Laser printer output of digitized EEG waveforms

Author

Jacobs, Ernest C. ; Collura, Thomas F. ; Burgess, R.C.

Author_Institution

Cleveland Clinic Found., OH, USA

fYear

1989

fDate

27-28 Mar 1989

Firstpage

99

Lastpage

100

Abstract

A method is described for stripchart style output of multichannel EEG waveforms from a computerized data acquisition system using a laser printer optimized for the task. The printer formats the binary digitized data, transmitted from the host computer. Data transmission and page formatting parameters are specified by an initialization sequence sent to the printer ahead of the multipage stream data. Scaling and formatting are performed in real time by the laser printer controller using a fast line-drawing algorithm to connect the data points. Vector graphics and ASCII text can be overlaid on the waveform image for axes, grids, and labels. A typical 10-s page of 16-channel EEG data (13-b sample at 200 Hz) is printed at a rate of 15 `pages/min´. The resolution of 400 dots per inch (DPI) provides higher-quality traces than traditional pen recorders

Keywords

electroencephalography; medical computing; printing; 200 Hz; ASCII text; binary digitized data; data transmission; digitized EEG waveforms; fast line-drawing algorithm; laser printer output; stripchart style output; vector graphics; Data acquisition; Data communication; Electroencephalography; Epilepsy; Jacobian matrices; Neurophysiology; Optical control; Optimization methods; Printers; Streaming media;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioengineering Conference, 1989., Proceedings of the 1989 Fifteenth Annual Northeast

Conference_Location

Boston, MA

Type

conf

DOI

10.1109/NEBC.1989.36717

Filename

36717