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168 条记录 (耗时 0.027 秒)

    Multiplier circuits
    51.
    发明授权
    Multiplier circuits 失效
    多路电路

    公开(公告)号：US3714462A

    公开(公告)日：1973-01-30

    申请号：US3714462D

    申请日：1971-06-14

    申请人： BLACKMER D

    发明人： BLACKMER D

    IPC分类号： G06G7/163 ,  G06G7/24 ,  H03G1/00 ,  H03G3/04 ,  H03G7/00 ,  G06G7/12

    CPC分类号： H03G3/04 ,  G06G7/163 ,  G06G7/24 ,  H03G1/0005 ,  H03G1/0017 ,  H03G7/002

    摘要： A gain control or multiplier circuit in which an input operational amplifier has a pair of feedback paths through respective collector-emitter circuits of opposite conductivity type transistors to form a first bipolar circuit for converting an input signal to a log form by virtue of the log-linear transfer characteristics of the transistors. Each transistor of the first circuit has connected to it another transistor for converting the log signal into its antilog. A second operational amplifier is used as an output buffer for the resulting combined output signals from the antilog transistors. One version employs a bias circuit connected between the emitters of the first bipolar circuit transistors to adjust quiescent current. Another version uses a neutralization circuit to pump currents into the input summing junctions of both operational amplifiers to adjust for capacitive storage effects. In all cases, a control voltage is summed with the log signal by applying the voltage to the bases of the log and antilog converting transistors, thereby controlling the gain between the two operational amplifiers.

    摘要翻译： 一种增益控制或乘法器电路，其中输入运算放大器具有通过相反导电型晶体管的相应集电极 - 发射极电路的一对反馈路径，以形成第一双极电路，用于通过对数变换将输入信号转换成对数， 晶体管的线性传输特性。 第一电路的每个晶体管已经连接到另一晶体管，用于将对数信号转换成其对数记录。 第二运算放大器用作来自反对数晶体管的所得到的组合输出信号的输出缓冲器。 一个版本采用连接在第一双极电路晶体管的发射极之间的偏置电路来调节静态电流。 另一个版本使用中和电路将电流泵送到两个运算放大器的输入求和结，以调整电容性存储效应。 在所有情况下，通过将电压施加到对数和对数转换晶体管的基极，从而控制两个运算放大器之间的增益，将控制电压与对数信号相加。

    Engine
    52.
    发明授权
    Engine 有权

    公开(公告)号：US11959416B1

    公开(公告)日：2024-04-16

    申请号：US18488037

    申请日：2023-10-17

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： Yuto Yoshizaki

    IPC分类号： F02B77/13 ,  H02G3/04 ,  H03G3/04

    CPC分类号： F02B77/13 ,  H02G3/0437

    摘要： An engine includes a cylinder head, a wire assembly including multiple wire harnesses and a protector that holds the wire harnesses together, a sound absorber, and an engine cover. The engine cover is attached to the cylinder head in a state in which the wire assembly and the sound absorber are held between the cylinder head and the engine cover to elastically deform the sound absorber. The protector is held in a state of being pressed against the cylinder head by a restoring force of the sound absorber. The sound absorber includes a contact region pressed against the protector. The sound absorber includes an engagement portion located at an edge of the contact region. The engagement portion is thicker than the thickness of the contact region. The engagement portion is adjacent to a side surface of the protector.

    Control Based On Proximity
    54.
    发明申请
    Control Based On Proximity 有权

    公开(公告)号：US20220229627A1

    公开(公告)日：2022-07-21

    申请号：US17562547

    申请日：2021-12-27

    申请人： Sonos, Inc.

    发明人： Jonathon Reilly ,  Neil Griffiths

    IPC分类号： G06F3/16 ,  H03G3/04 ,  H03G3/34 ,  H05B47/115 ,  H03G3/02 ,  F21V23/04 ,  G06F3/01 ,  H04R27/00

    摘要： Embodiments described herein provide for detecting presence of an object in proximity to a playback device and responsively performing one or more operations. In an example implementation, a playback device detects, via a proximity detector of the playback device, presence of an object in proximity to the playback device. In response to detecting the presence of the object, the playback device performs one or more operations.

    Volume Limit
    55.
    发明申请
    Volume Limit 有权

    公开(公告)号：US20210103424A1

    公开(公告)日：2021-04-08

    申请号：US17080640

    申请日：2020-10-26

    申请人： Sonos, Inc.

    发明人： Chris Bierbower ,  Nicholas Maniskas

    IPC分类号： G06F3/16 ,  G11B27/34 ,  H03G3/30 ,  H03G3/04 ,  H03G7/00

    摘要： An example first playback device includes programming to perform functions including: (1) storing an active volume state variable in memory, wherein the active volume state variable corresponds to a current playback volume; (2) storing a volume limit state variable in memory, wherein the volume limit state variable corresponds to a playback volume limit of the first playback device; (3) detecting a command to begin playback of media at a proposed playback volume different from the current playback volume; (4) based on comparing (i) the playback volume limit and (ii) the proposed playback volume, selecting a startup playback volume; (5) playing back media at the startup playback volume; and (6) causing at least a second playback device of the media playback system to play back media at the startup playback volume.

    Automated audio volume stabilizer
    56.
    发明授权
    Automated audio volume stabilizer 有权

    公开(公告)号：US10824385B2

    公开(公告)日：2020-11-03

    申请号：US14633232

    申请日：2015-02-27

    申请人： CHARTER COMMUNICATIONS OPERATING, LLC

    发明人： Justin Earl Ballard

    IPC分类号： H03G3/00 ,  G06F3/16 ,  H04N21/439 ,  H04N21/436 ,  H03G7/00 ,  H03G3/04 ,  H04N21/485

    摘要： The specification and drawings present a new method, apparatus and software related product (e.g., a computer readable memory or a storage device) for automatically stabilizing a volume of different audio streams/contents to predefined boundary levels which may be requested by a user. According to an embodiment, an automated volume control feature may allow a user to set the highest level of volume for any audio stream played on a user's device for automatically adjusting the incoming audio content volume of audio streams not to exceed at least the highest level of volume set as the maximum threshold volume.

    Command device to control a synchrony group
    57.
    发明授权
    Command device to control a synchrony group 有权

    公开(公告)号：US10579328B2

    公开(公告)日：2020-03-03

    申请号：US15973227

    申请日：2018-05-07

    申请人： Sonos, Inc.

    发明人： Stefan Reichert ,  David John McCaffree Amaranto

    IPC分类号： G05B11/01 ,  G06F3/16 ,  G08C17/02 ,  H03G3/02 ,  H03G3/04 ,  H03G3/30 ,  H04R3/12

    摘要： Embodiments are described herein that provide a dedicated command device that is bonded to a zone player or zone to perform adjustments to the zone player or zone. In an example implementation, a command device receives an instruction to pair with a first playback device that is associated with a group of playback devices that includes the first playback device and at least one additional playback device. The group of playback devices is associated with at least one group variable controlling playback by the playback devices of the group. The command device receives an input to adjust a first group variable of the at least one group variable and transmits, via a wireless communications interface, a command that causes an adjustment of the first group variable for the group of playback devices.

    Volume limit
    60.
    发明授权
    Volume limit 有权

    公开(公告)号：US09678708B2

    公开(公告)日：2017-06-13

    申请号：US14696366

    申请日：2015-04-24

    申请人： Sonos, Inc.

    发明人： Chris Bierbower ,  Nicholas Maniskas

    IPC分类号： G06F17/00 ,  G06F3/16 ,  G11B27/34 ,  H03G3/30 ,  H03G7/00 ,  H03G3/04

    CPC分类号： G06F3/165 ,  G11B27/34 ,  H03G3/04 ,  H03G3/3026 ,  H03G7/002 ,  H03G7/005 ,  H04R2227/005

    摘要： An example playback device may store an active volume state variable in memory, where the active volume state variable corresponds to a current playback volume. The playback device may also store a volume limit state variable in memory, where the volume limit state variable corresponds to a playback volume limit of the playback device. The playback device may detect a command to begin playback of media from a given source and then select a startup playback volume to be one of the current playback volume and the playback volume limit based on the given source of the command to begin playback. The playback device may then play back media at the startup playback volume.