Abstract: An apparatus for receiving, detecting and storing a series of discrete bits of data transmitted in conjunction with a video signal wherein only a portion of the transmitted data is read and saved.

Abstract: A descrambler apparatus for use with a video transmitter which transmits scrambled video transmission without detectable horizontal or vertical synchronizing pulses but with a descramble signal which occurs at a random time in each frame and which is coded with information indicating the length of time that the signal precedes a fixed preselected point in the transmitted frames. The descrambler apparatus detects the coding of each descramble signal and, after a length of time corresponding to the coding, generates a full frame sequence of horizontal and vertical sync pulses starting at the preselected point in a frame. The generated sync pulses are combined with the received video signals to produce a properly synchronized video signal.

Abstract: Apparatus for sensing the arrival of a motor vehicle at the pick-up window of a drive-thru business and providing a visual display of the length of time that the motor vehicle is present at the window. Visual and audible alarms apprise operating personnel that the vehicle has been present for a predetermined length of time. The apparatus also totals and displays the number of vehicles as well as the total duration of stay of all vehicles arriving at the pick-up window.The motor vehicles are sensed by means of a vertically oriented rectangular loop detector positioned beneath the pick-up window adjacent the vehicle approach lane. The detector senses the metallic sides of the approaching vehicle, and is shielded to prevent spurious signals.The apparatus finds particular application for improving the working efficiency of operating personnel of the drive-in business.