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    22.
    发明专利
    未知

    公开(公告)号：DE69904169D1

    公开(公告)日：2003-01-09

    申请号：DE69904169

    申请日：1999-05-27

    Applicant: ERICSSON TELEFON AB L M

    Inventor： KHULLAR ANDERS ,  GRAHM TORBJOERN ,  GAERDENFORS TORBJOERN ,  SEDVALLSON SEBASTIAN

    IPC: H03G3/30 ,  H03M3/02 ,  H03M7/00

    Abstract: In order to increase the resolution of signals input to a power amplifier, this system includes a power control circuit which utilizes sigma delta modulated values which are stored in a memory device. These values, after retrieval from an addressable memory, are supplied only to a low pass filter before being sent to the control input of the power amplifier. The use of sigma delta modulated values can result in a reduction of hardware within the power control circuit of communication devices and increase the signal resolution by moving noise elements from the signal.

    23.
    发明专利
    未知

    公开(公告)号：AT228730T

    公开(公告)日：2002-12-15

    申请号：AT99930032

    申请日：1999-05-27

    Applicant: ERICSSON TELEFON AB L M

    Inventor： KHULLAR ANDERS ,  GRAHM TORBJOERN ,  GAERDENFORS TORBJOERN ,  SEDVALLSON SEBASTIAN

    IPC: H03G3/30 ,  H03M3/02 ,  H03M7/00

    Abstract: In order to increase the resolution of signals input to a power amplifier, this system includes a power control circuit which utilizes sigma delta modulated values which are stored in a memory device. These values, after retrieval from an addressable memory, are supplied only to a low pass filter before being sent to the control input of the power amplifier. The use of sigma delta modulated values can result in a reduction of hardware within the power control circuit of communication devices and increase the signal resolution by moving noise elements from the signal.

    24.
    发明专利
    未知

    公开(公告)号：EE200000188A

    公开(公告)日：2001-04-16

    申请号：EEP200000188

    申请日：1998-10-06

    Applicant: ERICSSON TELEFON AB L M

    Inventor： GAERDENFORS TORBJOERN ,  BENGTSSON ERIK ,  ENSTROEM HAAKAN

    IPC: H03B5/32 ,  H03B5/04 ,  H03B5/36 ,  H03L1/02 ,  H03L5/00

    Abstract: A highly stable single chip crystal controlled oscillator with automatic gain control. An amplitude detector monitors the output of a crystal controlled oscillator amplifier and produces a feedback signal proportional to the output signal of the amplifier to ensure oscillation is induced at startup and that the amplitude of oscillation is limited to a preselected value during operation to conserve power consumption by the amplifier. The capacitor tank circuit connected to the input of the amplifier includes a voltage variable capacitor the voltage across which is initially established at manufacture to tune the oscillation frequency to a preselected value. The voltage across the voltage variable capacitor is also adjusted to compensate for temperature variations in the circuit.

    27.
    发明专利
    未知

    公开(公告)号：DE69815706D1

    公开(公告)日：2003-07-24

    申请号：DE69815706

    申请日：1998-10-06

    Applicant: ERICSSON TELEFON AB L M

    Inventor： GAERDENFORS TORBJOERN ,  BENGTSSON ERIK ,  ENSTROEM HAAKAN

    IPC: H03B5/32 ,  H03B5/04 ,  H03B5/36 ,  H03L1/02 ,  H03L5/00

    Abstract: A highly stable single chip crystal controlled oscillator with automatic gain control. An amplitude detector monitors the output of a crystal controlled oscillator amplifier and produces a feedback signal proportional to the output signal of the amplifier to ensure oscillation is induced at startup and that the amplitude of oscillation is limited to a preselected value during operation to conserve power consumption by the amplifier. The capacitor tank circuit connected to the input of the amplifier includes a voltage variable capacitor the voltage across which is initially established at manufacture to tune the oscillation frequency to a preselected value. The voltage across the voltage variable capacitor is also adjusted to compensate for temperature variations in the circuit.

    28.
    发明专利
    未知

    公开(公告)号：SE516936C2

    公开(公告)日：2002-03-26

    申请号：SE9904516

    申请日：1999-12-10

    Applicant: ERICSSON TELEFON AB L M

    Inventor： BJOERKENGREN ULF CHRISTIAN ,  GAERDENFORS TORBJOERN

    IPC: G02F1/1345 ,  G02F1/13 ,  H01L23/498 ,  H01L23/538 ,  H01L23/13 ,  H01L25/065

    Abstract: A liquid-crystal display (LCD) comprises an LCD device, including a substrate (107) with substrate pads (106) on the top surface of the substrate (107) and a chip (105) with chip electrodes (104) operatively connected to said substrate pads (106). Additionally, an interposer device (100) is mounted between the chip (105) and the substrate (107), wherein the interposer device (100) inter-connects the substrate pads (106) configured in a first pattern with the electrodes (104) configured in an arbitrary second pattern on the chip area, wherein the electrodes (104) have a reduced electrode pitch essentially smaller than said pad pitch.

    29.
    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.

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