31results about How to "Components are compact" patented technology

A system and a method for coding by principal component analysis (PCA) of a multi-channel audio signal comprising the following steps: decomposing at least two channels (L, R) of said audio signal into a plurality of frequency sub-bands (I(b1), . . . , I(bN), r(b1), . . . , r(bN)), calculating at least one transformation parameter (θ(b1), . . . , θ(bN)) as a function of at least some of said plurality of frequency sub-bands, transforming at least some of said plurality of frequency sub-bands into a plurality of frequency sub-components as a function of said at least one transformation parameter (θ(b1), . . . , θ(bN)), said plurality of frequency sub-components comprising principal frequency sub-components (CP(b1), . . . , CP(bN)), combining at least some of said principal frequency sub-components (CP(b1), . . . , CP(bN)) in order to form a principal component (CP), and defining a coded audio signal (SC) representing said multi-channel audio signal (C1, . . . , CM), said coded audio signal (SC) comprising said principal component (CP) and said at least one transformation parameter (θ(b1), . . . , θ(bN)).

A room heating system includes a heatable floor having a floor heating system, and a room thermostat having a room air sensor and being connected with a regulating unit for the floor heating system. The temperature control in a room is improved by providing the room thermostat with a surface temperature sensor, which determines a temperature on the surface of the floor from a distance.

An external rearview device for a motor vehicle includes a housing, and one or more of at least one light emitting or a receiving device, including one or more of at least one light producing device or at least one camera device arranged within the housing, and at least one at least partially transparent element closing an opening provided by the housing, the at least partially transparent element being provided in form of a first module attached to the housing, and the one or more of the light producing device or the camera device being provided in form of a second module attached to the first module, the first module and the second module being mechanically releaseably coupled.

The invention discloses an LED light engine assembly. The LED light engine assembly comprises a main frame. A heat dissipation copper base body of a light engine module, a heat-conduction soft adhesive matrix of a driving power supply, the driving power supply, a glue-injection adhesive layer attached to the surface of the power supply, an LED light engine module, a waterproof ring and a lens are sequentially installed in the main frame 1. One side of the LED light engine module is provided with a light engine input positive electrode and negative electrode needle head. One side of the driving power supply is provided with a driving power supply output terminal base used for insertion of the light engine input positive electrode and negative electrode needle head. One side of the driving power supply is provided with a wiring terminal for insertion of a wiring plug. The middle of the lens is provided with a glue injection channel. The main frame is provided with a plurality of glue injection holes. One side of the lens is provided with a plug hole for insertion of the wiring plug. The invention also discloses a method for preparing the LED light engine assembly. According to the LED light engine assembly and the preparation method thereof, the whole assembly is compact, light and convenient to use, heat, electricity and light are separated, packaging is simple and convenient, the heat dissipation effect is good, the dustproof function and the waterproof function are realized, a radiator is not required, and the assembly can be directly arranged on a frame of an outdoor street lamp or a tunnel lamp for use.

A metal 3D printer air inlet and outlet structure with stable airflow is used to be installed on the metal 3D printer equipment, including an air inlet and an air outlet. The air enters from the air inlet and is discharged from the air outlet. The air outlet part includes an air outlet, an air outlet channel and an air outlet connection port, and the air outlet port communicates with the air outlet connection port through the air outlet channel; the air inlet part includes an upper air inlet, a lower air inlet, an air inlet The air passage and the air inlet connection port, the upper and lower air inlets communicate with the connection port through the air inlet passage; the air outlet, the upper and lower air inlets are all square, and the flow rate of the upper air inlet is less than the The flow of the lower air inlet, the total flow of the upper and lower air inlets is less than the flow of the air outlet. In the present invention, upper and lower air inlets are arranged on the air inlet, and one air inlet is changed to two air inlets, and the flow rate of the air outlet is greater than the flow rate of the upper and lower air inlets, so that the air inlet and outlet of the metal 3D printer The airflow of the structure is stable.

The invention discloses an alcohol-group fuel cleaning and gasifying combustion stove, consisting of a stove body, a gasifier, a secondary gasifier, a rotary-hole air distributor and an oil transmission pipe. A cofferdam is arranged at the center of the bottom of the stove body; a pre-combustion chamber surrounds the bottom of the stove body; an air inlet is arranged at the center of the cofferdam; the oil transmission pipe enters into the stove body through the air inlet and is connected with the gasifier at the middle part of the stove body; a plurality of fuel nozzles are radially arranged around the gasifier in the radial direction; the rotary-hole air distributor is fixed on the oil transmission pipe between the gasifier and the air inlet; air vents are annularly arranged around the rotary-hole air distributor; the secondary gasifier is fixed above the gasifier and divides the stove body into an upper gasification combustion chamber and a lower mixing combustion chamber; and the gasification combustion chamber and the mixing combustion chamber are communicated with each other by an air hole in the middle of the secondary gasifier.