JPS54118809A - Signal equalizing system - Google Patents
Signal equalizing systemInfo
- Publication number
- JPS54118809A JPS54118809A JP2575078A JP2575078A JPS54118809A JP S54118809 A JPS54118809 A JP S54118809A JP 2575078 A JP2575078 A JP 2575078A JP 2575078 A JP2575078 A JP 2575078A JP S54118809 A JPS54118809 A JP S54118809A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- information
- test pattern
- period
- signals
- 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.)
- Pending
Links
Abstract
PURPOSE: To improve reproduction information quality by adjusting the tap gain of an equalizer only in the test pattern signal period inserted in the false television signal by the multileveled compressed information signal of detection codes.
CONSTITUTION: Information such as voice, etc. is written as multiplexed time- division signals in a memory 4 and when the read-out speed of the memory 4 is controlled, the information signals are compressed. If error detection codes such as CRC or the like are added to this redundancy part by a redundancy addition circuit 5 and are made to the multi-scale signals by a binary-multiscale conversion circuit 6, the recording density decreased substantially. A synthesizing circuit 8 adds the horizontal synchronizing signal from a synchronizing signal generating circuit 9 and the binary test pattern signal from an equalizing pattern generator 10 to the information signal to generate the false TV signal including the information signal in each horizontal synchronizing signal and including the test pattern at the horizontal period of the specified number. If this signal is recorded and reproduced and the tap gain of the transversal filter is adjusted only in the test pattern period, the high quality information signal is reproduced through the accurate error detection and waveform equalizing.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2575078A JPS54118809A (en) | 1978-03-07 | 1978-03-07 | Signal equalizing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2575078A JPS54118809A (en) | 1978-03-07 | 1978-03-07 | Signal equalizing system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54118809A true JPS54118809A (en) | 1979-09-14 |
Family
ID=12174498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2575078A Pending JPS54118809A (en) | 1978-03-07 | 1978-03-07 | Signal equalizing system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54118809A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5894221A (en) * | 1981-11-30 | 1983-06-04 | Sony Corp | Separating filter |
JPH02108317A (en) * | 1988-10-18 | 1990-04-20 | Matsushita Electric Ind Co Ltd | Automatic equalizing circuit |
JP2010288314A (en) * | 2007-10-17 | 2010-12-24 | Avago Technologies Fiber Ip (Singapore) Pte Ltd | Adaptive equalizer |
-
1978
- 1978-03-07 JP JP2575078A patent/JPS54118809A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5894221A (en) * | 1981-11-30 | 1983-06-04 | Sony Corp | Separating filter |
JPH029755B2 (en) * | 1981-11-30 | 1990-03-05 | Sony Corp | |
JPH02108317A (en) * | 1988-10-18 | 1990-04-20 | Matsushita Electric Ind Co Ltd | Automatic equalizing circuit |
JP2010288314A (en) * | 2007-10-17 | 2010-12-24 | Avago Technologies Fiber Ip (Singapore) Pte Ltd | Adaptive equalizer |
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