Interference-resistant compensation for illumination devices using multiple series of measurement intervals

    公开(公告)号:USRE49705E1

    公开(公告)日:2023-10-17

    申请号:US17087562

    申请日:2020-11-02

    CPC classification number: H05B45/22 H05B45/375

    Abstract: A method and illumination device are provided for interference-resistant compensation in light emitting diode (LED) illumination devices. In one embodiment, the method includes bringing to a level insufficient to produce illumination the respective drive current of all except one of multiple emission LED elements for the duration of a first measurement interval and a later-occurring second measurement interval. The first and second measurement intervals are within respective first and second series of measurement intervals interspersed with periods of illumination, and the first and second series of measurement intervals are separated by respective first and second offsets from a timing reference. An embodiment of an illumination device includes multiple emission LED elements, one or more photodetectors, and a lamp control circuit, where the lamp control circuit is adapted to perform steps of the method.

    Control device having an adaptive transmission threshold

    公开(公告)号:US11785641B2

    公开(公告)日:2023-10-10

    申请号:US17334111

    申请日:2021-05-28

    CPC classification number: H04W74/0808 H04B17/318

    Abstract: Wireless devices may perform modified carrier sense multiple access (CSMA) techniques in order to increase reliability while maintaining a reasonable latency for communications. The wireless devices may perform listen-before-talk (LBT) techniques using an adaptive transmission threshold (e.g., an adaptive CSMA threshold). The transmission threshold may be compared to a measured signal strength magnitude to determine whether the frequency channel is quiet enough for transmission of a packet. The transmission threshold may be initially set to equal a minimum value. The wireless device may increase the transmission threshold after each instance of LBT failure to allow the wireless device to get progressively more likely to transmit the packet each time LBT fails.

    Window Treatment Having a Spring Wrap Brake
    134.
    发明公开

    公开(公告)号:US20230313611A1

    公开(公告)日:2023-10-05

    申请号:US18042097

    申请日:2021-08-18

    Inventor: David A. Kirby

    CPC classification number: E06B9/90 E06B9/42 E06B9/72 E06B2009/905

    Abstract: Described herein are brake assemblies that may be useful for window treatments, such as spring-balanced motorized window treatments, including spring-balanced shades. The brake assemblies include brake springs of wire formed into a plurality of coils. The plurality of coils may terminate in a tang assembly, the tang assembly having a tang and a support portion. A support portion supports the tang when the tang is acted on by a force (e.g., a spring tightening or a spring loosening force). The support portion greatly reduces the hazard of the tang bending, because the tang is supported at each of its ends. With less chance of bending at the tang, a smaller wire diameter may be used for the brake spring, which creates less drag when rotating in a driven state. In the case of battery-driven shades, less drag saves battery life.

    Bracket applied to a window treatment

    公开(公告)号:USD1000257S1

    公开(公告)日:2023-10-03

    申请号:US29836151

    申请日:2022-04-25

    Abstract: FIG. 1 is a perspective view of a bracket applied to a window treatment showing our design;
    FIG. 2 is another perspective view thereof;
    FIG. 3 is a front view thereof;
    FIG. 4 is a rear view thereof;
    FIG. 5 is a left side view thereof;
    FIG. 6 is a right side view thereof;
    FIG. 7 is a top view thereof;
    FIG. 8 is a bottom view thereof;
    FIG. 9 is a perspective view thereof in an alternate position;
    FIG. 10 is another perspective view thereof;
    FIG. 11 is a front view thereof;
    FIG. 12 is a rear view thereof;
    FIG. 13 is a left side view thereof;
    FIG. 14 is a right side view thereof;
    FIG. 15 is a top view thereof; and,
    FIG. 16 is a bottom view thereof.
    The broken lines illustrate structure or features which form no part of the claimed design.

    OCCUPANT DETECTION DEVICE
    137.
    发明公开

    公开(公告)号:US20230305131A1

    公开(公告)日:2023-09-28

    申请号:US18134421

    申请日:2023-04-13

    Inventor: James P. Steiner

    CPC classification number: G01S13/04 G01J5/0025 G05B13/0265 G06V40/10

    Abstract: An occupant detection device (e.g., sensor) may include an occupant detection circuit (e.g., a radar occupant detection circuit) and a control circuit. The occupant detection circuit may determine the location of an occupant in a space with reference to a global coordinate associated with the detection circuit and the control circuit may transform the location of the occupant into a local coordinate system associated with a region of interest in the space. The control circuit may use the location information to determine whether the occupant has entered or left the region of interest and adjust an occupant count for the region of interest based on the determination. The control circuit may acquire knowledge about the region of interest during a configuration or commissioning procedure.

    Load Control Device Having an Overcurrent Protection Circuit

    公开(公告)号:US20230299658A1

    公开(公告)日:2023-09-21

    申请号:US18321881

    申请日:2023-05-23

    Abstract: A load control device for controlling power delivered from an alternating-current power source to an electrical load may comprise a controllably conductive device, a control circuit, and an overcurrent protection circuit that is configured to be disabled when the controllably conductive device is non-conductive. The control circuit may be configured to control the controllably conductive device to be non-conductive at the beginning of each half-cycle of the AC power source and to render the controllably conductive device conductive at a firing time during each half-cycle (e.g., using a forward phase-control dimming technique). The overcurrent protection circuit may be configured to render the controllably conductive device non-conductive in the event of an overcurrent condition in the controllably conductive device. The overcurrent protection circuit may be disabled when the controllably conductive device is non-conductive and enabled after the firing time when the controllably conductive device is rendered conductive during each half-cycle.

    DIRECT-CURRENT POWER DISTRIBUTION IN A CONTROL SYSTEM

    公开(公告)号:US20230299587A1

    公开(公告)日:2023-09-21

    申请号:US18200726

    申请日:2023-05-23

    CPC classification number: H02J3/28 H02J3/001 E06B9/68 E06B2009/6809

    Abstract: A control system may include a direct-current (DC) power bus for charging internal energy storage elements in control devices of the control system. For example, the control devices may be motorized window treatments configured to adjust a position of a covering material to control the amount of daylight entering a space. The system may include a bus power supply that may generate a DC voltage on the DC power bus. For example, the DC power bus may extend from the bus power supply around the perimeter of a floor of the building and may be connected to all of the motorized window treatments on the floor (e.g., in a daisy-chain configuration). An over-power protection circuit may be configured to disconnect the bus power supply if a bus current exceeds a threshold for a period of time.

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