US3760167A
Expired / Lapsed
US
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Phase jitter special purpose computer
Assignee: Bull HN Information Systems Italia SpA
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Filing: 1972-03-16
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Granted: 1973-09-18
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Expires: 1992-03-16
Abstract
Abstract A special purpose computer for correcting phase jitter of a communication channel. The computer performs a predetermined algorithm for estimating the phase jitter of the communication system and delaying the data signals so that their delay is equal to the carrier phase estimation delay at the point where the final carrier phase correction is applied.
Inventors
- 👤 R Schirmshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:43
CPC Classifications
H; H04; H04L; H04L27/00
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
186 words
A special purpose computer for performing a predetermined alogirthm and calculating a proper phase for demodulation of a communication carrier comprising: a. working storage means for storing signals representative of in-phase and quadrature data words I and Q respectively, inphase and quadrature carrier words X and Y respectively, and computed words G and R respectively; b. programming-unit means coupled to said working storage means, said programming-unit means responsive to timing signals for providing a predetermined sequence of electronic signals for directing the execution of a predetermined algorithm; c. calculating means coupled to said working storage register means and to said programming-unit means, said calculating means responsive to said programming-unit means for calculating the digital values X and Y representative of the in-phase and quadrature carrier output signals respectively; and d. delay means coupled to said working storage means for delaying the digital signals I and Q representative of the digital value of the in-phase and quadrature data output signals respectively; e. code converter means coupled to said delay line and to said working storage means for converting binarily coded digital signals into sign magnitude coded signals.
Claim 2
Dependent Claim
186 words
A special purpose computer for performing a predetermined alogirthm and calculating a proper phase for demodulation of a communication carrier comprising: a. working storage means for storing signals representative of in-phase and quadrature data words I and Q respectively, inphase and quadrature carrier words X and Y respectively, and computed words G and R respectively; b. programming-unit means coupled to said working storage means, said programming-unit means responsive to timing signals for providing a predetermined sequence of electronic signals for directing the execution of a predetermined algorithm; c. calculating means coupled to said working storage register means and to said programming-unit means, said calculating means responsive to said programming-unit means for calculating the digital values X and Y representative of the in-phase and quadrature carrier output signals respectively; and d. delay means coupled to said working storage means for delaying the digital signals I and Q representative of the digital value of the in-phase and quadrature data output signals respectively; e. code converter means coupled to said delay line and to said working storage means for converting binarily coded digital signals into sign magnitude coded signals.
Claim 3
Dependent Claim
30 words
A special purpose computer as recited in claim 1 including sign storage means coupled to said working storage register means for storing the sign value of a word being processed.
Claim 4
Dependent Claim
4 words
Y . Y Y2
Claim 5
Dependent Claim
4 words
Y . Y Y2
Claim 6
Dependent Claim
4 words
X2 + Y2 R2
Claim 7
Dependent Claim
4 words
X2 + Y2 R2
Claim 8
Dependent Claim
65 words
A special purpose computer as recited in claim 2 wherein said calculating means further comprise an adder, an Md register coupled to said adder and a P register coupled to said adder, said Md register for storing information for adding or substracting to or from the information stored in the P register, and said P register for storing the result of addition by said adder.
Claim 9
Dependent Claim
25 words
A special purpose computer as recited in claim 3 including an MR register coupled to said adder for storing a multiplier during a multiply process.
Claim 10
Dependent Claim
2 words
G.G G2
Claim 11
Dependent Claim
2 words
G.G G2
Claim 12
Dependent Claim
37 words
A special purpose computer as recited in claim 4 including round-off circuit means coupled to said P register and to said adder for rounding of the least significant bit of the information stored in the P register.
Claim 13
Dependent Claim
5 words
G2/2 (shift right 1 bit)
Claim 14
Dependent Claim
5 words
G2/2 (shift right 1 bit)
Claim 15
Dependent Claim
4 words
(G2/2) . R2 E
Claim 16
Dependent Claim
4 words
(G2/2) . R2 E
Claim 17
Dependent Claim
39 words
A special purpose computer as recited in claim 4 including a P-mode switch coupled to said P register and wHerein said P register assumes a serial-in-parallel-out capability or a parallel-in-parallel-out capability under the control of said P mode switch.
Claim 18
Dependent Claim
59 words
A special purpose computer as recited in claim 4 including Md input control means coupled to said Md register, P input control means coupled to said P register, and MR input control means coupled to said MR register said Md, P and MR input control means for controlling the input signals to said Md, P and MR registers respectively.
Claim 19
Dependent Claim
4 words
3/2 - E F
Claim 20
Dependent Claim
4 words
3/2 - E F
Claim 21
Dependent Claim
4 words
G. F K reiterate,
Claim 22
Dependent Claim
4 words
G. F K reiterate,
Claim 23
Dependent Claim
39 words
A special purpose computer as recited in claim 7 including sign control means coupled to said sign storage means and to said Md, P and MR input control means for calculating the proper sign for the word being processed.
Claim 24
Dependent Claim
31 words
A special purpose computer as recited in claim 2 including variable gain amplifier means coupled to said delay means responsive to input signals for adjusting the gain of the output signals.
Claim 25
Dependent Claim
2 words
K.K K2
Claim 26
Dependent Claim
2 words
K.K K2
Claim 27
Dependent Claim
1 words
K2/2
Claim 28
Dependent Claim
1 words
K2/2
Claim 29
Dependent Claim
88 words
A special purpose computer for performing a predetermined algorithm and calculating a proper phase for demodulation of a communication carrier comprising: a. working storage means for storing signals representative of in-phase and quadrature data words I and Q respectively, in-phase and quadrature carrier words X and Y respectively, and computed words G and R respectively; b. programming-unit means coupled to said working storage means, said programming unit means responsive to timing signals for providing a predetermined sequence of electronic signals for directing the execution of the following algorithm,
Claim 30
Dependent Claim
88 words
A special purpose computer for performing a predetermined algorithm and calculating a proper phase for demodulation of a communication carrier comprising: a. working storage means for storing signals representative of in-phase and quadrature data words I and Q respectively, in-phase and quadrature carrier words X and Y respectively, and computed words G and R respectively; b. programming-unit means coupled to said working storage means, said programming unit means responsive to timing signals for providing a predetermined sequence of electronic signals for directing the execution of the following algorithm,
Claim 31
Dependent Claim
4 words
K2/2 . R2 E''
Claim 32
Dependent Claim
4 words
K2/2 . R2 E''
Claim 33
Dependent Claim
30 words
A special purpose computer as recited in claim 10 including code converter means coupled to said working storage means for converting binarily coded digital signals into sign magnitude coded signals.
Claim 34
Dependent Claim
30 words
A special purpose computer as recited in claim 11 including sign storage means coupled to said working storage register means for storing the sign value of a word being processed.
Claim 35
Dependent Claim
4 words
3/2 - E'' F''
Claim 36
Dependent Claim
4 words
3/2 - E'' F''
Claim 37
Dependent Claim
52 words
A special purpose computer as recited in claim 12 wherein said calculating means further comprise an adder, and Md register coupled to said adder and a P register coupled to said adder, said Md register for storing information for adding or subtracting to or from the information stored in the P register.
Claim 38
Dependent Claim
12 words
K. F'' G'' this G'' being the new G when used again,
Claim 39
Dependent Claim
12 words
K. F'' G'' this G'' being the new G when used again,
Claim 40
Dependent Claim
2 words
X.G'' C
Claim 41
Dependent Claim
2 words
X.G'' C
Claim 42
Dependent Claim
25 words
A special purpose computer as recited in claim 13 including an MR register coupled to said adder for storing a multiplier during a multiply process.
Claim 43
Dependent Claim
31 words
A special Purpose computer as recited in claim 10 including a variable gain amplifier means coupled to said delay means responsive to input signals for adjusting the gain of output signals.
Claim 44
Dependent Claim
2 words
Y.G'' D
Claim 45
Dependent Claim
2 words
Y.G'' D
Claim 46
Dependent Claim
2 words
C.I I''
Claim 47
Dependent Claim
2 words
C.I I''
Claim 48
Dependent Claim
2 words
D.Q Q''
Claim 49
Dependent Claim
2 words
D.Q Q''
Claim 50
Dependent Claim
99 words
I'' + Q'' S where X the digital value of the in-phase carrier output, Y the digital value of the quadrature carrier output, I the digital value of the in-phase data output which is properly delayed, Q the digital value of the quadrature data output which is properly delayed, G (3/2 - K2.R2/2) k-1, and the remaining symbolism being derived quantities and defined by their respective equations; d. and delay means coupled to said working storage means for delaying the digital signals I and Q representative of the digital value of the in-phase and quadrature data output signals respectively.
Claim 51
Dependent Claim
99 words
I'' + Q'' S where X the digital value of the in-phase carrier output, Y the digital value of the quadrature carrier output, I the digital value of the in-phase data output which is properly delayed, Q the digital value of the quadrature data output which is properly delayed, G (3/2 - K2.R2/2) k-1, and the remaining symbolism being derived quantities and defined by their respective equations; d. and delay means coupled to said working storage means for delaying the digital signals I and Q representative of the digital value of the in-phase and quadrature data output signals respectively.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |