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:
May. 27, 2014
Filed:
Dec. 09, 2008
James East, Northants, GB;
Chris Cowdery, Cambourne, GB;
Martin Colloms, London, GB;
Neil Harris, Cambridge, GB;
Geoffrey A. Boyd, San Jose, CA (US);
Timothy Christopher Johnson Whitwell, Hong Kong, HK;
James East, Northants, GB;
Chris Cowdery, Cambourne, GB;
Martin Colloms, London, GB;
Neil Harris, Cambridge, GB;
Geoffrey A. Boyd, San Jose, CA (US);
Timothy Christopher Johnson Whitwell, Hong Kong, HK;
New Transducers Limited, Cambourne, Cambridgeshire, GB;
Abstract
A user/machine interface comprising a panel having a surface, the panel being capable of supporting bending waves, a touch-sensitive input device associated with the surface, and means including a force transducer for providing force feedback to the input device. The force is in the form of pulses to the panel, the pulses being in the form of a modulated signal shaped as a damped sinusoid whereby a button click sensation is provided to the user's finger tip. The modulated signal may be produced by a narrow-band sine wave having a carrier frequency in the range 150 to 750 Hz and being of a duration of at least 10 ms.