JPH0552095B2 - - Google Patents
Info
- Publication number
- JPH0552095B2 JPH0552095B2 JP58036044A JP3604483A JPH0552095B2 JP H0552095 B2 JPH0552095 B2 JP H0552095B2 JP 58036044 A JP58036044 A JP 58036044A JP 3604483 A JP3604483 A JP 3604483A JP H0552095 B2 JPH0552095 B2 JP H0552095B2
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- filter
- amplifier
- circuit
- upstream
- 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 - Lifetime
Links
- 238000011144 upstream manufacturing Methods 0.000 claims description 24
- 230000002457 bidirectional effect Effects 0.000 claims description 11
- 230000001629 suppression Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/36—Repeater circuits
- H04B3/38—Repeater circuits for signals in two different frequency ranges transmitted in opposite directions over the same transmission path
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58036044A JPS59161937A (ja) | 1983-03-07 | 1983-03-07 | 双方向catvシステムにおける集合雑音抑制方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58036044A JPS59161937A (ja) | 1983-03-07 | 1983-03-07 | 双方向catvシステムにおける集合雑音抑制方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59161937A JPS59161937A (ja) | 1984-09-12 |
JPH0552095B2 true JPH0552095B2 (ko) | 1993-08-04 |
Family
ID=12458706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58036044A Granted JPS59161937A (ja) | 1983-03-07 | 1983-03-07 | 双方向catvシステムにおける集合雑音抑制方法 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59161937A (ko) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63262982A (ja) * | 1987-04-20 | 1988-10-31 | Fujitsu Ltd | 双方向catvシステム |
JPH01236873A (ja) * | 1988-03-17 | 1989-09-21 | Erubetsukusu Video Kk | 閉回路テレビジョン装置 |
JPH06276521A (ja) * | 1990-12-26 | 1994-09-30 | Nec Corp | 上り流合雑音抑圧方式 |
CA2079284A1 (en) * | 1991-12-23 | 1993-06-24 | Lowell G. Atkinson | Feeder switch for a bidirectional cable television system |
US5557319A (en) * | 1994-12-28 | 1996-09-17 | U.S. Philips Corporation | Subscriber return system for CATV full service networks |
US6094211A (en) * | 1996-08-15 | 2000-07-25 | Com21, Inc. | TV and data cable system ingress noise blocker |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS513549A (ja) * | 1974-06-26 | 1976-01-13 | Hitachi Ltd | Zatsuonboshisochi |
-
1983
- 1983-03-07 JP JP58036044A patent/JPS59161937A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS513549A (ja) * | 1974-06-26 | 1976-01-13 | Hitachi Ltd | Zatsuonboshisochi |
Also Published As
Publication number | Publication date |
---|---|
JPS59161937A (ja) | 1984-09-12 |
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