Patent US4818995A successfully refreshed from Google Patents.
US4818995A
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Parallel transmission system
Assignee: Hitachi Ltd
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Filing: 1987-05-19
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Granted: 1989-04-04
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Expires: 2007-05-19
Abstract
Abstract A parallel pulse transmission system, wherein the sending side converts original signals into line coded signals of a block coding type (mBnB line codes, m/2≧2/3, n≧3) and transmits them after aligning the timings of the blocks receiving side. The regenerates of the systems transmitted line codes and thereafter, aligns the timings of blocks of the line codes.
Inventors
- 👤 Yoshitaka Takahashi
- 👤 Yasushi Takahashi
- 👤 Yukio Nakano
- 👤 Akihiro Hori
- 👤 Minoru Maeda
- 👤 Yoshihiko Miyano
- 👤 Ikuo Tokizawa
- 👤 Masatoyo Sumida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:11
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/0054; H04L7/0066; H04L25/00; H04L25/02; H04L25/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
128 words
A parallel transmission system comprising: a plurality of line coders for converting parallel original signals into parallel mBnB line codes, each code including a series of n-bit blocks, and each block including an m-bit word, where m and n are natural numbers; a block timing clock signal for aligning phases of the blocks of said mBnB line codes; a plurality of parallel transmission lines for transmitting said parallel mBnB line codes from said line codes wherein each transmission line transmits an mBnB line code; a plurality of receiver circuits for receiving said parallel mBnB line codes from said line coders; and delay difference compensation means for aligning the phases of the blocks of the parallel mBnB line codes received by said receiver circuits based on a reference signal.
Claim 2
Dependent Claim
128 words
A parallel transmission system comprising: a plurality of line coders for converting parallel original signals into parallel mBnB line codes, each code including a series of n-bit blocks, and each block including an m-bit word, where m and n are natural numbers; a block timing clock signal for aligning phases of the blocks of said mBnB line codes; a plurality of parallel transmission lines for transmitting said parallel mBnB line codes from said line codes wherein each transmission line transmits an mBnB line code; a plurality of receiver circuits for receiving said parallel mBnB line codes from said line coders; and delay difference compensation means for aligning the phases of the blocks of the parallel mBnB line codes received by said receiver circuits based on a reference signal.
Claim 3
Dependent Claim
81 words
A parallel transmission system comprising: means for converting parallel original signals into parallel mBnB line codes each code including a series of n-bit blocks, each block including an m-bit word and the phases of the blocks of said mBnB line codes being aligned; means connected to said converting means for receiving said parallel mBnB line codes through parallel transmission lines; and means for aligning the phases of the blocks of said received parallel mBnB line codes based on a reference signal.
Claim 4
Dependent Claim
81 words
A parallel transmission system comprising: means for converting parallel original signals into parallel mBnB line codes each code including a series of n-bit blocks, each block including an m-bit word and the phases of the blocks of said mBnB line codes being aligned; means connected to said converting means for receiving said parallel mBnB line codes through parallel transmission lines; and means for aligning the phases of the blocks of said received parallel mBnB line codes based on a reference signal.
Claim 5
Dependent Claim
86 words
A parallel transmission method comprising the steps of: converting parallel original signals into parallel mBnB line codes each code including a series of n-bit blocks, and each block including an m-bit word; aligning the phases of the blocks of said parallel mBnB line codes; transmitting said mBnB line codes with the phases having been aligned with one another; receiving each mBnB line code after the transmitting step; and aligning the phases of the blocks of the received parallel mBnB line codes based on a reference signal.
Claim 6
Dependent Claim
86 words
A parallel transmission method comprising the steps of: converting parallel original signals into parallel mBnB line codes each code including a series of n-bit blocks, and each block including an m-bit word; aligning the phases of the blocks of said parallel mBnB line codes; transmitting said mBnB line codes with the phases having been aligned with one another; receiving each mBnB line code after the transmitting step; and aligning the phases of the blocks of the received parallel mBnB line codes based on a reference signal.
Claim 7
Dependent Claim
19 words
A parallel transmission method according to claim 3, wherein said reference signal is generated at the receiving side independently.
Claim 8
Dependent Claim
33 words
A parallel transmission method according to claim 3, where said reference signal is a clock signal for block synchronization and said reference signal is sent from the sending side via another transmission line.
Claim 9
Dependent Claim
24 words
A parallel transmission method according to claim 3, wherein said reference signal is a clock signal for block synchronization generated at the receiving side.
Claim 10
Dependent Claim
16 words
A parallel transmission system according to claim 1, wherein n is a natural number where 3≦n≦10.
Claim 11
Dependent Claim
16 words
A parallel transmission system according to claim 2, wherein n is a natural number where 3≦n≦10.
Claim 12
Dependent Claim
16 words
A parallel transmission method according to claim 3, wherein n is a natural number where 3≦n≦10.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |