JPH11203845A - Device and method for reproducing information and providing medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a user to surely retrieve feature points by reproducing information recorded on a recording medium, extracting the feature points information feom the reproduced signals and switching a reproducing mode based on the feature point information. SOLUTION: When a system controller 2 receives a control signal corresponding to high speed reproducing from a reproducing control signal inputting section 3, a disk head control section 4 is controlled by the controller 2, a recording medium 7 is rotated at a higher speed than a normal reproducing speed to reproduce the signals and the signals are outputted and displayed to a display. Then, when a reproducing point arrives within a range between a prescribed position only prior to a prescribed time from a feature point and the feature point, it is discriminated that the feature point approaches the section 4 is controlled, signals are reproduced from the medium 7 at a speed slower than the normal reproducing speed and the signals are outputted and displayed on the display. Thus, a user easily recognizes whether the feature point is a desired video or not.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information reproducing apparatus, an information reproducing method, and a providing medium, and more particularly, to switching between reproduction modes based on characteristic points of information to be reproduced, so that characteristic points can be reliably searched. The present invention relates to an information reproducing apparatus and method, and a providing medium.

[0002]

2. Description of the Related Art A recording / reproducing apparatus which records a video signal or an audio signal on a recording medium such as an optical disk or a semiconductor memory and reproduces the video signal or the audio signal is also referred to as a non-linear recording / reproducing apparatus. And can directly access any address of the recording medium,
Random access is possible, and various recording and reproduction processes can be performed.

For example, when a user records and reproduces a television broadcast after recording it on a recording medium, the user has a feature in the broadcast without performing a high-speed reproduction process for reproducing a video at a higher speed than usual. Points (hereinafter referred to as feature points),
For example, a search may be made for a start or end of a commercial message (hereinafter abbreviated as CM), a point at which a scene is changed, or a point at which a telop is inserted, and the subsequent video may be normally reproduced. The playback device is adapted to quickly and accurately cope with such processing.

[0004] Non-linear recording / reproducing apparatuses have been studied particularly in a feature point retrieval system. For example, "Tada, Kijima" A Study on CM Detection Method for TV Broadcasting ", Technical Report of the Society of Image Information and Television Engineers, ITE Technical
Report Vol.21, No.23, pp.19-23 "proposes a method for detecting a program material and a CM material from characteristics of an audio signal and a video signal. "Kaneko, Hori," High-speed Cut Detection from MPEG Video Using Motion Vector Codec ", IEICE Technical Report, PRMU96-100 (1996-11), pp. 55-62"
g Picture Exoerts Group) A method of detecting a scene change point at high speed based on the code amount of a motion vector of a bit stream has been proposed. "Sato, Niikura et al.," MPEG2
"Effective Efficiency Detection of Cut Points and Telops from Video", IEICE Technical Report, PRMU96-99 (1996-11), pp.47-54 Examine the field, detect scene changes quickly, and
By examining the frequency of occurrence of Coded macro books,
A method for detecting a telop insertion point at high speed has been proposed.

[0005]

However, the above-mentioned features are often short video or audio.
Although the non-linear recording / reproducing apparatus can search these characteristic points at high speed, when the user actually operates the recording / reproducing apparatus and searches for a desired characteristic point while reproducing at high speed, the user misses the characteristic points. Or
There is a problem that a desired video or audio cannot be obtained due to a delay in operation of the recording / reproducing apparatus.

[0006] The present invention has been made in view of such a situation, and enables a user to reliably search for a feature point by switching a reproduction mode in accordance with the feature point.

[0007]

According to a first aspect of the present invention, there is provided an information reproducing apparatus for reproducing information recorded on a recording medium, and extracting characteristic point information from a signal reproduced from the recording medium. Means, and switching means for switching the reproduction mode based on the feature point information.

According to a second aspect of the present invention, there is provided an information reproducing method for reproducing information recorded on a recording medium, extracting characteristic point information from a signal reproduced from the recording medium, and extracting characteristic point information. And a switching step of switching the reproduction mode based on

According to a third aspect of the present invention, there is provided the providing medium, wherein: a reproducing step of reproducing information recorded on the recording medium; an extracting step of extracting characteristic point information from a signal reproduced from the recording medium; And a switching step of switching a reproduction mode based on the computer program.

[0010] The information reproducing apparatus according to claim 1, and claim 2.
In the information reproducing method described in the item (3) and the providing medium described in the item (3), the information recorded on the recording medium is reproduced, and the characteristic point information is extracted from the signal reproduced from the recording medium. The reproduction mode is switched based on the reproduction mode.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below. In order to clarify the correspondence between each means of the invention described in the claims and the following embodiments, each means is described. When the features of the present invention are described by adding the corresponding embodiment (however, an example) in parentheses after the parentheses, the result is as follows. However, of course, this description does not mean that each means is limited to those described.

[0012] An information reproducing apparatus according to claim 1 is a reproducing means for reproducing information recorded on a recording medium.
A reproduction processing unit 6 in FIG. 1, extraction means for extracting feature point information from a signal reproduced from a recording medium (for example, the system controller 2 in FIG. 3), and switching for switching a reproduction mode based on the feature point information (For example, the system controller 2 in FIG. 3).

Next, an embodiment of an information reproducing apparatus to which the present invention is applied will be described with reference to FIG. In FIG. 1, a recording control signal input unit 1 is operated when instructing the system controller 2 to perform a recording process, and a reproduction control signal input unit 3 is operated when instructing the system controller 2 to perform a reproducing process. The system controller 2 controls the disk head control unit 4, the recording processing unit 5, and the reproduction processing unit 6 based on a control signal from the recording control signal input unit 1 or the reproduction control signal input unit 3, and performs recording processing and reproduction. A predetermined process such as a process is executed.

The recording processing unit 5 performs a predetermined process on the video signal and the audio signal transmitted through a predetermined transmission path, and supplies the processed signal to the recording medium 7. The disk head control unit 4 controls a recording medium 7 made of, for example, an optical disk, and records a signal from the recording processing unit 5 at a predetermined address of the recording medium 7 or reads a predetermined signal from the recording medium 7. And supplies it to the reproduction processing unit 6.

The reproduction processing section 6 processes and outputs a reproduction signal supplied from the recording medium 7.

The video signal or audio signal reproduced by the reproduction processing unit 6 can be input to the recording processing unit 5.

The recording processing section 5 is configured as shown in FIG. For example, a video tape recorder (not shown)
The video signal output from the video signal processing device 10, the video signal output from a video camera (not shown), or the video signal input via an antenna (not shown) Input to the camera signal processing device 11 or the tuner signal processing device 12,
A predetermined process is performed. Also DVD
(Digital Video Disc) or the compressed digital signal reproduced from the DVD system decompression device 13,
Alternatively, the data is input to the compression format converter 14 and subjected to predetermined processing.

The signal switching device 21 of the video signal recording unit 20
Is configured to select a predetermined video signal from signals from the video signal processing device 10, the video camera signal processing device 11, and the tuner signal processing device 12, and to output the selected video signal to the A / D conversion device 22. The A / D conversion device 22 performs A / D conversion of a signal from the signal switching device 21 and outputs the signal to the signal switching device 23. Signal switching device 2
Reference numeral 3 denotes a predetermined signal selected from a signal from the A / D conversion device 22, a digital video signal directly input from a device not shown, or a video signal output from the DVD decompression device 13, and a band compression device 24. And feature point extraction processing device 2
5 is output.

The band compression device 24 quantizes the signal from the signal switching device 23 so that the recording buffer 27 does not overflow or underflow.
g Picture Experts Group) or JPEG (Joint Photograp
Hic Experts Group), band-compressed, and output to the signal switching device 26. The band compression device 24 also outputs information corresponding to the quantization amount to the feature point extraction processing device 25. The signal switching device 26 includes a video signal from the band compression device 24 and the compression format conversion device 14.
, A predetermined signal is selected from the video signals output from the recording buffer 27 and output to the recording buffer 27. The recording buffer 27 supplies a signal obtained from the signal switching device 26 to a recording data processing device 28 via a data bus 29.

For example, an audio signal reproduced and output from a tape recorder (not shown), a microphone (not shown)
Audio signal or an audio signal input via an antenna (not shown) such as a television broadcast, respectively.
1 or input to the tuner signal processing device 12 to perform predetermined processing.

The signal switching device 41 of the audio signal recording unit 40
Is configured to select a predetermined audio signal from signals from the audio signal processing device 30, the microphone signal processing device 31, or the tuner signal processing device 12, and output the selected audio signal to the A / D conversion device. The A / D converter 42 A / D converts the signal from the signal switching device 41 and outputs the signal to the signal switching device 43. Signal switching device 4
Reference numeral 3 denotes a band compressor 44 which selects a predetermined signal from a signal from the A / D converter 42, a digital audio signal directly input from a device not shown, or an audio signal output from the DVD system decompressor 13. And feature point extraction processing device 2
5 is output.

The band compression unit 44 quantizes the signal from the signal switching unit 43 so that the recording buffer 47 does not overflow or underflow, and performs band compression based on, for example, the MPEG audio or AC-3 system. The signal is output to the signal switching device 46. The band compression device 44 also outputs a signal corresponding to the quantization amount of the audio signal to the feature point extraction processing device 25. The signal switching device 46 selects a predetermined signal from the signal from the band compression device 44 and the audio signal from the compression format conversion device 14, and outputs the selected signal to the recording buffer 47. The recording buffer 47 transmits the signal obtained from the signal switching device 46 to the recording data processing device 28 via the data bus 29.
To be supplied.

The digital communication processing device 48 includes, for example,
Receives information and digital broadcasts from the Internet,
A predetermined process is performed and transmitted to the feature point extraction processing device 25.

The characteristic point extraction processing device 25 relates to characteristic points from signals from the signal switching device 23, the signal switching device 43, the band compression device 24, the band compression device 44, the digital signal processing device 48, or the tuner signal processing device 12. Information (for example, the address of a feature point) is extracted and the data bus 2
9 to a recording data processing device 28.

The recording data processing unit 28 multiplexes the video signal from the video signal recording unit 20, the audio signal from the audio signal recording unit 40, and the information on the feature points from the feature point extraction processing unit 25 as necessary. Is further converted into a predetermined recording format corresponding to the recording medium 7,
To be supplied. Information on the feature points is recorded, for example, in the TOC (Table Of Contents) of the recording medium 7.

The system controller 2 supplies information relating to predetermined feature points to the feature point extraction processing device 25, and also controls the video signal recording unit 20, the recording data processing device 28, and the audio signal recording unit 40 to a disk head control unit. 4 is controlled.

Of the characteristic points of the video signal and the audio signal,
For example, information on the start point of a program (program), recording start point, recording pause release point, recording date change point, and still image recording start point is supplied from the system controller 2 to the feature point extraction processing device 25. It has been done. Also, for example, a CM start or end point, a telop insertion point,
And information on the scene change point is transmitted to the signal switching device 23.
Alternatively, the feature point extraction processing device 25 extracts the signal from the signal switching device 43. Further, for example, the feature point extraction processing device 25 extracts information on the highlight scene start point from a signal from the digital communication processing device 48.

Next, FIG. 3 shows an example of the configuration of the reproduction processing section 6. The signal supplied from the recording medium 7 is reproduced by a reproduction data processing device 50, for example, EFM (Eight to Fourteen modula).
) demodulated and processed to correspond to a predetermined reproduction format, and further divided into a video signal, an audio signal, and a compressed digital signal. Reproduction data processing device 5
The video signal from 0 is divided into signals for two channels, CH1 and CH2, and input to the reproduction buffers 61-1 and 61-2 of the video signal reproduction unit 60 via the data bus 51, respectively. Has been made.

The reproduction buffer 61-1 converts the signal obtained from the reproduction data processing device 50 into a band extender 62-1.
To be supplied. Band extender 62-1
Expands the signal input from the reproduction buffer 61-1 based on, for example, the MPEG or JPEG method and outputs the signal to the signal generator 63.

A reproduction buffer 61-2 and a band extender 62-2 for CH2 are provided for the reproduction buffer 61-1 and the band extender 62-1 for CH1.

The signal generating device 63 includes a band extending device 62-
1 and a signal output from the band extender 62-2, a predetermined signal is generated, and the D / A converter 64-1 is generated.
And output to the DVD system compression device 65. The D / A conversion device 64-1 performs D / A conversion of the signal input from the signal generation device 63, and performs a reproduction signal output device 6
6-1 or output to a device not shown. The reproduction signal output device 66-1 is a D / A conversion device 6.
The signal from 4-1 is subjected to, for example, chroma encoding, and output to a device (not shown).

The output of the band extender 62-2 of CH2 is
The same processing is performed by the D / A conversion device 64-2 and the reproduction signal output device 66-2 corresponding to the D / A conversion device 64-1 and the reproduction signal output device 66-1 of the CH1, and the output is performed. It has been made.

The audio signal from the reproduction data processing device 50 is divided into signals for two channels, CH1 and CH2, and the reproduction buffers 71-1 and 71- of the audio signal reproduction unit 70 via the data bus 51. 2, respectively.

The structure of the reproduction buffer 71-1 to the reproduction signal output device 76-2 in the audio signal reproduction unit 70 is the same as that of the reproduction buffer 61-1 in the video signal reproduction unit 60.
Since the configuration of the reproduction signal output device 66-2 is basically the same as that of the reproduction signal output device 66-2, the description is omitted.

Next, a processing procedure when the video information and the audio signal recorded on the recording medium 7 are reproduced together with the information on the characteristic points will be described with reference to the flowchart shown in FIG.

First, in step S1, the system controller 2 reads out the TOC of the information to be reproduced.
The reading of the TOC is executed when the disk is inserted into the apparatus for the first time, and the read TOC is stored in a memory inside the system controller 2. Next, in step S2, the system controller 2 waits until a control signal for instructing a reproduction process is input from the reproduction control signal input unit 3, and when there is an input, next, in step S3, the system controller 2 Determines whether the control signal instructing the reproduction processing corresponds to normal reproduction or high-speed reproduction. What is normal playback?
This means a process of reproducing a video at a speed (1 × speed) at which a user can check the content of the video, and high-speed reproduction means reproducing a signal at a speed higher than normal reproduction. Therefore, in the high-speed reproduction, a video whose content is difficult for the user to confirm is reproduced.

If it is determined in step S3 that the control signal corresponds to high-speed reproduction, the process proceeds to step S4,
In 4, the high-speed reproduction process is executed. here,
The system controller 2 controls the disk head control unit 4 to rotate the recording medium 7 at a higher speed than in the case of normal reproduction, reproduce a signal therefrom, and reproduce the data, the reproduction data processing device 50, the video signal reproduction unit 60, The audio signal reproducing unit 70 is controlled to output and display the signal supplied from the recording medium 7 on a display (not shown).

Next, in step S5, the system controller 2 determines whether or not a control signal for canceling high-speed playback has been input from the playback control signal input unit 3.
If the input of the control signal for canceling the high-speed reproduction is not detected, the process proceeds to step S6.

Next, in step S6, the system controller 2 determines whether a feature point is approaching. The system controller 2 determines that the feature point is approaching, for example, when the reproduction point reaches a predetermined position before the feature point by a predetermined time and within a range between the feature points.

If it is determined in step S6 that the feature points are not approaching, the process returns to step S4, and high-speed reproduction is continued. If it is determined in step S6 that the feature points are approaching, the process proceeds to step S7.

Next, in step S7, the system controller 2 controls the disk head control unit 4 to reproduce the signal from the recording medium 7 at a speed lower than the normal reproduction, and the reproduction data processing device 50 and the video signal reproduction unit 60 and the audio signal reproducing unit 70 to output and display them (low speed reproduction). Here, by reproducing the feature points at a low speed, the user can easily recognize whether or not the feature point is a desired video. For example, when a user plays a recorded television broadcast,
When the reproduction control signal input unit 3 is operated to set a CM end point as a feature point, low-speed reproduction is executed immediately before each CM end.

In step S7, the reproduction can be paused instead of the low-speed reproduction.

Next, in step S8, the system controller 2 determines whether or not a control signal for canceling high-speed playback has been input from the playback control signal input unit 3.

If it is determined in step S8 that the high-speed reproduction has not been canceled, the process proceeds to step S9. For example, if the video reproduced at a low speed and after a certain CM is not the desired video, the user does not cancel the high-speed reproduction. In step S9, the system controller 2 determines whether the low-speed reproduction has been continued for a predetermined time. If the low-speed reproduction time has not reached the predetermined time, the process returns to step S7, and the low-speed reproduction is continued. If the low-speed reproduction is continued for a predetermined time without inputting the control signal for canceling the high-speed reproduction, the process returns to step S4, and the high-speed reproduction is executed again.

If the input of the control signal for canceling the high-speed reproduction is detected in step S8, the process proceeds to step S10, where the system controller 2 detects the characteristic point reproduced just before the control signal is input, and detects the characteristic point. The point is set as a reproduction start point, and normal reproduction is executed in step S11.

If the input of the control signal for canceling the high-speed playback is detected in step S5, that is, if the user performs a predetermined operation for canceling the high-speed playback, the process proceeds to step S12. In step S12, when the control signal for canceling the high-speed playback is input, the system controller 2
The closest feature point is detected, and it is determined whether the feature point exists in a predetermined range.

For example, a predetermined range is set as a distance on the address of the recording medium 7, and the system controller 2 calculates a difference between a signal reproduced at the time when the control signal is input and a feature point on the address. It is determined whether or not it exceeds a predetermined address distance, and a predetermined range is set as time, and a time when a control signal for canceling high-speed reproduction is input, and a time when a feature point is reproduced or reproduced. Is calculated, and it is determined whether or not the difference exceeds a predetermined time.

If it is determined in step S12 that the closest feature point does not exist in the predetermined range, the process returns to step S11, and from the point in time when the control signal for canceling the high-speed reproduction is input,
Normal reproduction is performed. If it is determined in step S12 that the closest feature point exists in the predetermined range, the process proceeds to step S13, and normal reproduction is performed from the feature point detected in step S12.

FIGS. 5 to 10 show the correspondence between the characteristic points of the information to be reproduced and the operation of the reproduction control signal input unit 3 by the user.
5 is a timing chart showing timings at which a reproduction mode (normal reproduction, high-speed reproduction, or low-speed reproduction) is switched. Next, with reference to these, the procedure of switching the reproduction mode will be specifically described.

FIG. 5 shows that the user starts normal reproduction of the recording medium 7 at time T1, starts high-speed reproduction at time T2, and releases high-speed reproduction at time T6 (time at which the characteristic point P2 is reproduced). 6 is a timing chart when the reproduction control signal input unit 3 is operated so as to perform normal reproduction thereafter.

In this case, the reproduction mode becomes the normal reproduction mode at time T1 (step S11), and becomes the high-speed reproduction mode (step S4) at time T2. At time T3, when it is determined that the feature point (the feature point P1 in this case) is approaching (is a nearby point) (step S6), the high-speed playback is switched to the low-speed playback mode. If the feature point P1 is not a video desired by the user, for example, a desired CM end point, the reproduction control signal input unit 3 is not operated and the low-speed reproduction is performed for a predetermined time _TL from time T3 to time T4. Are continued (steps S7 to S9).

At time T4, high-speed reproduction is executed again (step S4), and continues until time T5 when the characteristic point P2 approaches (until a nearby point is detected). At time T5, the high-speed reproduction is switched to the low-speed reproduction. The user
When the feature point P2 is recognized as a desired image, the time T6
In, the user operates the reproduction control signal input unit 3 and
The high-speed reproduction is canceled (step S8). From this,
The low-speed playback mode is switched to the normal playback mode (step S11). At this time, the reproduction start point is set to the characteristic point P2 reproduced immediately before the input of the control signal (step S10).

FIG. 6 is a timing chart in the case where the reproduction control signal input unit 3 is operated in the same manner as in FIG. 5, but in step S6, not the point near the characteristic point but the characteristic point itself is reached. 6 is a timing chart in a case where it is determined whether or not this is the case.

In FIG. 7, the same operation as in the case of the timing chart shown in FIG. 6 is performed until time T4 (however, here, it is assumed that the characteristic point P2 does not exist).
10 is a timing chart when the user operates the reproduction control signal input unit 3 to cancel high-speed reproduction.

At time T10, when the high-speed reproduction is released (step S5), the closest feature point (in this case, the characteristic point P1) is detected, and the high-speed reproduction of the characteristic point P1 is released. for the signal P _S which has been reproduced when the, within a predetermined range L (in this case, the difference between the address of the recording medium 7) whether it is is determined (step S12). In this case, since the feature point P1 is within the predetermined range L, normal reproduction is performed from the feature point P1 (step S1).
13, S11).

Even if the closest feature point has not been reproduced yet when the control signal for releasing the high-speed reproduction is input, if the release timing is within a predetermined range as shown in the timing chart of FIG. Normal reproduction is started from the closest feature point P2.

In the timing charts shown in FIGS. 7 and 8, the characteristic points are present in a predetermined range based on the difference between the nearest characteristic point and the address of the signal reproduced at the time when the high-speed reproduction is released. Has been determined. On the other hand, the timing chart shown in FIG. 9 shows a case where a predetermined range is set to time.

In the timing chart shown in FIG. 9, it is determined whether or not feature point P1 has been reproduced within a predetermined time T _M from time T10 at which high-speed reproduction was canceled. In this case, since the feature point P1 is within the range, normal reproduction is started from the feature point P1.

According to the timing charts shown in FIGS. 7 to 9, when a feature point is reached, high-speed reproduction is switched to low-speed reproduction. However, as shown in FIG. 10, the video of the feature point is reproduced as a still image. (Freeze).

Next, the video signal recorded on the recording medium 7 is a GOP (Group of Picture) such as MPEG.
FIG. 11 shows a timing chart in the case of having the structure.

P5 of GOP (n + 7) (5 of P picture)
GOPn to GO in which the feature point exists in the (th frame)
When the stream composed of P (n + 11) is reproduced at high speed, when the high-speed reproduction is released at time T _P , reproduction is started from the I picture of the GOP of the closest feature point. In this case, normal reproduction has started from I2 (the second frame of the I picture) of GOP (n + 7).

As a providing medium for providing a user with a computer program for performing the above processing, there are provided:
In addition to recording media such as magnetic disks, CD-ROMs, and solid-state memories, communication media such as networks and satellites can be used.

[0063]

According to the information reproducing apparatus of claim 1, the information reproducing method of claim 3, and the providing medium of claim 4, feature point information is extracted from predetermined information, and And the feature point information are combined, and the reproduction method is switched based on the feature point information, so that the feature point can be reliably searched.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration example of an information reproducing apparatus to which the present invention has been applied.

FIG. 2 is a block diagram illustrating a configuration example of a recording processing unit 5;

FIG. 3 is a block diagram illustrating a configuration example of a reproduction processing unit 6.

FIG. 4 is a flowchart illustrating a processing procedure when a video signal recorded on a recording medium 7 is reproduced.

FIG. 5 is a timing chart showing switching timings of a reproduction mode.

FIG. 6 is another timing chart showing the switching timing of the reproduction mode.

FIG. 7 is another timing chart showing the switching timing of the reproduction mode.

FIG. 8 is another timing chart showing the switching timing of the reproduction mode.

FIG. 9 is another timing chart showing the switching timing of the reproduction mode.

FIG. 10 is another timing chart showing the switching timing of the reproduction mode.

FIG. 11 is another timing chart showing the switching timing of the reproduction mode.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Recording control signal input part, 2 System controller, 3 Reproduction control signal input part, 4 Disk head control part, 5 Recording processing part, 6 Reproduction processing part, 7 Recording medium, 10 Video signal processing device, 11 Video camera signal processing device , 12 tuner signal processor,
Reference Signs List 20 video signal recording unit, 21 signal switching device, 22
A / D converter, 23 signal switching device, 24 band compression device, 25 feature point extraction processing device, 26 signal switching device, 27 recording buffer, 28 recording data processing device, 30 audio signal processing device, 31 microphone signal processing device , 40 audio signal recording unit, 41
Signal switching device, 42 A / D converter, 43 signal switching device, 44 band compression device, 46 signal switching device, 47 recording buffer, 48 digital communication processing device, 50 playback data processing device, 60 video signal playback unit, 61 Reproduction buffer, 62 band extender, 63 signal reproducer, 64 D / A converter, 65 DVD method compressor, 66 reproduced signal output device, 70 audio signal reproducer, 71 reproduction buffer, 72 band extender, 73 signal Playback equipment,
74D / A converter, 76 playback signal output device

Claims (3)

[Claims] A reproducing unit that reproduces information recorded on a recording medium; an extracting unit that extracts feature point information from a signal reproduced from the recording medium; and a reproduction mode based on the feature point information. An information reproducing apparatus, comprising: switching means for switching. 2. A reproducing step of reproducing information recorded on a recording medium, an extracting step of extracting feature point information from a signal reproduced from the recording medium, and a reproducing mode based on the feature point information. And a switching step of switching. 3. A reproducing step of reproducing information recorded on a recording medium; an extracting step of extracting feature point information from a signal reproduced from the recording medium; and a reproducing mode based on the feature point information. Providing a computer program comprising a switching step of switching.