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17 records (took 0.023 seconds)

    1.
    发明专利
    未知

    公开(公告)号：SE9902340L

    公开(公告)日：2000-12-22

    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.

    2.
    发明专利
    未知

    公开(公告)号：BR9814969A

    公开(公告)日：2000-10-03

    申请号：BR9814969

    申请日：1998-11-10

    Applicant: ERICSSON TELEFON AB L M

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

    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.

    3.
    发明专利
    未知

    公开(公告)号：NO20002264L

    公开(公告)日：2000-05-18

    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

    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.

    4.
    发明专利
    未知

    公开(公告)号：SE9902340D0

    公开(公告)日：1999-06-21

    申请号：SE9902340

    申请日：1999-06-21

    Applicant: ERICSSON TELEFON AB L M

    Inventor： LINDGREN ULF ,  BJOERK CHRISTIAN

    IPC: H04M1/725 ,  H04M

    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.

    5.
    发明专利
    未知

    公开(公告)号：EE200000218A

    公开(公告)日：2001-06-15

    申请号：EEP200000218

    申请日：1998-11-10

    Applicant: ERICSSON TELEFON AB L M

    Inventor： MATTISSON SVEN ERIK ,  BJOERK CHRISTIAN ,  LANTZ MARTIN

    IPC: H01P1/15

    Abstract: An antenna switch for selectively connecting an output differential signal pair of an output power amplifier to a single-ended signal of an antenna when transmitting and selectively connecting an input differential signal pair of a low noise input amplifier to the single-ended signal of the antenna when receiving. A first balun having a single ended-signal connected to an antenna connects a first and second output differential signal to a power output amplifier. A second balun having a single-ended signal connected to the antenna connects a first and second input differential signal to a low noise input amplifier. A first diode selectively shorts the first output differential signal to the second output differential signal of the first balun when receiving and a second diode selectively shorts the first input differential signal to the second input differential signal of the second balun when transmitting.

    7.
    发明专利
    未知

    公开(公告)号：SE9902362D0

    公开(公告)日：1999-06-21

    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 ,  H04M

    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.

    8.
    发明专利
    未知

    公开(公告)号：DE69813006D1

    公开(公告)日：2003-05-08

    申请号：DE69813006

    申请日：1998-11-10

    Applicant: ERICSSON TELEFON AB L M

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

    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.

    9.
    发明专利
    未知

    公开(公告)号：BR9814970A

    公开(公告)日：2000-10-03

    申请号：BR9814970

    申请日：1998-11-10

    Applicant: ERICSSON TELEFON AB L M

    Inventor： BJOERK CHRISTIAN ,  LANTZ MARTIN ,  MATTISSON SVEN

    IPC: H01P1/15

    Abstract: An antenna switch for selectively connecting an output differential signal pair of an output power amplifier to a single-ended signal of an antenna when transmitting and selectively connecting an input differential signal pair of a low noise input amplifier to the single-ended signal of the antenna when receiving. A first balun having a single ended-signal connected to an antenna connects a first and second output differential signal to a power output amplifier. A second balun having a single-ended signal connected to the antenna connects a first and second input differential signal to a low noise input amplifier. A first diode selectively shorts the first output differential signal to the second output differential signal of the first balun when receiving and a second diode selectively shorts the first input differential signal to the second input differential signal of the second balun when transmitting.

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