摘要:
An instruction machine employing a multi-track (two channels on each track) tape recorder wherein analog instructions are recorded on one channel of a tape and control signals are recorded on the other channel. Control signals perform a number of functions and are recorded on a tape responsive to operation of a digital keyboard. Typically, an instructor would record a lecture on one channel and control signals (e.g. for reproduction of material recorded elsewhere) on the other channel, the control signals being positioned opposite points in a recorded lecture where some equipment control is desired, e.g. for providing supplemental displays or continuation of the lecture on another track. For example, a student might be questioned and the student required to indicate his answer by operation of the keyboard. If the student's answer did not display certain knowledge, represented by the selection of a correct answer coded on the control signal channel, the tape transport would be caused to move to a different track and field position on the tape to reproduce certain other lecture material in order that the student be given particular additional instruction.
摘要:
A system for detecting the position of a light responsive pen with respect to a TV display wherein successive frames of a video recording are encoded by placing a lighted area in a different place on each such successive frame. Then, by determining the frame number of the frame appearing when there is a response from the light pen, the position of the pen is identified and an appropriate system response is initiated and controlled.
摘要:
An interactive control system including a wide bandwidth, random access recorder including a recording which contains sequentially recorded discete sets of co-located video, audio and digital information including, for example, a question or other interrogation signal, and wherein at an end of a set of such co-located recorded information there would be recorded a multiplicity of digital signals, each signal being comprised of an "answer" portion and a "second location" portion. Further, circuitry is provided to halt the playback of the recording when an input from the user is required for the purposes of testing, measuring or selecting and where the recording medium is halted before the location of the multiplicity of digital signal portions is reached. Further, circuitry is provided for a digital response to the interrogation signal to be obtained from a manual or automatic operation and placed in a "response" digital storage register. After this is done, circuitry is provided to restart the recording medium and to play the sequentially encoded digital signal "answer" and "second location" portions through a digital shift register where they are successively, at high speed, compared to the digital response previously stored in the "response" storage register.
摘要:
A system for providing a record of each time any one of a plurality of remotely located locking devices is operated, as well as the number of the key used for each lock actuation. The disclosed system includes means located at each secured premises for sensing the actuation of the lock and the number of the actuation key; means for automatically telephoning to a central office the key number as well as a code which identifies the reporting facility; and means at the central office for recording this data and its time of receipt, and for providing a printout thereof.