Method and system for precise time based presentation of recorde

Details Method and system for precise time based presentation of recorde Method and system for precise time based presentation of recorde

1994-06-15

1995-11-21

Kamm, William E.

Surgery

Truss

Pad

A61B 50432

Patent

active

054677742

ABSTRACT:
The method and system for precise time based presentation of recorded medical data, such as cardiac data, encephalographic data, fetal monitor data or the like, which has been recorded on an ordinary audio cassette tape utilizing an inexpensive presentation device. An off-the-shelf tape transport deck is utilized which operates at an actual presentation speed which varies in a linear fashion in response to variations of a control signal which do not vary by greater than a selected maximum value during a given time period and in a nonlinear fashion in response to variations of a control signal which do vary by greater than the selected maximum value during a given time period. A timing track signal is utilized to determine actual presentation speed and small variations between the desired presentation speed and the actual presentation speed are coupled to a linear control system and utilized to vary the control signal at a rate which does not exceed a first rate. Large variations between the desired presentation speed and the actual presentation speed are coupled to a nonlinear control system and utilized to vary the control signal with respect to time at a constant rate, ensuring stable operation despite the occurrence of large variations in presentation speed. An integration element is utilized in conjunction with the linear control system to induce a zero steady state error between desired presentation speed and the actual presentation speed over time while the linear control system is active.

REFERENCES:
patent: 4696306 (1987-09-01), Shiozaki
patent: 5080705 (1992-01-01), Thomton
patent: 5406955 (1995-04-01), Bledsoe et al.

Affiliated with

Also associated with

Rating

Method and system for precise time based presentation of recorde does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for precise time based presentation of recorde, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for precise time based presentation of recorde will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1130809