Abstract: An optical film includes a plurality of polymeric layers shaped along orthogonal first and second directions. A first curve being an intersection of the optical film with a first plane orthogonal to the second direction and to a reference plane has a best-fit first circular arc subtending a first angle at a center of curvature of the first circular arc of greater than 180 degrees where the optical film has a maximum projected area in the reference plane. A second curve being an intersection of the optical film with a second plane orthogonal to the first direction and to the reference plane has a best-fit second circular arc subtending a second angle at a center of curvature of the second circular arc of at least 30 degrees. Reflectance and transmittance of the optical film are described.

Abstract: A bed monitoring system that remotely monitors a patient bed. The bed monitoring system comprises a bed status system and a master station. The bed status system is coupled to the patient bed and is configured to monitor at least one condition of the bed, and to generate a bed message indicating the status of the monitored condition. The master station, remote from the patient bed, is operatively coupled to the bed status system to receive bed status information. The bed message can include a bed identifier, bed type identifier, patient exit detection signal, bed occupied signal, or various other status signals. The system can also include locating stations that receive the bed messages from any beds within its monitored location, and generates a station message including information from the bed messages. The master station receives the station messages and can determine the status and location of any bed.

Abstract: A system is provided for locating and tracking tags within an area. Each tag includes a transmitter configured to transmit a unique identifier periodically. Location messages are received and processed by at least one monitoring system to determine whether a tag has changed location.

Abstract: A system is provided for locating and tracking tags within an area. Each tag includes a transmitter configured to transmit a unique identifier periodically. Location messages are received and processed by at least one monitoring system to determine whether a tag has changed location.

Abstract: A system is provided for locating and tracking tags within an awareness area including a first sub-awareness area and a second sub-awareness area. Each tag includes a transmitter configured to transmit a unique identifier periodically, and at least one tag is assigned to the first sub-awareness area. The system includes a first monitoring system associated with the first sub-awareness area and a second monitoring system associated with the second sub-awareness area.

Abstract: A personnel and asset tracking system for locating and tracking objects throughout an awareness area comprises a communication network, a central server connected to said communication network maintaining an awareness area database, a plurality of receiver nodes, and a plurality of tags. Each tag is associated with an object to be tracked and has a transmitter which periodically transmits a tag transmission including a unique object identifier.

Abstract: A system is provided for locating and tracking tags within an awareness area including a first sub-awareness area and a second sub-awareness area. Each tag includes a transmitter configured to transmit a unique identifier periodically, and at least one tag is assigned to the first sub-awareness area. The system includes a first monitoring system associated with the first sub-awareness area and a second monitoring system associated with the second sub-awareness area.

Abstract: A patient/nurse call system for a hospital includes patient stations capable of generating hospital calls and a remote master station which prioritizes and stores the calls. Hall units outside patient rooms identify the rooms from which the calls originate and the type of call. Each patient station allows selective retrieval and display of unanswered calls, and the system further permits audio interconnection between any two of the stations. Nurse-worn badges transmit pulse-coded infrared signals which are received by receivers at the patient stations and in response, the system generates identity and location signals which are stored at the master station. The nurse location and identity information may also be retrieved and displayed at any patient station. Receipt of a nurse's infrared signal at a room station automatically cancels a patient call originating from the room and display thereof by the respective hall unit, while actuating a display to indicate nurse presence.