公开(公告)号：WO2007017515A3

公开(公告)日：2007-02-15

申请号：PCT/EP2006/065163

申请日：2006-08-08

Applicant: STMICROELECTRONICS S.R.L. ,  FONTANELLA, Luca ,  PASOLINI, Fabio ,  VIGNA, Benedetto ,  CHIESA, Enrico

Inventor： FONTANELLA, Luca ,  PASOLINI, Fabio ,  VIGNA, Benedetto ,  CHIESA, Enrico

IPC: G06F3/043

Abstract: In a device (2) for determining the position (P 1 (X, y) ) of a touch on a contact surface (Ia) , a plurality of vibration sensors (4) are configured to detect mechanical vibrations (9) generated by the touch on the contact surface (1a) and to generate corresponding vibration signals, and a processing circuit (6) is connected to the vibration sensors (4) and is configured to determine the touch position (P 1 (x, y) ) via a time-of-f light algorithm, based on differences between times of detection (t 1 , t 2 , t 3 ) of the mechanical vibrations (9) by the vibration sensors (4) .

公开(公告)号：WO2006103246A1

公开(公告)日：2006-10-05

申请号：PCT/EP2006/061116

申请日：2006-03-28

Applicant: STMICROELECTRONICS S.R.L. ,  TRONCONI, Michele ,  CHIESA, Enrico ,  PASOLINI, Fabio

Inventor： TRONCONI, Michele ,  CHIESA, Enrico ,  PASOLINI, Fabio

IPC: H03H17/04

CPC classification number: H03H17/04 ,  G01P15/0891 ,  G01P15/18

Abstract: A digital high-pass filter (12) has an input (IN), an output (OUT), and a subtractor stage (20), having a first input terminal, a second input terminal and an output terminal. The first input terminal of the subtractor stage (20) is connected to the input (IN) of the digital high-pass filter (12) and the output terminal is connected to the output (OUT) of the digital high-pass filter (12). A recursive circuit branch (21) is connected between the output (OUT) of the digital high-pass filter (12) and the second input terminal of the subtractor stage (20). Within the recursive circuit branch (21) are cascaded an accumulation stage (23), constituted by an integrator circuit, and a divider stage (24). The cutoff frequency (f t ) of the digital high-pass filter (12) is variable according to a dividing factor (den) of the divider stage (24).

Abstract translation: 数字高通滤波器（12）具有输入（IN），输出（OUT）和减法器级（20），具有第一输入端，第二输入端和输出端。 减法器级（20）的第一输入端连接到数字高通滤波器（12）的输入（IN），输出端连接到数字高通滤波器（12）的输出端 ）。 递归电路分支（21）连接在数字高通滤波器（12）的输出（OUT）和减法器级（20）的第二输入端之间。 在递归电路分支（21）内，级联由积分器电路和分频器级（24）构成的累加级（23）。 数字高通滤波器（12）的截止频率（f ）根据分频器级（24）的分频因子（den）而变化。

公开(公告)号：EP1913462A2

公开(公告)日：2008-04-23

申请号：EP06792740.0

申请日：2006-08-08

Applicant: STMicroelectronics S.r.l.

Inventor： FONTANELLA, Luca ,  PASOLINI, Fabio ,  VIGNA, Benedetto ,  CHIESA, Enrico

IPC: G06F3/043

CPC classification number: G06F3/0433

Abstract: In a device (2) for determining the position (P1(x, y) ) of a touch on a contact surface (1a), a plurality of vibration sensors (4) are configured to detect mechanical vibrations (9) generated by the touch on the contact surface (1a) and to generate corresponding vibration signals, and a processing circuit (6) is connected to the vibration sensors (4) and is configured to determine the touch position (P1 (x, y) ) via a time-of-f light algorithm, based on differences between times of detection (t1, t2, t3) of the mechanical vibrations (9) by the vibration sensors (4).