Abstract: Apparatus and methods are provided in which software resident on a user's computer interfaces with software and/or supplemental information resident on a provider's computer via a transmission line to manipulate a batch of data from a plurality of records extracted from a user's mailing list. In a preferred embodiment, the user resident software directs the user's computer to extract data from multiple records within the user's mailing list. The user resident software then batches the extracted information, and transmits it across a transmission line to the provider's computer. The provider's computer then performs mailing list related functions on the batch using the provider resident software and information. The provider's computer then either transmits updated, sorted or otherwise modified data back to the user's computer for reintegration into the user's mailing list, print labels, reports or produce other output at the provider's location, or performs some other function with the data.

Abstract: Disclosed is a method and apparatus for combining first and second video signals to produce a composite video signal for display. First and second video sources generate first and second video signals. A chroma key circuit is included for comparing each pixel of the first video signal with a preselected color and generating logic signals indicating whether or not each pixel matches the preselected color. An input lock map stores each of the logic signals when field data is in a first state and provides the logic signals on an output line thereof when the field data is in a second state. A frame buffer selectively receives (1) a complement of the logic signals when the field data is in the first state and (2) the logic signals when the field data is in the second state.