Abstract: A system calculates the mutual satisfaction between negotiating parties and maximizes their mutual satisfaction over a range of decision variables and does so without requiring the parties to identify themselves and their positions to each other. For automatically negotiating agreements between multiple parties, a computer accepts a satisfaction function from an offering party who defines his degree of satisfaction to agree to a range of terms upon which the party is desirous of negotiating as a function of the relevant decision variables. The computer then accepts input from all other parties regarding their degree of satisfaction to agree to each of the terms as a function of a particular relevant decision variable. The computer then calculates a satisfaction function for each of these terms based on all of the individual inputs.

Abstract: Presented is an elastically deformable ring structure useful to effect the detachable mounting of a lens cap, filter, or light diffusion disk on the cylindrical lens barrel of a camera. The ring structure is elastically deformable from a non-cylindrical or non-circular configuration to a substantially cylindrical or circular configuration whereby the inherent resilience of the ring structure when mounted on the cylindrical lens barrel retains the ring structure in proper position detachably attached to the lens barrel.

Abstract: Presented in several different aspects is an incident light filter or cap assembly adapted to be attached over the lens of a camera for the purpose of permitting adjustment of the camera controls in view of the incident light conditions that exist at the time the picture is taken.

Abstract: Presented in several different aspects is an incident light filter or cap assembly adapted to be attached over the lens of a camera for the purpose of permitting adjustment of the camera controls in view of the incident light conditions that exist at the time the picture is taken.