JP2001309281A - Reproduction apparatus and method having double speed reproduction processing function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reproduction apparatus and method having double speed reproduction processing function capable of reproducing with certainty an image identified by an operator during an operation of a double speed reproduction processing such as a fast-forward reproduction and a fast rewinding reproduction. SOLUTION: In this apparatus, the operator identifies a desired screen at timing T3 during the fast-forward reproduction so as to push a PLAY button. A time drift W is caused between the timing T3 identifying the desired screen and timing T4 pushing the button practically. Therefor, the starting point is jumped to the rewinding amounts responding to the drift W so as to restart reproduction. The amounts are determined according to the double speed at the pushed point of the button.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing apparatus and a reproducing method having a double-speed reproducing function, and more particularly to a basic processing command such as a reproducing command from an operator during double-speed reproducing processing such as fast forward reproduction or fast reverse reproduction. Related to the processing when is input.

2. Description of the Related Art DVD (D
A playback device such as an digital versatile disc) can perform fast forward playback in which an image is played back in a fast forward state.
FIG. 5 is a diagram showing a reproducing state in a conventional reproducing mechanism. When the operator presses the PLAY key of the operation unit at timing T1, the playback device starts playback of images and sounds recorded on a DVD or the like. Then, the operator presses the fast-forward FWD key of the operation unit at timing T2 to perform fast-forward playback. Thus, the playback device starts fast-forward playback of the image. In this case, the image is reproduced on the display screen in a fast forward state.
Thereafter, it is assumed that the operator finds a desired screen at timing T3. Then, in order to stop the fast-forward and play at the normal speed, the PLAY key of the operation section is pressed, and the playback device ends the fast-forward process in response to the pressing of the PLAY key and performs the normal playback. However, in general, from the point in time when the operator finds the desired screen during fast forward playback (T
3), a time lag W occurs before the PLAY key of the operation unit is pressed (T4). For this reason, there is a problem that reproduction cannot be performed from a desired screen. In this case, in order to play back from the desired screen, the user must press the REV key of the return operation from timing T4 to return the image to timing T3, and then press the PLAY key again. A similar problem also occurs when a desired screen is found during fast reverse playback in the reverse direction opposite to the feed direction. In other words, there is a time lag between the point when the operator finds the desired screen and the point when the PLAY key is pressed during fast reverse playback, and in actuality, when a larger amount than the desired screen is returned, It will be played.
Therefore, an object of the present invention is to provide a playback apparatus and a playback method having a double-speed playback processing function capable of reliably playing back images and the like recognized by an operator during execution of double-speed playback processing such as fast-forward playback and fast-reverse playback. And

(1) In the reproduction apparatus having the double-speed reproduction processing function according to the first aspect, the reproduction control unit performs the basic operation during the double-speed reproduction processing in the double-speed direction. When a processing command is input, the processing returns by a predetermined amount in the direction opposite to the double speed direction to execute the basic processing. There is a time lag between the time when the operator recognizes the desired record content and the time when the basic processing command is input during execution of the double speed processing. Then, the playback control unit returns the predetermined amount in the direction opposite to the double speed direction and executes the basic processing, thereby eliminating this time lag and ensuring that the basic processing is performed for the recording content desired by the operator. Can be performed. (2) In the reproducing apparatus having the double-speed reproducing function according to claim 2, the recording location of the recorded content on the recording medium is:
It is specified by the absolute reproduction time of each recorded content. Then, the reproduction control unit executes the basic processing by designating the reproduction absolute time returned by a predetermined amount in the direction opposite to the double speed direction. As described above, by executing the basic processing by designating the absolute reproduction time, it is possible to execute the basic processing quickly and more reliably for the recording contents desired by the operator. (3) In the playback device having the double-speed playback function according to the third aspect, the basic process is a playback process for a recording medium. Therefore, it is possible to surely execute the reproduction process for the recording contents desired by the operator. (4) In the reproducing method having the double-speed reproduction processing function according to the fourth aspect, the step of performing the double-speed reproduction processing on the recording medium, a basic processing command is input from the operator during the execution of the double-speed reproduction processing in the double-speed direction. At this time, there is provided a step of executing a basic process by returning a predetermined amount in the direction opposite to the double speed direction. There is a time lag between the time when the operator recognizes the desired record content and the time when the basic processing command is input during execution of the double speed processing. Then, by returning the predetermined amount in the direction opposite to the double speed direction and performing the basic processing, the time lag is eliminated, and the basic processing can be reliably performed on the recording contents desired by the operator. it can. (5) Explanation of terms Each term described in the claims is explained, and the correspondence between each term and each part in the embodiment is shown. In addition, each part in embodiment is an illustration, Comprising: The concept and range of each term described in a claim are not limited by this. The “recording medium” refers to a medium on which recorded content is recorded at least in a state capable of reproducing at double speed, and the DVD in the first embodiment corresponds to this.
Further, an optical recording medium, a magnetic recording medium, and an optical magnetic recording medium are also included. As the optical recording medium, the above-described DV
In addition to D, CD (Compact Disc), MD (Mini Disc), CD-ROM
(Compact Disc-ROM) and LD (Lsser Disc). As magnetic recording media, audio magnetic tape,
There are video magnetic tapes and the like. “Double-speed playback processing” refers to processing for playing back the recorded content of a recording medium at a speed higher than the normal playback speed. Also includes reproduction in the reverse direction (reverse reproduction) opposite to the feed direction. The fast forward playback process in the first embodiment and the fast reverse playback process in the second embodiment correspond to “double speed playback process”. "Basic processing"
This means a process other than the double-speed playback process, and the playback process in the first embodiment and the second embodiment corresponds to this. Also, a stop process, a temporary stop process, and the like are included. The "reproduction control unit" means means for controlling double-speed reproduction processing and basic processing, and includes the CPU 2, the drive unit and the servo processing unit 12 in the first and second embodiments.
And the video / audio decoding processing unit 14 corresponds to this. The “basic processing command” means a command of a process other than the double-speed playback process, and the command of the playback process in the first and second embodiments corresponds to this. It also includes a command for a stop process, a command for a temporary stop process, and the like. `` Command input section ''
Means means for an operator to input basic processing, and the main body operation keys 16 and the remote controller 24 in the first and second embodiments correspond to this. Also,
For example, a voice input unit for issuing a voice input command is also included. "The direction opposite to the double speed direction" means the direction opposite to the double speed direction, and the return direction in the first embodiment and the feed direction in the second embodiment correspond to this. The “predetermined amount” corresponds to the return amount X in the first embodiment and the second embodiment. The predetermined amount may be arbitrarily set by the operator.
The “reproduction absolute time” means an absolute time for specifying the recorded content on the recording medium, and a specific recorded content is associated with each reproduction absolute time. The second, such as “1 hour, 14 minutes, 30 seconds” exemplified in the first embodiment,
"0 hour, 46 minutes, 10 seconds" and the like exemplified in the embodiment correspond to this.

DESCRIPTION OF THE PREFERRED EMBODIMENTS (1) First Embodiment A first embodiment of a reproducing apparatus having a double-speed reproducing function and a reproducing method according to the present invention will be described by taking a DVD reproducing apparatus as an example. FIG. 1 is a diagram showing a playback state in the present embodiment, and FIG. 2 is a hardware configuration diagram of a DVD playback device that performs the processing shown in FIG. FIG. 3 is a flowchart of a program stored in the ROM 4 shown in FIG. (1-1) Hardware Configuration As shown in FIG. 2, the DVD playback device according to the present embodiment includes a CPU 2, a ROM 4, and a memory 6 connected to a bus line 10. The CPU 2 controls each unit according to a program stored in the ROM 4. The display unit 8 is also connected to the bus line 10. The display unit 8 displays the current processing contents such as PLAY, FWD, REV, etc., time, and the like. Further, a drive unit and a servo processing unit 12 and a video / audio decoding processing unit 14 are connected to the bus line 10. Drive unit and servo processing unit 12 are set in the drive
The compressed data of the DVD is read, and the read compressed data is decoded by the video / audio decoding processing unit 14. Then, this data is converted into an audio analog signal and a video analog signal through a D / A converter 20 and a video encoding unit 22, respectively, and supplied to a television main body. The television main body projects an image on the outer surface of the display based on a given signal, and generates sound from a speaker. Further, a main body operation key 16 and a remote control receiving unit 18 are connected to the bus line 10. The main body operation keys 16 are provided with various input keys such as a PLAY key, an FWD key, a REV key, a STOP key, a PAUSE key, and the like, and a command from an operator is input. The remote control receiving unit 18 is the remote control 2
4 is received. The remote controller 24 is provided with various input keys such as a PLAY key, a FWD key, a REV key, a STOP key, and a PAUSE key, like the main body operation keys 16, and receives an instruction from an operator. (1-2) Content of Processing Next, based on FIG. 1 and FIG.
The processing contents of the playback device will be described. The operator depresses the main body operation key 16 or the PLAY key of the remote controller 24 (FIG. 2) at a timing T1 shown in FIG. 1, and inputs a reproduction command. The CPU 2 recognizes this (FIG. 3, step S
2), a command is given to the drive unit and the servo processing unit 12 to start reproduction of DVD data (step S)
4). That is, the drive unit and the servo processing unit 1
2 reads out the read data from the video / audio decoding unit 14, D
The signal is output to the television body via the / A converter 20 and the video encoding unit 22. Thereafter, the operator presses the main body operation key 16 or the FWD key of the remote control 24 (FIG. 2) at a timing T2 shown in FIG. 1, and inputs a fast-forward playback command. The CPU 2 recognizes this (step S6 in FIG. 3) and gives a command to the drive unit and the servo processing unit 12 to start fast-forward reproduction at Y times (step S6).
8). Fast-forward playback refers to playing DVD data in a feed direction on a television screen at a speed faster than the normal playback speed. In this embodiment, three levels of fast-forward speed (Y times) are provided, ie, 2 times, 8 times, and 30 times. The Y-fold is determined according to the time during which the operator has pressed the FWD key. For example, when the operator presses the FWD key for less than 1 second, fast forward playback is performed at 2x speed, and when 1 second or more and less than 2 seconds, fast forward playback is performed at 8x speed. , Fast forward reproduction at 30 times speed. In the present embodiment, three stages of 2 times, 8 times, and 30 times are prepared, but 2 or less stages or 4 or more stages may be set. Thus, on the television screen, FIG.
A playback screen flows at a speed of Y times from the timing T2 shown in FIG. If the operator finds a desired screen by looking at the fast-forward playback screen, the operator presses the main body operation key 16 or the PLAY key of the remote controller 24 shown in FIG. 1 to stop the fast-forward and play back at a normal speed. Here, a time lag W occurs between the time when the operator finds a desired screen during fast-forward playback (T3) and the time when the PLAY key of the operation unit is pressed (T4). Therefore, when the reproduction is performed from timing T4 as in the related art (FIG. 5), the reproduction at the normal speed is actually restarted from a screen different from the screen desired by the operator. For this reason, in the present embodiment, the reproduction is restarted by jumping to the point in time when the amount X corresponding to the time shift W is returned. This return amount X
Is Y for fast-forward playback at the time the PLAY key is pressed.
Determined according to the factor. In this embodiment, the return amount X corresponding to the double speed Y is stored in the memory 6 in advance as a table as shown in Table 1. The recording location of the recorded content recorded on the DVD is specified by the absolute time of reproduction.
That is, the recorded absolute time corresponding to each recorded content is included in the recorded data. Therefore, the return amount X is a time (4 seconds, 16 seconds, 60 seconds) corresponding to the absolute reproduction time.
It has been determined as.

[Table 1] In the present embodiment, the return amount X shown in Table 1 is
The calculation is performed on the assumption that the time from the point in time when the operator recognizes the desired screen (T3) to the point in time when the PLAY key is pressed (T4) is 2 seconds. In this way, the CPU 2 executes the following processing in order to return the reproduction by the predetermined return amount X and resume the reproduction. That is, it recognizes that the operator has pressed the PLAY key during fast-forward playback (step S10), reads out the location of the image appearing on the television screen at this timing T4 through the drive unit and the servo processing unit 12, and temporarily stores it in the memory 6. It is stored (step S12). It is assumed that the absolute reproduction time of the screen appearing on the television screen at timing T4 is "1 hour, 15 minutes, 30 seconds". The CPU 2 reads out “1 hour 15 minutes 30 seconds” and stores it in the memory 6. Next, when the PLAY key is pressed (step S1)
A return amount X corresponding to Y times of the fast-forward reproduction in step (0) is obtained, and a reproduction absolute time backward by the return amount X is obtained from the reproduction absolute time stored in step S12 (step S12).
14). Here, "reverse" means returning in the direction opposite to the double speed direction. For example, suppose that the fast forward reproduction was being executed at 30 times speed when the PLAY key was pressed. In this case, the CPU 2 obtains 60 seconds as the return amount X corresponding to the 30-fold speed (see Table 1), and reverses the absolute reproduction time “1 hour 15 minutes 30 seconds” stored in step S12 by 60 seconds “ 1 hour, 14 minutes, 30 seconds ". In this way, a reproduction place for jumping and reproducing is obtained, and in step S16, reproduction is resumed from the obtained reproduction absolute time. In the above example, the absolute playback time "1 hour 14 minutes 30 seconds" which is 60 seconds backward from the absolute playback time "1 hour 15 minutes 30 seconds" when the operator presses the PLAY key is obtained. From the "second" screen, playback is performed on the television screen at the normal speed. As described above, when the PLAY key is pressed at the timing T4, the playback returns to the return direction by the predetermined return amount X and the normal speed playback is resumed. The reproduction process can be executed from almost the same content as the content desired by the operator. In addition, by executing the reproduction process by designating the absolute reproduction time, it is possible to execute the reproduction process quickly and more reliably from the content substantially the same as the content desired by the operator. In the present embodiment, the operator determines the return amount X (4 seconds, 1
6 seconds, 60 seconds) can be arbitrarily changed. As a result, the operator can obtain the return amount X corresponding to the time difference W peculiar to the operator, and can more reliably jump to the desired screen and resume the reproduction. Further, instead of determining the return amount X based on the table shown in Table 1, the return amount X may be obtained according to an arithmetic expression of “X = WY”. Then, the time lag W may be set to “2 (seconds)” as an initial setting value, so that the operator can arbitrarily change the value of W. The operator can more surely jump to the desired screen and resume the reproduction by setting the time difference W peculiar to the operator. In this case, the operator can substantially change a plurality of return amounts X only by changing one value W. For example, by changing the time lag W to 1.5 seconds, the above-mentioned “X = W
From the formula of “Y”, the return amount X when the double speed Y is doubled is 3
The return amount X when Y times is 8 times is 12 seconds, and Y
The return amount X when the double is 30 times can be set to 45 seconds. (2) Second Embodiment A second embodiment of a reproducing apparatus having a double-speed reproducing function and a reproducing method according to the present invention will be described using a DVD reproducing apparatus as an example. FIG. 4 is a diagram showing a reproduction state in the present embodiment. In the first embodiment, fast-forward playback (FW
The example in which the operator pressed the PLAY key during D) was described. On the other hand, in the present embodiment, fast reverse playback (RE
An example is given when the operator presses the PLAY key during V). The hardware configuration and the like are the same as in the first embodiment. As shown in FIG. 4, the operator operates the main body operation key 16 or the remote control 24 at the timing T1.
Is pressed, and a playback command is input. The CPU 2 recognizes this and sends the drive unit and the servo processor 1
2 to start the reproduction of the DVD data. Thereafter, the operator operates the main body operation key 16 at a timing T5.
Alternatively, the user presses the REV key of the remote controller 24 and inputs a fast reverse playback command. The CPU 2 recognizes this and starts fast reverse reproduction at Y times. The fast-reverse playback means that DVD data is played back at a speed twice as fast as the normal playback speed and in a return direction opposite to a feed direction on a television screen. The fast-forward speed (Y times) is twice as fast as in the first embodiment, and 8 times.
There are three stages of double and 30 times.
The Y-fold is determined according to the time during which the REV key is pressed. The relationship between the Y times and the return amount X is stored as a table as described in the first embodiment (see Table 1). Thus, the timing T is displayed on the television screen.
The playback screen flows in the reverse direction at a speed of 5 to Y times (reverse playback). When the operator finds a desired screen by looking at the fast reverse reproduction screen, the operator depresses the main body operation key 16 or the PLAY key of the remote controller 24 at timing T7 in order to reproduce the image in the feed direction at a normal speed. From the point when the operator finds the desired screen during fast reverse playback (T
6) A time lag W occurs before the PLAY key of the operation unit is pressed (T7). Therefore, the time lag W
Jump to the point in time when X is returned, and resume playback. Suppose that the absolute reproduction time of the screen appearing on the television screen at timing T7 is “0 hours 45 minutes 1
0 seconds ”. At timing T7 when the operator presses the PLAY key, it is assumed that fast reverse playback is being performed at 30 times speed. In this case, 60 seconds are obtained as the return amount X corresponding to the 30-times speed (see Table 1), and the reproduction is resumed at the normal speed by moving backward from “0 hour 45 minutes 10 seconds” at the timing T7 by 60 seconds. Here "retrograde"
Means that it returns in the direction opposite to the double speed direction at that time, and the backward direction in the case of fast reverse playback is the feed direction. That is, in the present embodiment, “0 hour 45 minutes 10
When the time is reversed by 60 seconds from the "second", the absolute reproduction time becomes "0 hour 46 minutes 10 seconds", and the normal speed reproduction is resumed from here. Other configurations, effects, and the like are substantially the same as those of the first embodiment. (3) Other Embodiments The playback device and the playback method having the double-speed playback processing function according to the present invention are not limited to those exemplified in the above embodiments. For example, in each of the above embodiments, the reproduction process has been exemplified as the basic process. However, for example, a stop process, a temporary stop process, or the like can be performed as the basic process. That is, when a stop command (STOP key) or a pause command (PAUSE key) is given during fast-forward playback (or during fast-reverse playback), the playback is stopped in a reverse direction by a predetermined return amount and playback stop processing or pause processing is performed. Execute. This allows the operator to stop or pause on the playback screen that is actually recognized, and the operator issues a playback command (PLAY button) again.
, The reproduction can be resumed from the recognized reproduction screen. Further, in each of the above embodiments, the playback device for the recording medium has been exemplified, but the present invention may be applied to a recording (or recording) playback device capable of performing both recording (or recording) and playback. . Further, in each of the above embodiments, the reproduction is restarted from the image jumped by the predetermined return amount X. However, instead of jumping, while returning a predetermined amount while performing double-speed reproduction processing in the direction opposite to the double-speed direction while the predetermined return amount X is equivalent, reproduction is resumed (basic processing is executed). Is also good. That is,
In the first embodiment, the timing T4 shown in FIG.
When the PLAY key is pressed, the return amount from timing T4
After the fast reverse reproduction by X, the normal speed reproduction is performed in the feed direction. Further, in the second embodiment, when the PLAY key is pressed at the timing T7 shown in FIG. 4, after the fast forward reproduction by the return amount X from the timing T7, the reproduction at the normal speed is performed in the feed direction. Further, in each of the above embodiments, the DVD whose recorded content is specified by the absolute reproduction time has been exemplified. However, when a magnetic recording medium such as an audio magnetic tape or a video magnetic tape is used as a recording medium, generally, the absolute reproduction time is not recorded as data on these recording media. Therefore, the reproduction cannot be resumed by jumping by the predetermined return amount X. In such a recording medium in which the absolute reproduction time is not recorded, the return amount X may be measured based on, for example, the fast-forward (or fast-reverse) time and distance.

[Brief description of the drawings]

FIG. 1 is a diagram showing a playback state in a first embodiment of a playback apparatus and a playback method having a double-speed playback processing function according to the present invention.

FIG. 2 is a hardware configuration diagram of a DVD playback device that performs the processing shown in FIG. 1;

FIG. 3 is a flowchart of a program stored in a ROM 4 shown in FIG.

FIG. 4 is a diagram showing a reproducing state in a second embodiment of a reproducing apparatus and a reproducing method having a double-speed reproducing function according to the present invention.

FIG. 5 is a diagram showing a playback state in a conventional double-speed playback process.

[Description of Signs] 2: CPU 4: ROM 6: Memory 12: Drive unit and servo processing unit 14: Video / audio decoding processing unit 16: Main unit operation keys 18: Remote control receiving unit 24: Remote control

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/93 H04N 5/93 Z

Claims (4)

[Claims] 1. A reproduction control unit for performing double-speed reproduction processing or basic processing on a recording medium, and a command input unit for inputting a basic processing command from an operator, wherein the reproduction control unit performs double-speed reproduction in a double-speed direction. During the process,
When the basic processing instruction is input, the reproducing apparatus has a double-speed reproduction processing function, wherein the basic processing is performed by returning a predetermined amount in the direction opposite to the double-speed direction. 2. A reproducing apparatus having a double-speed reproduction processing function according to claim 1, wherein a recording location of a recorded content on a recording medium is specified by a reproduction absolute time of each recorded content. A playback device having a double-speed playback processing function, wherein a basic process is executed by designating a playback absolute time returned by a predetermined amount in the reverse direction. 3. A reproducing apparatus having a double-speed reproduction processing function according to claim 1, wherein the basic processing is reproduction processing for a recording medium. 4. A step of performing double-speed reproduction processing on a recording medium. When a basic processing command is input by an operator during execution of the double-speed reproduction processing in the double-speed direction, a predetermined amount is returned in a direction opposite to the double-speed direction. Performing a basic process. A reproducing method having a double-speed reproducing function.