AU8120782A - Video scrambling and descramabling means using frequency dependent delay means - Google Patents
Video scrambling and descramabling means using frequency dependent delay meansInfo
- Publication number
- AU8120782A AU8120782A AU81207/82A AU8120782A AU8120782A AU 8120782 A AU8120782 A AU 8120782A AU 81207/82 A AU81207/82 A AU 81207/82A AU 8120782 A AU8120782 A AU 8120782A AU 8120782 A AU8120782 A AU 8120782A
- Authority
- AU
- Australia
- Prior art keywords
- descramabling
- frequency dependent
- dependent delay
- video scrambling
- delay means
- 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.)
- Abandoned
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/169—Systems operating in the time domain of the television signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H15/00—Transversal filters
- H03H15/02—Transversal filters using analogue shift registers
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Picture Signal Circuits (AREA)
- Noise Elimination (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US24347781A | 1981-03-13 | 1981-03-13 | |
| US243477 | 1981-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU8120782A true AU8120782A (en) | 1982-09-16 |
Family
ID=22918909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU81207/82A Abandoned AU8120782A (en) | 1981-03-13 | 1982-03-09 | Video scrambling and descramabling means using frequency dependent delay means |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS57168588A (en) |
| AU (1) | AU8120782A (en) |
| BR (1) | BR8201348A (en) |
| DE (1) | DE3209301A1 (en) |
| FR (1) | FR2501948A1 (en) |
| GB (1) | GB2095071A (en) |
| GR (1) | GR76055B (en) |
| IL (1) | IL65111A0 (en) |
| NL (1) | NL8201037A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2186768B (en) * | 1985-04-19 | 1989-07-05 | Emc Datacare Ltd | Video display unit with improved security |
-
1982
- 1982-02-25 IL IL65111A patent/IL65111A0/en unknown
- 1982-03-02 GB GB8206002A patent/GB2095071A/en not_active Withdrawn
- 1982-03-05 GR GR67500A patent/GR76055B/el unknown
- 1982-03-09 AU AU81207/82A patent/AU8120782A/en not_active Abandoned
- 1982-03-12 NL NL8201037A patent/NL8201037A/en not_active Application Discontinuation
- 1982-03-12 FR FR8204179A patent/FR2501948A1/en not_active Withdrawn
- 1982-03-12 BR BR8201348A patent/BR8201348A/en unknown
- 1982-03-12 JP JP57039261A patent/JPS57168588A/en active Pending
- 1982-03-15 DE DE19823209301 patent/DE3209301A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| BR8201348A (en) | 1983-01-25 |
| IL65111A0 (en) | 1982-04-30 |
| NL8201037A (en) | 1982-10-01 |
| GR76055B (en) | 1984-08-03 |
| JPS57168588A (en) | 1982-10-16 |
| DE3209301A1 (en) | 1982-10-21 |
| GB2095071A (en) | 1982-09-22 |
| FR2501948A1 (en) | 1982-09-17 |
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