US5548226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast transmission line implemented with receiver, driver, terminator and IC arrangements
Assignee: LG Electronics Inc
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Filing: 1994-06-30
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Granted: 1996-08-20
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Expires: 2014-06-30
Abstract
Abstract A signal transmitting circuit includes one or more circuit blocks having a driving circuit and an intra-block transmission line for transmitting a signal produced by the driving circuit, one or more circuit blocks having a receiving circuit and an intra-block transmission line for transmitting the signal to said receiving circuit, and a main interblock transmission line for propagating a signal between both of the driving and receiving circuit blocks. Inter-block transmission line is terminated at one or two ends by one or two resistors having substantially the same impedance as the interblock transmission line itself. Each of the intra-block transmission line is provided with a resistance element having a resistance equal to or close to a value derived by subtracting a half of an impedance of the inter-block transmission line from an impedance of the intra-block transmission line, to lower signal amplitude and suppress reflections of a signal at branch points along the main interblock transmission line, thereby enabling a high-speed signal transfer.
Inventors
- 👤 Toshitsugu Takekuma
- 👤 Ryoichi Kurihara
- 👤 Akira Yamagiwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:19
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/0264; H04L25/0298; G; G06; G06F; G06F13/00; G06F13/38; G06F13/40; G06F13/4063; G06F13/4068; G06F13/4072; G06F13/4086; H04B; H04B3/00; H04B3/02; H04L25/0278; H04L25/028; H04L25/0292; H05; H05K; H05K1/00; H05K1/02; H05K1/0213; H05K1/0216; H05K1/0237; H05K1/14
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
202 words
A signal transmitting device comprising: a main transmission line terminated by elements each having a resistance substantially equal to an impedance value of said main transmission line itself; a first circuit block connected to said main transmission line, said first circuit block including a driving circuit for driving a signal, and a first intra-block transmission line with a predetermined impedance for transmitting the signal outputted from said driving circuit to said main transmission line, said first circuit block including an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said first intra-block transmission line; and an at least one second circuit block connected to said main transmission line, said at least one second circuit block including a receiving circuit for receiving a signal; a second intra-block transmission line with a predetermined impedance for transmitting a signal inputted from said main transmission line to said receiving circuit, said second circuit block including an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from said predetermined impedance of said second intra-block transmission line.
Claim 2
Dependent Claim
202 words
A signal transmitting device comprising: a main transmission line terminated by elements each having a resistance substantially equal to an impedance value of said main transmission line itself; a first circuit block connected to said main transmission line, said first circuit block including a driving circuit for driving a signal, and a first intra-block transmission line with a predetermined impedance for transmitting the signal outputted from said driving circuit to said main transmission line, said first circuit block including an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said first intra-block transmission line; and an at least one second circuit block connected to said main transmission line, said at least one second circuit block including a receiving circuit for receiving a signal; a second intra-block transmission line with a predetermined impedance for transmitting a signal inputted from said main transmission line to said receiving circuit, said second circuit block including an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from said predetermined impedance of said second intra-block transmission line.
Claim 3
Dependent Claim
27 words
A signal transmitting device as claimed in claim 1, wherein a reference voltage used in said receiving circuit is supplied from the outside of said receiving circuit.
Claim 4
Dependent Claim
52 words
A signal transmitting device as claimed in claim 1, wherein a ratio of an impedance of said intra-block transmission line to an impedance of said main transmission line is defined on a supply voltage supplied to said driving circuit and said receiving circuit and a signal amplitude of said main transmission line.
Claim 5
Dependent Claim
26 words
A signal transmitting device as claimed in claim 1, wherein said elements each have a resistance ranging from 0.5 times to 1.5 times of said value.
Claim 6
Dependent Claim
119 words
A signal transmitting device comprising: a main transmission line being terminated by elements each having a resistance substantially equal to an impedance value of said main transmission line; and first and second circuit blocks connected to said main transmission line, each of said blocks having a driving and receiving circuit for driving and receiving a signal, and an intra-block transmission line having a predetermined impedance for transmitting a signal between said main transmission line and said driving and receiving circuit, each of said circuit blocks also having an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from said predetermined impedance of said intra-block transmission line.
Claim 7
Dependent Claim
119 words
A signal transmitting device comprising: a main transmission line being terminated by elements each having a resistance substantially equal to an impedance value of said main transmission line; and first and second circuit blocks connected to said main transmission line, each of said blocks having a driving and receiving circuit for driving and receiving a signal, and an intra-block transmission line having a predetermined impedance for transmitting a signal between said main transmission line and said driving and receiving circuit, each of said circuit blocks also having an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from said predetermined impedance of said intra-block transmission line.
Claim 8
Dependent Claim
25 words
A signal transmitting device as claimed in claim 5, wherein said element has a resistance ranging from 0.5 times to 1.5 times of said value.
Claim 9
Dependent Claim
101 words
A signal transmitting device comprising: a main transmission line terminated by elements having a resistance substantially equal to an impedance of said main transmission line; and a circuit block connected to said main transmission line, having a driving circuit propagating a signal; and an intra-block transmission line with a predetermined impedance for transmitting the signal output from said driving circuit to said main transmission line, said circuit block including an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said intra-block transmission line.
Claim 10
Dependent Claim
101 words
A signal transmitting device comprising: a main transmission line terminated by elements having a resistance substantially equal to an impedance of said main transmission line; and a circuit block connected to said main transmission line, having a driving circuit propagating a signal; and an intra-block transmission line with a predetermined impedance for transmitting the signal output from said driving circuit to said main transmission line, said circuit block including an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said intra-block transmission line.
Claim 11
Dependent Claim
26 words
A signal transmitting device as claimed in claim 7, wherein said elements each have a resistance ranging from 0.5 times to 1.5 times of said value.
Claim 12
Dependent Claim
92 words
A circuit block being connected to a main transmission line terminated by one or two elements having a resistance substantially equal to an impedance value of said main transmission line, comprising: a driving circuit driving a signal; and an intra-block transmission line having a predetermined impedance for transmitting the signal between said driving circuit and said main transmission line, and an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said intra-block transmission line.
Claim 13
Dependent Claim
92 words
A circuit block being connected to a main transmission line terminated by one or two elements having a resistance substantially equal to an impedance value of said main transmission line, comprising: a driving circuit driving a signal; and an intra-block transmission line having a predetermined impedance for transmitting the signal between said driving circuit and said main transmission line, and an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said intra-block transmission line.
Claim 14
Dependent Claim
26 words
A signal transmitting device as claimed in claim 9, wherein said elements each have a resistance ranging from 0.5 times to 1.5 times of said value.
Claim 15
Dependent Claim
36 words
A circuit block as claimed in claim 9, further comprising a receiving circuit receiving the signal and wherein said intra-block transmitting line is for transmitting a signal between said receiving circuit and said main transmission line.
Claim 16
Dependent Claim
173 words
A signal transmitting device comprising: a main transmission line terminated at one end or both ends thereof; a driving circuit for driving a signal; a first stubline for transmitting the signal outputted from said driving circuit to said main transmission line, said first stubline having a predetermined impedance; a first element inserted between said first stubline and said main transmission line, said first element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said first stubline line; at least one receiving circuit for receiving a signal; a second stubline for transmitting a signal inputted from said main transmission line to said receiving circuit, said second stubline having a predetermined impedance; and a second element inserted between said second stubline and said main transmission line, said second element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said second stubline.
Claim 17
Dependent Claim
173 words
A signal transmitting device comprising: a main transmission line terminated at one end or both ends thereof; a driving circuit for driving a signal; a first stubline for transmitting the signal outputted from said driving circuit to said main transmission line, said first stubline having a predetermined impedance; a first element inserted between said first stubline and said main transmission line, said first element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said first stubline line; at least one receiving circuit for receiving a signal; a second stubline for transmitting a signal inputted from said main transmission line to said receiving circuit, said second stubline having a predetermined impedance; and a second element inserted between said second stubline and said main transmission line, said second element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said second stubline.
Claim 18
Dependent Claim
30 words
A signal transmitting device as claimed in claim 12, wherein each of said first and second elements has a resistance ranging from 0.5 times to 1.5 times of said value.
Claim 19
Dependent Claim
129 words
A signal transmitting device comprising: a main transmission line terminated at one end or both ends thereof; a driving circuit for driving a signal; a first stubline for transmitting the signal outputted from said driving circuit to said main transmission line, said first stubline having a predetermined impedance; at least one receiving circuit for receiving a signal; a second stubline for transmitting a signal inputted from said main transmission line to said receiving circuit, said second stubline having a predetermined impedance; and an element inserted between each of said first and second stublines and said main transmission line, said element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said second stubline.
Claim 20
Dependent Claim
129 words
A signal transmitting device comprising: a main transmission line terminated at one end or both ends thereof; a driving circuit for driving a signal; a first stubline for transmitting the signal outputted from said driving circuit to said main transmission line, said first stubline having a predetermined impedance; at least one receiving circuit for receiving a signal; a second stubline for transmitting a signal inputted from said main transmission line to said receiving circuit, said second stubline having a predetermined impedance; and an element inserted between each of said first and second stublines and said main transmission line, said element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said second stubline.
Claim 21
Dependent Claim
25 words
A signal transmitting device as claimed in claim 14, wherein said element has a resistance ranging from 0.5 times to 1.5 times of said value.
Claim 22
Dependent Claim
91 words
A signal transmitting device comprising: a main transmission line being terminated at both ends thereof; and a driving and receiving circuit for driving and receiving a signal; a stubline for transmitting a signal between said main transmission line and said driving and receiving circuit, said stubline having a predetermined impedance; and an element inserted between said main transmission and said stubline, said element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said stubline.
Claim 23
Dependent Claim
91 words
A signal transmitting device comprising: a main transmission line being terminated at both ends thereof; and a driving and receiving circuit for driving and receiving a signal; a stubline for transmitting a signal between said main transmission line and said driving and receiving circuit, said stubline having a predetermined impedance; and an element inserted between said main transmission and said stubline, said element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said stubline.
Claim 24
Dependent Claim
25 words
A signal transmitting device as claimed in claim 16, wherein said element has a resistance ranging from 0.5 times to 1.5 times of said value.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-08-20 | 2000-02-19 | 2000-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-20 | 2004-02-19 | 2004-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-20 | 2008-02-19 | 2008-08-20 | $7700.00 | Window Closed / Lapsed |