KR890012096U - 쌍방향 catv 시스템 - Google Patents
쌍방향 catv 시스템Info
- Publication number
- KR890012096U KR890012096U KR2019870020147U KR870020147U KR890012096U KR 890012096 U KR890012096 U KR 890012096U KR 2019870020147 U KR2019870020147 U KR 2019870020147U KR 870020147 U KR870020147 U KR 870020147U KR 890012096 U KR890012096 U KR 890012096U
- Authority
- KR
- South Korea
- Prior art keywords
- catv system
- interactive catv
- interactive
- catv
- Prior art date
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
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Systems (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019870020147U KR910009591Y1 (ko) | 1987-11-20 | 1987-11-20 | 쌍방향 catv 시스템 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019870020147U KR910009591Y1 (ko) | 1987-11-20 | 1987-11-20 | 쌍방향 catv 시스템 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR890012096U true KR890012096U (ko) | 1989-07-15 |
KR910009591Y1 KR910009591Y1 (ko) | 1991-12-13 |
Family
ID=19269622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019870020147U KR910009591Y1 (ko) | 1987-11-20 | 1987-11-20 | 쌍방향 catv 시스템 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR910009591Y1 (ko) |
-
1987
- 1987-11-20 KR KR2019870020147U patent/KR910009591Y1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR910009591Y1 (ko) | 1991-12-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
REGI | Registration of establishment | ||
FPAY | Annual fee payment |
Payment date: 20010912 Year of fee payment: 11 |
|
EXPY | Expiration of term |