US5284152A
Expired / Lapsed
US
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Method for displaying superimposed heartbeat waveforms
Assignee: Koninklijke Philips NV
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Filing: 1992-02-28
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Granted: 1994-02-08
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Expires: 2012-02-28
Abstract
Abstract A computer controls a video display having a display screen for displaying ECG heartbeats superimposed over one another. The ECG data is collected during Holter monitoring and stored in a memory. A plurality of successive heartbeats are written to the display with their R-waves aligned. As the next new heartbeat in chronological order is displayed the longest-displayed heartbeat is removed. The total number of heartbeats displayed therefore remains constant. The user can select the total number of heartbeats, between one and five, to be displayed at one time. In one mode, a heartbeat is added, and removed, during each screen refresh cycle. In another mode, the user can step the display in either reverse or forward chronological order one step at a time.
Inventors
- 👤 Colin M. Portnuff
- 👤 Matthew S. Glei
- 👤 Rommel R. Raj
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:51
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/316; A61B5/318; A61B5/339; G; G16; G16H; G16H40/00; G16H40/60; G16H40/63
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
82 words
A method for displaying superimposed heartbeat waveforms contained in stored ECG data comprising the steps of: defining a data window having a length substantially equal to a predetermined number of successive heartbeats contained in the stored ECG data; advancing the window across the data in one heartbeat increments so that each window position contains the predetermined number of heartbeats; displaying the heartbeats contained in the window superimposed over one another; and varying the predetermined number of successive heartbeats contained in the window.
Claim 2
Independent Claim
82 words
A method for displaying superimposed heartbeat waveforms contained in stored ECG data comprising the steps of: defining a data window having a length substantially equal to a predetermined number of successive heartbeats contained in the stored ECG data; advancing the window across the data in one heartbeat increments so that each window position contains the predetermined number of heartbeats; displaying the heartbeats contained in the window superimposed over one another; and varying the predetermined number of successive heartbeats contained in the window.
Claim 3
Dependent Claim
47 words
The method of claim 1 wherein the step of advancing the window across the data in one heartbeat increments so that each window position contains the predetermined number of heartbeats further comprises the step of automatically advancing the window upon each occurrence of a predetermined time interval.
Claim 4
Dependent Claim
37 words
The method of claim 2 wherein said heartbeats are displayed on a display screen and wherein the step of displaying the heartbeats contained in the window comprises the step of writing the heartbeats to a display screen.
Claim 5
Dependent Claim
32 words
The method of claim 1 wherein the step of advancing the window across the data in one heartbeat increments further comprises the step of advancing the window responsive to an operator signal.
Claim 6
Dependent Claim
48 words
The method of claim 1 wherein the heartbeat waveforms contained in the stored ECG data are stored in chronological order and wherein the step of advancing the window across the data in one heartbeat increments comprises the step of advancing the window in the direction of increasing time.
Claim 7
Dependent Claim
48 words
The method of claim 1 wherein the heartbeat waveforms contained in the stored ECG data are stored in chronological order and wherein the step of advancing the window across the data in one heartbeat increments comprises the step of advancing the window in the direction of decreasing time.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-07 | 1997-08-09 | 1998-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-07 | 2001-08-09 | 2002-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-07 | 2005-08-09 | 2006-02-08 | $7700.00 | Window Closed / Lapsed |