Zoran Corporation

Jacob Finkelstein

Bassel Haddad

Rakefet Kol

Asa Levinger

A method and apparatus for recording data at specific locations on a DVD includes selectively detecting the occurrence of wobble sync during a window computed from previous occurrences of wobble sync and eight-to-fourteen modulation sync. The method and apparatus also uses a phase-locked loop to recover the wobble signal, including wobble sync, and computes phase drift between wobble sync and eight-to-fourteen modulation sync and applies a compensation profile, compatible with a read clock phase-locked loop, to the wobble phase-locked loop.

DVD&#x2212;R/RW and DVD+R/RW recorders

A phase measurement system for measuring phase between an input signal having a frequency and a reference signal having a substantially different frequency includes: a phase comparator having an output representing a time between a crossing of a first threshold by a clock derived from the reference signal and a predetermined time along an interval from a first sample to a second sample, where the input signal crosses a second threshold on the interval; an interpolator having an output indicative of an interpolated time of the second-threshold-crossing on the interval in the input signal; and a phase calculator which computes the phase difference by combining the phase comparator output and the interpolator output.

Method and apparatus for high resolution measurement of signal timing

In a device that utilizes a memory device, the access bandwidth of the memory device is efficiently utilized by determining a set of operations to be performed on information stored in the memory device, and sorting the operations into an order so as to minimize the number of accesses to the memory device to perform the operations. The sorted operations are then performed in that order. An example of such a device is an error correction decoder, such as for use with an optical disk reader or player. The error correction decoder generates error correction data, representing error correction operations, and sorts the error correction data into multiple sets, each set for correcting the errors in a respective row of an ECC block stored in an external buffer. The error correction operations are then performed row by row.

Growing community of inventors

Kfar-Saba, Israel

Jacob Finkelstein