Alarm clock system, method of operation and program product therefor

• US 6,928,031 B1
• Filed: 04/24/2000
• Issued: 08/09/2005
• Est. Priority Date: 04/24/2000
• Status: Expired due to Term

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Zadrozny, Wlodek, Kanevsky, Dimitri
• Primary Examiner(s): Cuneo, Kamand
• Assistant Examiner(s): GOODWIN, JEANNE M
• Application Number:
  US09/557,119
• Time in Patent Office: 1,933 Days
• Field of Search: 368/9, 368/10, 368/12, 368/244, 368/250, 368/251, 600/483, 600/484, 600/534, 600/552, 600/544, 600/26, 600513-514, 600/545, 600/300, 340/575, 340/576
• US Class Current: 368/12
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/4812 Detecting sleep stages or cycles
• CPC Class Codes: G16H 20/70 relating to mental therapies, e.g. psychological therapy or autogenous training
• CPC Class Codes: G16H 40/67 for remote operation

Abstract

A programmable alarm clock system, method of operation and program product therefor with sleep analysis to identify and wake a person during non-REM sleep patterns, resulting in less subsequent drowsiness and better day-to-day functioning. The programmable alarm clock system includes at least one brain activity sensor attachable to a head of a sleeper. Brain activity signals from the sensor(s) are sent to a receiver at a local computer. The user, before retiring inputs a wake up time and attaches the sensor(s). The local computer sends brain activity signals to a remotely connected sleep analyzing server which analyzes the brain activity and identifies REM sleep periods and non-REM sleep periods. The labeled brain activity periods are returned to the local computer which waits for the wake up time. Then, the local computer sets an alarm time by adjusting the wake up time to coincide with a non-REM sleep period, if necessary and if possible. At the alarm time, the local computer sends a trigger to a remotely triggered local alarm device such as a clock, which sounds an alarm to wake the user/sleeper.

Claims

1. A programmable alarm clock system for waking a sleeper during a selected period of sleep, said programmable alarm clock system comprising:

a sleep analyzing server;

at least one sleep activity sensor attachable to a head of a sleeper;

a receiver receiving sleep activity signals from at least one said sleep activity sensor;

a local computer receiving a wake up time and received said sleep activity signals and sending said received sleep activity signals remotely to said sleep analyzing server; and

a remotely triggered local alarm device sounding a wake up alarm responsive to a determination from said local computer that said sleeper should be awoken.

2. A programmable alarm clock system as in claim 1, wherein said sleep activity is brain activity and said sleep analyzing server analyzes received brain activity signals and identifies periods of slow wave sleep.

3. A programmable alarm clock system as in claim 1, wherein said sleep activity is brain activity and said sleep analyzing server analyzes received brain activity signals and identifies periods of REM sleep and non-REM sleep.

4. A programmable alarm clock system as in claim 1, wherein said at least one sensor measures brain activity using electroencephelography.

5. A programmable alarm clock system as in claim 1, wherein said at least one sensor measures brain activity using polysomnography.

6. A programmable alarm clock system as in claim 1, wherein said at least one sensor is a plurality of sensors measuring brain activity and in wireless communication with said local computer.

7. A programmable alarm clock system as in claim 6, wherein the server comprises:

a receiving module receiving sleep activity;

a signal analyzer charting sleep data and identifying sleep periods as being either selected activity sleep periods or other activity sleep periods;

a signal labeler labeling selected activity sleep periods and other activity sleep periods; and

a sender sending labeled said charts to the local computer.

8. A programmable alarm clock system as in claim 7, further comprising:

a signal processing unit receiving analog signals representative of said sleep activity and providing digital sleep data to the signal analyzer responsive to said analog signals.

9. A programmable alarm clock system as in claim 8, further comprising:

one or more sleep activity sensors attached to the head of said sleeper, each of said one or more sensors sending sleep activity signals to said receiving module.

10. A programmable alarm clock system as in claim 9, wherein at least one of said one or more sleep activity sensors is sensing brain activity.

11. A programmable alarm clock system as in claim 10, wherein the signal analyzer identifies sleep periods based upon selected brain activity prototypes.

12. A programmable alarm clock system as in claim 9, wherein at least one of said one or more sense activity sensors senses eye movement.

13. A programmable alarm clock system as in claim 1, wherein said at least one sleep activity sensor is one or more eyelid sensors are attached to said sleeper'"'"'s eyelids measuring said eye movement, said receiver receiving sensor signals from said eyelid sensors.

14. A programmable alarm clock system as in claim 1, wherein said local computer is further provided with a selected sleep activity, the sleep analyzing server sending information about identified periods of said selected sleep activity to said local computer and said local computer determines from received said information when to trigger said wake up alarm relative to said wake up time.

15. A programmable alarm clock system as in claim 14, wherein when said local computer determines that said sleeper is in an identified period of said selected sleep activity at said wake up time, said local computer triggers said wake up alarm.

16. A programmable alarm clock system as in claim 15, wherein when said local computer determines that said sleeper is in an other sleep activity period identified as having a sleep activity other than said selected sleep activity at said wake up time, said local computer triggers said wake up alarm at an end to said other sleep activity period.

17. A programmable alarm clock system as in claim 16, wherein when said local computer determines that said sleeper is in an other sleep activity period identified as having a sleep activity other than said selected sleep activity at said wake up time, if said local computer determines that the next selected sleep activity period is expected to occur beyond a selected margin, said local computer triggers said wake up alarm.

18. A programmable alarm clock system as in claim 15, wherein when said local computer determines that said sleeper is in an other sleep activity period identified as having a sleep activity other than said selected sleep activity at said wake up time, said local computer postpones triggering said alarm until a next selected sleep period.

19. A programmable alarm clock system as in claim 14, wherein said selected sleep activity is REM sleep.

20. A programmable alarm clock system as in claim 14, wherein said selected sleep activity is non-REM sleep.

21. A method of operating a programmable alarm clock, said method comprising the steps of:

a) receiving brain activity signals and sending the brain activity signals to a remotely connected server,

b) digitizing said brain activity signals;

c) analyzing said digitized brain activity signals to identify selected sleep activity periods and other sleep activity periods;

d) waiting for a designated wake up time;

e) determining whether said brain activity signals indicate that a sleeper is in a period of said selected sleep activity or a period of other sleep activity at said designated wake up time; and

f) sounding an alarm at said designated wake up time if said brain activity signals indicate said selected sleep activity.

22. A method of operating a programmable alarm clock as in claim 21, when said brain-activity signals indicate said other sleep activity period at said wake up time, said method further comprising the steps of:

g) determining an alarm time to sound said alarm; and

h) sounding said alarm at said alarm time.

23. A method of operating a programmable alarm clock as in claim 22, wherein the determining step (g) comprises the steps of:

i) determining whether a wait margin has been selected, the alarm time being set to said designated wake up time when no wait margin has been selected;

ii) setting the alarm time when said next expected selected sleep activity period is within the wait margin; and

iii) if said other sleep activity continues beyond said wait margin, setting said alarm at the end of said wait margin.

24. A method of operating a programmable alarm clock as in claim 23, wherein the analyzing step (c) comprises the steps of:

i) creating a prototype chart of said digitized brain activity signals; and

ii) labeling periods in said prototype chart as being selected sleep activity periods and other sleep activity periods.

25. A method of operating a programmable alarm clock as in claim 24, wherein said prototype chart is sent to a local computer.

26. A method of operating a programmable alarm clock as in claim 25, wherein in the step (e) of determining whether sleep activity signals indicate that the sleeper is in the selected sleep activity period, said local computer interrogates the labeled prototype chart, determining therefrom whether the designated wake up time is in one of the selected sleep activity periods.

27. A method of operating a programmable alarm clock as in claim 26, wherein the local computer sends a trigger to an alarm clock in the steps (f) and (h) of sounding the alarm, the alarm clock sounding the alarm responsive to said trigger.

28. A method of operating a programmable alarm clock as in claim 27, wherein the selected sleep activity is non-REM sleep.

29. A method of operating a programmable alarm clock as in claim 27, wherein the selected sleep activity is REM sleep.

30. A method of operating a programmable alarm clock as in claim 27, wherein the selected sleep activity is slow wave sleep.

31. A computer program product for operating a programmable alarm clock system monitoring sleep activity and selecting a time to wake a monitored sleeper, said computer program product comprising a computer usable medium having computer readable program code thereon, said computer readable program code comprising:

computer readable program code means for digitizing sleep activity signals;

computer readable program code means for analyzing digitized said sleep activity signals to identify selected sleep periods and non-selected sleep periods;

computer readable program code means for determining whether to send a trigger responsive to a designated wake up time is in a selected sleep period or non-selected sleep period; and

computer readable program code means for sounding an alarm responsive to said trigger.

32. A computer program product for operating a programmable alarm clock system monitoring sleep activity and selecting a time to wake a monitored sleeper as in claim 31, wherein said computer readable program code means for determining an alarm time comprises:

computer readable program code means for determining whether a wait margin has been selected, a trigger time being set to said designated wake up time when no wait margin has been selected;

computer readable program code means for setting said trigger time as a next expected selected sleep activity period when said next expected selected sleep activity period is determined to be expected to occur within the wait margin; and

computer readable program code means for setting said trigger time at the end of said wait main, when a non-selected sleep activity period is expected to extend through said wait margin.

33. A computer program product for operating a programmable alarm clock system monitoring sleep activity and selecting a time to wake a monitored sleeper as in claim 32, further comprising:

computer readable program code means for forwarding received sleep activity signals to a remotely connected server.

34. A computer program product for operating a programmable alarm clock system monitoring sleep activity and selecting a time to wake a monitored sleeper as in claim 33, wherein the sleep activity signals are brain activity signals and said computer readable program code means for analyzing digitized brain activity comprises:

computer readable program code means for creating a prototype chart of said digitized brain activity signals;

computer readable program code means for labeling periods in said prototype chart as being selected sleep periods and non-selected periods; and

computer readable program code means for sending each labeled said prototype chart to a local computer.

35. A computer program product for operating a programmable alarm clock system monitoring sleep activity and selecting a time to wake a monitored sleeper as in claim 34, wherein said computer readable program code means for sounding said alarm comprises:

computer readable program code means for causing said local computer to send said trigger to a local alarm device.

36. A computer program product for operating a programmable alarm clock system as in claim 33, wherein said sleep activity signals are indicated by eye movement.

37. A computer program product for operating a programmable alarm clock system as in claim 36, wherein said selected sleep activity is REM sleep.

38. A computer program product for operating a programmable alarm clock system as in claim 36, wherein said selected sleep activity is non-REM sleep.

39. A computer program product for operating a programmable alarm clock system as in claim 36, wherein said selected sleep activity is slow wave sleep.