JP2005039648A - Signal reproducing and recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that unneeded recorded parts are created on a digital recording medium by recording a defect of a video signal resulting from some cause, such as a flaw on a tape and an unrecorded part as they are at the time of dubbing the video signal recorded on the tape to a digital recording medium composed of an HDD, a DVD, etc. <P>SOLUTION: A video signal compensation circuit 57 controls a video memory 34 to operate so as to compensate video with a defect existing and video with an unrecorded part with another video on the basis of a defect detection signal and an unrecorded part detection signal from a video signal defect detection circuit 53, a synchronizing signal defect detection circuit 54 and a control signal defect detection circuit 54, whereby dubbing an excellent video signal with a defect and an unrecorded part removed at the time of performing dubbing from the tape 31 to the digital recording medium 36. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention includes a tape-shaped recording medium in which a tape-shaped recording medium represented by a video tape and an optical disk or a magnetic disk represented by a DVD or a hard disk (hereinafter referred to as HDD) are loaded or installed in one casing. The present invention relates to a signal reproducing / recording apparatus capable of dubbing a signal recorded on a DVD or HDD.

  In recent years, home AV equipment for recording television programs is being replaced by high-capacity digital recording devices such as DVDs and HDDs from conventional video tape recorders (VTRs). Among them, an increasing number of users leave video and audio signals that have been recorded on video tapes with VTRs by dubbing them on DVDs and HDDs. As a device effective for such dubbing, a tape-shaped recording medium typified by video tape and an optical disk or magneto-optical disk typified by DVD or HDD are loaded or equipped in a single casing and recorded on the tape-shaped recording medium. Products for dubbing the recorded signal onto a DVD or HDD are becoming widespread.

  FIG. 13 is a block diagram showing the overall configuration of a conventional signal recording / reproducing apparatus. In the figure, reference numeral 31 denotes a tape which is a tape-like recording medium on which at least a video signal is recorded, in which an audio signal and a control signal are recorded in addition to the video signal. A reproduction signal processing circuit 32 is a reproduction signal processing means for reproducing a video signal recorded on the tape 31 and detects a dropout portion, and 33 is an analog digital signal for converting an analog signal from the reproduction signal processing circuit 32 into a digital signal. An A / D conversion circuit 34, which is a conversion means, is a video memory which is a video signal storage means for temporarily storing a digital video signal from the A / D conversion circuit 33, and includes a plurality of memories, a memory control circuit, etc. ing. Reference numeral 35 denotes a stream generation circuit which is a stream generation means for generating a video stream from a video signal from the video memory 34. Reference numeral 36 denotes a recording medium for recording the stream signal from the stream generation circuit 35, from a digital recording medium such as a DVD or HDD. Become. In this configuration, the above configuration is provided in one housing.

  FIG. 12 is a perspective view showing the configuration of an integrated device of a VTR and a DVD or HDD. In FIG. The disc is a disk-shaped recording medium, 42 is an insertion slot into which the video tape 44 can be inserted, and 43 is a tray into which the disk 45 can be loaded. In this configuration, the tray is used, but as an insertion slot in the case of the slot-in type Also good. Reference numeral 46 denotes an HDD built in the main body 41. In this configuration, the disk 45 and the HDD 46 may coexist or may be configured to include either one.

  FIG. 11 is a block diagram showing the internal configuration of the video signal storage circuit. 34b is a first memory in which a digital video signal output from the A / D conversion circuit 33 is written, and corresponds to a so-called buffer memory. Reference numeral 34c denotes a second memory to which the digital video signal read from the first memory 34b is written, and reference numeral 34a denotes a memory control circuit that performs writing / reading control of the first and second memories 34b and 34c.

  The operation of the conventional signal recording / reproducing apparatus configured as described above will be described below.

  First, in FIG. 12, when the signal recorded on the video tape 44 is dubbed to the disk 45 or the HDD 46, the video tape 44 is first inserted into the insertion slot 42, loaded into the main body 41, and put into a reproduction standby state. Next, an eject switch (not shown) or the like is operated to pull out the tray 43, the disk 45 is placed on the tray 43, the tray 43 is again inserted into the main body 41, and a recording standby state is set. Here, the loading method of the video tape 44 and the disk 45 may be reversed or simultaneous. Even if the disk 45 is not inserted, since the HDD is built in the main body 41, it is possible to enter a dubbing standby state. Next, the VTR side playback button and pause button provided on the main body 41 are operated to set the VTR side to playback standby state, and the disk side recording button and pause button are operated to record the disk side. Set to the standby state. In this configuration, the VTR side and the disc side are operated independently to shift to the dubbing standby state. However, by operating one dubbing dedicated button (so-called one-touch dubbing button) once, the VTR It may be a function of putting the disc side and the disc side into a dubbing standby state.

  Next, the dubbing operation will be described with reference to FIG.

When the dubbing operation is started, a signal reproduced from the tape 31 by a head or the like is first input to the reproduction signal processing circuit 32 and the control signal reproduction circuit. The reproduction signal processing circuit 32 performs various signal processes for converting an input signal into an analog video signal. The video signal output from the reproduction signal processing circuit 32 is converted from an analog video signal to a digital video signal by the A / D conversion circuit 33 and input to the video memory 34. The video memory 34 arranges and outputs the input digital video in time series. The output signal is generated by the stream generation circuit 35 to generate a stream signal for recording on the recording medium 36. The generated stream signal is digitally recorded on a digital recording medium 36 such as an HDD or a DVD.
JP-A-10-105112

  However, in the above conventional configuration, when the video signal recorded on the tape is dubbed to a digital recording medium such as an HDD or a DVD, the scratches on the tape as shown in FIGS. The video signal defect due to some cause and the non-recorded part as shown in FIGS. 4C and 4D are recorded as they are, and there is a problem that an unnecessary recording part is formed on the digital recording medium. It was.

  In view of the above problems, the present invention eliminates a video signal defect caused by some cause such as a scratch on the tape and a non-recorded portion when dubbing a video signal recorded on a tape to a digital recording medium such as an HDD or a DVD. An object of the present invention is to provide a signal reproducing / recording apparatus capable of saving the storage capacity of a medium because unnecessary portions are not recorded on a digital recording medium by being automatically deleted.

  To achieve this object, the signal recording / reproducing apparatus of the present invention comprises at least a tape on which a video signal is recorded, a reproduction signal processing means for reproducing the video signal recorded on the tape and detecting a dropout portion, From the A / D conversion means for converting the analog signal from the reproduction signal processing means into a digital signal, the video signal storage means for temporarily storing the digital video signal from the A / D conversion means, and the video signal storage means Stream generating means for generating a video stream from the video signal, a recording medium for recording the stream signal from the stream generating means, a control signal reproducing means for reproducing a synchronization signal and a control signal reproduced from the tape, First detection means for detecting successive dropout periods reproduced by the reproduction signal processing means; A second detecting means for detecting a non-recording period of the synchronization signal reproduced by the means; a third detecting means for detecting a non-recording period of the control signal reproduced by the control signal reproducing means; Deletion control means for deleting a part of the digital video signal stored in the video signal storage means based on the detection result detected by the third detection means.

  As a result, when a video signal recorded on a tape is dubbed to a digital recording medium such as an HDD or a DVD, a video signal defect due to some cause such as a scratch on the tape and a non-recorded portion are automatically deleted. As a result, unnecessary portions are not recorded on the digital recording medium, so that the storage capacity of the medium can be saved.

  As described above, according to the present invention, when a video signal recorded on a tape is dubbed to a digital recording medium such as an HDD or a DVD, the video signal is defective due to some cause such as a scratch on the tape, and there is no recording. By automatically deleting the portion, unnecessary portions are not recorded on the digital recording medium, so that the storage capacity of the medium can be saved.

  Further, by automatically deleting and interpolating the above portion, it is possible to improve the video quality when reproducing the video signal on the digital recording medium.

  The inventions according to claims 1 to 6 of the present invention include a tape on which at least a video signal is recorded, a reproduction signal processing means for reproducing the video signal recorded on the tape and detecting a dropout portion, and the reproduction A / D conversion means for converting analog signals from the signal processing means into digital signals, video signal storage means for temporarily storing digital video signals from the A / D conversion means, and video from the video signal storage means Stream generating means for generating a video stream from the signal, a recording medium for recording the stream signal from the stream generating means, a control signal reproducing means for reproducing a synchronization signal and a control signal reproduced from the tape, and the reproduction signal First detection means for detecting successive dropout periods reproduced by the processing means, reproduced by the control signal reproduction means All or one or more of the above three detection means, the second detection means for detecting the non-recording period of the start signal, and the third detection means for detecting the non-recording period of the control signal reproduced by the control signal reproducing means Stored in the video signal storage means based on the detection results detected by the detection means based on combinations of two or less and all or one or more of the first to third detection means. Deletion means for deleting a part of the digital video signal or interpolation means for complementing may be provided, and selection means for enabling selection of these deletion / interpolation means may be added.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a block diagram showing the overall configuration of the first embodiment, FIG. 11 is a block diagram showing the configuration within the video signal storage means, and FIGS. 5 and 6 are diagrams within the video signal storage means of FIG. FIG. 8 shows the behavior of the memory. FIG. 8 shows a signal comparison with the normal state of the signal detected by the first detection means, FIG. 9 shows the second detection means, and FIG. 10 shows the third detection means. ing.

  In FIG. 1, reference numeral 31 denotes a tape, which is a first recording medium on which at least a video signal is recorded, in which an audio signal and a control signal are recorded in addition to the video signal. In this embodiment, the tape 31 is assumed to be an analog recording video tape, but it may be a digital video tape recorded in the DV format. When the digital video tape is used, the A / D conversion circuit 33 in FIG. 1 is not necessary, and the reproduction video signal (digital) output from the video signal reproduction circuit 32 is directly input to the video signal storage circuit 34. Reference numeral 32 denotes a reproduction signal processing circuit which is a reproduction signal processing means for reproducing a video signal recorded on the tape 31 and detects a dropout portion, and 51 is a control for reproducing a synchronization signal included in the video signal recorded on the tape 31. A control signal reproduction circuit which is a signal reproduction means, 52 is a control signal reproduction circuit which is a means for reproducing a control signal recorded on the tape 31, and 33 is an analog digital signal for converting an analog signal from the reproduction signal processing circuit 32 into a digital signal. An A / D conversion circuit 34, which is a conversion means, is a video memory which is a video signal storage means for temporarily storing a digital video signal from the A / D conversion circuit 33, and includes a plurality of memories, a memory control circuit, and the like. ing. Reference numeral 35 denotes a stream generation circuit which is a stream generation means for generating a video stream from a video signal from the video memory 34. Reference numeral 36 denotes a digital recording medium which is a second recording medium for recording the stream signal from the stream generation circuit 35. Digital recording media such as optical discs (DVD, CD, etc.), hard disks (HDD), magneto-optical discs (MD, MO, etc.), semiconductor memories (memory cards, etc.).

  Reference numeral 53 denotes a video signal defect detection means which can detect a dropout period based on the information of the dropout portion shown in FIGS. 4 and 8 detected by the video signal reproduction circuit 32 and can have it as defect period information. The signal defect detection circuit 54 detects the missing part of the horizontal synchronization signal due to the defect shown in FIGS. 4A and 9A based on the control signal reproduced in 51 and has it as defect period information. The synchronization signal defect detection circuit 55, which is a synchronization signal defect detection means capable of generating the non-recorded portion shown in FIGS. 4 (c) and 10 (c) based on the control signal reproduced by the control signal reproduction means 52. A control signal loss detection circuit 56, which is a control signal loss detection means that can be detected and held as no-recording period information, 56 is a video signal defect detection circuit 53 or a synchronization signal loss. A video signal deleting means that can act on the video memory that is the video signal storage means 34 to operate the stored contents in the video memory corresponding to the period based on each period information that the detection circuit 54 or the control signal defect detection circuit 55 has. It consists of a certain video signal deletion circuit. In this configuration, the above configuration is provided in one housing.

  FIG. 12 is a perspective view showing the configuration of an integrated device of a VTR and a DVD or HDD. In FIG. 12, 41 is a main body, 44 is a video tape which is a tape-like recording medium on which a signal is recorded, and 45 is a signal on which a signal is recorded. The disc is a disk-shaped recording medium, 42 is an insertion slot into which the video tape 44 can be inserted, and 43 is a tray into which the disk 45 can be loaded. In this configuration, the tray is used, but as an insertion slot in the case of the slot-in type Also good. Reference numeral 46 denotes an HDD built in the main body 41. In this configuration, the disk 45 and the HDD 46 may coexist or may be configured to include either one.

  FIG. 11 is a block diagram showing the internal configuration of the video signal storage circuit. 34b is a first memory in which a digital video signal output from the A / D conversion circuit 33 is written, and corresponds to a so-called buffer memory. Reference numeral 34c denotes a second memory to which the digital video signal read from the first memory 34b is written, and reference numeral 34a denotes a memory control circuit that performs writing / reading control of the first and second memories 34b and 34c.

  The operation of the signal reproducing / recording apparatus of the present embodiment configured as described above will be described below.

  First, in FIG. 12, when the signal recorded on the video tape 44 is dubbed to the disk 45 or the HDD 46, the video tape 44 is first inserted into the insertion slot 42, loaded into the main body 41, and put into a reproduction standby state. Next, an eject switch (not shown) or the like is operated to pull out the tray 43, the disk 45 is placed on the tray 43, the tray 43 is again inserted into the main body 41, and a recording standby state is set. Here, the loading method of the video tape 44 and the disk 45 may be reversed or simultaneous. Even if the disk 45 is not inserted, since the HDD is built in the main body 41, it is possible to enter a dubbing standby state. Next, the VTR side playback button and pause button provided on the main body 41 are operated to set the VTR side to playback standby state, and the disk side recording button and pause button are operated to record the disk side. Set to the standby state. In this configuration, the VTR side and the disc side are operated independently to shift to the dubbing standby state. However, by operating one dubbing dedicated button (so-called one-touch dubbing button) once, the VTR It may be a function of putting the disc side and the disc side into a dubbing standby state.

  Next, the dubbing operation in this configuration and the dubbing operation in the state shown in FIG. 4 will be described with reference to FIG.

  When a defective portion on the tape shown in FIG. 4 is reproduced during dubbing, a video signal reproduction circuit 32 detects a dropout portion as a first example, and a video signal defect detection is performed based on the detected dropout portion. Information is secured by the video signal defect detection circuit 53. Further, as a second example, the defect period information is ensured by the synchronization signal defect period detection circuit 54 due to the lack of the horizontal synchronization signal of the defect portion in the control signal reproduction circuit 51. When the non-recorded portion on the tape shown in FIG. 4C is reproduced, the control signal reproducing circuit 52 reproduces the missing portion of the control signal, and this missing period is detected as the non-recording period information. Secured by the circuit 55.

  Then, based on the defect period information and the non-recording period information, the video signal deletion circuit 56 performs the operation from the first memory 34b as shown in FIG. 11 according to the operation method of the video memory 34 shown in FIG. 2 is instructed to transfer the video data to the second memory 34c.

  Here, FIG. 5 schematically shows an internal processing method of the video signal storage circuit 34 shown in FIG. 1, and this processing method is the content temporarily stored in the first memory 34b. By transferring the part other than the part corresponding to the defect period to the first memory 34c on the time axis and transferring it to the second memory 34c, the defect period is deleted as a result.

  FIG. 6 schematically shows an internal processing method of the video signal storage circuit 34 shown in FIG. 1, and this processing method is a non-recording period among the contents temporarily stored in the first memory 34b. As a result, the non-recording period is deleted by filling the portion other than the portion corresponding to the head memory side on the time axis and transferring it to the second memory 34c.

  Then, the contents of the second memory 34c of the video memory 34 are output in a time series, and the output signal is generated and generated as a stream signal for recording on the recording medium 36 by the stream generation circuit 35. The stream signal is digitally recorded on a digital recording medium 36 such as an HDD or a DVD.

  As described above, according to the present embodiment, the video signal deletion circuit is based on the defect detection signal and the non-recording portion detection signal from the video signal defect detection circuit 53, the synchronization signal defect detection circuit 54, and the control signal defect detection circuit 55. 56 controls the video memory 34 to operate so as to delete the video having a defect and the video of the non-recording portion, thereby eliminating the defect and the non-recording portion when dubbing from the tape 31 to the digital recording medium 36. A good video signal can be dubbed.

  The video signal deletion circuit 56 of the present embodiment is based on the video signal defect detection circuit 53, the synchronization signal defect detection circuit 54, and the control signal defect detection circuit 55 based on the defect detection signal and the non-recording portion detection signal. However, when all the defect detection signals from the video signal defect detection circuit 53, the synchronization signal defect detection circuit 54, and the control signal defect detection circuit 55 and the non-recording portion detection signal are aligned, the video is deleted. It is good also as a structure which controls so that deletion may be carried out, and it is good also as a structure which controls so that a video signal may be deleted if any one or two detection signals are input.

  In the present embodiment, the A / D conversion circuit 33 is provided. However, when a digitally recorded tape such as a digital video tape is used for the tape 31, conversion to a digital signal is not necessary. The / D conversion circuit 33 can be omitted. In this case, the output of the video signal reproduction circuit 32 is directly input to the video signal storage circuit 34.

(Embodiment 2)
Next, a second embodiment of the present invention will be described.

  2 is a block diagram showing the overall configuration of the second embodiment, FIG. 11 is a block diagram showing the configuration in the video signal storage means, and FIG. 7 shows the behavior of the memory in the video signal storage means in FIG. FIG. 8 shows a signal comparison with the normal state of the signal detected by the first detection means, and FIG. 9 shows the signal detected by the second detection means.

  In FIG. 2, reference numeral 31 denotes a tape, which is a first recording medium on which at least a video signal is recorded, in which an audio signal and a control signal are recorded in addition to the video signal. In this embodiment, the tape 31 is assumed to be an analog recording video tape, but it may be a digital video tape recorded in the DV format. When the digital video tape is used, the A / D conversion circuit 33 in FIG. 1 is not necessary, and the reproduction video signal (digital) output from the video signal reproduction circuit 32 is directly input to the video signal storage circuit 34. A reproduction signal processing circuit 32 is a reproduction signal processing means for reproducing a video signal recorded on the tape 31 and detects a dropout portion, and 51 is a control signal for reproducing a synchronization signal included in the video signal recorded on 31. A control signal reproduction circuit as reproduction means, 52 a control signal reproduction circuit as means for reproducing the control signal recorded in 31, and 33 an analog-digital conversion means for converting an analog signal from the reproduction signal processing circuit 32 into a digital signal An A / D conversion circuit 34 is a video memory which is a video signal storage means for temporarily storing a digital video signal from the A / D conversion circuit 33, and includes a plurality of memories, a memory control circuit, and the like. . Reference numeral 35 denotes a stream generation circuit which is a stream generation means for generating a video stream from a video signal from the video memory 34. Reference numeral 36 denotes a digital recording medium which is a second recording medium for recording the stream signal from the stream generation circuit 35. Digital recording media such as optical discs (DVD, CD, etc.), hard disks (HDD), magneto-optical discs (MD, MO, etc.), semiconductor memories (memory cards, etc.).

  Reference numeral 53 denotes a video signal defect detection means which can detect a dropout period based on the information of the dropout portion shown in FIGS. 4 and 8 detected by the video signal reproduction circuit 32 and can have it as defect period information. A signal defect detection circuit 54 detects a missing portion of the horizontal synchronization signal due to the defect shown in FIGS. 4A and 9A based on the control signal regenerated by the control signal regenerating circuit 51 to detect a defect period. A synchronization signal defect detection circuit 55, which is a synchronization signal defect detection means that can be held as information, is shown in FIG. 4C and FIG. 10C based on the control signal reproduced by the control signal reproduction circuit 52. Control signal loss detection circuit 57, which is a control signal loss detection means that can detect a non-recording portion and have it as non-recording period information, 57 is a video signal defect detection Based on the period information of the path 53, the synchronization signal defect detection circuit 54, or the control signal defect detection circuit 55, the video memory 34, which is the video signal storage means, is operated to operate the stored contents in the video memory corresponding to the period. It comprises a video signal interpolation circuit which is a possible video signal interpolation means. In this configuration, the above configuration is provided in one housing.

  The operation of the signal reproducing / recording apparatus of the present embodiment configured as described above will be described below.

  First, the dubbing operation in this configuration and the dubbing operation in the 31 tape state as shown in FIG. 4 will be described with reference to FIG.

  When the defective part on the tape shown in FIG. 4 is reproduced at the time of dubbing, the video signal reproducing circuit 32 detects the dropout part as a first example, and the video signal defect detection is performed based on this to detect the defect period information. It is secured by the video signal defect detection circuit 53. Further, as a second example, the defect period information is secured by the synchronization signal defect period detection circuit 54 due to the lack of the horizontal synchronization signal of the defect portion in the control signal reproduction circuit 51.

  Then, based on the defect period information, the video signal interpolation circuit 57 instructs to transfer the video data from the first memory 34b to the second memory 34c in accordance with the operation method of the video memory 34 shown in FIG. The

  Here, FIG. 7 shows an internal processing method of the video signal storage circuit 34 shown in FIG. 2, and this processing method applies to the portion corresponding to the defect period in the contents temporarily stored in the first memory 34b. Is to sequentially transfer the image of the normal portion immediately before the defective portion to the second memory 34c as a substitute, and as a result, the defective portion is interpolated with the immediately preceding image.

  Then, the contents of the second memory 34c of the video memory 34 are output in time series, and the output signal is generated and generated as a stream signal for recording on the recording medium 36 by the stream generation circuit 35. The stream signal is digitally recorded on a digital recording medium 36 such as an HDD or a DVD.

  As described above, according to the present embodiment, the video signal interpolation circuit is based on the defect detection signal and the non-recording portion detection signal from the video signal defect detection circuit 53, the synchronization signal defect detection circuit 54, and the control signal defect detection circuit 55. 57 controls the video memory 34 to operate so as to interpolate a video having a defect or a video of a non-recording portion into another video, so that a deficiency or no recording is recorded when dubbing from the tape 31 to the digital recording medium 36. It is possible to dub a good video signal with the portion omitted.

  The video signal interpolation circuit 57 of the present embodiment is based on the video signal defect detection circuit 53, the synchronization signal defect detection circuit 54, and the control signal defect detection circuit 55 based on the defect detection signal and the non-recording portion detection signal. However, when all the defect detection signals from the video signal defect detection circuit 53, the synchronization signal defect detection circuit 54, and the control signal defect detection circuit 55 and the no-recording portion detection signal are aligned, the video image is detected. The control may be such that the interpolation is performed, or the control may be performed so that the video signal is interpolated if any one or two detection signals are input.

  In the present embodiment, the A / D conversion circuit 33 is provided. However, when a digitally recorded tape such as a digital video tape is used for the tape 31, conversion to a digital signal is not necessary. The / D conversion circuit 33 can be omitted. In this case, the output of the video signal reproduction circuit 32 is directly input to the video signal storage circuit 34.

(Embodiment 3)
Next, a third embodiment of the present invention will be described.

  3 is a block diagram showing the overall configuration of the third embodiment, FIG. 11 is a block diagram showing the configuration within the video signal storage means, and FIGS. 5 and 6 are diagrams within the video signal storage means of FIG. FIG. 8 shows the behavior of the memory. FIG. 8 shows a signal comparison with the normal state of the signal detected by the first detection means, FIG. 9 shows the second detection means, and FIG. 10 shows the third detection means. ing.

  In FIG. 3, reference numeral 31 denotes a tape, which is a first recording medium on which at least a video signal is recorded, in which an audio signal and a control signal are recorded in addition to the video signal. In this embodiment, the tape 31 is assumed to be an analog recording video tape, but it may be a digital video tape recorded in the DV format. When the digital video tape is used, the A / D conversion circuit 33 in FIG. 1 is not necessary, and the reproduction video signal (digital) output from the video signal reproduction circuit 32 is directly input to the video signal storage circuit 34. A reproduction signal processing circuit 32 is a reproduction signal processing means for reproducing a video signal recorded on the tape 31 and detects a dropout portion, and 51 is a control signal for reproducing a synchronization signal included in the video signal recorded on 31. A control signal reproduction circuit as reproduction means, 52 a control signal reproduction circuit as means for reproducing the control signal recorded in 31, and 33 an analog-digital conversion means for converting an analog signal from the reproduction signal processing circuit 32 into a digital signal An A / D conversion circuit 34 is a video memory which is a video signal storage means for temporarily storing a digital video signal from the A / D conversion circuit 33, and includes a plurality of memories, a memory control circuit, and the like. . Reference numeral 35 denotes a stream generation circuit which is a stream generation means for generating a video stream from a video signal from the video memory 34. Reference numeral 36 denotes a digital recording medium which is a second recording medium for recording the stream signal from the stream generation circuit 35. Digital recording media such as optical discs (DVD, CD, etc.), hard disks (HDD), magneto-optical discs (MD, MO, etc.), semiconductor memories (memory cards, etc.).

  Reference numeral 53 denotes a video signal defect detection means which can detect a dropout period based on the information of the dropout portion shown in FIGS. 4 and 8 detected by the video signal reproduction circuit 32 and can have it as defect period information. A signal defect detection circuit 54 detects a missing portion of the horizontal synchronization signal due to the defect shown in FIGS. 4A and 9A based on the control signal regenerated by the control signal regenerating circuit 51 to detect a defect period. A synchronization signal defect detection circuit 55, which is a synchronization signal defect detection means that can be held as information, is shown in FIG. 4C and FIG. 10C based on the control signal reproduced by the control signal reproduction circuit 52. A control signal loss detection circuit 56 is a control signal loss detection means that can detect a non-recording portion and have it as non-recording period information. 55 is a video signal deletion circuit which is a video signal deletion means which can act on the video memory which is 34 video signal storage means based on each period information of 55 to operate the stored contents in the video memory corresponding to that period, 57 Manipulates the contents stored in the video memory corresponding to the period for the video memory 34 as the video signal storage means based on the period information of the video signal defect detection circuit 53, the synchronization signal defect detection circuit 54 or the control signal defect detection circuit 55. The video signal interpolation circuit 58, which is a video signal interpolation means capable of acting on the video signal, is composed of a selection circuit which is a selection means for enabling selection of the video signal deletion circuit 56 and the video signal interpolation circuit 57. The selection circuit 58 allows the user to arbitrarily select “deletion” or “interpolation” as a response when a defect or no recording occurs by using an initial setting function or the like in this apparatus. The method is not limited to this. In this configuration, the above configuration is provided in one housing.

  The operation of the signal reproducing / recording apparatus of the present embodiment configured as described above will be described below.

  The dubbing operation in this configuration and the dubbing operation in the 31 tape state as shown in FIG. 4 will be described with reference to FIG.

  As shown in FIG. 4A during dubbing, when a defective part on the tape is reproduced, as a first example, the video signal reproducing circuit 32 detects the dropout part, and based on this, the video signal defect is detected. And the defect period information is secured by the video signal defect detection circuit 53. Further, as a second example, the defect period information is secured by the synchronization signal defect period detection circuit 54 due to the lack of the horizontal synchronization signal of the defect portion in the control signal reproduction circuit 51. When the non-recorded portion on the tape shown in FIG. 4C is reproduced, the control signal reproducing circuit 52 reproduces the missing portion of the control signal, and this missing period is detected as the non-recording period information. Secured by the circuit 55.

  When the video signal deletion circuit 56 is selected by the selection circuit 58 based on the defect period information and the non-recording period information, the video memory 34 shown in FIG. In accordance with the above operation method, an instruction is given to transfer the video data from the first memory 34b to the second memory 34c.

  Here, FIG. 5 schematically shows an internal processing method of the video signal storage circuit 34 shown in FIG. 3, and this processing method is included in the contents temporarily stored in the first memory 34b. By transferring the part other than the part corresponding to the defect period to the first memory 34c on the time axis and transferring it to the second memory 34c, the defect period is deleted as a result.

  FIG. 6 schematically shows an internal processing method of the video signal storage circuit 34 shown in FIG. 3, and this processing method is a non-recording period among the contents temporarily stored in the first memory 34b. As a result, the non-recording period is deleted by filling the portion other than the portion corresponding to the head memory side on the time axis and transferring it to the second memory 34c.

  When the video signal interpolation circuit 57 is selected by the selection circuit 58, the video signal interpolation circuit 57 moves from the first memory 34b to the second memory 34c according to the operation method of the video memory 34 shown in FIG. An instruction is given to transfer the video data.

  Here, FIG. 7 shows an internal processing method of the video signal storage circuit 34 shown in FIG. 2, and this processing method applies to the portion corresponding to the defect period in the contents temporarily stored in the first memory 34b. Is to sequentially transfer the image of the normal portion immediately before the defective portion to the second memory 34c as a substitute, and as a result, the defective portion is interpolated with the immediately preceding image.

  Then, the contents of the second memory 34c of the video memory 34 are output in time series, and the output signal is generated and generated as a stream signal for recording on the recording medium 36 by the stream generation circuit 35. The stream signal is digitally recorded on a digital recording medium 36 such as an HDD or a DVD.

  As described above, according to the present embodiment, the video signal interpolation circuit is based on the defect detection signal and the non-recording portion detection signal from the video signal defect detection circuit 53, the synchronization signal defect detection circuit 54, and the control signal defect detection circuit 55. 57 controls the video memory 34 to operate so as to interpolate a video having a defect or a video of a non-recording portion into another video, so that a deficiency or no recording is recorded when dubbing from the tape 31 to the digital recording medium 36. It is possible to dub a good video signal with the portion omitted.

  The video signal interpolation circuit 57 of the present embodiment is based on the video signal defect detection circuit 53, the synchronization signal defect detection circuit 54, and the control signal defect detection circuit 55 based on the defect detection signal and the non-recording portion detection signal. However, when all the defect detection signals from the video signal defect detection circuit 53, the synchronization signal defect detection circuit 54, and the control signal defect detection circuit 55 and the no-recording portion detection signal are aligned, the video image is detected. The control may be such that the interpolation is performed, or the control may be performed so that the video signal is interpolated if any one or two detection signals are input.

  In the present embodiment, the A / D conversion circuit 33 is provided. However, when a digitally recorded tape such as a digital video tape is used for the tape 31, conversion to a digital signal is not necessary. The / D conversion circuit 33 can be omitted. In this case, the output of the video signal reproduction circuit 32 is directly input to the video signal storage circuit 34.

  A tape-shaped recording medium represented by video tape and a digital recording medium such as an optical disk or magnetic disk represented by DVD or hard disk are loaded or equipped in a single housing, and signals recorded on the tape-shaped recording medium are displayed. The present invention relates to a signal reproducing / recording apparatus that can be dubbed to a DVD or HDD, but the dubbing source medium and the dubbing destination medium are not limited to these, and are used for dubbing video signals recorded on various media. It is effective.

1 is a block diagram showing the overall configuration of a signal recording / reproducing apparatus according to Embodiment 1 of the present invention. The block diagram which shows the signal recording / reproducing apparatus whole structure in Embodiment 2 of this invention. The block diagram which shows the whole signal recording / reproducing apparatus structure in Embodiment 3 of this invention. The schematic diagram which is an example of the state of the tape which this invention tends to solve, and an example of the actual image | video when these are reproduced | regenerated The schematic diagram which shows the method of deleting the defective part of a video signal with the processing method inside the video signal memory | storage circuit by this invention. The schematic diagram which shows the method of deleting the non-recording part of a video signal with the processing method inside the video signal memory | storage circuit by this invention. The schematic diagram which shows the method of interpolating the defective part of a video signal by the processing method inside the video signal storage circuit by this invention The schematic diagram for demonstrating the detection operation of the 1st detection means by this invention Schematic diagram for explaining the detection operation of the second detection means according to the present invention. Schematic diagram for explaining the detection operation of the third detection means according to the present invention. Block diagram showing internal configuration of video signal storage circuit The perspective view which shows the structure of the integrated machine of VTR and DVD or HDD. The block diagram which shows the whole structure of the conventional signal recording / reproducing apparatus.

Explanation of symbols

31 Tape 32 Video signal reproduction circuit 33 A / D conversion circuit 34 Video memory 35 Digital video stream generation circuit 36 Digital recording medium 51 Control signal reproduction circuit 52 Control signal reproduction circuit 53 Video signal defect detection circuit 54 Synchronization signal defect detection circuit 55 Control Signal defect detection circuit 56 Video signal deletion circuit 57 Video signal interpolation circuit 58 Selection circuit

Claims (9)

At least a first recording medium on which a video signal is recorded, reproduction signal processing means for reproducing the video signal recorded on the first recording medium and detecting a dropout portion and / or a non-recording portion, and the reproduction Video signal storage means for temporarily storing a digital video signal from the signal processing means, stream generation means for generating a video stream from the video signal from the video signal storage means, and recording a stream signal from the stream generation means And a video signal based on a detection result detected by the error detection means, a second recording medium to be reproduced, an error detection means for detecting a dropout portion and / or a non-recording portion reproduced by the reproduction signal processing means, A signal reproduction recording comprising: deletion control means for deleting a part of the digital video signal stored in the storage means Location. A first recording medium on which at least a video signal is recorded; a reproduction signal processing means for reproducing the video signal recorded on the first recording medium and detecting a dropout portion and / or a non-recording portion; and the reproduction Video signal storage means for temporarily storing a digital video signal from the signal processing means, stream generation means for generating a video stream from the video signal from the video signal storage means, and recording a stream signal from the stream generation means And a video signal based on a detection result detected by the error detection means, a second recording medium to be reproduced, an error detection means for detecting a dropout portion and / or a non-recording portion reproduced by the reproduction signal processing means, Interpolation control means for interpolating a part of the digital video signal stored in the storage means with another video is provided. Signal reproducing and recording equipment. At least a first recording medium on which a video signal is recorded, reproduction signal processing means for reproducing the video signal recorded on the first recording medium and detecting a dropout portion and / or a non-recording portion, and the reproduction Video signal storage means for temporarily storing a digital video signal from the signal processing means, stream generation means for generating a video stream from the video signal from the video signal storage means, and recording a stream signal from the stream generation means And a video signal based on a detection result detected by the error detection means, a second recording medium to be reproduced, an error detection means for detecting a dropout portion and / or a non-recording portion reproduced by the reproduction signal processing means, A deletion control means for deleting a part of the digital video signal stored in the storage means; and a detection detected by the error detection means. Interpolation control means for interpolating a part of the digital video signal stored in the video signal storage means with another video based on the result, and selection means capable of switching between the deletion control means and the interpolation control means A signal reproducing / recording apparatus. A first recording medium on which at least a video signal is recorded; reproduction signal processing means for reproducing the video signal recorded on the first recording medium and detecting a dropout portion; and an analog from the reproduction signal processing means An analog / digital conversion means for converting a signal into a digital signal, a video signal storage means for temporarily storing a digital video signal from the analog / digital conversion means, and a video stream generated from the video signal from the video signal storage means Stream generating means, a second recording medium for recording a stream signal from the stream generating means, a control signal reproducing means for reproducing a synchronization signal and a control signal reproduced from the first recording medium, and the reproduction First detection means for detecting successive dropout periods reproduced by the signal processing means; and the control signal Second detection means for detecting a missing period of the synchronization signal reproduced by the live means, third detection means for detecting a non-recording period of the control signal reproduced by the control signal reproduction means, A signal reproduction recording apparatus comprising: a deletion control unit that deletes a part of the digital video signal stored in the video signal storage unit based on a detection result detected by the third detection unit. A first recording medium on which at least a video signal is recorded; reproduction signal processing means for reproducing the video signal recorded on the first recording medium and detecting a dropout portion; and an analog from the reproduction signal processing means An analog / digital conversion means for converting a signal into a digital signal, a video signal storage means for temporarily storing a digital video signal from the analog / digital conversion means, and a video stream generated from the video signal from the video signal storage means Stream generating means, a second recording medium for recording a stream signal from the stream generating means, a control signal reproducing means for reproducing a synchronization signal and a control signal reproduced from the first recording medium, and the reproduction First detection means for detecting successive dropout periods reproduced by the signal processing means; and the control signal Second detection means for detecting a missing period of the synchronization signal reproduced by the live means, third detection means for detecting a non-recording period of the control signal reproduced by the control signal reproduction means, An apparatus for reproducing and recording signals, comprising: interpolation control means for interpolating a part of the digital video signal stored in the video signal storage means based on the detection result detected by the third detection means. A first recording medium on which at least a video signal is recorded; reproduction signal processing means for reproducing the video signal recorded on the first recording medium and detecting a dropout portion; and an analog from the reproduction signal processing means An analog / digital conversion means for converting a signal into a digital signal, a video signal storage means for temporarily storing a digital video signal from the analog / digital conversion means, and a video stream generated from the video signal from the video signal storage means Stream generating means, a second recording medium for recording a stream signal from the stream generating means, a control signal reproducing means for reproducing a synchronization signal and a control signal reproduced from the first recording medium, and the reproduction First detection means for detecting successive dropout periods reproduced by the signal processing means; and the control signal Second detection means for detecting a missing period of the synchronization signal reproduced by the live means, third detection means for detecting a non-recording period of the control signal reproduced by the control signal reproduction means, Interpolation control means for interpolating a part of the digital video signal stored in the video signal storage means based on the detection result detected by the third detection means, and detection detected by the first to third detection means A deletion control means for deleting a part of the digital video signal stored in the video signal storage means based on the result, and the deletion control means and the interpolation control means can select either one of them. Playback recording device. The deletion control means includes: first detection means for detecting continuous dropout periods reproduced by the reproduction signal processing means; second detection means for detecting missing periods of the synchronization signals reproduced by the control signal reproduction means; One or a combination of the above three detection means of the third detection means for detecting the non-recording period of the control signal reproduced by the signal reproduction means, and among the first to third detection means 5. A signal reproducing / recording apparatus according to claim 4, wherein a part of the digital video signal stored in said video signal storage means is deleted based on a detection result detected by one or a combination of two detection means. Interpolation control means includes first detection means for detecting continuous dropout periods reproduced by the reproduction signal processing means, and second detection means for detecting missing periods of synchronization signals reproduced by the control signal reproduction means. , One or a combination of the above three detection means of the third detection means for detecting the non-recording period of the control signal reproduced by the control signal reproduction means, and the first to third detection means 6. The signal reproduction recording according to claim 5, wherein a part of the digital video signal stored in the video signal storage means is interpolated based on a detection result detected by the detection means by one or two combinations. apparatus. First detection means for detecting successive dropout periods reproduced by the reproduction signal processing means, second detection means for detecting a missing period of the synchronization signal reproduced by the control signal reproduction means, and reproduction by the control signal reproduction means One or a combination of the three detection means of the third detection means for detecting the non-recording period of the control signal to be performed, and one or two of the first to third detection means Interpolation control means for interpolating a part of the digital video signal stored in the video signal storage means based on the detection result detected by the detection means by combination; and the detection result detected by the first to third detection means And a deletion control means for deleting a part of the digital video signal stored in the video signal storage means based on either of the deletion control means and the interpolation control means. It one Selectable signal reproducing recording apparatus according to claim 6, wherein.

Images