EP0010077A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A method of and an arrangement for regulating the phase position of a controlled signal in relation to a reference signal in a telecommunication system
Assignee: Telefonaktiebolaget LM Ericsson AB
•
Filing: 1979-09-21
•
Granted: —
•
Expires: 1999-09-21
Abstract
Abstract The invention relates to a method for regulating the phase position of a controlled signal in relation to the phase position of a reference signal in a telecommunication system, and an arrangement for carrying out the method. The reference signal (C2) is delayed in a delay circuit (DL1) and the delayed reference signal (Dl) is compared with a controlled signal (Cl) in a first comparison circuit (FF1) which produces a first comparison signal (Q1) at a high or a low level in dependence on the phase difference between the delayed reference signal (D1) and the controlled signal (C1). The controlled signal (C1) is delayed in a delay circuit (DL2) and the delayed controlled signal (D2) is compared in a second comparison circuit (FF2) with reference signal (C2). The second comparison circuit (FF2) produces a second comparison signal (Q2) which is at a high or a low level in dependence on the phase difference between the signal (D2) and the reference signal (C2). The outputs from the comparison circuits (FF1), FF2) are connected to a logic circuit (LC). In dependence on the signal combination received at its inputs the logic circuit produces a binary control signal which is used to correct the phase position of the controlled signal (C1) in relation to the phase position of the reference signal (C2).
Inventors
- 👤 Karl Arne Ingemar Andersson
- 👤 Sture Gösta Roos
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 08:57
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/08; H03L7/085; H04; H04L; H04L7/00; H04L7/02; H04L7/033
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
181 words
1 A method for regulating the phase position of a control signal in relation to a reference signal in a telecommunication system. characterized in that the reference signal (C2) is delayed, the Layed reference signal (D1) is compared with the controlled signal (C1) to produce a first comparison signal (Q1) which is at a high or a low level respectively depending on the phase difference between the delayed reference signal (D1) and the controLLed signal (C1), the controlled signal (C1) is delayed, the delayed controlled signal (D2) is compared with the reference signal (C2) to produce a second comparison signal (Q2) which is at a high and a low level respective depending on the phase difference between the delayed controlled signal (D2) and the reference signal (C2), and a further signal is produced by logic circuitry, according to the logic levels of said first and second comparison signals (Q1 and Q2), said further signal being used as a control signal to correct the phase position of the controlled signal (C1) in relation to the phase position of the reference signal (C2).
Claim 2
Dependent Claim
181 words
1 A method for regulating the phase position of a control signal in relation to a reference signal in a telecommunication system. characterized in that the reference signal (C2) is delayed, the Layed reference signal (D1) is compared with the controlled signal (C1) to produce a first comparison signal (Q1) which is at a high or a low level respectively depending on the phase difference between the delayed reference signal (D1) and the controLLed signal (C1), the controlled signal (C1) is delayed, the delayed controlled signal (D2) is compared with the reference signal (C2) to produce a second comparison signal (Q2) which is at a high and a low level respective depending on the phase difference between the delayed controlled signal (D2) and the reference signal (C2), and a further signal is produced by logic circuitry, according to the logic levels of said first and second comparison signals (Q1 and Q2), said further signal being used as a control signal to correct the phase position of the controlled signal (C1) in relation to the phase position of the reference signal (C2).
Claim 3
Dependent Claim
185 words
2 An arrangement for regulating the phase position of a controlled signal in relation to a reference signal in a telecommunication system, characterized in that it comprises a first comparison circuit (FF1) of a type which in dependence on the phase difference between two signals fed to two of its inputs produces an output signal at a high and a Low LeveL respectively, said first comparison circuit having a first input connected to a first delay circuit (DL1) which is adapted to receive the reference signal and a second input which is adapted to receive the controlled signal (C1) directly, and a second comparison circuit (FF2), of the same type as the comparison circuit (FF1), having a first input connected to a second delay circuit (DL2) which is adapted to receive the controlled signal (C1) and a second input which is adapted to receive the reference signal (C2) directly, and outputs of said first and second comparison circuits (FF1, FF2) being connected to a Logic circuit (LC) for producing a control signal which depends on the Logic levels of said outputs of said comparison circuits.
Claim 4
Dependent Claim
185 words
2 An arrangement for regulating the phase position of a controlled signal in relation to a reference signal in a telecommunication system, characterized in that it comprises a first comparison circuit (FF1) of a type which in dependence on the phase difference between two signals fed to two of its inputs produces an output signal at a high and a Low LeveL respectively, said first comparison circuit having a first input connected to a first delay circuit (DL1) which is adapted to receive the reference signal and a second input which is adapted to receive the controlled signal (C1) directly, and a second comparison circuit (FF2), of the same type as the comparison circuit (FF1), having a first input connected to a second delay circuit (DL2) which is adapted to receive the controlled signal (C1) and a second input which is adapted to receive the reference signal (C2) directly, and outputs of said first and second comparison circuits (FF1, FF2) being connected to a Logic circuit (LC) for producing a control signal which depends on the Logic levels of said outputs of said comparison circuits.
Claim 5
Dependent Claim
53 words
3 An arrangement according to claim 2, characterized in that when the undelayed controlled signal (C1) arrives later than the delayed reference signal (D1), the first comparison circuit (FF1) produces an output signal (Q1) at a high level, and the second comparison circuit (FF2) produces an output signal (Q2) at a low level.
Claim 6
Dependent Claim
52 words
4 An arrangement according to claim 2, characterized in that when the reference signal (C2) arrives later than the delayed controlled signal (D2), the first comparison circuit (FF1) produces an output signal (Q1) at a low level, and the second comparison circuit (FF2) produces an output signal (Q2) at a high LeveL.
Claim 7
Dependent Claim
52 words
5 An arrangement according to claim 2, characterized in that when the phase difference between the two undelayed signals (C2) and (C1) is Less than the delay of the reference signal (C2), the output signals (Q1, Q2) of the first and second comparison circuits (FF1 and FF2) are at a low level.
Claim 8
Dependent Claim
64 words
6 An arrangement according to claim 2, characterized in that when the phase difference between a positive edge of the undelayed reference signal (C2) and a negative edge of the undelayed controLLed signal (C1) is Less than the delay of the reference signal (C2), the output signals (Q1, Q2) of the first and second comparison circuits (FF1 and FF2) are at a high LeveL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.