US 12,268,520 B2
Apparatus, methods and computer programs for monitoring a user's pulse
Zoran Radivojevic, Cambridge (GB)
Assigned to Nokia Technologies Oy, Espoo (FI)
Appl. No. 16/623,745
Filed by Nokia Technologies Oy, Espoo (FI)
PCT Filed May 29, 2018, PCT No. PCT/EP2018/063975
§ 371(c)(1), (2) Date Dec. 17, 2019,
PCT Pub. No. WO2019/001874, PCT Pub. Date Jan. 3, 2019.
Claims priority of application No. 17179215 (EP), filed on Jun. 30, 2017.
Prior Publication US 2020/0170566 A1, Jun. 4, 2020
Int. Cl. A61B 5/02 (2006.01); A61B 5/00 (2006.01); A61B 5/024 (2006.01); A61B 7/04 (2006.01)
CPC A61B 5/486 (2013.01) [A61B 5/02438 (2013.01); A61B 5/02444 (2013.01); A61B 5/6824 (2013.01); A61B 5/7455 (2013.01); A61B 7/04 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An apparatus comprising:
at least one processor; and
at least one memory storing instructions, that when executed by the at least one processor, cause the apparatus to at least:
provide haptic feedback to a user indicative of a detected pulse;
during a first predetermined time period, detect the pulse of the user and during a second predetermined time period provide haptic feedback indicative of the detected pulse,
wherein the first predetermined time period is set longer than the second predetermined time period, and
wherein frequency and amplitude parameters of deformations of the haptic feedback are set to correspond to frequency and amplitude parameters of the pulse of the user detected in a time period immediately preceding a haptic feedback time period;
deform a portion of the haptic feedback so that the deformation can be perceived via a sense of touch of the user;
control an amplitude of the deformation using different amplitudes to cause user perception at different activity levels of the user and to cause a frequency of the deformation to be different than a frequency of the detected pulse of the user; and
based on the user perception at different activity levels of the user, use an acoustic cavity positioned adjacent to at least one piezoelectric transducer, wherein the at least one piezoelectric transducer is driven in opposing directions and configured with a first time period and second time period purpose to change a shape of the portion of the haptic feedback, wherein the first time period and the second time period purpose comprises that during the first time period the at least one piezoelectric transducer acts to detect the pulse of the user and during the second time period the at least one piezoelectric transducer acts to provide a haptic indication of the frequency of the pulse of the user.