GB2328314A - Method and apparatus for audio dubbing control - Google Patents
Method and apparatus for audio dubbing control Download PDFInfo
- Publication number
- GB2328314A GB2328314A GB9812511A GB9812511A GB2328314A GB 2328314 A GB2328314 A GB 2328314A GB 9812511 A GB9812511 A GB 9812511A GB 9812511 A GB9812511 A GB 9812511A GB 2328314 A GB2328314 A GB 2328314A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- dubbing
- noise
- level signal
- compact disk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/022—Electronic editing of analogue information signals, e.g. audio or video signals
- G11B27/028—Electronic editing of analogue information signals, e.g. audio or video signals with computer assistance
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
- G11B27/032—Electronic editing of digitised analogue information signals, e.g. audio or video signals on tapes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/28—Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2545—CDs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
A dubbing apparatus for use in dubbing an audio signal contained in a compact disk over a video signal contained in a magnetic tape, comprises: a signal processor for demodulating the audio signal generated from the compact disk, error-correcting the demodulated audio signal, transmitting the error-corrected audio signal to a low pass filter and generating a noise indicator; a rectifier for producing a rectified signal by cutting off components below a zero level from the filtered signal received from the low pass filter; an integrator for producing a constant level signal by electrically integrating the rectified signal; and a controller for comparing the constant level signal with a reference level signal and controlling a motor driving the magnetic tape in response to the noise indicator and the constant level signal. The inventive dubbing apparatus, therefore, enables the dubbing system to perform a noble dubbing free from the noise originated from the compact disk.
Description
METHOD AND APPARATUS FOR AUDIO DUBBING CONTROL
The present invention relates to an audio dubbing; and, more particularly, to a method and apparatus for dubbing an audio signal onto a recording medium.
A user may wish to edit or provide the video taken, e.g., at a wedding ceremony, a party or a picnic with a music or other audio effects. A combination of video cassette recorder(VCR) and compact disk player(CDP) is one of such products capable of providing a dubbing function. For example, the CDP reproduces audio data contained on a compact disk(CD) to be dubbed and the VCR records the audio data on a magnetic tape on which the video has already been recorded.
Fig. 1 shows a block diagram of a conventional dubbing system implemented with the VCR and CDP combined.
The conventional dubbing system comprises: a CD unit 10 for reproducing the audio recorded on the CD; a VCR unit 30 for reproducing or recording audio and video signals on the magnetic tape; an output unit 40 for selectively outputting video and audio signals received from various sources; an input panel 50 via which the user can input a variety of instructions to the dubbing system; and a control unit 60 for controlling the operation of the dubbing system in response to the instructions from the input panel 50 and signals received from other parts of the dubbing system.
The CD unit 10 includes: a pick-up device 11 for optically picking up audio data and video data from the compact disk installed therein and converting the optical audio data and the optical video data into electrical signals, respectively; an amplifier 12 for amplifying the electrical audio signal and the electrical video signal received from the pick-up device 11; a digital signal processor (DSP) 13 for demodulating the amplified audio signal and the amplified video signal, for correcting errors in the amplified audio signal and the amplified video signal and for separately sending the error-corrected audio signal and the error-corrected video signal; a digital to analog (D/A) converter 14 for converting the error-corrected audio signal sent from the DSP 13 into an analog audio signal; a left low pass filter (L-LPF) 15 and a right low pass filter (R-LPF) 16, the former corresponding to a left sound track, the latter corresponding to a right sound track, each for passing only low frequency component in the analog audio signal; a decoder 17 for decoding the errorcorrected video signal transmitted from the DSP 13; a memory 18 for storing the decoded video signal; a digital to analog (D/A) converter 19 for converting the decoded video signal transmitted from the decoder into an analog video signal; and an encoder 20 for encoding the analog video signal sent from the D/A converter 19.
The VCR unit 30 includes: a video-in selector 35 for selecting one between video signals provided from the CD unit 10 and an external source, e.g., TV set (not shown) as its source for recording; an audio-in selector 36 for selecting one between audio signals provided from the CD unit 10 and an external source, e.g., TV set (not shown) as its source for recording; a video recorder 31 for storing a video signal from any one of the CD and the external source on a magnetic tape; a video player 32 for reproducing the video signal from the magnetic tape; an audio recorder 33 for storing an audio signal from one of the CD and the external source on a magnetic tape; an audio player 34 for reproducing the audio signal from the magnetic tape.
The output unit 40 includes an audio-out selector 41 and a video-out selector 42. The audio-out selector 41 includes two outlets, one for left side and the other for right side, of a dual sound system. Each outlet selects one among the audio signals transmitted from the CD unit 10, the VCR unit 30 and the external source (not shown) under the control of the control unit 60. The video-out selector 42 also selects one between the video signal from the CD unit 10 and the video signal from the VCR unit 30 under the control of the control unit 60.
The operation of the dubbing system will now be described.
First, the user selects a dubbing mode at the input panel 50 in order to issue dubbing instructions.
In response to the dubbing instructions from the user, the CD unit 10 is set to a reproduction mode; while the VCR unit 30 is set to the reproduction mode for the video signal contained on the tape and is concurrently set to a record mode for the audio signal transmitted from the CD unit 10.
While the CD unit 10 is in the reproduction mode, the audio data picked up from the pick-up device 11 is amplified at the amplifier 12. The DSP 13 demodulates the amplified audio signal, corrects errors in the amplified audio signal and sends the error-corrected audio signal to the D/A converter 14. The error-corrected digital audio signal is converted into an analog signal at the D/A converter 14. The analog-converted audio signal is low-pass filtered at the left
LPF 15 and the right LPF 16, concurrently, and, then, the filtered signals are transmitted to the audio-in selector 36 and to the audio-out selector 41, respectively.
The filtered signal applied to the audio-in selector 36 is transmitted to the audio recorder 33 in response to the selection control signal in order to be recorded in an audio area designated within the magnetic tape. At the same time, the audio signal applied to the audio-out selector 41 is transmitted to a speaker (not shown) in response to a selection control signal sent from the controller 60 so that the user can listen to.
Meanwhile, a video signal reproduced at the video player 32 is applied to the video-out selector 42 and is fed to a display device, e.g., a TV set, in response to the selection control signal from the control unit 60 so that the user can watch the contents of the video currently being dubbed.
While the aforementioned dubbing function is being carried out, a noise may occur from the compact disk installed in the pick-up device 11. The noise can be caused by a scratch on the surface of the compact disk, an incomplete pick-up from the CD 11, a track-jump or the like.
The conventional dubbing system described above, however, is not equipped with a countermeasure to remove, or even mitigate, the noise.
It is an aim of certain embodiments of the present
invention to at least partly overcome the problems of the
prior art. Accordingly an embodiment of the present
invention provides a dubbing system capable of preventing
a noise originated from the CD which produces an audio
signal for recording on a magnetic tape during a dubbing
operation.
In accordance with one aspect of the present
invention, there is provided a method, for use in a
combined product of a reproducing device and a recording
device, for controlling, in response to a noise generated
at the reproducing device, a dubbing performed by recording
an audio signal reproduced at the reproducing device onto
a recording medium in the recording device, the method
comprising the steps of:
(a) rectifying the audio signal to produce a constant
level signal;
(b) comparing the constant level signal with a
reference level signal; and
(c) controlling the dubbing in response to the
comparison result of step (b).
In accordance with a second aspect of the present invention there is provided a dubbing apparatus for use in dubbing an audio signal contained in a compact disk over a video signal contained in a magnetic tape, the apparatus comprising:
a signal processor for demodulating the audio signal generated from the compact disk, error-correcting the demodulated audio signal, transmitting the error-corrected audio signal to a low pass filter and generating a noise indicator, wherein the noise indicator is an electrical signal that displays a high when a noise is generated from the compact disk and displays a low when no noise is generated from the compact disk;
a rectifier for producing a rectified signal by cutting off components below a zero level from the filtered signal required from the low pass filter;
an integrator for producing a constant level signal by electrically integrating the rectified signal; and
a controller for comparing the constant level signal with a reference level signal and controlling a motor driving the magnetic tape in response to the noise indicator and the constant level signal.
A further aspect of the present invention provides a combination of video cassette recorder and compact disk player incorporating a dubbing apparatus, said dubbing apparatus comprising:
a signal processor for demodulating the audio signal generated from the compact disk, error-correcting the demodulated audio signal, transmitting the error-corrected audio signal to a low pass filter and generating a noise indicator, wherein the noise indicator is an electrical signal that displays a high when a noise is generated from the compact disk and displays a low when no noise is generated from the compact disk;
a rectifier for producing a rectified signal by cutting off components below a zero level from the filtered signal received from the low pass filter;
an integrator for producing a constant level signal by electrically integrating the rectified signal; and
a controller for comparing the constant level signal with a reference level signal and controlling a motor driving the magnetic tape in response to the noise indicator and the constant level signal.
The above and other objects and features of the present invention will become apparent from the following description of preferred embodiments given with reference to the accompanying drawings, in which:
Fig. 1 shows a block diagram of a conventional dubbing system;
Fig. 2 presents a block diagram of the inventive dubbing system; and
Fig. 3 describes the audio dubbing control method in accordance with the present invention.
A preferred embodiment in accordance with the present invention will now be described in detail with reference to
Figs. 2 and 3.
A dubbing system in accordance with the present invention is characterized in that it comprises a rectifier 80 and an integrator 70 in addition to the conventional components.
Further, a controller 60 is functionally modified from its conventional counterpart. The structure and operation of the inventive dubbing system will be described with an emphasis focused on these differences.
The rectifier 80 cuts off those components below the zero level from the audio signals received from the left LPF 15 and the right LPF 16.
The integrator 70 electrically integrates the rectified signal which has been rectified at the rectifier 80 to produce a constant level signal.
The control unit 60 controls a motor that drives the magnetic tape in response to the constant level signal produced at the integrator 70 and a noise indicator received from the DSP 13.
The operation of the inventive dubbing system will now be described in detail.
A radio frequency (RF) signal generated at the pick-up device 11 of the CD unit 10 is amplified at the amplifier 12, and, then, provided to the DSP 13 wherein demodulation and error-correction are performed on the amplified signal.
After being manipulated at the DSP 13, a processed signal is applied to the decoder 17 and the noise indicator generated at the DSP 13 is provided to the control unit 60. The noise indicator provided to the control unit 60 displays a low in a normal state when no noise is generated from the pick-up device 11; while, displays a "high" in an abnormal state when the noise is detected at the DSP 13., wherein the noise may have been caused due to a scratch on the surface of the compact disk, an incomplete pick-up at the pick-up device 11, a track-jump or the like.
The audio signal bearing the noise procreated due to any of the aforementioned causes contains an unpleasant high-level pitch clearly distinguishable from a noise occurring from the magnetic tape of the VCR unit 30. The audio signal bearing the high-level pitch is sent to the rectifier 80.
The audio signal sent to the rectifier 80 is filtered to contain only a positive component. The positive component of the audio signal is fed to the integrator 70. The integrator 70 produces a constant level signal by rectifying the positive component of the audio signal, and, then, feed it to the control unit 60.
The control unit 60 retains its own reference level signal for use in determining whether the DC signal received from the integrator 70 is normal or not. If the constant level signal received from the integrator 70 presents a value above the reference level signal, the control unit 60 detects the abnormality of the audio signal. Accordingly, the control unit 60 stops driving the motor and halts the recording of the audio signal on the magnetic tape.
The control unit 60 continuously monitors the constant level signal received from the integrator 70 and the noise indicator received from the DSP 13. The control unit 60 utilizes the monitored constant level signal and the noise indicator in determining whether an abnormal pick-up occurs while performing the pick-up from the CD 11. If the control unit 60 detects a "low" noise indicator and determines the received constant level signal is equal to or lower than the reference level signal even in the midst of the abnormal state, the control unit 60 resumes the driving of the motor, to thereby resume the dubbing.
In Fig. 3, there is described an audio dubbing control method in accordance with the present invention.
At step 101, instructions requesting an audio dubbing are inputted by a user via the input panel 50.
Accordingly, at step 102, the control unit 60 sets the dubbing mode in response to the instructions of the audio dubbing, which sets up the CD unit 10 for the playback mode and the VCR unit 30 for the record mode.
The dubbing operation is performed at step 103.
At step 104, the value of the constant level signal is compared with the reference level signal. If the constant level signal is determined to be higher than the reference level signal at step 104, the dubbing operation is halted at step 106.
If the constant level signal is determined not to be higher than the reference level signal at step 104, it is checked whether the noise indicator generated from the DSP 13 is "high" at step 105. Unless the noise indicator is 'high", the procedure goes to step 107 wherein the dubbing operation is performed. If the noise indicator is determined to be high", the dubbing operation is halted at step 106, i.e., the motor (not shown) driving the magnetic tape is made to stop at step 106. Then, the procedure goes back to step 104 to check if the constant level signal is higher than the reference level signal.
If the constant level signal is determined not to be higher at step 104 and if the noise indicator shows "low" while the motor is being halted, the dubbing operation automatically resumes.
The method and the apparatus as described above in accordance with the present invention, therefore, enable the dubbing system to perform the dubbing free from the noise originated from the compact disk.
While the present invention has been described with respect to the preferred embodiments, other modifications and variations may be made without departing from the scope of the present invention as set forth in the following claims.
Claims (23)
1. A method, for use in a combined product of a reproducing device and a recording device, for controlling, in response to a noise generated at the reproducing device, a dubbing performed by recording an audio signal reproduced at the reproducing device onto a recording medium in the recording device, the method comprising the steps of:
(a) rectifying the audio signal to produce a constant level signal;
(b) comparing the constant level signal with a reference level signal; and
(c) controlling the dubbing in response to the comparison result of step (b).
2. The method of claim 1, wherein the step (a) includes the steps of:
(al) cutting off components below a zero level from the audio signal; and
(a2) electrically integrating the remainder excluding the components cut off at step (al) to produce the constant level signal.
3. The method of claim 1, wherein step (c) includes the steps of:
(cll) halting the dubbing if the constant level signal is determined to be higher than the reference level signal; and (c12) performing the dubbing if the constant level signal is determined to be not higher than the reference level signal.
4. The method of claim 1, further comprising, between step (b) and step (c), the step of (bb) checking a noise indicator provided from the reproducing device, wherein the noise indicator is an electrical signal that displays a high when the noise is generated at the reproducing device and displays a low when no noise is generated at the reproducing device.
5. The method of claim 4, wherein step (c) includes the steps of:
(c21) halting the dubbing if the noise indicator indicates a high or the constant level signal is determined to be higher than the reference level signal; and
(c22) performing the dubbing if the noise indicator shows a low and the constant level signal is determined to be not higher than the reference level signal.
6. The method of claim 1, wherein the reproducing device is a compact disk player.
7. The method of claim 1, wherein the recording device is a video cassette recorder.
8. The method of claim 1, wherein the noise is caused by a scratch on the surface of a compact disk, an incomplete pickup from the compact disk or a track-jump.
9. The method of claim 4, wherein the reproducing device is a compact disk player.
10. The method of claim 4, wherein the recording device is a video cassette recorder.
11. The method of claim 4, wherein the noise is caused by a scratch on the surface of a compact disk, an incomplete pickup from the compact disk or a track-jump.
12. A dubbing apparatus for use in dubbing an audio signal contained in a compact disk over a video signal contained in a magnetic tape, the apparatus comprising:
a signal processor for demodulating the audio signal generated from the compact disk, error-correcting the demodulated audio signal, transmitting the error-corrected audio signal to a low pass filter and generating a noise indicator, wherein the noise indicator is an electrical signal that displays a high when a noise is generated from the compact disk and displays a low when no noise is generated from the compact disk;
a rectifier for producing a rectified signal by cutting off components below a zero level from the filtered signal received from the low pass filter;
an integrator for producing a constant level signal by electrically integrating the rectified signal; and
a controller for comparing the constant level signal with a reference level signal and controlling a motor driving the magnetic tape in response to the noise indicator and the constant level signal.
13. The dubbing apparatus of claim 12, wherein the controller determines that the noise is generated while the noise indicator displays a high; while determines that the noise is not generated while the noise indicator shows a low.
14. The dubbing apparatus of claim 13, wherein the controller makes the dubbing apparatus halt the dubbing if the noise indicator indicates a high; while, perform the dubbing if the noise indicator displays a low.
15. The dubbing apparatus of claim 14, wherein the controller makes the dubbing apparatus halt the dubbing if the constant level signal is determined to be higher than the reference level signal; while, perform the dubbing if the constant level signal is determined to be not higher than the reference level signal.
16. The dubbing apparatus of claim 12, wherein the noise is caused by a scratch on the surface of a compact disk, an incomplete pick-up from the compact disk or a track-jump.
17. A combination of video cassette recorder and compact disk player incorporating a dubbing apparatus, said dubbing apparatus comprising:
a signal processor for demodulating the audio signal generated from the compact disk, error-correcting the demodulated audio signal, transmitting the error-corrected audio signal to a low pass filter and generating a noise indicator, wherein the noise indicator is an electrical signal that displays a high when a noise is generated from the compact disk and displays a low when no noise is generated from the compact disk;
a rectifier for producing a rectified signal by cutting off components below a zero level from the filtered signal received from the low pass filter;
an integrator for producing a constant level signal by electrically integrating the rectified signal; and
a controller for comparing the constant level signal with a reference level signal and controlling a motor driving the magnetic tape in response to the noise indicator and the constant level signal.
18. The combination of video cassette recorder and compact disk player of claim 17, wherein the controller determines that the noise is generated while the noise indicator displays a high; while determines that the noise is not generated while the noise indicator shows a low.
19. The combination of video cassette recorder and compact disk player of claim 18, wherein the controller makes the dubbing apparatus halt the dubbing if the noise indicator indicates a high; while, perform the dubbing if the noise indicator displays a low.
20. The combination of video cassette recorder and compact disk player of claim 19, wherein the controller makes the dubbing apparatus halt the dubbing if the constant level signal is determined to be higher than the reference level signal; while, perform the dubbing if the constant level signal is determined to be not higher than the reference level signal.
21. The combination of video cassette recorder and compact disk player of claim 17, wherein the noise is caused by a scratch on the surface of a compact disk, an incomplete pickup from the compact disk or a track-jump.
22. An apparatus substantially as hereinbefore described with reference to or as shown in figures 2 and 3 of accompanying drawings.
23. A method substantially as herein described, with reference to or as shown in Figures 2 and 3 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970038320A KR100262973B1 (en) | 1997-08-12 | 1997-08-12 | Method and apparatus for dubbing audio data |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9812511D0 GB9812511D0 (en) | 1998-08-05 |
| GB2328314A true GB2328314A (en) | 1999-02-17 |
Family
ID=19517269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9812511A Withdrawn GB2328314A (en) | 1997-08-12 | 1998-06-10 | Method and apparatus for audio dubbing control |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH1166697A (en) |
| KR (1) | KR100262973B1 (en) |
| GB (1) | GB2328314A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100395563B1 (en) * | 2001-05-18 | 2003-08-21 | 삼성전자주식회사 | combination system for audio dubbing and audio dubbing method using thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0645928A1 (en) * | 1993-09-29 | 1995-03-29 | Kabushiki Kaisha Toshiba | Information-signal recording-or/and reproducing-apparatus |
| EP0795854A2 (en) * | 1996-02-09 | 1997-09-17 | Sony Corporation | Dubbing apparatus |
-
1997
- 1997-08-12 KR KR1019970038320A patent/KR100262973B1/en not_active IP Right Cessation
-
1998
- 1998-06-10 GB GB9812511A patent/GB2328314A/en not_active Withdrawn
- 1998-06-10 JP JP10161249A patent/JPH1166697A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0645928A1 (en) * | 1993-09-29 | 1995-03-29 | Kabushiki Kaisha Toshiba | Information-signal recording-or/and reproducing-apparatus |
| EP0795854A2 (en) * | 1996-02-09 | 1997-09-17 | Sony Corporation | Dubbing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| KR19990015935A (en) | 1999-03-05 |
| JPH1166697A (en) | 1999-03-09 |
| GB9812511D0 (en) | 1998-08-05 |
| KR100262973B1 (en) | 2000-08-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |