The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 1991
Filed:
Jul. 23, 1989
Thomas Heidt, Long Valley, NJ (US);
James C Wickstead, Mendham, NJ (US);
Other;
Abstract
The invention is generally directed to a video apparatus for storing video images on a recording medium and replaying the stored images on a display. A camera mechanism converts light images into electrical video signals. A processor circuitry coupled to the camera mechanism includes means for converting the electronic video signals into a low bandwidth frequency modulated storage signal with the bandwidth substantially lower than in a standard television video signal. A recording mechanism coupled to the processing means stores the low bandwidth frequency modulated storage signal on an audio cassette, which has a standard speed allowing storage of an audio bandwidth signal. The recording mechanism includes a drive mechanism for driving the audio cassette at higher than normal speed to increase the bandwidth storage capacity of the audio cassette. A recording head mechanism stores the low bandwidth frequency modulated storage signal on the audio cassette. The video apparatus also includes a switch mechanism for switching the video apparatus from a record mode where video images are stored on an audio cassette to a playback mode where the stored images are read off the audio cassette and displayed on the video display. In playback mode, the low bandwidth video signal is converted to a higher frequency standard television bandwidth video signal for display. The rate conversion from a low bandwidth video signal to a standard television video signal is performed by a 'ping-pong' digital memory system. The video apparatus also adjusts the sensitivity of the camera mechanism by adjusting the exposure time of the camera mechanism based on the incident light.