KR940004487U - 다찬넬 지하 무선방송 중계기 - Google Patents
다찬넬 지하 무선방송 중계기Info
- Publication number
- KR940004487U KR940004487U KR2019920013749U KR920013749U KR940004487U KR 940004487 U KR940004487 U KR 940004487U KR 2019920013749 U KR2019920013749 U KR 2019920013749U KR 920013749 U KR920013749 U KR 920013749U KR 940004487 U KR940004487 U KR 940004487U
- Authority
- KR
- South Korea
- Prior art keywords
- dachannel
- radio broadcasting
- underground radio
- broadcasting repeater
- repeater
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2603—Arrangements for wireless physical layer control
- H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR92013749U KR950005701Y1 (ko) | 1992-07-25 | 1992-07-25 | 다찬넬 지하 무선방송 중계기 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR92013749U KR950005701Y1 (ko) | 1992-07-25 | 1992-07-25 | 다찬넬 지하 무선방송 중계기 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR940004487U true KR940004487U (ko) | 1994-02-24 |
KR950005701Y1 KR950005701Y1 (ko) | 1995-07-20 |
Family
ID=19337297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR92013749U KR950005701Y1 (ko) | 1992-07-25 | 1992-07-25 | 다찬넬 지하 무선방송 중계기 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR950005701Y1 (ko) |
-
1992
- 1992-07-25 KR KR92013749U patent/KR950005701Y1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR950005701Y1 (ko) | 1995-07-20 |
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Legal Events
Date | Code | Title | Description |
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A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
AMND | Amendment | ||
E601 | Decision to refuse application | ||
J2X1 | Appeal (before the patent court) |
Free format text: APPEAL AGAINST DECISION TO DECLINE REFUSAL |
|
AMND | Amendment | ||
B701 | Decision to grant | ||
REGI | Registration of establishment | ||
J204 | Request for invalidation trial [patent] | ||
J2X1 | Appeal (before the patent court) |
Free format text: INVALIDATION IN ENTIRETY |
|
J2X2 | Appeal (before the supreme court) |
Free format text: APPEAL BEFORE THE SUPREME COURT FOR INVALIDATION IN ENTIRETY REQUESTED 20001019 Effective date: 20001020 |
|
J302 | Written judgement (patent court) |
Free format text: JUDGMENT (PATENT COURT) FOR INVALIDATION IN ENTIRETY REQUESTED 19971010 Effective date: 19980917 |
|
J206 | Request for trial to confirm the scope of a patent right | ||
J301 | Trial decision |
Free format text: TRIAL DECISION FOR CONFIRMATION OF THE SCOPE OF RIGHT_AFFIRMATIVE REQUESTED 20040429 Effective date: 20050728 |
|
J2X1 | Appeal (before the patent court) |
Free format text: CONFIRMATION OF THE SCOPE OF RIGHT_AFFIRMATIVE |
|
J302 | Written judgement (patent court) |
Free format text: JUDGMENT (PATENT COURT) FOR CONFIRMATION OF THE SCOPE OF RIGHT_AFFIRMATIVE REQUESTED 20050905 Effective date: 20060719 |
|
FPAY | Annual fee payment |
Payment date: 20070418 Year of fee payment: 13 |
|
EXPY | Expiration of term |