Recording system

• US 3,221,334 A
• Filed: 03/23/1961
• Issued: 11/30/1965
• Est. Priority Date: 03/23/1961
• Status: Expired due to Term

• Current Assignee: Jones Jr John Paul
• Original Assignee: Jones Jr John Paul
• Inventors: JONES JR JOHN PAUL
• Application Number:
  US04/097,864
• Time in Patent Office: 1,713 Days
• US Class Current: 346/33.00M
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence

Claims

1. A RECORDING SYSTEM COMPRISING, IN COMBINATION, CYCLICAL INFORMATION STORAGE MEANS, MEANS FOR RECORDING INFORMATION HAVING HIGH FREQUENCY COMPONENTS ON SAID INFORMATION STORAGE MEANS AT A FIRST RATE OF SPEED, MEANS FOR DERIVING RECORDED INFORMATION FROM SAID INFORMATION STORAGE MEANS AT A SECOND RATE OF SPEED, SAID SECOND RATE OF SPEED EXCEEDING SAID FIRST RATE OF SPEED, MEANS FOR DERIVING A SYNC PULSE FROM SAID STORAGE MEANS ONCE DURING EACH CYCLE THEREOF, A LOW SPEED RECORDING INSTRUMENT INCAPABLE OF REPRODUCING THE HIGH FREQUENCY COMPONENTS OF THE INFORMATION DIRECTLY, CONTROL MEANS FOR DELAYING SAID SYNC PULSE IN PROPORTION TO THE DISPLACEMENT OF A RECORDING MEDIUM FOR SAID RECORDING INSTRUMENT, MEANS RESPONSIVE TO SAID DELAYED SYNC PULSE TO PROVIDE A GATED SIGNAL FROM SAID MEANS DERIVING INFORMATION FOR EACH CYCLE WHICH VARIES IN AMPLITUDE IN PROPORTION TO THE HIGH FREQUENCY COMPONENTS OF INFORMATION WHICH IS RECORDED ON SAID INFORMATION STORAGE MEANS, AND MEANS FOR COUPLING A TRAIN OF THE GATED PULSES FOR RECORDING BY SAID RECORDING INSTRUMENT.