Device for measuring multiple channels of heartbeat activity and encoding into a form suitable for simultaneous transmission over

Claim 2

A portable measuring device for acquiring, storing and transmitting electrical activity of a heart of a user comprising: connector means for receiving signals indicative of at least two leads of electrical activity of the heart of the user; means for amplifying said signals to produce at least first and second electrical activity signals from said signals indicative of at least two leads of electrical activity; memory means, coupled to said amplifying means to receive said first and second electrical activity signals at an input thereof, for storing information indicative of said first and second electrical activity signals; audio information producing means for selectively producing audio signals of a form suitable for transmission over telephone lines in response to input signals to be transmitted; and control means for controlling operation of said device, coupled to said memory means and said audio information producing means, comprising: (a) first means for commanding said device to operate in a live mode by connecting said at least first and second electrical activity signals which are currently being produced by said amplifying means to said audio information producing means as said input signals thereto, so that said audio information producing means produces audio signals indicative of said at least first and second electrical activity signals simultaneously for transmission over said telephone lines; (b) second means for commanding said memory means to record said first and second electrical activity signals; and (c) playback command means operating at least in a simultaneous mode for commanding said memory means to play back the stored information thereof in the form of input signals to said audio information producing means such that said audio information producing means produces audio signals indicative of said at least first and second electrical activity signals simultaneously for transmission over said telephone lines.

Claim 3

A device as in claim 1 further comprising more than two electrodes, coupled to said connector means, for attaching to said user to measure said electrical activity of said heart thereof.

Claim 4

A device as in claim 2 wherein said second means includes means for commanding said memory means into a rolling mode where information is continually being stored in said memory means, new information erasing previous information stored during a previous time interval; (c) third means for commanding said memory means into a time interval mode to store said at least first and second electrical activity signals for a time interval; wherein the command of said memory means into said rolling mode by said second means and into said time interval mode by said third means is selectably connected means to respective ones of said electrodes.

Claim 5

A device as in claim 3 further comprising a switch within said connector means which is selectively actuated by a connection of said electrodes to said connector means.

Claim 6

A device as in claim 3 wherein said control means further comprises means for indicating an abnormal heart activity beginning in a rolling mode, to store a predetermined time before said beginning and a predetermined time after said beginning.

Claim 7

A device as in claim 5 wherein said predetermined time after said beginning is selectable by said selectably connected means.

Claim 8

A device as in claim 3 further comprising (d) fourth means for commanding said audio information producing means to be on or off during said time interval mode.

Claim 9

A device as in claim 2 wherein there are three electrodes, including two underarm electrodes, and a belt electrode.

Claim 10

A device as in claim 2 wherein said amplifying means comprise a plurality of differential amplifiers, coupled to said connector means, each receiving signals from at least two of said electrodes.

Claim 11

A device as in claim 1 when said memory means comprises a digital memory, an analog to digital converter connected to an output of said amplifying means for converting said output of said amplifying means to a digital signal and for providing said signal to said digital memory; and a digital to analog converter, connected to an output of said digital memory, for converting said output of said digital memory to an analog signal.

Claim 12

A device as in claim 10 wherein said first means includes means for bypassing said analog to digital converter, said memory means and said digital to analog converter.

Claim 13

A device as in claim 10 wherein said first means is coupled to said output of said amplifying means and to said audio information producing means and is operable in response to a command signal to command said device to operate in said live mode.

Claim 14

A device as in claim 1 wherein said audio information producing means comprises at least one voltage controlled oscillator, receiving the input signals to which said audio information producing means is responsive.

Claim 15

A device as in claim 13 wherein said audio information producing means further comprises an audio amplifier and a speaker.

Claim 16

A device as in claim 14 wherein each of said at least one voltage controlled oscillator operate at different frequencies, respectively.

Claim 17

A device as in claim 1 wherein said play back command means also includes means for operating said memory means in a sequential mode wherein stored information indicative of said at least first electrical activity signal is first played back, followed by stored information indicative of said at least second electrical activity signal being played back.

Claim 18

A device as in claim 16 further comprising timer means, for initiating a timer count upon play back of said memory means stored information indicative of said at least first electrical activity signal or said second electrical activity signal, and erase-after-play means, coupled to said timer means, for commanding said memory means to erase the stored information thereof after said timer count has been completed.

Claim 19

A device as in claim 17 wherein said timer means is reset by initiation of another play back command.

Claim 20

A device as in claim 18 further comprising a battery for powering said portable apparatus.

Claim 21

A device as in claim 19 further comprising a portable housing containing said connector means, said amplifying means, said memory means, said audio information means and said control means.

Claim 22

A device as in claim 1 further comprising timer means, for initiating a timer count upon play back of said memory means, and erase-after-play means, coupled to said timer means, for commanding said memory means to erase the stored information thereof after said timer count has been completed.

Claim 23

A device as in claim 21 wherein said timer means is reset by initiation of another play back command.

Claim 24

A device as in claim 1 wherein said first means is coupled to the output of said amplifying means and to said audio information producing means and is operable in response to a command signal to command said device to operate in said live mode.

Claim 25

A portable device for acquiring, storing and transmitting electrical activity of a heart of a user comprising: connector means for receiving signals indicative of at least two leads of electrical activity of the heart of the user; means for amplifying said signals to produce at least first and second electrical activity signals from said signals indicative of at least two leads of electrical activity; memory means, coupled to said amplifying means to receive said first and second electrical activity signals at an input thereof, for storing information indicative of said first and second electrical activity signals; audio information producing means for selectively producing audio signals of a form suitable for transmission over telephone lines in response to input signals to be transmitted; and control means for controlling operation of said device coupled to said memory means and said audio information producing means, comprising: (a) first means for commanding said device to operate in a live mode by connecting said at least first and second electrical activity signals which are currently being produced by said amplifying means to said audio information producing means as said input signals thereto so that said audio information producing means produces audio signals indicative of said at least first and second electrical activity signals simultaneously for transmission over said telephone lines; (b) second means for commanding said memory means to record information indicative of said at least first and second electrical activity signals; (c) play back command means for selectively commanding said memory means to play back to stored information thereof in the form of input signals to said audio information producing means, so that said audio information producing means produces audio signals indicative of said played back stored information; (d) timer means for initiating a timing sequence upon completion of said play back, and continuing said timing as long as another command from said play back command means is not initiated; and (e) erase-after-play means, coupled to said timer means, for producing a signal commanding erasure of said memory means after said timer reaches a predetermined value.

Claim 26

A portable device for acquiring, storing and transmitting electrical activity of a heart of a user comprising: connector means for receiving signals indicative of at least two leads of electrical activity of the heart of the user; means for amplifying said signals to produce at least first and second electrical activity signals from said signals indicative of at least two leads of electrical activity; memory means, coupled to said amplifying means to receive said first and second electrical activity signals at an input thereof, for storing information indicative of said first and second electrical activity signals; audio information producing means for selectively producing audio signals of a form suitable for transmission over telephone lines in response to input signals to be transmitted; and control means for controlling operation of said device coupled to said memory means and said audio information producing means, comprising: (a) first means for commanding said device to operate in a live mode by connecting said at least first and second electrical activity signals which are currently being produced by said amplifying means to said audio information producing means as said input signals thereto so that said audio information producing means produces audio signals indicative of said at least first and second electrical activity signals simultaneously for transmission over said telephone lines; (b) second means for commanding said memory means to record information indicative of said at least first and second electrical activity signals; (c) play back command means for selectively commanding said memory means to play back to stored information thereof in the form of input signals to said audio information producing means, so that said audio information producing means produces audio signals indicative of said played back stored information; (d) timer means for initiating a timing sequence upon completion of said play back, and continuing said timing as long as another command from said play back command means is not initiated; and (e) erase-after-play means, coupled to said timer means, for producing a signal commanding erasure of said memory means after said timer reaches a predetermined value.

Claim 27

A device as in claim 24 wherein said first means is coupled to the output of said amplifying means and to said audio information producing means and is operable in response to a command signal to command said device to operate in said live mode.

Claim 28

A device as in claim 24 wherein said second means commands said memory means into a rolling mode where information is continually being stored in said memory means, new information erasing previous information stored during a previous time interval, and further comprising: (c) third means for commanding said memory means into a time interval mode to store information indicative of said at least first and second electrical activity signals for a time interval.

Claim 29

A device as in claim 24 further comprising (d) fourth means for commanding said audio information producing means to be on or off during commanding by said third means.

Claim 30

A portable measuring device for measuring electrical activity of a heart of a user comprising: connector means for receiving signals indicative of at least two leads of electrical activity of the heart of the user; means for amplifying said signals to produce at least first and second electrical activity signals from said signals indicative of at least two leads of electrical activity; memory means, coupled to said amplifying means to receive said at least first and second electrical activity signals at an input thereof, for storing information indicative of said at least first and second electrical activity signals; audio information producing means for selectively producing audio signals of a form suitable for transmission over telephone lines in response to input signals to be transmitted; and control means for controlling operation of said device, coupled to said memory means and said audio information producing means, comprising: (a) first means for commanding said device to operate in a live mode by connecting said at least first and second electrical activity signals which are currently being produced by said amplifying means to said audio information producing means as said input signals thereto, so that said audio information producing means produces audio signals indicative of said at least first and second electrical activity signals simultaneously for transmission over said telephone lines; (b) second means for commanding said memory means into a recording mode to record information indicative of said at least first and second electrical activity signals; (c) third means for commanding said audio information producing means to be on or off during said recording mode; and (d) playback command means operating at least in a simultaneous mode for commanding said memory means to play back the stored information thereof in the form of input signals to said audio information producing means such that said audio information producing means produces audio signals indicative of said at least first and second electrical activity signals simultaneously for transmission over said telephone lines.

Claim 31

A portable measuring device for measuring electrical activity of a heart of a user comprising: connector means for receiving signals indicative of at least two leads of electrical activity of the heart of the user; means for amplifying said signals to produce at least first and second electrical activity signals from said signals indicative of at least two leads of electrical activity; memory means, coupled to said amplifying means to receive said at least first and second electrical activity signals at an input thereof, for storing information indicative of said at least first and second electrical activity signals; audio information producing means for selectively producing audio signals of a form suitable for transmission over telephone lines in response to input signals to be transmitted; and control means for controlling operation of said device, coupled to said memory means and said audio information producing means, comprising: (a) first means for commanding said device to operate in a live mode by connecting said at least first and second electrical activity signals which are currently being produced by said amplifying means to said audio information producing means as said input signals thereto, so that said audio information producing means produces audio signals indicative of said at least first and second electrical activity signals simultaneously for transmission over said telephone lines; (b) second means for commanding said memory means into a recording mode to record information indicative of said at least first and second electrical activity signals; (c) third means for commanding said audio information producing means to be on or off during said recording mode; and (d) playback command means operating at least in a simultaneous mode for commanding said memory means to play back the stored information thereof in the form of input signals to said audio information producing means such that said audio information producing means produces audio signals indicative of said at least first and second electrical activity signals simultaneously for transmission over said telephone lines.