Frequency detection method for optical disc bit data...

Details Frequency detection method for optical disc bit data... Frequency detection method for optical disc bit data...

2005-02-09

2008-10-07

Criado, Jorge L Ortiz (Department: 2627)

Dynamic information storage or retrieval

Binary pulse train information signal

Having specific code or form generation or regeneration...

C369S059220, C369S047260, C369S047350, C369S047180

Reexamination Certificate

active

07433289

ABSTRACT:
The present invention relates to a frequency detection method for an optical disc bit data reproduction apparatus. The frequency detection method uses the optical disc bit data reproduction apparatus including an Analog to Digital Converter (ADC), an interpolator, an asymmetry compensator, a digital bit and successive bit length detector, a frequency detector, a phase detector and a Digital Controlled Oscillator (DCO). In the frequency detection method includes the primary frequency detection step and the secondary frequency detection step. In the primary frequency detection step, status of input RF digital bit data frequency versus sampling frequency is determined and the sampling frequency is corrected so as to allow the sampling frequency to be rapidly adjusted to the frequency of the RF digital bit data, thus primarily detecting frequency. In the secondary frequency detection step, the sampling frequency is more precisely adjusted to the frequency of the RF digital bit data if the sampling frequency is adjusted to the frequency of the RF digital bit data within a predetermined range at the primary frequency detection step, thus secondarily detecting frequency.

REFERENCES:
patent: 5986990 (1999-11-01), Moon

Affiliated with

Also associated with

Rating

Frequency detection method for optical disc bit data... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Frequency detection method for optical disc bit data..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency detection method for optical disc bit data... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3994889