Data filtering method and electronic device using the same

• US 9,189,102 B2
• Filed: 12/09/2008
• Issued: 11/17/2015
• Est. Priority Date: 05/16/2008
• Status: Expired due to Fees

• Current Assignee: Wi-LAN Inc.
• Original Assignee: 8631654 Canada Incorporated (Quarterhill Inc. (f/k/a Wi-LAN Inc.))
• Inventors: Chen, Hsi-Kun
• Primary Examiner(s): Eisen, Alexander
• Assistant Examiner(s): LAM, NELSON C
• Application Number:
  US12/330,551
• Publication Number:
  US 20090283338A1
• Time in Patent Office: 2,534 Days
• Field of Search: 345156-179, 702189-199
• US Class Current: 1/1
• CPC Class Codes: G06F 17/15 Correlation function computation including computation of convolution operations arithmetic circuits for sum of products per se, e.g. multiply-accumulators G06F7/5443; digital filters, e.g. FIR, IIR, adaptive filters H03H17/00
• CPC Class Codes: G06F 3/04182 Filtering of noise external to the device and not generated by digitiser components

Abstract

A data filtering method includes the following steps. First, m pieces of data are identified at first to m^th time points of a plurality of time points, wherein a datum is not identified at an (m 1)^th time point of the time points, and m is a positive integer Then, the identified m pieces of data are removed.

Claims

1. A data filtering method for filtering data generated by a sensing unit of an electronic device, the method comprising the steps of:

(a) identifying m pieces of data by continuously acquiring, by an acquiring unit of the electronic device, the m pieces of data at first to m^th time points, and failing in identifying an (m

     1)th datum at an (m

     1)th time point, wherein m is a positive integer;

(b) judging, by a judging unit of the electronic device, whether or not m is smaller than a predetermined value n, wherein n is a positive integer greater than 1;

(c) outputting, by a filtering unit of the electronic device, the identified m pieces of data if m is not smaller than the predetermined value n, and removing the identified m pieces of data at the first to the m^th time points if m is smaller than the predetermined value n.

2. The method according to claim 1, wherein the first to (m 1)^th time points have equal period of time between two adjacent time points.

3. An electronic device, comprising:

a sensing unit for generating a plurality of data;

an acquiring unit for identifying m pieces of data by continuously acquiring the m pieces of data among the plurality of data from the sensing unit at first to m^th time points, and failing in identifying an (m

     1)th datum at an (m

     1)th time point, wherein m is a positive integer;

a judging unit, for judging whether or not m is smaller than a predetermined value n, wherein n is a positive integer greater than 1; and

a filtering unit, for outputting the identified m pieces of data if m is not smaller than the predetermined value n;

wherein, the filtering unit removes a first piece of datum among the identified m pieces of data if m is smaller than the predetermined value n.

4. The device according to claim 3, wherein the first to (m 1)^th time points have equal period of time between two adjacent time points.

5. The device according to claim 3, wherein the sensing unit comprises a sensing wheel.