JP4273441B2 - Signal reproduction device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
Main departureAkira relates to a signal reproducing apparatus for reproducing a program composed of a video signal and / or an audio signal by using a plurality of signal recording / reproducing means.
[0002]
[Prior art]
  Various methods and configurations have been proposed and put into practical use as signal reproduction apparatuses for recording a program composed of video and / or audio signals, reproducing and outputting in accordance with commands. There are various means for recording signals by the signal reproducing apparatus. For example, a means for using a take-up magnetic tape as a recording medium as seen in a VTR, and a magnetic disk as seen in a hard disk drive. There are means for using a medium, and means for using a semiconductor recording element as a recording medium as seen in a RAM disk drive.
[0003]
  The various recording means described above have advantages and disadvantages from the two viewpoints of access speed to the recording signal to be reproduced and recording capacity for recording the signal.
  That is, the recording means using the winding type magnetic tape has the advantage that the recording capacity is relatively large, but on the tape for a long time in order to access the signal recorded in the tape and starting reproduction. Winding has to be continued, and the access speed is slow.
[0004]
  The recording means using the magnetic disk has a disadvantage that the recording capacity is relatively small, but the access speed is high because the magnetic head can instantaneously move on the disk surface to access a desired signal.ThatThere are advantages.
  Similarly, the recording means using the semiconductor recording element has a disadvantage that the recording capacity is relatively small, but the access speed is extremely high because a desired signal is accessed regardless of the mechanical method.WhenThere is an advantage.
[0005]
  Since each recording means has such advantages and disadvantages, for example, a user using a VTR using a winding type magnetic tape recording means records and reproduces a program composed of video / audio signals for several hours such as a movie. Although it is possible to play a desired program from a plurality of programs recorded on one video tape, the playback head is positioned so that the playback head is positioned at the start position of the signal recording the desired program. There is an inconvenience that a winding operation is started and it is necessary to wait for a long time until the winding operation is completed.
[0006]
  In addition, a user who uses a hard disk drive using magnetic disk recording means or a RAM disk drive using semiconductor recording means can use a high access speed to relatively read a desired program recorded on a medium. While there is an advantage that playback can be started and watched in a short time, there is the inconvenience that it is difficult to use for recording and playback of video and audio signals for several hours such as movies. It was.
[0007]
  For the purpose of solving the above-mentioned problem that there is no recording / reproducing means having both a large recording capacity and a high access speed, a combination of recording / reproducing means having a plurality of different access speeds and recording capacities is used. Recording and playback devices have been proposedHave.
  For example, in the invention described in Japanese Patent Application Laid-Open No. 9-69275, a recording / reproducing apparatus (hereinafter referred to as hybrid recording / reproducing) that uses a plurality of recording / reproducing means having different access speeds and switches a means for reproducing and outputting a signal during signal reproduction. Also referred to as a device). This proposal is described below.
[0008]
  The hybrid recording / reproducing apparatus according to the above prior art will be described with reference to FIGS. FIG. 1 is a configuration diagram of a hybrid recording / reproducing apparatus according to the prior art. FIG. 2 is a schematic diagram for explaining the arrangement of recording signals in the hybrid storage / reproducing apparatus according to the prior art.
[0009]
  MaFirst, using FIG., Hybrid recording / reproducing apparatus according to prior art100ConfigurationThe theoryLight up.
  In FIG. 1, the hard disk drive(HAlso called DD)101Is a recording / reproducing means using a magnetic disk medium, a hard disk which is a magnetic disk102And hard disk102Disk control unit for accessing and writing / reproducing signals103Including.
[0010]
  Videotape recordDa ((Hereinafter also referred to as VTR)104Is a video cassette tape which is a recording / reproducing means using a take-up magnetic tape and is a detachable take-up magnetic tape106And video cassette tape106Tape controller for accessing and writing / reproducing signals105Including.
[0011]
  Operation part108Is an operation means realized by an operation switch, a remote controller or the like, and a user inputs a command to operate the apparatus. Control unit107Is the user108Controls the entire device according to commands entered from, especially hard disk drives101And VTR104Access and signal writing / playback.MoreControl section107Is a hard disk drive101And VTR104Selects a playback signal to be output by the hybrid recording / playback device100Output terminal as output signal109It has a function to output to the outside via.
  User is output terminal109For example, TV moni not shownTConnected, hybrid recording and playback device100Appreciate the video / audio signals output by.
[0012]
  NextNext, using FIG.Hybrid recording / reproducing apparatus according to next technology100Method of recording signalThe theoryLight up.
  In FIG. 2, (A) is a hard disk.102Shows the arrangement of the recording signal at d0,dB,dm is a position indicating the physical position on the magnetic disk where the signal is recorded. The meaning of “position” will be described later.
[0013]
  In FIG. 2, (B) is a video cassette tape.106Shows the arrangement of the recording signals at r0,rx,rB, rA,rs is a position indicating the physical position on the magnetic tape where the signal is recorded.
[0014]
  The physical arrangement method for recording signals on the magnetic disk is not limited to the one-dimensional straight line shown in FIG.THowever, in order to make the following explanation clearer, a virtual data structure arranged in a straight line is used, and FIG.), (In B), “position” is used as a word indicating a position on a straight line.
  In FIG. 2, (A), (B) Signals recorded together are recorded from left to right according to the time sequence.
[0015]
  In FIG. 2B, P1, P2, and P3 respectively indicate areas on the tape where signals from the beginning to the end of one program are recorded. In FIG. 2A, p1,p2,Each p3 is the program P1,P2,An area on the disc in which a signal up to the middle including the head portion of P3 is recorded is shown.
  P1, P2, P3 and p1,p2,p3 may be used in the following description to mean a signal or program recorded in each area.
  Next, a hybrid recording apparatus according to the prior art will be described with reference to FIGS.100The operation of will be described.
[0016]
  Now, a program that a user wants to play, for example, a movieThe figureIt is assumed that the information is recorded in advance in the area indicated by P1 in 2 (B).
  That is, in FIG. 2B, it is assumed that the first signal of the program is recorded at the position r0 and the last signal is recorded at the position rA.
  The signal is recorded together with the address. The “address” is a code that is recorded along with the signal and identifies a position in the signal. For example, the code may be a code attached to each video frame of the video signal. One part of the signal recorded in time order, for example one video frame, can be identified.
[0017]
  Also, the partial signal consisting of the signal from the head signal to the middle of the signal to be reproduced indicated by P1 is a hard disk.102Is also recorded in p1. In p1 of FIG. 2A, the same signal as the first signal of P1 is recorded at d0 on the disk, and the same signal as the signal in the middle of P1 is recorded at the position of dB on the disk. The same signal as the signal P1 is not recorded at the position.
[0018]
  MoreHard disk102The signal having the same address as the signal recorded at the dB position above is a video cassette tape.106In FIG. 2, it is assumed that the position is recorded at the position rB in FIG.
  Video cassette tape106One program P1 recorded between r0 and rA of ther0On the wayrBThe same signal as that recorded until102Are also recorded between d0 and dB.
[0019]
  By the way, the conventional technologyAffectHybrid recording / reproducing device100In the hard disk102The upper positions d0 and dB need to satisfy the following conditions.
  Ie disk controller103Hard disk102T0 is the time required to access the d0 position, start signal reproduction, and complete reproduction up to the dB position.105Currently video cassette tape106TS is the time required to start playback of the signal at the position of rB after moving from the position accessed at rS (rS in FIG. 2B).106All positions that may exist abovesotS <tB must be satisfied.
  By satisfying this condition, as explained laterHard disk drive 101 and VTR 104Can take over signal playback without interruptionCanThe
[0020]
  Next, a hybrid recording / reproducing apparatus according to the prior art having the above-described configuration and a recorded signal100The operation of will be described.
  The user inputs a command for instructing reproduction of P1, which is a program to be reproduced, to the operation unit.108Input from107The hard disk102Disk controller to play the signal from d0 position103To instruct.
  Hard disk drive according to the above instructions101Control signal107Is the output terminal109At the same time output to the outside via the tape controller105Against video cassette tape106The rB position is instructed to access a reproducible position.
[0021]
  Note that, as described above, the hard disk responds to the command to play the program P1.102The signal playback starts from the d0 position of the video cassette tape at the same time.106To start access to a position where the rB position can be replayed, ObedienceAlthough there is no clear description in Japanese Patent Laid-Open No. 9-69275 shown as an example of the conventional technology, the control unit107Need to be controlled in the following procedure.
[0022]
  That is, the control unit107It is necessary that recording arrangement information of a signal recording a program is stored in an internal memory or the like.
  The recording arrangement information is, for example, the head part of the program P1d0The middle part where playback output is switched fromdBUntil the signal is hard disk102Which position is recorded aboveHeelInformation and the part to be switcheddBWhat is the address of the signal (hereinafter referred to as Ac)HeelAnd the middle part to be switchedrBTo the end of program P1rAUntil the signal is video cassette tape106Which position is recorded aboveHeelThis is information.
[0023]
  Control unit107Receives the command to play P1 and refers to the recording arrangement information, and the partial signal recording the program P1 is stored on the hard disk.102Knowing that it has been recorded up to dB below the d0 position, start playback and signal output from d0,DIt is known that the address of the signal recorded in B is Ac and the signal of the same address is recorded at the position rB on the tape.
[0024]
  more thanUse the means as described for the hard disk102Disc controller to reproduce signal from d0 position103However, a recording device using a magnetic disk has a feature of relatively high speed access., SystemMibeFrom 107Hard disk in a relatively short time according to instructions102Since the output of the playback signal starts, the user can output the desired signal in a relatively short time without waiting for a long time until the playback is started as in the case of using a VTR that requires a relatively long access time. Playback can be started.
[0025]
  On the other hand, the control unit107Hard drive101The address of the signal to be played back and VTR104Is constantly monitoring the address of the signal that can be accessed and played by the video cassette tape.106The upper rB position is accessed so that it can be played, and the hard disk102The upper dB position is playedTwoPositiondB, rBAddressAcWhen the two match, the tape controller105Against video cassette tape106Instructed to start the signal playback of, HaHard disk drive101In response to the above instruction, the VTR104The signal output byOutPower terminal109To the outside via. Hard disk drive101Stop playback.
[0026]
  By the way, hard disk102Since the positions d0 and dB of the leading and trailing ends of the signal recorded in the above are set so as to satisfy the above-described condition (tS <tB), VTR104Video cassette tape106It is the hard disk that accesses the position where the rB position can be reproduced.102There is no delay from the time when the reproduction of the signal recorded at the dB position is completed.
[0027]
  Therefore, hard disk102Video cassette tape before the end of playback106Access to the position where the rB position can be reproduced is completed, and the tape controller105Stops at that position and thenHard disk drive 101 and VTR 104Video cassette tape as described above when the signal address matches106Since the reproduction starts from the rB position and the reproduction signal is switched, the hybrid recording / reproducing apparatus100Can reproduce and output the program P1 to be reproduced without interruption.
[0028]
  Namely, a hybrid recording / reproducing apparatus according to the prior art100According to the above, it is possible to access a large-capacity recording signal such as a movie by starting at a relatively high speed, and to play back without interruption in the middle.
  For clarity of explanation, the video cassette tape shown in FIG.106Has a signal for recording the program P1 at its head.r0To the endrAHowever, the signal from r0 to the position immediately before the position where the rB position can be reproduced is not necessarily recorded, and the signal from the position where the rB can be reproduced to the rA position is not necessarily recorded. Video cassette tape106If it is recorded in the above, the above operation is possible.
  Hard disk as well102The signal up to dB of the reproduction switching position registered in the recording arrangement information is recorded above, and the signal of the program P1 is not recorded after that, but it goes without saying that it can be recorded. .
[0029]
[Problems to be solved by the invention]
  By the way, the hybrid recording / reproducing apparatus according to the prior art described above.100Has the following problems to be solved.
[0030]
  The problem is that it cannot cope with the fast-forward playback described below.
  In a VTR device or the like, there is an operation method called fast-forward reproduction in addition to signal reproduction at normal speed. For example, the tape is run at 3 times the normal speed, and the video and audio are played at 3 times the speed so that the user can finish watching the program in a short time or cue the scene he / she wants to watch.DoIt is a function for.
[0031]
  However, as mentioned above,102Since the partial signal (from d0 to dB) recorded in the above is an amount that does not interrupt the playback at normal speed playback, fast-forward playback from the beginning of program playback or a hard disk102Switch to fast-forward playback during playback at normal speed.Get angryAnd video cassette tape106Before accessing the rB position where playback is possible.102There is a possibility that the reproduction of the dB position ends, and in this case, the reproduction of the signal is interrupted in the middle.
[0032]
  In order to avoid this problem, even if fast-forward playback is always performed, a sufficient amount of partial signals are stored on the hard disk so that signal playback is not interrupted.102It is uneconomical to record on a hard disk that has a relatively small recording capacity102. A hybrid recording / reproducing apparatus which is not realistic from the characteristics of 2 and which combines a plurality of signal reproducing means having different access speeds and storage capacities to make use of the respective features100It will also lose the merit of.
[0033]
  Main departureThe present invention has been made in view of the situation as described above, and the problem to be solved by the invention is that a plurality of signal reproducing methods are used.StepIt is an object of the present invention to provide an apparatus that reproduces various signals and that does not interrupt signal reproduction even if fast-forward reproduction is performed.
[0034]
[Means for Solving the Problems]
  To solve the above problemsMain departureAkira is a continuous video signal with an address for identifying the position in the signal.And a first signal reproducing means (101) having a first access speed for reproducing the first recording medium (102) on which the signal from at least the beginning of the program including at least one of the sound signal and the audio signal is recorded to a predetermined position. And a second access speed lower than the first access speed for reproducing the second recording medium (106) on which the signal from at least the predetermined position to the end of the program is recorded. A signal reproducing means (104); and a control means (107) for controlling the first and second signal reproducing means, wherein the control means is when the program is not reproduced or by the first signal reproducing means. When a fast-forward playback command for the program is received during playback of the program, when the address associated with the signal at the predetermined position of the program recorded on the first recording medium is Ac, The signal reproduction means controls to access the position where the reproduction of the signal accompanied by the address Ac of the program recorded on the second recording medium is started, and the first signal reproduction means performs fast-forward reproduction. The time required to complete the fast-forward reproduction up to the signal accompanied by the address Ac is tN, and the second signal reproduction means finishes the access and starts the fast-forward reproduction of the signal accompanied by the address Ac. When tM ≦ tN is satisfied when the time is tM, the first signal reproducing means is controlled to perform fast-forward reproduction of the program, and when tN <tM is satisfied, the first signal reproduction is performed. When the time required for the means to start reproduction and completion of the reproduction of the signal accompanied by the address Ac is tP, the first signal reproduction means is the reproduction speed satisfying tM ≦ tP. And when the address of the signal of the program reproduced by the first signal reproduction means and the address of the signal reproducible by the second signal reproduction means coincide with each other, A signal reproduction device (100) characterized in that the second signal reproduction means controls to start fast-forward reproduction of the program and output it as an output signalI will provide a.
[0035]
  In this configuration, the first recording medium is, for example, a hard disk or a semiconductor memory.
[0036]
DETAILED DESCRIPTION OF THE INVENTION
  Main departureOne embodiment of the present invention will be described with reference to FIGS.
  Signal reproduction apparatus according to the present embodiment100Is a hybrid recording / reproducing apparatus according to the prior art described above with reference to the configuration diagram of FIG. 1 and the schematic diagram of the recording signal arrangement of FIG.100It operates using the same configuration and recording signal arrangement as the107Only the control is different.
[0037]
  Therefore, in order to avoid duplication of explanation, the explanation of the configuration of the apparatus and the recording arrangement will not be repeated, but will be limited to the contents of control different from the apparatus according to the prior art.Do.
  Flow chart shown in FIG.200Is a signal reproducing apparatus according to the present embodiment100Shows the temporal transition of the interrupt control that occurs when the user inputs a command to play fast forward during signal reproduction in normal operation.
[0038]
  In the following description, a signal reproducing apparatus100The program recorded on the deviceP1The position that is currently being played is the hard disk in FIG.102It is assumed that the dm position is included in the upper region p1.
  In FIG. 3, when the user inputs a command to start fast-forward playback and an interrupt occurs, the medium that is currently playing the current signal firstHard deDisc102It is determined whether or not (step S201). N (NO)Video cassetteLoop106Thus, the fast-forward playback in the normal VTR device is started (step S202), and the control exits from the interrupt control.
  As explained earlier, in this case the hard disk102Since the signal recorded in is being reproduced, the process proceeds to Y (YES).
[0039]
  When Y is determined in step S201, it is determined whether or not a conditional expression tM ≦ tN is satisfied using a variable described below. (Step S203)
[0040]
  Where tM is the current tape controller105Access positionrs2 is a time required to access a position where the rB position in FIG. 2B can be reproduced, and tN is a disk control unit.103Is a hard disk on which a signal having the same address as that of the rB position is recorded by starting fast-forward playback from the currently playing position, dm102This is the time to fast-forward playback of the dB position.
[0041]
  If N in step S203, is the current time?Hard deDisc102When fast-forward playback is started, the dB position is played back before the position where the rB position can be played back is accessed, and the playback signal is interrupted.Hard deDisc102Is paused (step S204), and a screen display signal such as “Preparing for fast-forwarding” is output to notify that waiting time is required until the start of fast-forwarding playback, thereby reducing the stress felt by the user.
[0042]
  The screen display signal can be a single screen display that conveys a message to the user, or can be pausedHard deDisc102May be displayed on the screen superimposed on the still image output. Next equipmentIs a video cassetteLoop106Access to the reproducible position of the rB position is started (step S206).
  MoreThe time required for the device to access the above-mentioned tM, that is, the position where the rB position can be reproduced.Is the video cassette tape 106As the access operation progresses, the value becomes smaller every moment, so loop control is performed to continue monitoring until the condition tM ≦ tN is satisfied (step S207). When the condition is satisfied, the process proceeds to step S209.
[0043]
  On the other hand, if it is Y in step S203, fast-forward playback can be performed immediately without interruption of the signal. Therefore, access to a position where the rB position of the tape can be played back is started (step S208), and fast-forward playback of the disk is immediately started. Start (S209).
  Furthermore, the device is a tape controller.105Monitoring of the address of the signal being accessed is continued (step S210), and if the access reaches a position where rB can be reproduced, the access operation is stopped (step S211), and switching of the reproduction signal is awaited in this state.
[0044]
  That is, the deviceHard deDisc102Monitors the address of the signal being played from, VTR104When you start fast-forward playbackHard disk drive 101And VTR104Waiting for the timing when the address of the reproduced signal coincides with Ac (step S212). If this condition is satisfied, the tape fast-forward playback is started (step S213), and then the playback signal is monitored.Hard disk drive 101And VTR104Waiting for the addresses of the playback signals to be the same (step S214).
[0045]
  When the same address is reached, the signal playback device100Is switched from the disk playback signal to the tape playback signal (step S215), the signal playback of the disk is stopped (step S216), and the interrupt control is exited.
  The signal reproduction device (100) according to the present embodiment isBecause it is configured to operate as described above, EarlyEven in the case of performing feed reproduction, the reproduction signal can be output without being interrupted.
[0046]
  In addition to the configuration described above, a configuration may be adopted in which control is performed as follows.
  That is, the video cassette tape shown in FIG.106Above, the tape controller in the above description105Is a position that goes back slightly in time series from rBrxControl is performed so that access is performed using a position where the image can be reproduced as a target position.
  When the access is completed, the tape controller105Stops at a position where rx can be played and waits, and then starts fast-forward playback.104Playing rB positionHard disk drive 101Butharddisk102At the same time that the above dB position is played back, the tape controller105Is controlled to start fast-forward playback.
[0047]
  The reason for this configuration is VTR104Since there is a slight time lag after the start of playback until the tape running is stable and a stable playback signal is obtained, start the playback operation early.Hard disk drive 101To VTR104This is to more reliably switch the reproduction output signal to the.
  In this case, the time parameter described above, tM, is a video cassette tape.106On the current tape controller105The location the is accessingrSIs defined as the time from the start of access to the position where the rx position starts to be played and the start of fast-forward playback as soon as the access is completed until the rB position is played back.
[0048]
  In the above description, the control when a fast-forward playback command is generated in a state where playback is normally performed at a normal speed, which seems to be frequently used in practice, has been described. However, other signal playback is performed. It is also possible that a command to play fast-forward from the beginning of the program occurs without. ThisCan be handled by the control described above.CanThe
[0049]
  That is, in the flowchart shown in FIG. 3, the time from start of fast-forward playback from the position d0 at which the head portion of the program P1 is recorded until reaching dB is determined as tM. ”(Yes in step S201), the disc playback is not paused in step S204, and nothing is done (reproduction is not started), and in step S209harddisk102By performing the control to start fast-forward playback from the d0 position, the same effect as described above that the signal is not interrupted even when fast-forward playback is performed from the beginning of the program can be obtained.
[0050]
  Note that the apparatus according to the present embodiment performs control as described above.107IsSignal regenerationapparatus100OrHard disk 102 and video cassette tape 106From the recorded layout information102Top and video cassette tape106Although it is necessary to be configured to read the information on the arrangement position of the recording signal and control the apparatus, it is the same as described in the apparatus according to the prior art, Such an apparatus may be further configured as follows.
[0051]
  That is, the control unit107In addition to the configuration in which the recording arrangement information is stored in the internal memory of the control unit,107Separate recording means, eg semiconductor memoLiSignal reproduction device100It may be placed inside and recorded on it, or a hard disk102Internal recording area and video cassette tape106The recording arrangement information may be recorded at a specific recording location such as the head portion of the tape.
[0052]
  In addition, video cassette tape106For example, in the case of cell video (video tape on which a program is recorded in advance), etc., the table of contents information of the program contained in the tape is barcoded. Stick the sticker indicated on the surface of the cassette, VTR104Reads the recorded layout information on the sticker.OrYou may comprise.
  Further, a menu selection screen comprising a list display of reproducible programs including P1 from the recording arrangement information obtained by the method as described above is constructed, and a television monitor is formed.Etc.The program P1 may be selected by the user from the menu selection screen.
[0053]
  Next, when performing fast forward playback in the present embodiment, control different from the above is performed by the control unit.107In the same manner, an example in which a reproduction signal without interruption is obtained will be described.
  That is, the flowchart of FIG.200In the case of N in step S203, that is, when the fast-forward playback of the disc is started immediately, when the signal playback is interrupted, the playback of the disc immediately starts at a playback speed slower than the fast-forward playback specified by the device or the user. The configuration is as follows.
[0054]
  The playback speed slower than the designated fast forward playback is a speed that satisfies the following condition.
  That is, tM in the above-described conditional expression (time from the current time until completion of access to the position where the rB position on the tape is started) and tP are newly started immediately at a certain playback speed from the current time. Time taken for the dB on the disc to playWhenIs a reproduction speed that satisfies tM ≦ tP.
[0055]
  Playback control continues playback of the disc at a constant speed slower than the specified fast-forward playback that satisfies the above conditions, and the playback signal output by the device when the disc reaches the dB position is switched from the disc to the tape output. After switching, fast-forward playback at the speed specified by the tape may be performed, or if the condition of tM ≦ tP is satisfied, the disc playback is started at a speed slower than the above example. And tape controller105As the access of the disk approaches the position where the target rB position starts to be reproduced, the reproduction speed of the disk is gradually or stepwise increased, and fast-forward reproduction at a speed designated at the time of switching of the reproduction signal is performed. Further, it may be configured such that the change in the reproduction speed at the time of switching is not noticeable.
[0056]
  By adopting such a control structure, a playback signal that is uninterrupted even in fast-forward playback can be obtained.WhenIn addition to obtaining the same effect as the above-described configuration, the playback starts immediately in response to a user command to start fast-forward playback, although the speed is different from the specified fast-forward playback. , The stress felt by users is reducedWhenThere is an effect.
[0057]
  In the description of the present embodiment, a plurality of signal reproducing means having different access speeds and recording capacities are used.Hard disk drive 101andVideo tape recorder 104I explained usingMain departureThe present invention is not limited to this method, and the effect of the invention is similarly exhibited even when other types of signal reproducing means are used.
[0058]
  For example, as a recording / reproducing means having a high access speed and a small recording capacity, a semiconductor memoryLiAs a recording / reproducing means having a slow access speed and a large recording capacity, for example, an optical disc change configured to store a plurality of optical discs and perform signal reproduction from a specific recording position of a specific optical disc in response to a command.Re-A raw device is also conceivable.
  Further, it goes without saying that the effect is exhibited without being restricted by the signal system of video and / or audio signals for recording a program and the distinction between analog and digital.
[0059]
【The invention's effect】
  As explained in detail above,Main departureAkira has several signal recording / playback operators with different access speeds.StepUse the fast-access recording / playback device to start signal playback.SteppedRecorded and played back, and the access speed is slow.SteppedSignal playback device that switches to the other playback outputIn placeIn this way, a device can be obtained in which signal playback is not interrupted even if fast-forward playback is performed.WhenThere is an effect.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a schematic configuration of a signal reproduction device according to an embodiment of the present invention;
FIG. 2 shows a signal reproducing apparatus according to an embodiment of the present invention.RuIt is a layout diagram of recording signals.
FIG. 3 shows a signal reproducing apparatus according to an embodiment of the present invention.RuhayaIt is a flowchart which shows the interruption control at the time of forward reproduction.
[Explanation of symbols]
  100 Signal reproduction device
  101 Hard disk drive(First signal reproducing means)
  102 hard disk(First recording medium)
  103 Disk controller
  104Video tape recorder (second signal reproduction means)
  105 Tape control unit
  106 Video cassette tape(Second recording medium)
  107 Control unit
  108 Operation unit
  109 Output terminal

Claims (2)

Reproducing the first recording medium recording the signal of up to at least the top than Jo Tokoro of position of a program including at least one of video and audio signals for successive addresses for specifying the position in the signal is accompanied a first signal reproducing means having a first access speed you,
A second signal reproduction means having a first slow second access speed than the access speed for reproducing the second recording medium recording the signal to the end from at least the position of the plant constant for the program,
Control means for controlling the first and second signal reproducing means;
With
The control means includes
Upon receiving a fast-forward playback instruction of the program during playback of the program by the non-reproduction or the first signal reproducing means of the program, the first signal of the position of the plant constant for the recording medium on the recorded the program When the address associated with the address is Ac , the second signal reproduction means controls to access the position where the reproduction of the signal associated with the address Ac of the program recorded on the second recording medium starts. And
The time required for the fast signal reproduction from the first signal reproducing means to start the fast forward reproduction to the signal accompanied by the address Ac is tN, the second signal reproducing means terminates the access, and the address Ac is When the time required to start fast-forward playback of the accompanying signal is tM, when tM ≦ tN holds , the first signal playback means controls the fast-play playback of the program,
When tN <tM is satisfied, when the time required for the first signal reproducing means to start reproduction and the reproduction of the signal accompanied by the address Ac is tP, tM ≦ tP is satisfied. Controlling the first signal reproducing means to reproduce the program;
The address of the program signal wherein the first signal reproducing means for reproducing, when the second signal reproducing means matches the address of renewable signal, the second signal reproducing means of the program A signal reproduction apparatus characterized by controlling to start fast-forward reproduction and output as an output signal. 2. The signal reproducing apparatus according to claim 1, wherein the first recording medium is a hard disk or a semiconductor memory .

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