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公开(公告)号：JP2010081601A
公开(公告)日：2010-04-08
申请号：JP2009211707
申请日：2009-09-14
Applicant: Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
Inventor： KERR RICHARD J , CLAXTON DANIEL D
CPC classification number: H03M1/002 , H01H2300/022 , H03M1/187 , H03M1/361 , H03M11/24
Abstract: PROBLEM TO BE SOLVED: To differentiate between input ranges in a passive keypad.
SOLUTION: There are disclosed a method and circuit for processing switch closures in a passive network 100 having switches S1, ..., Sn. The passive network 100 generates an output voltage in response to a switch closure. The circuit includes a comparison circuit 206, coupled to the passive network, for comparing the output voltage to a reference voltage. A decoder 212, coupled to the comparison circuit, decodes the switch closure if the output voltage is within a predetermined range, and does not decode the switch closure if the output voltage is not within the predetermined range. The circuit differentiates between input ranges in a passive network keypad which allows the proper processing of meaningful key presses, while ignoring inadvertent or superfluous key presses, thereby conserving power and processor time.
COPYRIGHT: (C)2010,JPO&INPITAbstract translation: 要解决的问题：区分无源键盘中的输入范围。 解决方案：公开了一种用于处理具有开关S1，...，Sn的无源网络100中的开关闭合的方法和电路。 无源网络100响应于开关闭合而产生输出电压。 电路包括耦合到无源网络的比较电路206，用于将输出电压与参考电压进行比较。 如果输出电压在预定范围内，则耦合到比较电路的解码器212对开关闭合进行解码，如果输出电压不在预定范围内，解码器212不解码开关闭合。 电路区分无源网络键盘中的输入范围，允许正确处理有意义的按键，同时忽略无意或多余的按键，从而节省电源和处理器时间。 版权所有（C）2010，JPO＆INPIT
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公开(公告)号：CA2371097A1
公开(公告)日：2000-11-16
申请号：CA2371097
申请日：2000-05-05
Applicant: QUALCOMM INC
Inventor： CLAXTON DANIEL D , KERR RICHARD , VIJ GAJINDER
Abstract: A detection circuit that detects the open and close state of a flip cover of a communications device. The detection circuit includes a resistive network an d an analog-to-digital converter (ADC). When the flip cover is in the closed position, the circuit detects a unique resistive value through a set of contacts. This voltage level is converted from an analog signal to a digital signal via the ADC for input into a microprocessor. When the flip cover is i n the open position, the contacts are broken, thus, disabling the detection of the unique resistive value. The resulting voltage level is converted from an analog signal to a digital signal via the AD for input into a microprocessor . Software, programmed within the microprocessor, enables the communications device to operate in the appropriate mode according to the detection of the open/close state of the flip cover.
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公开(公告)号：AU1620900A
公开(公告)日：2000-06-05
申请号：AU1620900
申请日：1999-11-12
Applicant: QUALCOMM INC
Inventor： CLAXTON DANIEL D
Abstract: A method and apparatus for calibrating a resistive ladder switching matrix coupled to a keypad in a portable electronic device having a housing with a cover that may be positioned in an open state or a closed state. A first contact of a calibration element is coupled to a reference voltage and a second contact of the calibration element is coupled to ground by moving the cover from the open state to the closed state. When the first contact of the calibration element is coupled to the reference voltage and the second contact of the calibration element is coupled to ground, a calibration resistance across the calibration element is determined. The calibration resistance may correspond to an input impedance of the resistive ladder switching matrix when no buttons associated with the keypad are depressed. Signals from the resistive ladder switching network are calibrated when the cover is in the closed state in accordance with the calibration resistance.
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公开(公告)号：AU767291B2
公开(公告)日：2003-11-06
申请号：AU1620900
申请日：1999-11-12
Applicant: QUALCOMM INC
Inventor： CLAXTON DANIEL D
Abstract: A method and apparatus for calibrating a resistive ladder switching matrix coupled to a keypad in a portable electronic device having a housing with a cover that may be positioned in an open state or a closed state. A first contact of a calibration element is coupled to a reference voltage and a second contact of the calibration element is coupled to ground by moving the cover from the open state to the closed state. When the first contact of the calibration element is coupled to the reference voltage and the second contact of the calibration element is coupled to ground, a calibration resistance across the calibration element is determined. The calibration resistance may correspond to an input impedance of the resistive ladder switching matrix when no buttons associated with the keypad are depressed. Signals from the resistive ladder switching network are calibrated when the cover is in the closed state in accordance with the calibration resistance.
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公开(公告)号：AU766840B2
公开(公告)日：2003-10-23
申请号：AU4701400
申请日：2000-05-05
Applicant: QUALCOMM INC
Inventor： CLAXTON DANIEL D
Abstract: A flip cover and hinge operate as a rotary switch to select the mode of operation of a communications device. Multiple contacts are located on the sides of the inner surface of the flip cover and a single contact is located on each side of the body of the communications device. Each contact located on the sides of the inner surface of the flip cover represents a different mode of operation for the communications device. As the flip cover rotates from a closure position to its final position as a stand, the mode of operation of the communications device changes as the contact from the body of the communications device connects with one of the contacts on the flip cover. Three modes of operation are presently implemented: the KEYPAD mode, the SMARTPHONE mode, and the SPEAKERPHONE mode.
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Patent Agency Ranking
公开(公告)号：HK1047509A1
公开(公告)日：2003-02-21
申请号：HK02109058
申请日：2002-12-13
Applicant: QUALCOMM INC
Inventor： CLAXTON DANIEL D , KERR RICHARD , VIJ GAJINDER
Abstract: A detection circuit that detects the open and close state of a flip cover of a communications device. The detection circuit includes a resistive network and an analog-to-digital converter (ADC). When the flip cover is in the closed position, the circuit detects a unique resistive value through a set of contacts. This voltage level is converted from an analog signal to a digital signal via the ADC for input into a microprocessor. When the flip cover is in the open position, the contacts are broken, thus, disabling the detection of the unique resistive value. The resulting voltage level is converted from an analog signal to a digital signal via the ADC for input into a microprocessor. Software, programmed within the microprocessor, enables the communications device to operate in the appropriate mode according to the detection of the open/close state of the flip cover.
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公开(公告)号：BR0011307A
公开(公告)日：2002-04-30
申请号：BR0011307
申请日：2000-05-05
Applicant: QUALCOMM INC
Inventor： CLAXTON DANIEL D , KERR RICHARD , VIJ GAJINDER
Abstract: A detection circuit that detects the open and close state of a flip cover of a communications device. The detection circuit includes a resistive network and an analog-to-digital converter (ADC). When the flip cover is in the closed position, the circuit detects a unique resistive value through a set of contacts. This voltage level is converted from an analog signal to a digital signal via the ADC for input into a microprocessor. When the flip cover is in the open position, the contacts are broken, thus, disabling the detection of the unique resistive value. The resulting voltage level is converted from an analog signal to a digital signal via the ADC for input into a microprocessor. Software, programmed within the microprocessor, enables the communications device to operate in the appropriate mode according to the detection of the open/close state of the flip cover.
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公开(公告)号：AU4820900A
公开(公告)日：2000-11-21
申请号：AU4820900
申请日：2000-05-05
Applicant: QUALCOMM INC
Inventor： CLAXTON DANIEL D , KERR RICHARD J
Abstract: A communications device that operates as a combination flip telephone and personal digital assistant (PDA). The opening and closing of the flip cover activates a switch that changes the operating mode of the communications device. The communications device operates as a combination wireless telephone and personal digital assistant (PDA) when the flip cover is open. This is called the SMARTPHONE mode of operation. When the flip cover is closed, the communications device operates as a standard wireless telephone. This is known as the KEYPAD mode of operation.
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公开(公告)号：CA2350579A1
公开(公告)日：2000-05-25
申请号：CA2350579
申请日：1999-11-12
Applicant: QUALCOMM INC
Inventor： CLAXTON DANIEL D
Abstract: A method and apparatus for calibrating a resistive ladder switching matrix (110) coupled to a keypad in a portable electronic device having a housing with a cover (120) that may be positioned in an open state or a closed state . A first contact (140) of a calibration element (115) is coupled to a referen ce voltage VREF and a second contact (142) of the calibration element is couple d to ground by moving the cover (120) from the open state to the closed state. When the first contact (140) of the calibration element is coupled to the reference voltage and the second contact (142) of the calibration element is coupled to ground, a calibration resistance across the calibration element (115) is determined. The calibration resistance may correspond to an input impedance of the resistive ladder switching matrix (110) when no buttons associated with the keypad are depressed. Signals from the resistive ladder switching network (110) are calibrated when the cover is in the closed state in accordance with the calibration resistance.
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公开(公告)号：CA2371118C
公开(公告)日：2009-02-10
申请号：CA2371118
申请日：2000-05-05
Applicant: QUALCOMM INC
Inventor： CLAXTON DANIEL D
Abstract: A flip cover and hinge operate as a rotary switch to select the mode of operation of a communications device. Multiple contacts are located on the sides of the inner surface of the flip cover and a single contact is located on each side of the body of the communications device. Each contact located on the sides of the inner surface of the flip cover represents a different mode of operation for the communications device. As the flip cover rotates from a closure position to its final position as a stand, the mode of operation of the communications device changes as the contact from the body of the communications device connects with one of the contacts on the flip cover. Three modes of operation are presently implemented: the KEYPAD mode, the SMARTPHONE mode, a nd the SPEAKERPHONE mode.
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