Abstract: Examples described herein relate to concurrently performing operations on optical signals. In an example, a method includes providing, to an optical circuit, a first plurality of signals having a first optical property and encoding a first vector. A second plurality of signals is provided to the circuit that encodes a second vector and has a second optical property that is different from the first optical property. A first attribute-dependent operation is performed on the first plurality of signals via the circuit to perform a first matrix multiplication operation on the first vector, and concurrently, a second attribute-dependent operation is performed on the second plurality of signals to perform a second matrix multiplication operation on the second vector. The first matrix multiplication operation and the second matrix multiplication operation are different based on the first optical property being different from the second optical property.

Abstract: Examples described herein relate to concurrently performing operations on optical signals. In an example, a method includes providing, to an optical circuit, a first plurality of signals having a first optical property and encoding a first vector. A second plurality of signals is provided to the circuit that encodes a second vector and has a second optical property that is different from the first optical property. A first attribute-dependent operation is performed on the first plurality of signals via the circuit to perform a first matrix multiplication operation on the first vector, and concurrently, a second attribute-dependent operation is performed on the second plurality of signals to perform a second matrix multiplication operation on the second vector. The first matrix multiplication operation and the second matrix multiplication operation are different based on the first optical property being different from the second optical property.

Abstract: A valve structure for a swimming pool water filter includes:(a) a hollow body having multiple flow apertures,(b) a rotary plate on the body and having flow porting, the plate being movable toward and away from said flow apertures,(c) seal means between the body and plate,(d) a handle having operative connection to the plate to rotate said plate to bring said plate porting into and out of selected registration with said flow apertures,(e) and means mounting the handle to pivot without rotating the plate, and between a first position in which the handle has moved the plate to energize the seal means to seal off between the body and plate, and a second position in which the handle has moved the plate to de-energized said seal means.

Abstract: In an underwater pool or spa light assembly for retaining an annular lens gasket and light housing in position, comprises:(a) a face ring having a central axis and annular re-entrant wall defining an annular flared portion to seat the gasket assembly, the ring also having retainer structure to retain said light housing which is engageable with the gasket to annularly compress same axially,(b) and circularly spaced tabs on the ring and projecting generally axially beyond the edge of the annularly flared portion to peripherally position the gasket, blocking radially outward extrusion thereof when compressed by the housing.

Abstract: A light unit assembly adapted to illuminate liquid below a liquid surface (for example of a pool or spa) includes(a) a lamp unit including a metallic housing adapted to be cooled by heat transfer to the liquid, and lamp circuitry,(b) a thermostat coupled to the lamp circuitry to control electrical energization of the lamp, and(c) a heat conductive metallic strip associated with said housing and thermostat to become increasingly heated for changing the conductive state of the lamp in response to diminished cooling of the housing by said liquid.