STUDY OBJECTIVES One of the most important caveats of ambulatory devices is the inability to record and stage sleep. We assessed an algorithm determining 4 different stages: wake, light sleep, deep sleep, and REM sleep using signals derived from the portable monitor Watch-PAT100 (PAT recorder). METHODS Participants (38 normal subjects and 189 patients with obstructive sleep apnea [OSA]) under...

We present the 3D Video Recorder, a system capable of recording, processing, and playing three–dimensional video from multiple points of view. We first record 2D video streams from several synchronized digital video cameras and store pre-processed images to disk. An off-line processing stage converts these images into a time–varying three– dimensional hierarchical point–based data structure and...

It records one or more variables with respect to time. It is a X-t recorder. A strip chart recorder consists of: 1. A long roll of graph paper moving vertically. 2. A system for driving a paper at some selected speed. A speed selector switch is generally provided. Chart speed of 1-100 m/s are usually used. 3. A stylus driving system which moves the stylus in a near exact replica or analog of th...

to a Leeds and Northrup Cleretrend 12 point recorder, provision being made for matching the photocell outputs. The recorder selects each channel in turn and prints a dot corresponding to the deflection from that channel. At the paper speed of 3 in. per hour the resultant trace is a continuous line. Channel identification is by colour and number. This type of recorder was chosen after careful co...

Consideration has been given to the effect of vacuum pan circulation on sugar quality particularly with reference to filterability. It has been suggested1 that the introduction of a mechanical circulator, or stirrer, would enable the process to be carried out within closer temperature limits, so that the occlusion of undesirable substances could be prevented. In considering the possible install...

The architecture of the device recording randomly occurring events has been described in the present study. A/m device has been designed and built in order to enable the recording of broad – band acoustic emission signal (AE). The system of the recorder has been configured in the manner enabling its operation in the autonomous unit operation mode or its application as IBM PC extension card. The...

The ability to archive Internet multimedia collaboration traffic is required in most applications. This paper presents the design and implementation of the Multimedia Conference Recorder, a system capable of recording and playing back multimedia data. The MMCR has been designed to have a client-server architecture; logical independence between components simplifies development and component rep...