FR2615342B1 - Systeme de teledistribution comprenant au moins une chaine de television a peage - Google Patents
Systeme de teledistribution comprenant au moins une chaine de television a peageInfo
- Publication number
- FR2615342B1 FR2615342B1 FR8707167A FR8707167A FR2615342B1 FR 2615342 B1 FR2615342 B1 FR 2615342B1 FR 8707167 A FR8707167 A FR 8707167A FR 8707167 A FR8707167 A FR 8707167A FR 2615342 B1 FR2615342 B1 FR 2615342B1
- Authority
- FR
- France
- Prior art keywords
- television
- system including
- channel
- television system
- television channel
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
- H04K3/825—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/60—Jamming involving special techniques
- H04K3/68—Jamming involving special techniques using passive jamming, e.g. by shielding or reflection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/86—Jamming or countermeasure characterized by its function related to preventing deceptive jamming or unauthorized interrogation or access, e.g. WLAN access or RFID reading
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/166—Passage/non-passage of the television signal, e.g. jamming, band suppression
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K2203/00—Jamming of communication; Countermeasures
- H04K2203/10—Jamming or countermeasure used for a particular application
- H04K2203/14—Jamming or countermeasure used for a particular application for the transfer of light or images, e.g. for video-surveillance, for television or from a computer screen
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/43—Jamming having variable characteristics characterized by the control of the jamming power, signal-to-noise ratio or geographic coverage area
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Electromagnetism (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Details Of Television Systems (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8707167A FR2615342B1 (fr) | 1987-05-13 | 1987-05-13 | Systeme de teledistribution comprenant au moins une chaine de television a peage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8707167A FR2615342B1 (fr) | 1987-05-13 | 1987-05-13 | Systeme de teledistribution comprenant au moins une chaine de television a peage |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2615342A1 FR2615342A1 (fr) | 1988-11-18 |
FR2615342B1 true FR2615342B1 (fr) | 1991-09-13 |
Family
ID=9351312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8707167A Expired - Fee Related FR2615342B1 (fr) | 1987-05-13 | 1987-05-13 | Systeme de teledistribution comprenant au moins une chaine de television a peage |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2615342B1 (fr) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL182689C (nl) * | 1974-12-24 | 1988-04-18 | Oak Communications Inc | Signaalverdeelinrichting voor een hoogfrequent kabelnetwerk. |
DE2725250C3 (de) * | 1977-06-03 | 1982-03-18 | Siemens AG, 1000 Berlin und 8000 München | Kabelfernsehanlage mit abschaltbaren Teilnehmeranschlüssen |
-
1987
- 1987-05-13 FR FR8707167A patent/FR2615342B1/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2615342A1 (fr) | 1988-11-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse | ||
ST | Notification of lapse |