The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2019
Filed:
Nov. 21, 2014
Koninklijke Philips N.v., Eindhoven, NL;
Schelte Heeringa, Eindhoven, NL;
Roelof Jan Wind, Eindhoven, NL;
Frans Wiebe Rozeboom, Eindhoven, NL;
Jacob Hendrik Botma, Eindhoven, NL;
Hielke Simon Van Oostrum, Eindhoven, NL;
Michiel Allan Aurelius Schallig, Eindhoven, NL;
Robert Godlieb, Eindhoven, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
A tap sensitive alarm clock has a housing (), a vibration sensor () mechanically coupled to the housing for receiving a shock due to a user tapping the housing, and a control circuit () coupled to the vibration sensor for controlling a function of the alarm clock. An audio unit () is coupled to an audio circuit () for generating sound, e.g. a loudspeaker in an alarm clock or a wake up light. To avoid interference of the sound and the vibration sensor, the alarm clock is provided with a filter () coupled to the vibration sensor and the control circuit. The filter has a filter curve matched to block frequencies occurring in the sound. Advantageously it is avoided that the sound frequencies trigger the function, while the sensor is sensitive to other frequencies up to the frequency range of the sound for reliably detecting the tapping.