointer position information to be reproduced excluding the pointer whose moving speed is equal to or higher than the predetermined period Ta or the threshold speed Vt. indicate.

  In this embodiment, a pointer that has not moved on the screen for a long time is determined as an unnecessary display that is stationary at a position unrelated to the content of the presentation, and is not displayed during playback. Further, the pointer that moves on the screen at the threshold speed Vt or higher is determined to be a pointer that has been moved unnecessarily without the intention of the operator, and is not displayed during reproduction. Therefore, according to the present embodiment, adverse effects due to reproduction of unnecessary pointer trajectories are reduced.

  By the way, even when the operator moves the pointer at a threshold speed Vt or higher, the operator may move the pointer violently in order to indicate the highlighted portion on the slide. However, under the above conditions, all pointers having a threshold speed Vt or higher are excluded from candidates for reproduction. In addition, when the operator moves the pointer violently in order to indicate an emphasized part on the slide, such a pointer may be difficult for the viewer to see.

  Therefore, as a modification of the present embodiment, for example, the pointer display determination unit 44 includes a pointer (hereinafter referred to as a pointer) whose movement speed is continuously reversed in the x-axis direction or the y-axis direction for a predetermined period T or more in the pointer position information group. In the case of “inverted pointer”), the display flag may be set to “1” as pointer position information to be reproduced. In addition, in order to highlight the slide area indicated by the reverse pointer, for example, a process of highlighting the screen such as bordering the area with a thick line or changing the color of the area may be performed.

  FIG. 5 shows processing when the pointer display determination unit 44 assigns an area emphasis flag to each pointer position information and further sets an emphasis display area so that the slide area indicated by the reverse pointer can be highlighted. It is a flowchart which shows a procedure.

  5 is different from the flowchart shown in FIG. 3 in that steps S110 to S114 are added. Hereinafter, step S110 to step S114 will be described.

  In FIG. 5, after setting the display flag based on the moving speed as described above, the pointer display determination unit 44 further reverses once in the x-axis direction or the y-axis direction, and then for a predetermined period ΔTc ( It is determined whether or not there is a reversal pointer group that continues the movement of reversing again within «Tb) for a predetermined period Tb or more (S110). If such a reverse pointer group exists (the determination result in step S110 is affirmative “Y”), the display flag corresponding to the corresponding pointer position information is set to “1”, and the region emphasis flag is set to “ 1 ”is set (S112). Further, the pointer display determination unit 44 sets an emphasized display area (S114). For example, when the locus of the reverse pointer group is indicated by the broken line L in FIG. 6, the pointer display determination unit 44 identifies the minimum value Xl, Yd and the maximum value Xr, Yu of the x coordinate and the y coordinate in the reverse pointer group. To do. Thereafter, the pointer display determination unit 44, for example, a rectangle (square) having (Xl, Yd), (Xr, Yd), (Xl, Yu), (Xr, Yu) as vertices, or an ellipse inscribed in the rectangle May be set as the highlight area. 7A and 7B show an example of the highlight display area.

  FIG. 8 shows an example of a pointer table when the area of the slide indicated by the reverse pointer is highlighted. The presentation reproducing unit 45 refers to the pointer table as shown in FIG. 8 and displays the screen for the pointer position information whose display flag is “1” among the pointer position information, and the area emphasis flag is “1”. The pointer position information is highlighted (highlighted) by a predetermined method such as changing the color of the slide or bordering the area with a bold line in the highlighted area registered in the highlighted area field.

  As described above, in this modified example, even if the moving speed is a pointer having a threshold speed Vt or higher, if it corresponds to the reverse pointer, the pointer is displayed and an area defined based on the trajectory of the reverse pointer To highlight. As a result, when the operator moves the pointer violently in order to indicate the emphasized part on the slide, the emphasized part is highlighted and the viewer's difficulty in seeing is reduced.

It is a figure which shows the functional block of the information processing apparatus which concerns on this embodiment. It is a figure which shows an example of the table which linked | related the positional information on the pointer, and recording time. It is a flowchart which shows the procedure in case a pointer display determination part provides a display flag with respect to the pointer position information of reproduction | regeneration object. It is a figure which shows an example of the pointer table in which each pointer position information to which the display flag was given was registered. It is a flowchart which shows the procedure in case a pointer display determination part provides a display flag and an area | region emphasis flag with respect to the pointer position information of reproduction | regeneration object. It is a figure which shows an example of the locus | trajectory of a determination pointer group. It is a figure which shows an example of a highlight display area. It is a figure which shows an example of a highlight display area. It is a figure which shows an example of the pointer table in which each pointer position information which provided the display flag and the area | region emphasis flag was registered.

Explanation of symbols

  10 CPU, 20 volatile memory, 30 non-volatile memory, 40 program, 41 presentation application, 42 audio recording unit, 43 pointer position information acquisition unit, 44 pointer display determination unit, 45 presentation playback unit, 50 database, 52 presentation file storage Section, 54 voice data storage section, 56 pointer position information storage section, 70 operation input section, 72 display output section, 74 voice input section, 90 bus line.

Claims (4)

A position information recording unit that continuously acquires the position information of the pointer displayed on the screen from the recording start time and records the acquired position information of each pointer in the position information storage device in association with the time from the recording start time When,
The moving speed of the pointer is calculated based on the two pieces of position information stored in the position information recording unit and the time associated with the two pieces of position information, and each pointer stored in the position information storage device is calculated . from the position information, the moving speed is selected the position information of the reproduction object pointer except the pointer to a predetermined period zero or a predetermined threshold speed or higher, on the screen corresponding to the position information of the reproduction object pointer A playback unit for displaying a pointer in time series from the recording start time at a position;
A recording / reproducing apparatus comprising: The recording / reproducing apparatus according to claim 1,
The position information of the pointer has an x-coordinate value and a y-coordinate value,
The reproducing unit, the even pointer is a predetermined threshold speed or moving speed, Tokoro regular inter above, if the x-coordinate value or y-coordinate value of the position information of the pointer alternately increase and decrease the The pointer based on the position information is displayed as the position information of the pointer to be reproduced.
And a recording / reproducing apparatus. The recording / reproducing apparatus according to claim 2.
While the reproduction unit displays a pointer based on the position information group of the pointer in which the x-coordinate value or the y-coordinate value alternately increases and decreases for the predetermined period or longer , a screen area determined based on the position information group of the pointer is displayed. Highlight,
And a recording / reproducing apparatus. A position information recording unit that continuously acquires the position information of the pointer displayed on the screen from the recording start time and records the acquired position information of each pointer in the position information storage device in association with the time from the recording start time When,
The moving speed of the pointer is calculated based on the two pieces of position information stored in the position information recording unit and the time associated with the two pieces of position information, and each pointer stored in the position information storage device is calculated . from the position information, the moving speed is selected the position information of the reproduction object pointer except the pointer to a predetermined period zero or a predetermined threshold speed or higher, on the screen corresponding to the position information of the reproduction object pointer A playback unit for displaying a pointer in time series from the recording start time at a position;
Program to make the computer function.

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