JP2006119514A - Variable speed display device and its display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a variable speed display device and its display method which can prevent inconvenience and an unpleasant feeling because a reproducing speed at a variable speed reproduction cannot be grasped. <P>SOLUTION: In a variable speed display device 100, a display means 23 which reproduces an image signal transmitted from an image source, a reproducing speed conversion part 25 which is provided between the image source and the display means 23, and which varies the reproducing speed of images to be displayed on the display means 23, an image size control part 27 which expands or contracts a reproduction image size according to the amount of a speed increase or decrease in the reproducing speed conversion part 25, an auxiliary information display part 29 which enables a mark to be displayed on the display means 23, and a mark operation control part 31 which varies the operating speed of the mark according to the amount of the speed increase or decrease in the reproducing speed conversion part 25 are provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a variable speed display device and a display method thereof.

For recording and playback devices such as DVD recorders and blu-ray recorders, to quickly select specific information from a large amount of recorded video / audio information, and conversely to slow down the playback speed too fast to improve visibility or playback Due to demands such as automatically changing the playback speed according to the contents, variable speed display playback is performed.
For example, in a recording / reproducing apparatus, when it is desired to reproduce in a short time, video and audio can be reproduced on the display means at a double reproduction speed. In double speed reproduction, the image signal reproduced at the time of double speed reproduction is subjected to time-axis compression processing to display at a higher output speed. At this time, there is a case where speech speed conversion is performed to slow down the output speed of the voice.

That is, in the recording / reproducing apparatus, audio information and video information are recorded together with time information indicating the time for reproducing each information with the reproduction start position as a reference.
Audio information and video information are handled at the time of recording, editing, and reproduction in units called audio frames and video frames, and can be accessed in units of these frames. Therefore, variable-speed playback such as fast-forward playback and slow playback is possible, and a desired playback location can be quickly searched, or a desired playback location can be carefully observed.

Conventionally, in a recording / reproducing apparatus capable of such variable speed reproduction, a speed display unit is provided in the apparatus body (for example, Patent Document 1). Therefore, the user can grasp the reproduction speed by visually checking the update speed of the time information displayed on the speed display section.
Shoko Sho 63-36508 (Fig. 3)

However, when viewing an image whose playback speed changes automatically, the user is usually not aware of the speed. For this reason, if the playback speed is repeatedly increased or decreased frequently, there is a high possibility that some users will feel uncomfortable.
Further, it is inconvenient to visually recognize the speed display section of the recording / reproducing apparatus main body that is separated from the display means, and in particular, at the time of gazing at the image, there is a problem that attention is reduced by viewing the speed display section that is separated from the display means. there were.

  Problems to be solved by the present invention include problems such as inconvenience and discomfort due to the inability to grasp the playback speed during variable speed playback in a conventional DVD recorder, blu-ray recorder or the like, As an example, there is a problem that attention is reduced by visually recognizing the separated speed display portions.

The variable speed display device according to claim 1, display means for reproducing a video signal sent from a video source,
A playback speed conversion unit that is provided between the video source and the display unit and changes a playback speed of an image displayed on the display unit, and a playback image size according to a speed increase / decrease amount in the playback speed conversion unit. And an image size control unit for enlargement / reduction.

  5. A display method for a variable speed display device according to claim 4, wherein a display means for reproducing a video signal sent from a video source, an image provided between the video source and the display means and displayed on the display means. A display method of a variable speed display device comprising: a playback speed conversion unit that varies a playback speed of the playback speed, wherein the playback image size is reduced according to an increase in the playback speed in the playback speed conversion unit. And

Embodiments of a variable speed display device and a display method thereof according to the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a schematic configuration of a recording / reproducing apparatus provided with a variable speed display device according to an embodiment of the present invention. FIG. 2 is a block diagram showing a configuration of the variable speed display device shown in FIG. 3 is a block diagram showing details of the reproduction speed conversion unit shown in FIG.

  The variable speed display device 100 according to the present embodiment can be suitably used for a recording device that can automatically change the speed according to the content and reproduce it in order to view the content in a short time. The reproduction apparatus 200 is employed. The recording / reproducing apparatus 200 is, for example, a DVD recorder or a blu-ray recorder with a built-in HDD (hard disk), and the video signal input to the receiving circuit 13 via the antenna 11 is stored in the HDD 17 via the encoder 15. The map data detected by the scene change detection unit 19 and the audio / video detection unit 21 is also stored in the HDD 17. The reading of the image from the HDD 17 is controlled by the variable speed display device 100.

  As shown in FIG. 2, the variable speed display device 100 includes a display means (a display device such as a TV) 23, a reproduction speed conversion unit 25, an image size control unit 27, an auxiliary information display unit 29, and a mark operation control. The unit 31 and the click sound generation unit 32 are provided as main components. Therefore, the video signal accumulated in the HDD 17 from the receiving circuit 13 is displayed on the display unit 23 via the reproduction speed conversion unit 25.

  The playback speed conversion unit 25 converts the video signal sent from the HDD 17 based on the map data sent from the HDD 17 and sends it out. The reproduction speed conversion unit 25 controls reading of an image from the HDD 17 based on a control signal from a control unit (not shown). Instead of the HDD 17 (hard disk), other storage devices such as a memory made of semiconductor elements, an optical disk, and a magneto-optical disk may be used.

  The playback speed conversion unit 25 further includes an image signal input unit 33, a section determination unit 35, a signal processing unit 37, an image memory 39, a variable speed calculation unit 41, and an image signal output unit 43, as shown in FIG. ing. The image signal input unit 33 includes, for example, an amplification unit, an A / D conversion unit, and a frame memory.

  The image size control unit 27 enlarges or reduces the reproduction image size according to the speed increase / decrease amount in the reproduction speed conversion unit 25 (that is, based on the speed conversion data). The auxiliary information display unit 29 makes it possible to display a mark such as a character on the display means 23. The mark operation control unit 31 varies the mark operation speed according to the speed increase / decrease amount in the reproduction speed conversion unit 25.

  When the variable speed playback mode is selected, the video signal read by the HDD 17 is sent to the playback speed conversion unit 25. The reproduction speed conversion unit 25 analyzes the input video signal and processes the input video signal according to the analysis result. Also, the reproduction speed of the video signal is calculated, and a control signal corresponding to the calculated reproduction speed is generated. This control signal is input to the image size control unit 27, auxiliary information display unit 29, mark operation control unit 31, and click sound generation unit 32.

Next, the display operation by the variable speed display device 100 will be described.
The signal input to the image signal input unit 33 is amplified, converted to a digital signal, and stored in the frame memory. The output of the image signal input unit 33 is sent to the section determination unit 35 and the signal processing unit 37. The section determination unit 35 determines whether the input signal is a voice section or a silent section. In the section determination unit 35, for example, it is determined whether the audio data for one frame stored in the frame memory of the image signal input unit 33 is a silent section or a voice section. The signal processing unit 37 processes the input signal sent from the image signal input unit 33. That is, the current playback speed is subjected to time axis compression processing at a predetermined compression rate.

  The output of the signal processing unit 37 is temporarily stored in the image memory 39 and then sent to the image signal output unit 43 for output. The digital signal sent to the image signal output unit 43 may be converted into an analog signal or output as a digital signal.

  Here, when the reproduction speed conversion control is instructed, the video signal once stored in the image memory 39 is subjected to variable speed processing by the variable speed calculation unit 41. The playback image size is enlarged or reduced by the image size control unit 27 according to the speed calculation value from the variable speed calculation unit 41, that is, the playback speed. Here, the phenomenon that the viewing angle is narrowed during high-speed running is used, and the playback image size is reduced in accordance with the increase in playback speed. Therefore, it is possible to recognize natural speed by utilizing human physiological phenomena. This makes it possible to easily grasp the reproduction speed without displaying a mark or the like corresponding to the reproduction speed and without reducing the user's attention. In addition to reducing the image size, processing for blurring the outer periphery of the screen may be performed.

  At this time, an instruction such as a character can be displayed on the display means 23 by inputting an instruction to the auxiliary information display unit 29 from a control unit (not shown). In this case, the mark operation speed can be varied by the mark operation control unit 31 in accordance with the image reproduction speed. Note that the display of the character is not an essential requirement, and the user can grasp the slowness of the reproduction speed only by the enlargement / reduction of the reproduction image size.

  In addition, as a specific display method of the variable-speed display device 100, a mark whose replay speed can be recognized can be displayed in the margin generated by the reduction of the replay image size. Characters such as rabbits and cheetahs appear as this mark. When the reproduction image size is reduced according to the increase amount of the reproduction speed, a margin is generated in the image display portion of the display means 23. This margin is used effectively, and a mark for recognizing the playback speed is displayed. In addition, since the mark is not displayed on the reproduced image itself, it does not interfere with the visual recognition of the image, and the attention at the time of gazing at the image does not decrease.

  Further, it is possible to display a mark such as a character at a speed corresponding to the playback speed. For example, when the reproduction speed increases, a bar graph is displayed in an expanded manner, the globe rotates at a high speed according to the increase speed, or an animal character that is a mark runs fast according to the increase speed. As a result, the visibility of knowing the current playback speed is further improved as compared with a still image such as a simple bar graph.

  Furthermore, a playback sound that rhythms at a speed corresponding to the playback speed may be output together with the playback of the video signal. In this case, since the click sound output in the sound part may be an obstacle to the user, it is set as the output in the silent part. As for the sound / silence, the detection signal obtained by the section determination unit 35 can be input to the click sound generation unit 32. As a result, in addition to the size of the playback image and the visual recognition effect of the mark displayed in the margin generated by it, the playback sound that changes according to the playback speed is output, which also affects the recognition by hearing. Thus, the change in the reproduction speed can be grasped more easily. Note that the sound output in this case may be a sound that plays rhythmic music at a high speed in addition to the click sound.

  Therefore, according to the variable speed display device 100, the playback speed conversion unit 25 that varies the playback speed of the image displayed on the display means 23, and the playback image size is enlarged or reduced according to the speed increase / decrease amount in the playback speed conversion unit 25. An image size control unit 27 to be displayed, an auxiliary information display unit 29 that enables display of the mark on the display means, and a mark operation control unit 31 that varies the operation speed of the mark in accordance with the speed increase / decrease amount in the reproduction speed conversion unit 25 Therefore, it is possible to enlarge / reduce the playback image size according to the playback speed of the image, display a mark such as a character in the margin of the display means generated thereby, and further change the operation speed of the mark to the image speed. It can be made variable according to the playback speed. As a result, it is possible to prevent inconvenience and discomfort due to the inability to grasp the playback speed during variable speed playback in the recording / playback apparatus, and to improve user convenience and comfort.

  In addition, according to the display method of the variable speed display device 100, the playback image size is reduced according to the increase in the playback speed in the playback speed conversion unit 25. In particular, the user can be made aware of changes in the playback speed without displaying a mark or the like corresponding to the playback speed. As a result, it is possible to improve the convenience and comfort of the user during variable speed playback without reducing the attention during image gaze.

  In addition, when performing variable speed playback, the user can generally grasp the playback speed when the voice is output by speech speed conversion or the like. In addition, since this is a part where the user wants to focus on viewing the content, providing other information is more likely to interfere with visual recognition. Therefore, the sound output operation for grasping the variable speed reproduction is basically performed on the silent reproduction unit. However, what is displayed on the screen can also be operated in a sound part.

As described above in detail, the variable speed display device 100 according to the embodiment of the present invention is provided between the display unit 23 for reproducing the video signal sent from the video source, and the video source and the display unit 23. A reproduction speed conversion unit 25 that varies the reproduction speed of the image displayed on the display unit 23, an image size control unit 27 that enlarges / reduces the reproduction image size according to the speed increase / decrease amount in the reproduction speed conversion unit 25, and the display unit 23 An auxiliary information display unit 29 that enables display of the mark, and a mark operation control unit 31 that varies the operation speed of the mark in accordance with the speed increase / decrease amount in the reproduction speed conversion unit 25 are provided.
As a result, the playback image size can be enlarged or reduced in accordance with the playback speed of the image, and a mark such as a character can be displayed in the margin of the display means 23 generated thereby. It can be varied according to the playback speed.
As a result, it is possible to prevent inconvenience and discomfort due to the inability to grasp the playback speed during variable speed playback on the recording / playback apparatus 200 such as a DVD recorder or a blu-ray recorder, and to improve user convenience and comfort. it can.

  Further, the display method of the variable speed display device according to the embodiment of the present invention is the display method of the variable speed display device 100 described above, and the playback image size according to the increase amount of the playback speed in the playback speed conversion unit 25. Therefore, it is possible to allow the user to grasp the change in the reproduction speed without displaying a mark or the like corresponding to the reproduction speed by utilizing the phenomenon that the viewing angle becomes narrow during high-speed driving. As a result, it is possible to improve the convenience and comfort of the user during variable speed playback without reducing the attention during image gaze.

  It should be noted that if a compressed image by digital data is played back at a high speed of a certain level or more, it becomes discontinuous image playback, and it is difficult to grasp the playback speed even when viewing the display of the playback image. Therefore, the variable speed display device and its display method of the present invention are effective not only when the playback speed changes automatically but also when the playback speed changes according to a user instruction.

It is a block diagram showing schematic structure of the recording / reproducing apparatus provided with the variable speed display apparatus which concerns on embodiment of this invention. It is a block diagram showing the structure of the variable speed display apparatus shown in FIG. FIG. 3 is a block diagram illustrating details of a reproduction speed conversion unit illustrated in FIG. 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 23 Display means 25 Playback speed conversion part 27 Image size control part 29 Auxiliary information display part 31 Mark operation | movement control part 100 Variable speed display apparatus

Claims (7)

Display means for reproducing a video signal sent from a video source;
A playback speed conversion unit that is provided between the video source and the display unit and varies a playback speed of an image displayed on the display unit;
An image size control unit that enlarges or reduces the playback image size in accordance with the speed increase / decrease amount in the playback speed conversion unit;
A variable speed display device comprising:   The variable speed display device according to claim 1, further comprising an auxiliary information display unit that enables the display unit to display a mark.   The variable speed display device according to claim 2, further comprising a mark operation control unit configured to vary an operation speed of the mark in accordance with a speed increase / decrease amount in the reproduction speed conversion unit. Display means for playing back a video signal sent from a video source, and a playback speed converter provided between the video source and the display means for changing the playback speed of an image displayed on the display means. Display method for a variable speed display device,
A display method of a variable speed display device, wherein the playback image size is reduced according to an increase amount of a playback speed in the playback speed conversion unit.   5. The display method of a variable speed display device according to claim 4, wherein a mark capable of recognizing a reproduction speed is displayed in a margin generated by reducing the reproduction image size.   6. The display method of a variable speed display device according to claim 5, wherein the mark is displayed in motion at a speed corresponding to a reproduction speed.   The display method of the variable speed display device according to any one of claims 4 to 6, wherein a playback sound ticking at a speed corresponding to the playback speed is output together with the playback of the video signal.

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