Loading patent…
AssigneeNortel Networks Limited
InventorsJames Aweya, Delfin Montuno, Michel Ouellette, Kent Felske
Estimating the term…
A method and apparatus for designing a PLL enables initial component characteristics and design specifications of the PLL to be specified. Time constants for a loop filter that would be required to create a PLL having the desired design specifications and component characteristics are then computed. The performance or behavior characteristics of the PLL may then be computed for the PLL given the time constants and the initial set of components, to determine whether the performance of the PLL would be considered satisfactory. For example, PLL design software may determine whether a PLL would be sufficiently stable if it was to be created using the particular selected components given the required design specifications. Where the PLL does not meet particular behavior characteristics, the PLL design software may provide guidance as to what component characteristics would improve performance of the PLL. Designed PLLs may be used for timestamp based clock synchronization.
A computer implemented method of designing a timestamp-based third-order Phase Locked Loop (PLL) for clock synchronization in a packet network, the PLL including a loop filter, a Digital to Analog Converter (DAC), and an oscillator, the method comprising the steps of:
A computer implemented method of designing a third-order timestamp-based Phase Locked Loop (PLL) for clock synchronization in a packet network, the PLL including a loop filter, a Digital to Analog Converter (DAC), and an oscillator, the method comprising the steps of:
Computer software configured to aid in the design of a third-order PLL, said PLL comprising a phase detector, a loop filter, a digital to analog converter, and a local oscillator, the computer software comprising:
Dependencies are inferred from the claim text.