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| Number | Title | Issue Date |
| 4422105 | Interactive system and method for the control of video playback devices The invention provides an interactive system and method for the control of video playback devices such as video tape recorders. The system allows user interaction with a prerecorded program which includes live video displays and alphanumeric displays. The... | 12/20/1983 |
| 4375101 | System for formatting data on video tape for high accuracy recovery A system for formatting data on video tape for high accuracy recovery in which binary data is recorded on the video signal track of video tape in a prearranged format of three redundant blocks of data words between successive vertical sync pulses. Each re... | 02/22/1983 |
