Cushman, Darby & Cushman
Television set with supervisory functions of alarming burglary and safe watching distance
 A television set suppresses its video display or responds in another preselected fashion when a viewer is too close to its screen, and is also capable of serving as a burglar alarm. A predetermined condition causes a detection device to generate a signal, which is processed and used to trigger either an alarm, video suppression circuitry or another preselected response. Provision is made for a delay in triggering to prevent undesired responses. 
G
G08B
inventional
Chi C. Tai H.
Ho Yang