Playback apparatus and playback method

Details Playback apparatus and playback method Playback apparatus and playback method

1997-07-10

1999-11-16

Chin, Stephen

Pulse or digital communications

Synchronizers

Synchronizing the sampling time of digital data

H04L 700

Patent

active

059870826

ABSTRACT:
To reduce a data-error rate caused by interpolation errors. An adder computes the sum of a sampled value Si+1 of a playback signal and a value 8.times.Si+1 produced by a bit shifter to output the sum 9.times.Si+1 to an adder. The adder adds the sum (9.times.Si+1) supplied thereto by the adder to a sum (9.times.Si) supplied thereto after being delayed by a delay element and outputs the result of the addition (9.times.Si+9.times.Si+1) to an adder. An adder computes the sum of a sampled value Si-1 supplied thereto after being delayed by delay elements and a sampled value Si+2 supplied thereto by an A/D converter and outputs sum (Si-1+Si+2) to the adder. The adder which is used as a subtractor computes the difference between the sum (9.times.Si+9.times.Si+1) supplied thereto by the adder and the sum (Si-1+Si+2) supplied thereto by the adder and outputs the difference (Si-1-9.times.Si-9.times.Si+1+Si+2) to a bit shifter. The bit shifter shifts the difference (Si-1-9.times.Si-9.times.Si+1+Si+2) supplied thereto by the adder by four bits toward the LSB and outputs the right-shifted value (Si-1-9.times.Si-9.times.Si+1+Si+2)/16 to a second interpolation circuit as a first interpolation value Si' along with the sampled values Si and Si+1. As a result, the number of sampled values seemingly appears increased.

REFERENCES:
patent: 4672597 (1987-06-01), Yamazaki
patent: 4704711 (1987-11-01), Gerard et al.
patent: 5440532 (1995-08-01), Yokogawa et al.
patent: 5553055 (1996-09-01), Yokota et al.
patent: 5559513 (1996-09-01), Rothermel et al.
patent: 5579004 (1996-11-01), Linz
patent: 5589830 (1996-12-01), Linz et al.
patent: 5590100 (1996-12-01), Ogusu et al.
patent: 5848047 (1998-12-01), Fujimoto
U.S. application No. 08/887,519, filed Jul. 3, 1997.

Affiliated with

Also associated with

Rating

Playback apparatus and playback method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Playback apparatus and playback method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Playback apparatus and playback method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1334009