Abstract: An activity monitor system monitors a location using a sensor system and detects and responds to “interesting events.” The system may detect events based on video processing of a substantially live sequence of images from a video camera. The system may use multi-region processing including modifying event detection based on motion in one or more regions, motion transitions, and/or motion entry and/or exit points. Events may be detected based on other sensors and the system may use a combination of sensor data to detect events. The system may store event data from the one or more sensors (e.g., video, audio, etc.) for interesting events and/or trigger alarm actions. Alarm actions may include sounding an audible alarm and enabling a substantially live video display on a monitoring device concurrently with the audible alarm. In embodiments, the activity monitor system is implemented using a smartphone and a wireless network camera.

Abstract: An activity monitor system monitors a location using a sensor system and detects and responds to “interesting events.” The system may detect events based on video processing of a substantially live sequence of images from a video camera. The system may use multi-region processing including modifying event detection based on motion in one or more regions, motion transitions, and/or motion entry and/or exit points. Events may be detected based on other sensors and the system may use a combination of sensor data to detect events. The system may store event data from the one or more sensors (e.g., video, audio, etc.) for interesting events and/or trigger alarm actions. Alarm actions may include sounding an audible alarm and enabling a substantially live video display on a monitoring device concurrently with the audible alarm. In embodiments, the activity monitor system is implemented using a smartphone and a wireless network camera.

Abstract: An order persistent timer is provided in each station on a network to control the timing of transmission of each isochronous data packet from a station, and to also control the timing of transmission of asynchronous data packets that include reservation requests. The OP timer at each station monitors traffic on the network from other stations to detect whether the network is active or idle. In an active state, the OP timer times a set interval of time sufficient to indicate the successful transmission of a packet on the frame. In the idle state (no packet on the network from another station), the OP timer times a number of deferral time intervals that are used with a network interrupt handler at the station to control the transmission of isochronous data packets without collision, and asynchronous data packets thereafter.

Abstract: The present invention has solved the collision problems in a CSMA network protocol and at the same time optimized performance of the network. This is accomplished by giving control of the size of the reserved portion and the size of the reservation portion of the communication frame to stations in the network. Further, the reserved portion is allotted to isochronous data packets each of whose length is variable. Also, only those packets that have a reservation are in the frame, and they are placed in the frame in order in accordance with there position of the permission or reservation list.The network timing is controlled by one of the stations acting as a conductor for the network. This conductor station receives the reservation requests from the other stations and builds a beat packet. The beat packet is transmitted from the conductor station to all stations of the network, and provides the timing or beat of the network that all stations are synchronized with.