MX9605008A - Video signal copy guard apparatus, method thereof, and video signal recording medium. - Google Patents
Video signal copy guard apparatus, method thereof, and video signal recording medium.Info
- Publication number
- MX9605008A MX9605008A MX9605008A MX9605008A MX9605008A MX 9605008 A MX9605008 A MX 9605008A MX 9605008 A MX9605008 A MX 9605008A MX 9605008 A MX9605008 A MX 9605008A MX 9605008 A MX9605008 A MX 9605008A
- Authority
- MX
- Mexico
- Prior art keywords
- video signal
- lines
- signal
- vtr
- copy protection
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 3
- 230000006866 deterioration Effects 0.000 abstract 1
Landscapes
- Television Signal Processing For Recording (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
To remarkably deteriorate the quality of a reproduced image that is dubbed by a VTR without a deterioration of a reproduced image of a TV receiver. Copy protection signals b and c whose phase is different from that of a burst signal a are placed before and after the burst signal a. This process is performed as ablock composed of several lines to several ten lines every several ten lines toseveral hundred lines as in a portiond. Alternatively, a copy protection signal is placed in alllines so as to improve theeffect of the copy guard as in a portione. When lines in which the copy protection signal is not placed are disposed as in a portion f, the image on the TV receuver becomes stable. When a low band conversion of the VTR is performed for the signal, the duties of the signals b and c increase. Thus, the reproduced image is deteriorated. Since the copy protection signal is placed in a part of the signal a, before the low band conversion is performed, the image is normally displayed on the TV receiver. Since the low band conversion of th VTR is used, the effect of the copy guard for the TV receiver can be separated from that for the VTR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MX9605008A MX9605008A (en) | 1996-10-22 | 1996-10-22 | Video signal copy guard apparatus, method thereof, and video signal recording medium. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7-303494 | 1995-10-27 | ||
| MX9605008A MX9605008A (en) | 1996-10-22 | 1996-10-22 | Video signal copy guard apparatus, method thereof, and video signal recording medium. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MXPA96005008A MXPA96005008A (en) | 1998-01-01 |
| MX9605008A true MX9605008A (en) | 1998-01-31 |
Family
ID=39165050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX9605008A MX9605008A (en) | 1996-10-22 | 1996-10-22 | Video signal copy guard apparatus, method thereof, and video signal recording medium. |
Country Status (1)
| Country | Link |
|---|---|
| MX (1) | MX9605008A (en) |
-
1996
- 1996-10-22 MX MX9605008A patent/MX9605008A/en unknown
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