Abstract: A patient support apparatus includes an air supply and an air fluidization therapy bed including a fluidization space and a fluidizable medium positioned in the fluidization space. The air fluidization therapy bed receives a flow of pressurized air from the air supply. The flow of pressurized air operable to fluidize the fluidizable medium. The patient support apparatus is configured to provide other therapies, such as pulmonary therapies, in addition to the air fluidization therapy.

Abstract: A varying depth fluidized bed comprises a tank assembly containing fluidizable medium. The tank assembly comprises at least one step such that the depth of fluidizable medium is greater in one region of the tank assembly relative to another.

Abstract: A patient support apparatus includes an air supply and an air fluidization therapy bed including a fluidization space and a fluidizable medium positioned in the fluidization space. The air fluidization therapy bed receives a flow of pressurized air from the air supply. The flow of pressurized air operable to fluidize the fluidizable medium. The patient support apparatus is configured to provide other therapies, such as pulmonary therapies, in addition to the air fluidization therapy.

Abstract: A fabric diffuser for use with a fluidized person support apparatus is disclosed. A fluidized bed comprises a tank assembly containing fluidizable medium. The tank assembly comprises a fabric diffuser through which fluid is introduced into the fluidizable medium.

Abstract: A varying depth fluidized bed comprises a tank assembly containing fluidizable medium. The tank assembly comprises at least one step such that the depth of fluidizable medium is greater in one region of the tank assembly relative to another.

Abstract: A picture in picture (PIP) video signal is applied to a display device via a non-linear processor that is enabled during display of a main picture component and disabled during display of an inset picture component responsive to a PIP identification signal. The non-linear processor is formed in an integrated circuit which includes a pin for connection to a capacitor that stores peak levels of the PIP video signal. The PIP identification signal is subjected to a voltage level translation for varying the pin voltage over a range of values, .DELTA.V, for facilitating ON/OFF operation of the non-linear processor and is applied to a selected plate of the capacitor for varying the pin voltage without substantial alternation of charge stored within the capacitor whereby only a single pin is required for both capacitor storage and on/off control of the non-linear processor and undesirable visual artifacts, such as "trailing contrast bars", are avoided.

Abstract: A composite video input signal is delayed by a delay element and the delayed composite signal is applied to luminance and chrominance inputs of a picture processor for received signals of an NTSC format. For received signals of a PAL format, the delayed composite signal is applied only to the luminance input of the picture processor and the chrominance component of the received signal is transcoded to the NTSC format and applied, without passing through the composite signal delay element, to the chrominance input of the picture processor. The delay of the delay element for the composite video signal is selected to be equal to the transcoding delay whereby luminance and chrominance components of received signals of either NTSC or PAL format are delay compensated.

Abstract: A network combines luminance and chrominance signals to provide a composite video signal wherein the chrominance signal is subjected to band pass filtering to reject low frequency noise and the luminance signal is subjected to filtering by a predetermined amount at the color subcarrier frequency to reject color dots. In a preferred implementation, the filter is realized with only one inductor and one capacitor thereby preventing displayed artifacts with the economic and reliability benefits of minimal parts count.