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:
Dec. 26, 1989
Filed:
Mar. 25, 1988
Douglas J Greenwold, Rockville, MD (US);
Herbert E Reinhold, Jr, Rockville, MD (US);
Survival Technology, Inc., Bethesda, MD (US);
Abstract
A device for measuring electrical activity of the heart of a user. The portable device includes structure for receiving at least two leads of electrical activity of the heart of the user. This information is amplified, and coupled to a memory to produce audio signals of a form suitable for transmission over telephone lines in response to input signals. These input signals can be either from the memory or from the output of the amplifier, depending on the mode being commanded. A control structure commands the mode of operation. Live mode allows the acquired input to pass directly to the speaker, to be passed over the telephone lines. Recording mode records the input. Time interval mode records the entire capacity of the memory once. Rolling mode continually acquires and displaces other information that was previously in place. The device plays back a plurality of channels from the memory simultaneously over the telephone line so that these plurality of channels are received by the other end in a synchronized fashion. In addition, the device can operate in either a silent mode, in which information is recorded without any audio information being produced, or a sound mode in which audio information indicative of the information that is being stored is produced.