JPH11273182A - Recording and reproducing device and recorded information reproducing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a highly accurate reproduction from a detection-specified position by compensating the delay between the reaction delay time of a user and the reaction delay time of a device when a reproducing operation is performed by detection- specifying a reproduction starting position visually in a high speed reproduction and transitting to normal reproduction. SOLUTION: The reaction delay time of a user and the reaction delay time of a device in the detection-specifying of a video at the time of a high reproduction are stored in a microcomputer 17 and it is made possible to execute the reproducing operation of the recorded information in a disk-shaped recording medium 22 by calculating a reproduction starting position posterior to a transistion with the microcomputer 17 based on the additional calculation value of the reaction delay time of the user and the reaction delay time of the device and a high speed reproduction speed at the time of a transition from a forward or a backward high speed reproduction to a normal reproduction, by starting the reproducing of the information recorded in the recording medium 22 from the calculated reproduction starting position and by compensating the delay between the reaction delay time of the user and the reaction delay time of the device from the picture position specified by the user and by specifying an accurate reproduction starting position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus and a method for reproducing stored information, and more particularly to a recording / reproducing apparatus for correcting a reproduction start position and a method for reproducing stored information when transitioning from a high-speed reproducing operation to a normal reproducing operation. Reproduction method.

[0002]

2. Description of the Related Art Video recording / reproducing apparatuses were originally intended for recording television programs, but with the spread of rental videos, movies can be reproduced from video software and viewed at home. Furthermore, due to the miniaturization of the image pickup device, a recording / reproducing apparatus having a video camera function has been widely used. In this type of recording / reproducing apparatus, when reproducing a video recorded on a recording medium, for example, sometimes it is desired to continue the reproduction from the last position of the previously reproduced video, for example. In such a case, the recording / reproducing apparatus is driven to reproduce the video from the recording medium at high speed,
While monitoring a high-speed reproduced image, a video position at which reproduction is desired to be started is detected and specified, and reproduction is performed at a normal reproduction speed from the detected and specified video position.

[0003]

In the conventional recording / reproducing apparatus as described above, when an image position at which reproduction is to be started by high-speed reproduction is detected and designated, as shown in FIG. (High-speed playback) is performed, the user detects an image whose playback is desired to be resumed at point B, and designates the operation key by pressing the operation key. After the reaction delay time Tu has elapsed, the operation key is pressed by the user at point C. The recording / reproducing apparatus changes the mode to the normal reproduction by the user's operation. However, it is necessary to perform a check confirmation process of the operation key input, and the transition process is actually started because of a device reaction delay. At the point D after the time Td, the transition processing is completed and the image display in the normal reproduction mode is performed after reaching the point E.

[0004] The same applies to the case of transition from the high-speed playback mode in the reverse direction to the normal playback mode. As shown in FIG.
After the user detects the target image at the point B and presses the operation key, the recording / reproducing apparatus starts the mode transition to the normal reproduction by the user response delay time Tu and the apparatus response delay time Td.
The transition processing is completed at the point D where the sum of the time has elapsed and the image display in the normal reproduction mode is performed after reaching the point E.

[0005] In any case, from the time when the user detects a target image in the high-speed reproduction mode to the time when the user transits to the normal reproduction mode, the time required for the sum of the reaction time of the user and the reaction time of the apparatus is obtained. Elapses, and the user cannot see the video between BEs, or has to watch an extra video between BEs.

The present invention has been made in view of the current state of the reproducing operation in such a recording / reproducing apparatus as described above, and a first object of the present invention is to provide a method for visually reproducing an image at a reproducing start position at high speed. When the reproduction operation is performed after transition to normal reproduction, the delay due to the user response delay time and the device response delay time can be compensated, and high-precision reproduction from the detection designated position can be performed. An object of the present invention is to provide a recording and reproducing device.

A second object of the present invention is to visually detect and designate an image at a reproduction start position in high-speed reproduction, and to transition to normal reproduction to reproduce recorded information and to reduce a user reaction delay time and apparatus. It is an object of the present invention to provide a method of reproducing recorded information capable of performing high-precision reproduction from a designated detection position by compensating for a delay caused by a reaction delay time.

[0008]

According to a first aspect of the present invention, there is provided a first storage means for storing a user response delay time for designating detection of a video image during high-speed playback. A second storage means for storing the reaction delay time of the device, and at the time of transition from high-speed playback in the forward or reverse direction to normal playback, an addition operation value of the user reaction delay time and the device reaction delay time; Calculating means for calculating a reproduction start position after the transition based on the high-speed reproduction speed at that time;
Reproducing means for reproducing the information recorded on the recording medium from the reproduction start position calculated by the calculating means.

Similarly, in order to achieve the first object,
According to a second aspect of the present invention, there is provided a first storage means for storing a user response delay time designated to detect a video at the time of high-speed playback, a second storage means for storing a reaction delay time of the apparatus, and a forward or reverse direction. At the time of transition from the high-speed reproduction to the normal reproduction in the direction, the reproduction start position after the transition is calculated based on the addition operation value of the user reaction delay time and the device reaction delay time and the high-speed reproduction speed at that time. Calculating means; reproducing means for reproducing information recorded on the recording medium from the reproduction start position calculated by the calculating means; and scene change detecting means for detecting a scene change point of the video information; A silent section detecting means for detecting a silent section of information; and a scene change point or a silent section when a scene change point or a silent section exists near the reproduction start position calculated by the calculating means. In section, it is characterized in that the correction control means for correcting the reproduction start position are provided.

[0010] Similarly, in order to achieve the first object,
According to a third aspect of the present invention, there is provided a first storage means for storing a user response delay time designated to detect a video at the time of high-speed playback, a second storage means for storing a reaction delay time of the apparatus, and a forward or reverse direction. At the time of transition from the high-speed reproduction to the normal reproduction in the direction, the reproduction start position after the transition is calculated based on the addition operation value of the user reaction delay time and the device reaction delay time and the high-speed reproduction speed at that time. Calculating means; reproducing means for reproducing information recorded on the recording medium from the reproduction start position calculated by the calculating means; and scene change detecting means for detecting a scene change point of the video information; A silent section detecting means for detecting a silent section of information; and a scene change point or a silent section when a scene change point or a silent section exists near the reproduction start position calculated by the calculating means. A correction control means for correcting the reproduction start position is provided in the section, and further, when the reproduction start position is corrected by the correction control means, the reproduction start position calculated by the arithmetic means and the correction control means are corrected by the correction control means. A difference value calculating means for calculating a difference value from the reproduction start position, a user reaction delay time calculating means for newly calculating a user reaction delay time based on the difference value, and a user calculated by the user reaction delay time calculating means. Updating means for updating and storing the reaction delay time in the first storage means is provided.

In order to achieve the second object, the invention according to claim 5 is characterized in that a first storage step of storing a user response delay time designated to detect a video image at the time of high-speed playback, and a response delay time of the apparatus. A second storage step for storing the user response delay time and the device response delay time at the time of transition from high-speed reproduction in the forward or reverse direction to normal reproduction, and the high-speed reproduction speed at that time. And a reproducing step of reproducing information recorded on a recording medium from the reproduction start position calculated in the calculating step, based on the following. It is.

Similarly, in order to achieve the second object,
The invention according to claim 6, wherein a first storage step of storing a user reaction delay time designated to detect a video during high-speed playback;
A second storing step of storing a reaction delay time of the device;
At the time of transition from high-speed reproduction in the forward or reverse direction to normal reproduction, based on the addition operation value of the user reaction delay time and the device reaction delay time, and the high-speed reproduction speed at that time,
A calculating step of calculating a playback start position after the transition;
A reproduction step of reproducing information recorded on the recording medium from the reproduction start position calculated in the calculation step,
And a scene change detecting step of detecting a scene change point of the video information; a silent section detecting step of detecting a silent section of the audio information; Exists, a correction control step of correcting a reproduction start position is provided at the scene change point or the silent section.

[0013] Similarly, in order to achieve the second object,
The invention according to claim 7, wherein a first storage step of storing a user reaction delay time designated to detect a video at the time of high-speed playback;
A second storing step of storing a reaction delay time of the device;
At the time of transition from high-speed reproduction in the forward or reverse direction to normal reproduction, based on the addition operation value of the user reaction delay time and the device reaction delay time, and the high-speed reproduction speed at that time,
A calculating step of calculating a playback start position after the transition;
A reproduction step of reproducing information recorded on the recording medium from the reproduction start position calculated in the calculation step,
And a scene change detecting step of detecting a scene change point of the video information, a silent section detecting step of detecting a silent section of the audio information, and a scene change point or a silent section near the reproduction start position calculated in the calculating step. Is provided, a correction control step for correcting the reproduction start position is provided at the scene change point or the silent section. Further, when the reproduction start position is corrected by the correction control step, the reproduction start calculated in the calculation step is provided. A position, a difference value calculation step of calculating a difference value between the reproduction start position corrected in the correction control step, and a user reaction delay time calculation step of newly calculating a user reaction delay time based on the difference value; The user reaction delay time calculated by the user reaction delay time calculation step is the first
Is provided with an updating step of updating and storing.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing the configuration of the embodiment, and FIG. 2 is a plan view showing the configuration of the remote commander of FIG.

In the present embodiment, as shown in FIG. 1, an output terminal and an external input terminal 3 of a tuner 2 connected to an antenna 1 are respectively connected to switching terminals of a switch 4, and a common terminal of the switch 4. Is connected to an input terminal of a recording unit RU for recording a video signal, and an output terminal of the recording unit RU is connected via a bus B to an input terminal of a disk-shaped recording medium 22 on which a video signal is recorded. An output terminal of the recording medium 22 is connected via a bus B to an input terminal of a reproducing unit GU performing a reproducing operation. Also, a control unit CU for controlling the entire operation
Is connected to the recording unit RU, the reproducing unit GU, and the disc-shaped recording medium 22, and includes a control unit CU, a recording unit RU, a reproducing unit GU, and a bus B for detecting a scene change point and detecting a silent section. Is connected to the disk-shaped recording medium 22 via the.

In the recording unit RU, a video signal processing circuit 5 for performing signal processing such as AGC on a video signal and an audio signal processing circuit 9 for performing signal processing such as noise removal on an audio signal are provided at a common terminal of the switch 4. Are connected in parallel to each other, and an output terminal of the video signal processing circuit 5 is connected to an AD converter 6 for performing AD conversion.
The output terminal of the converter 6 is connected to a video signal compressor 7 for compressing the video signal, and the output terminal of the video signal compressor 7 is connected to a memory 8 for storing the compressed video signal. I have. The output terminal of the audio signal processing circuit 9 is connected to an AD converter 10 for performing AD conversion.
An output terminal of the converter 10 is connected to an audio signal compressor 11 for compressing an audio signal, and an output terminal of the audio signal compressor 11 stores a compressed audio signal in the memory 1.
2 are connected, and the memory 12 and the memory 8 are connected to the disk-shaped recording medium 22 via the bus B.

The detection unit DU is provided with a scene change detection circuit 13 for detecting a scene change point and a silence detection circuit 14 for detecting a silent section. The scene change detection circuit 13 and the silence detection circuit 14 A memory 15 for storing data is connected. Output terminals of the AD converters 6 and 10 are connected to a scene change detection circuit 13 and a silence detection circuit 14, respectively. It is connected to a disk-shaped recording medium 22.

In the reproduction unit GU, a memory 23 for storing a video signal read from the disk-shaped recording medium 22 at the time of reproduction is provided connected to the bus B, and the memory 23 has a video signal for expanding the video signal. A signal expander 24 is connected, a DA converter 25 that performs DA conversion is connected to the video signal expander 24, and a video signal processing circuit 26 that performs signal processing such as emphasis on the video signal is connected to the DA converter 25. Is connected, and the video signal processing circuit 26
Is connected to a monitor 27 for displaying a video signal. The playback unit GU is provided with a memory 28 connected to the bus B for storing an audio signal read from the disc-shaped recording medium 22 during playback.
Is connected to an audio signal expander 29 that expands an audio signal, the audio signal expander 29 is connected to a DA converter 30 that performs DA conversion, and the DA converter 30 performs signal processing such as amplification. An audio signal processing circuit 31 is connected, and a speaker 32 that outputs audio based on the audio signal is connected to the audio signal processing circuit 31.

The control unit CU is provided with a microcomputer 17 for controlling the entire operation. The microcomputer 17 has memories 8, 12, 23,
Memory controller 20 for controlling writing / reading of 28
And a disk controller 21 that controls writing and reading of the disk-shaped recording medium 22. The memory controller 20 is connected to the memories 8, 12, 23, and 28, and the disk controller 21 is connected to the disk-shaped recording medium 2.
2 are connected. In addition, the microcomputer 17
An operation unit 16 to which various operation commands are input and a receiving circuit 1 for receiving a command signal from a remote commander 18
9 and a microcomputer 17
Is connected to the memory 15 of the detection unit DU and the control terminal of the switch 4.

The remote commander 18 according to the present embodiment
A transmitting circuit 41 for transmitting an infrared signal is provided at an upper end portion of the transmitting circuit 41 as shown in FIG.
Has a function of outputting a corresponding infrared signal to the receiving circuit 19 when various keys of the remote commander 18 are operated. In the remote commander 18,
A key 42 is an ON / OFF key for turning on / off the power of the recording / reproducing apparatus.
A key 43 is a key for switching a user ID for specifying an individual, a key 44 is a channel selection key for performing UP / DOWN of a channel of the tuner 2, and a key 45 is a key for setting a recording mode. Similarly, in the remote commander 18,
A key 47 is a key for setting a normal reproduction mode, a key 48 is a key for setting a fast forward reproduction mode in the forward direction, a high speed reproduction mode in the forward direction is set by a first operation, and a normal reproduction mode is set by a second operation. A reverse fast reverse key 46 is set by the first operation to set the reverse high-speed fast reverse mode, and returns to the normal return mode by the second operation. The key 49 is a stop key operated at the time of stop, and the key 50 is a pause key operated at the time of stop.

The operation of the present embodiment having such a configuration is described below.
This will be described with reference to FIGS. 3 is an explanatory diagram of a reproduction start position setting operation according to the present embodiment. FIG. 4 is a flowchart showing a reproduction start position setting operation according to the present embodiment.
FIG. 6 is an explanatory diagram of a reproduction start position setting operation at the time of reverse operation of the present embodiment, FIG. 6 is an explanatory diagram of a reproduction start position correction operation of the present embodiment, and FIG. FIG. 8 is a flowchart showing the operation of updating the user response delay time, and FIG. 8 is an explanatory diagram of the reproduction start position correction operation in the reverse operation of the present embodiment.

[Normal Recording / Reproduction Mode] First, the operation in the normal recording / reproduction mode of the present embodiment will be described. A video signal received by antenna 1 and tuned by tuner 2;
Alternatively, the video signal input from the external input terminal 3 is input to the switch 4, and the video signal selected by the command of the microcomputer 17 is output to the video signal processing circuit 5.
Signal processing such as AGC is performed, and then the AD converter 6
The video signal is compressed by the video signal compressor 7,
Image compression such as 2 is performed, and the image-compressed video data is stored in the memory 8 and transferred and recorded on the disk-shaped recording medium 22 according to a command from the microcomputer 17.

In this case, the video data that has been A / D converted by the A / D converter 6 is also input to the scene change detection circuit 13, and the scene change detection circuit 13 obtains a difference between frames to obtain a point at which the frame correlation of the video signal is small. Is detected, the scene change point is detected, and the temporal position information of the scene change point is stored in the memory 1.
5 is stored.

On the other hand, the audio signal selected by the command of the microcomputer 17 is output to the audio signal processing circuit 9 by the audio signal processing circuit 9.
Signal processing such as noise removal is performed, then AD converted by the AD converter 10, and the audio signal compressor 11
Speech compression such as MPEG2 audio is performed, and the speech-compressed speech data is stored in the memory 12 and transferred and recorded on the disc-shaped recording medium 22 according to a command from the microcomputer 17. In this case, the audio data that has been AD-converted by the AD converter 10 is also input to the silence detection circuit 14, and the silence detection circuit 14 detects the silence section of the audio signal by taking the envelope of the audio signal, thereby detecting the silence of the audio. Temporal position information is stored in the memory 15 as a section. The position information of the scene change point and the silence section stored in the memory 15 can be accessed from the microcomputer 17, and the position information can be written to the disk-shaped recording medium 22 or read from the disk-shaped recording medium 22. It is.

At the time of reproducing operation, the microcomputer 1
7, the video data read from the disc-shaped recording medium 22 is stored in the memory 23, and the video data read from the memory 23 is expanded by the video signal decompressor 24 by MPEG2. After the digital-to-analog conversion by the DA converter 25, the video signal processing circuit 26 performs signal processing such as emphasis to obtain a composite video signal, which is input to the monitor 27 to reproduce and display the video. The audio data read from the disk-shaped recording medium 22 is stored in the memory 28 in accordance with a command from the microcomputer 17, and the audio data read from the memory 28 is converted into MPEG2 audio data by the audio signal decompressor 29. Is stretched,
After D / A conversion by the D / A converter 30, signal processing such as amplification is performed in the audio signal processing circuit 31, and is input to the speaker 32, and the speaker 32 outputs audio based on the audio data.

[Reproduction start position setting mode] Here, the operation in the reproduction start position setting mode according to the present embodiment in which the normal reproduction operation is performed from the reproduction start position visually detected and designated by the user in the high-speed reproduction operation will be described. .

In this case, the key 48 is operated, and the reproduction unit GU performs a high-speed reproduction operation in accordance with a command from the microcomputer 17, and fast-forward reproduction is performed between AB in FIG. The user confirms the target image for designating the reproduction start, and operates the key 48 again to set the normal reproduction mode. In this state, in step S1 of the flowchart of FIG.
If it is determined that the current mode is fast forward playback, it is determined whether or not the current mode is fast forward playback. If it is determined that the current mode is fast forward playback mode, the process proceeds to step S4. In step S4, the reaction delay time Tt is calculated by the following equation, where the user response delay time is Tu and the device reaction delay time is Td. In this case, the user response delay time Tu
The average value of a human is usually the device response delay time Td
Are stored in the memory of the microcomputer 17 in advance, and these values are read and the calculation is performed.

Tt = Tu + Td (1)

Next, the process proceeds to step S5, where the current D
If the time of the point is TimeD and the high-speed reproduction at that time is n times speed, the time TimeB of the image detected and designated by the user is:
It is calculated by the following equation (2).

TimeB = TimeD−Tt · n (2) (where n is n> 0 in the forward direction and n <0 in the reverse direction)
It is. )

Then, proceeding to step S6, the calculated time TimeB is set as the start point of the normal reproduction after the transition, and the reproduction processing is performed from the set start point.

On the other hand, if it is determined in step S2 that the mode is not the fast-forward playback mode, the process proceeds to step S3, where a process for fast-forward playback is executed. Then, the process proceeds from step S6 or step S3 to step S7. If it is determined in step S1 that the fast-forward key is not ON, the process proceeds to step S7 to execute a process for another key input.

By the way, the same applies to the transition from the high-speed reproduction in the reverse direction by the operation of the key 46 to the normal reproduction by the operation of the key 46 again. In this case, FIG.
As shown in the figure, fast-reverse playback is performed at AB, the user confirms an image desired to be played back at point B, and then presses key 4 again.
By performing the operation 6, the key 46 is turned on at the point C after the user response delay time Tu. When it is determined that the fast-return key 46 is ON at the point D where the transition process is being performed,
The reaction delay time Tt is calculated by the equation (1), and the calculation of the reproduction start point of the disc-shaped recording medium 22 after the transition is performed based on the equation (2) in consideration of the reproduction speed of the fast reverse reproduction. The reproduction is performed from the calculated reproduction start point.

As described above, according to the operation in the reproduction position setting mode of the present embodiment, the user can specify the reproduction start point visually detected by the user during the high-speed reproduction operation in both the forward rotation and the reverse rotation. A reproduction start point that compensates for the user response delay time Tu and the device response delay time Td is calculated from the image position to be reproduced, and from the calculated reproduction start point, transition to normal reproduction is performed with high accuracy, and the reproduction from the desired position is started. The reproduction operation can be started properly.

[Reproduction Start Position Correction Mode] Next, the operation in the reproduction start position correction mode for correcting the reproduction start position based on the scene change point of the video signal or the silent section of the audio signal according to the present embodiment will be described. I do.

In this case, as shown in FIG. 6, fast-forward playback is performed between AB and the user visually detects an image designating the start of playback at point B during fast-forward playback. Key 48 is turned on at point C after user reaction delay time Tu
The operation is performed, and the transition process is started at a point D after the device reaction delay time Td. In this state, if it is determined in step S11 of the flowchart of FIG. 7 that the fast-forward key 48 is ON, the process proceeds to step S12, where it is determined whether or not the current mode is fast-forward playback, and fast-forward playback is performed. If the mode is determined, the process proceeds to step S14,
The calculation of the reaction delay time Tt is performed based on the equation (1). Next, the process proceeds to step S15, where the time T of the image at which reproduction specified by the user based on equation (2) is to be started.
imB is calculated.

In general, when a scene change point exists in a video, the image position detected and designated by the user as a reproduction position basically matches the scene change point. Thus, the time information of the scene change point stored in the memory 15 is searched, and it is determined whether or not the scene change point exists near the reproduction start point calculated based on the equation (2) under a predetermined condition. A determination is made. If it is determined that a scene change point exists, the process proceeds to step S17, where the microcomputer 17 searches for the normal reproduction start point after the transition from the calculated reproduction start point B as shown in FIG. The modified scene change point B 'is set.

If it is determined in step S16 that a scene change point does not exist near the calculated reproduction start point, the process proceeds to step S18, where the microcomputer performs processing for the silent section stored in the memory 15 by the microcomputer. The time information is searched, and it is determined whether or not there is a silent section near a predetermined condition of the reproduction start point calculated based on the equation (2). If it is determined that there is a silent section, the process proceeds to step S19, where the microcomputer 17 searches for the normal reproduction start point after the transition from the calculated reproduction start point B as shown in FIG. The corrected silent section B 'is set.

On the other hand, if it is determined in step S18 that there is no silent section near the calculated reproduction start point,
Proceeding to step S22, as in the case of the reproduction start position setting mode, normal reproduction processing is performed with the calculated reproduction start point as the reproduction start point.

By the way, from step S17 or step S19, the process proceeds to step S20, where the user reaction delay time is corrected, the time of the scene change point or the silent section is TimeB ', and the time of the calculated reproduction start point is TimeB'. , The conventional user response delay time is OldUs
erTime, modified user response delay time Now
The correction of the user response delay time is performed as UserTime by the following equation.

NowUserTime = OldUserTime + (TimeB−TimeB ′) (3)

A scene change point or a silent section B '
If the calculated playback start point B is older than the calculated playback start point B, the corrected user reaction delay time becomes longer than before the correction, and the scene change point or the silent section B ′ is temporally longer than the calculated playback start point B. , The corrected user response delay time is shorter than before the correction.

Next, proceeding to step S21, the user response delay time is updated.
By storing and managing multiple user response delay times,
The optimal user response delay time for each user can be used by switching the key 43. When updating the user response delay time, assuming that the weight of the conventional user response delay time and the current user response delay time is a: b, the updated user response delay time NewUserTime
e is calculated by the following equation.

NewUserTime = (OldUserTime · a + NowUserTime · b) / (a + b) (4)

The user response delay time thus calculated and updated is used as the user response delay time from the next processing. Further, the process proceeds to step S22, where the normal reproduction process is performed with the scene change point or the silent section B 'as the start point of the normal reproduction after the transition, and the process proceeds to step S23.
And the processing for another key input is performed.

If it is determined in step S12 that the mode is not the fast-forward playback mode, the flow advances to step S13 to perform fast-forward playback processing, and then to step S23 to perform other key processing. Step S
If it is determined in step 11 that the fast forward key is not ON,
Proceeding to step S23, other key processing is performed.

By the way, the same applies to the case where the transition from the high-speed reproduction in the reverse direction by the operation of the key 46 to the normal reproduction by the operation of the key 46 again. In this case, as shown in FIG. When reverse reproduction is performed, the user confirms the image desired to start reproduction at point B, and operates the key 46 again, the key 46 is turned on at point C after the user response delay time Tu. Then, when it is determined that the fast-return key 46 is ON at the point D where the transition processing is being performed, (1)
The calculation of the reaction delay time Tt by the equation is performed.
In consideration of the reproduction speed of the fast reverse reproduction, the reproduction start point of the disc-shaped recording medium 22 after the transition is calculated based on the equation (2) to calculate the reproduction start point B. If a scene change point or a silent section exists near the start point B, as shown in FIG. 8, the normal playback start point after the transition is changed to the scene change point or the silent section searched from the calculated playback start point B. B 'is corrected and set. Further, the user response delay time is corrected by the following equation. NowUserTime = OldUserTime-
(TimeB-TimeB ')

As described above, according to the operation in the reproduction position correction mode of the present embodiment, the user designates the reproduction start point visually detected by the user during the high-speed reproduction operation in both the forward rotation and the reverse rotation. The reaction delay time Tt is calculated by compensating the user reaction delay time Tu and the device reaction delay time Td from the image position to be reproduced, and the scene is located near the reproduction start point corresponding to the calculated reaction delay time Tt. If there is a change point or a silence section, the playback start point is corrected to the position corresponding to these, and the transition to the normal playback is performed with high accuracy after the user response delay time is accurately corrected, and playback from the desired position is performed. The operation can be started properly.

In the embodiment described above, the case where the user reaction delay time is automatically updated when a scene change point or a silent section exists near the calculated reproduction start point will be described. However, the present invention is not limited to this embodiment. For example, the user can directly manually set the user response delay time by menu selection. As shown in FIG. 9, a user response delay time measurement mode can be selected, and when this mode is selected, a message "press the fast forward key" is displayed on the monitor, and this time is set to t1, It is also possible to calculate the user response delay time by calculating the user response delay time by the following equation, with the time at which the key input is recognized and the processing is started as t3.

User reaction delay time = t3−t1−reaction delay time of apparatus (5)

In this case, if the average value of the measured values obtained by performing the measurement several times is set as the user response delay time, a highly reliable user response delay time can be obtained.

[0052]

According to the first or fifth aspect of the present invention, the user's reaction delay time designated to detect a video image at the time of high-speed reproduction and the reaction delay time of the apparatus are stored, and the forward or reverse high-speed operation is performed. At the time of transition from reproduction to normal reproduction, the reproduction start position after the transition is calculated based on the addition operation value of the user response delay time and the device reaction delay time and the high-speed reproduction speed at that time, and the calculated reproduction is performed. Since the reproduction of the information stored in the recording medium is started from the start position, the user reaction delay time and the device reaction delay time are compensated from the image position specified by the user, and the position is specified with high accuracy and recorded. It is possible to perform the operation of reproducing the information stored in the medium.

According to the second or sixth aspect of the present invention, in addition to the effects obtained by the first or fifth aspect, a scene change point of video information or a silent section of audio information is detected. If there is a scene change point or a silent section near the calculated playback start position,
Since the playback start position is corrected to a scene change point or the silent section, it becomes possible to more accurately start playback from a target video position.

According to the third or seventh aspect of the invention, in addition to the effect obtained by the second or sixth aspect of the present invention, when the reproduction start position is corrected, the calculated reproduction start position is corrected. Is calculated from the playback start position
The user response delay time is newly calculated based on the difference value, and the calculated user response delay time is updated and stored, so that the user response delay time is automatically updated with high accuracy by scene change points or silent sections. This makes it possible to reduce the burden on the user in operation.

According to the invention described in claim 4 or claim 8, in the invention described in any one of claims 1 to 3, or in the invention described in any of claims 5 to 7, The response delay time is stored and managed in association with a user ID for specifying a user, so that the reproduction operation is executed while appropriately managing the response delay time in correspondence with a plurality of users. In addition, it is possible to realize the effects of the invention described in any one of claims 3 to 5, or the effects of the invention described in any of claims 5 to 7.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a plan view showing a configuration of a remote commander of FIG.

FIG. 3 is an explanatory diagram of a reproduction start position setting operation according to the embodiment;

FIG. 4 is a flowchart showing a reproduction start position setting operation of the embodiment.

FIG. 5 is an explanatory diagram of a reproduction start position setting operation at the time of a reverse operation of the embodiment.

FIG. 6 is an explanatory diagram of a reproduction start position correction operation of the embodiment.

FIG. 7 is a flowchart showing an operation of correcting a reproduction start position and updating a user reaction delay time according to the embodiment.

FIG. 8 is an explanatory diagram of a reproduction start position correction operation at the time of the reverse operation of the embodiment.

FIG. 9 is an explanatory diagram showing a configuration of a main part of a modification of the embodiment.

FIG. 10 is an explanatory diagram of a reproducing operation of a conventional recording / reproducing device.

FIG. 11 is an explanatory diagram of a reproducing operation at the time of a backward operation of the conventional recording / reproducing apparatus.

[Explanation of symbols]

5 video signal processing circuit, 7 video signal compressor, 8 memory, 9 audio signal processing circuit, 11 audio signal compressor, 1
2 memory, 13 scene change detection circuit, 14 silence detection circuit, 15 memory, 17 microcomputer, 22 disk recording medium, 23 memory, 24
Video signal expander, 26 ... Video signal processing circuit, 27 ... Monitor, 28 ... Memory, 29 ... Audio signal expander, 31 ... Audio signal processing circuit 31, 32 ... Monitor

Claims (8)

[Claims] 1. A first storage means for storing a user response delay time designated for video detection during high-speed playback, a second storage means for storing a device response delay time, and a high-speed forward or reverse direction. At the time of transition from reproduction to normal reproduction, based on the addition operation value of the user response delay time and the device response delay time, based on the high-speed reproduction speed at that time,
A recording / reproducing apparatus comprising: a calculating means for calculating a reproduction start position after the transition; and a reproducing means for reproducing information recorded on a recording medium from the reproduction start position calculated by the calculating means. 2. A first storage means for storing a user response delay time designated for video detection during high-speed playback; a second storage means for storing a reaction delay time of the apparatus; At the time of transition from reproduction to normal reproduction, based on the addition operation value of the user response delay time and the device response delay time, based on the high-speed reproduction speed at that time,
Calculating means for calculating a reproduction start position after the transition; and reproducing means for reproducing information recorded on a recording medium from the reproduction start position calculated by the calculating means, and a scene change point of video information. A silent section detecting means for detecting a silent section of audio information; and a scene change point or a silent section near the reproduction start position calculated by the calculating means. Alternatively, the recording / reproducing apparatus is provided with correction control means for correcting a reproduction start position in the silent section. 3. A first storage means for storing a user response delay time designated for video detection during high-speed playback, a second storage means for storing a device response delay time, and a high-speed forward or reverse direction. At the time of transition from reproduction to normal reproduction, based on the addition operation value of the user response delay time and the device response delay time, based on the high-speed reproduction speed at that time,
Calculating means for calculating a reproduction start position after the transition; and reproducing means for reproducing information recorded on a recording medium from the reproduction start position calculated by the calculating means, and a scene change point of video information. A silent section detecting means for detecting a silent section of audio information; and a scene change point or a silent section near the reproduction start position calculated by the calculating means. Alternatively, a correction control unit for correcting a reproduction start position is provided in the silent section, and further, when the reproduction start position is corrected by the correction control unit, the reproduction start position calculated by the calculation unit and the correction control unit Difference value calculating means for calculating a difference value between the corrected reproduction start position, and a user response for newly calculating a user response delay time based on the difference value Extending the time calculating means, a recording and reproducing apparatus, characterized in that the user reaction time delay user reaction delay time calculating means is calculated, and a first updating means for updating stored in the storage means are provided. 4. The recording / reproducing apparatus according to claim 1, wherein said first storage means stores and manages a reaction delay time of the user in association with a user ID for specifying the user. A recording / reproducing apparatus characterized in that: 5. A first storage step for storing a user response delay time designated for video detection during high-speed playback, a second storage step for storing a device response delay time, and a high-speed forward or reverse direction. At the time of transition from reproduction to normal reproduction, based on the addition operation value of the user response delay time and the device response delay time, based on the high-speed reproduction speed at that time,
A method for reproducing stored information, comprising: a calculation step of calculating a reproduction start position after the transition; and a reproduction step of reproducing information recorded on a recording medium from the reproduction start position calculated in the calculation step. . 6. A first storage step for storing a user response delay time designated for video detection during high-speed playback, a second storage step for storing a device response delay time, and a high-speed forward or reverse direction. At the time of transition from reproduction to normal reproduction, based on the addition operation value of the user response delay time and the device response delay time, based on the high-speed reproduction speed at that time,
An operation step of calculating a reproduction start position after the transition; and a reproduction step of reproducing information recorded on a recording medium from the reproduction start position calculated in the operation step,
A scene change detecting step for detecting a scene change point of the video information; a silent section detecting step for detecting a silent section of the audio information; and a scene change point or a silent section near the reproduction start position calculated in the calculating step. Wherein a correction control step of correcting a reproduction start position is provided at the scene change point or the silent section. 7. A first storage step for storing a user response delay time designated for video detection during high-speed playback, a second storage step for storing a device response delay time, and a high-speed forward or reverse direction. At the time of transition from reproduction to normal reproduction, based on the addition operation value of the user response delay time and the device response delay time, based on the high-speed reproduction speed at that time,
An operation step of calculating a reproduction start position after the transition; and a reproduction step of reproducing information recorded on a recording medium from the reproduction start position calculated in the operation step,
A scene change detecting step for detecting a scene change point of the video information; a silent section detecting step for detecting a silent section of the audio information; and a scene change point or a silent section near the reproduction start position calculated in the calculating step. Is present, the scene change point or the silent section is provided with a correction control step of correcting a reproduction start position, and further, when the reproduction start position is corrected by the correction control step,
A difference value calculation step of calculating a difference value between the reproduction start position calculated in the calculation step and the reproduction start position corrected in the correction control step; and a new user response delay time is calculated based on the difference value. A user response delay time calculation step; and an update step of updating the user response delay time calculated by the user response delay time calculation step in the first storage means. Playback method. 8. The method for reproducing stored information according to claim 5, wherein in the first storing step, a reaction delay time of the user is associated with a user ID for specifying the user. A method for reproducing stored information, characterized by being stored and managed.