公开(公告)号：SE9902339D0

公开(公告)日：1999-06-21

申请号：SE9902339

申请日：1999-06-21

Applicant: ERICSSON TELEFON AB L M

Inventor： LINDGREN ULF ,  BJOERK CHRISTIAN

IPC: H04M1/00 ,  H04M1/02 ,  H04M1/725 ,  H04M

Abstract: An electronic device (1), e.g. a mobile telephone having a front cover (6) and a capacitive proximity sensor, comprising: a first electrode (9; 27) and a second electrode (8; 21, 20), said first electrode having a large face (11, 12, 13; 29); and detector means connected to the first electrode (9, 27) and the second electrode (8, 21, 20) for detecting the capacitance of the first electrode relatively to the second electrode and for providing a control signal (Vprox) responsive to the capacitance. The large face (11, 12, 13; 29) of the first electrode is inclined relative to the front cover (6).

公开(公告)号：EE200000233A

公开(公告)日：2001-06-15

申请号：EEP200000233

申请日：1998-11-10

Applicant: ERICSSON TELEFON AB L M

Inventor： GAERDENF KARL HAAKAN TORBJOERN ,  MARHOLEV BOJKO FREDERIK ,  BJOERK CHRISTIAN ,  LANTZ MARTIN

IPC: H03B1/00 ,  H03B5/12

Abstract: A monolithic high frequency voltage controlled oscillator trimming circuit includes a plurality of capacitance loops selectively connected between a first and second differential input of a voltage oscillator active network. A plurality of diodes, connected in series with the respective plurality of capacitance loops, selectively connect respective capacitance loops between the first and second differential input when forward biased. In a similar fashion, the plurality of diodes selectively disconnect the respective capacitance loops from the first and second differential input when reverse biased. A controller applies a forward biasing voltage to the diode of the selected capacitance loop to connect the capacitance loop to the active network of the voltage controlled oscillator and applies a reverse biasing voltage to the diode of the selected capacitance loop to disconnect the capacitance loop from the active network. The diodes used in the capacitance loops form a switch operable at high frequencies and are formed from a bipolar complementary metal oxide semiconductor electro-static discharge protection diode.

公开(公告)号：SE514945C2

公开(公告)日：2001-05-21

申请号：SE9902340

申请日：1999-06-21

Applicant: ERICSSON TELEFON AB L M

Inventor： LINDGREN ULF ,  BJOERK CHRISTIAN

IPC: H04M1/725 ,  H03K17/945 ,  H04M1/00

Abstract: The invention relates to an apparatus and a method for detecting the proximity of an object to an electronic device by means of light, using fewer components than the prior art. The problem is solved in a simple way by using the light (5) from the display (2) of an electronic device (1) to illuminate possible objects (8) in its vicinity and to detect the presence or absence of objects (8) by a light sensitive detector (6) located in the device near the display (2). The invention may be used to control functions such as loudspeaker volume, display illumination, etc. of electronic devices such as mobile telephones, laptop computers, portable music playing devices, etc.

公开(公告)号：SE9902362L

公开(公告)日：2001-02-21

申请号：SE9902362

申请日：1999-06-21

Applicant: ERICSSON TELEFON AB L M

Inventor： LINDGREN ULF ,  BJOERK CHRISTIAN

IPC: H04M1/02 ,  H04M1/725 ,  H04M1/00

Abstract: An electronic communications device having a proximity sensor comprising: communication means (7) and a proximity sensor adapted to provide a control signal (Y2; Y3; Y4) indicative of whether an object (8) is in proximity of the device. The device is characterized by having a proximity sensor coil (L1; L2; L3; L5; L6; LP; LL) with an impedance, and oscillation means (C1, C2, 302; 601; 804) coupled to the proximity sensor coil (L1; L2; L3; L5; L6; LP; LL) to provide the control signal (Y2; Y3; Y4) in response to the impedance.In a preferred embodiment the proximity sensor coil is a loudspeaker coil. The invention also relates to a method of detecting proximity of an object relative to a loudspeaker (11; 703; 803) with a loudspeaker coil (L5; L6) which has an impedance.

公开(公告)号：SE9902341L

公开(公告)日：2001-02-21

申请号：SE9902341

申请日：1999-06-21

Applicant: ERICSSON TELEFON AB L M

Inventor： LINDGREN ULF ,  BJOERK CHRISTIAN

IPC: H04M1/725 ,  H04M1/00

公开(公告)号：SE9902339L

公开(公告)日：2001-02-20

申请号：SE9902339

申请日：1999-06-21

Applicant: ERICSSON TELEFON AB L M

Inventor： LINDGREN ULF ,  BJOERK CHRISTIAN

IPC: H04M1/00 ,  H04M1/02 ,  H04M1/725

Abstract: An electronic device (1), e.g. a mobile telephone having a front cover (6) and a capacitive proximity sensor, comprising: a first electrode (9; 27) and a second electrode (8; 21, 20), said first electrode having a large face (11, 12, 13; 29); and detector means connected to the first electrode (9, 27) and the second electrode (8, 21, 20) for detecting the capacitance of the first electrode relatively to the second electrode and for providing a control signal (Vprox) responsive to the capacitance. The large face (11, 12, 13; 29) of the first electrode is inclined relative to the front cover (6).

公开(公告)号：NO20002264D0

公开(公告)日：2000-04-28

申请号：NO20002264

申请日：2000-04-28

Applicant: ERICSSON TELEFON AB L M

Inventor： BJOERK CHRISTIAN ,  LANTZ MARTIN ,  GORDENFORS TORBJOERN ,  MARHOLEV BOJKO

IPC: H03B5/12 ,  H03B1/00 ,  H03B

Abstract: A monolithic high frequency voltage controlled oscillator trimming circuit includes a plurality of capacitance loops selectively connected between a first and second differential input of a voltage oscillator active network. A plurality of diodes, connected in series with the respective plurality of capacitance loops, selectively connect respective capacitance loops between the first and second differential input when forward biased. In a similar fashion, the plurality of diodes selectively disconnect the respective capacitance loops from the first and second differential input when reverse biased. A controller applies a forward biasing voltage to the diode of the selected capacitance loop to connect the capacitance loop to the active network of the voltage controlled oscillator and applies a reverse biasing voltage to the diode of the selected capacitance loop to disconnect the capacitance loop from the active network. The diodes used in the capacitance loops form a switch operable at high frequencies and are formed from a bipolar complementary metal oxide semiconductor electro-static discharge protection diode.