Abstract: A self-lifting toilet seat system includes a toilet seat configured to be sat upon by a user. The system has a hinge configured to rotatably couple the toilet seat and a toilet bowl. The hinge is configured so that the toilet seat is transitionable from an up position to a down position. A lifting system is configured to raise the toilet seat towards the up position. A sealed hinge housing has at least a portion of a delay system therein. The delay system is configured to cause a time delay before the lifting system causes the toilet seat to self-lift towards the up position. The delay system is configured so that the time delay begins after removal of a threshold downward force on the toilet seat.

Abstract: A self-lowering toilet seat system includes a toilet bowl and a toilet seat. The system includes a hinge rotatably coupling the toilet seat and the toilet bowl. The hinge is configured so that the toilet seat is transitionable between a down position and an up position. A lowering device is configured to self-lower the toilet seat towards the down position. A fixedly sealed hinge housing has a delay device therein. The delay device is configured to cause a seat time delay before the lowering device causes the toilet seat to lower towards the down position. The delay device is engaged by applying a seat lifting force to raise the toilet seat towards the up position and removing the seat lifting force from the toilet seat. The delay device is configured to reset the seat time delay when the lifting force is reapplied before the delay device has expired.

Abstract: A self-lifting toilet seat system includes a toilet seat configured to be sat upon by a user. The system has a hinge configured to rotatably couple the toilet seat and a toilet bowl. The hinge is configured so that the toilet seat is transitionable from an up position to a down position. A lifting system is configured to raise the toilet seat towards the up position. A sealed hinge housing has at least a portion of a delay system therein. The delay system is configured to cause a time delay before the lifting system causes the toilet seat to self-lift towards the up position. The delay system is configured so that the time delay begins after removal of a threshold downward force on the toilet seat.

Abstract: An electric toothbrush rotating replacement head device includes a toothbrush replacement head body. The toothbrush replacement head body includes a toothbrush handle and a toothbrush head, the toothbrush handle defines a cavity, the toothbrush head is disposed on a top of the cavity, an inside of the cavity is provided with an elastic connecting rod, a bottom of the elastic connecting rod is provided with a spring limiting disc, a top of the elastic connecting rod defines a first pin hole, the elastic connecting rod is disposed in a compression spring, and the compression spring is disposed on the spring limiting disc. The toothbrush head includes a convex block, the convex block defines a second pin hole, and the elastic connecting rod is inserted into the second pin hole and connected to the toothbrush head through the pin.

Abstract: A self-lowering toilet seat system includes a toilet bowl and a toilet seat. The system includes a hinge rotatably coupling the toilet seat and the toilet bowl. The hinge is configured so that the toilet seat is transitionable between a down position and an up position. A lowering device is configured to self-lower the toilet seat towards the down position. A fixedly sealed hinge housing has a delay device therein. The delay device is configured to cause a seat time delay before the lowering device causes the toilet seat to lower towards the down position. The delay device is engaged by applying a seat lifting force to raise the toilet seat towards the up position and removing the seat lifting force from the toilet seat. The delay device is configured to reset the seat time delay when the lifting force is reapplied before the delay device has expired.

Abstract: A self-lifting toilet seat system includes a toilet seat configured to be sat upon by a user. The system has a hinge configured to rotatably couple the toilet seat and a toilet bowl. The hinge is configured so that the toilet seat is transitionable from an up position to a down position. A lifting system is configured to raise the toilet seat towards the up position. A sealed hinge housing has at least a portion of a delay system therein. The delay system is configured to cause a time delay before the lifting system causes the toilet seat to self-lift towards the up position. The delay system is configured so that the time delay begins after removal of a threshold downward force on the toilet seat.

Abstract: A self-lifting toilet seat system includes a toilet seat configured to be sat upon by a user. The system has a hinge configured to rotatably couple the toilet seat and a toilet bowl. The hinge is configured so that the toilet seat is transitionable from an up position to a down position. A lifting system is configured to raise the toilet seat towards the up position. A sealed hinge housing has at least a portion of a delay system therein. The delay system is configured to cause a time delay before the lifting system causes the toilet seat to self-lift towards the up position. The delay system is configured so that the time delay begins after removal of a threshold downward force on the toilet seat.

Abstract: The present disclosure provides a multimedia data processing method, apparatus, and electronic device, the method is performed by a terminal device, in peration, whether or not a shield instruction for playing multimedia data is received is detected, and the shield instruction indicates that the target parameters meet the preset conditions. Multimedia data is shielded. If the shield instruction is received, the target parameters in the multimedia data to be played are detected. If the target parameters in the multimedia data to be played meet the preset conditions, the multimedia data to be played is shielded.

Abstract: A method of fast onboarding a new device to an existing network having one or more existing devices includes discovering one or more new devices by the one or more existing devices, selecting the new device from the discovered one or more new devices, selecting an existing device from the one or more existing devices to initiate an onboarding process for the selected new device, encoding configuration information for the new device to join the existing network, broadcasting the encoded configuration information, capturing the encoded configuration information by the new device. and join the new device into the existing network.

Abstract: A security monitoring system includes a sensor and a magnetic base. The sensor may include a ferromagnetic convex cover. The magnetic base may include a concave surface. The sensor is configured to be magnetically releasably mounted onto the magnetic base by constructing the convex cover of the sensor to snug with the concave surface of the magnetic base.

Abstract: A Radio Frequency (RF) cascode power amplifier operates with differing battery supply voltages. A transconductance stage has a transistor with an RF signal input at its gate. A cascode stage has at least one cascode transistor, the cascode stage coupled in series with the transconductance stage between a battery voltage node and ground, the cascode stage having an RF signal output at the battery voltage node and at least one bias input to the at least one cascode transistor. Cascode bias feedback circuitry applies fixed bias voltage(s) to the at least one two bias inputs for a low battery voltage and applies feedback bias voltage(s) to the at least two bias inputs for a high battery voltage, the feedback bias voltage(s) based upon a voltage of the battery voltage node. More than two differing battery supply voltages are supported.

Abstract: A Radio Frequency (RF) cascode power amplifier operates with differing battery supply voltages. A transconductance stage has a transistor with an RF signal input at its gate. A cascode stage has at least one cascode transistor, the cascode stage coupled in series with the transconductance stage between a battery voltage node and ground, the cascode stage having an RF signal output at the battery voltage node and at least one bias input to the at least one cascode transistor. Cascode bias feedback circuitry applies fixed bias voltage(s) to the at least one two bias inputs for a low battery voltage and applies feedback bias voltage(s) to the at least two bias inputs for a high battery voltage, the feedback bias voltage(s) based upon a voltage of the battery voltage node. More than two differing battery supply voltages are supported.

Abstract: A Radio Frequency (RF) cascode power amplifier operates with differing battery supply voltages. A transconductance stage has a transistor with an RF signal input at its gate. A cascode stage has at least one cascode transistor, the cascode stage coupled in series with the transconductance stage between a battery voltage node and ground, the cascode stage having an RF signal output at the battery voltage node and at least one bias input to the at least one cascode transistor. Cascode bias feedback circuitry applies fixed bias voltage(s) to the at least one two bias inputs for a low battery voltage and applies feedback bias voltage(s) to the at least two bias inputs for a high battery voltage, the feedback bias voltage(s) based upon a voltage of the battery voltage node. More than two differing battery supply voltages are supported.

Abstract: The invention provides methods and devices for estimating power amplifier nonlinearity using simple correlation techniques. Methods and devices of the invention can monitor a power amplifier that has digitally modulated inputs and an output containing more than one signal stream. A preferred method of the invention creates a test signal by forming the products of several pseudorandom noise sequences from the digitally modulated inputs to the power amplifier. Nonlinear contributions of the power amplifier output are determined by cross-correlating the test signal and the total output signal of the power amplifier. In preferred embodiments, the determined nonlinear contributions of the power amplifier are used to introduce corrective predistortion in the power amplifier.

Abstract: The invention provides methods and devices for estimating power amplifier nonlinearity using simple correlation techniques. Methods and devices of the invention can monitor a power amplifier that has digitally modulated inputs and an output containing more than one signal stream. A preferred method of the invention creates a test signal by forming the products of several pseudorandom noise sequences from the digitally modulated inputs to the power amplifier. Nonlinear contributions of the power amplifier output are determined by cross-correlating the test signal and the total output signal of the power amplifier. In preferred embodiments, the determined nonlinear contributions of the power amplifier are used to introduce corrective predistortion in the power amplifier.