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63results about How to "Save complexity" patented technology

Tonal rotors

A set of complex rotations are used to implement a unitary “Q” matrix that can arise in various transmitters and/or receivers in communication line vectoring. Each complex rotation is a set of real rotations, where the minimum number of real rotations to perform the complex rotation is three, and where the minimum number of angles to characterize the real rotations is two. An order of rotations is also provided. The invention assists in the efficient implementation of any unitary “Q” matrix in a QR or other sophisticated matrix factorization. A complex form of the so-called “Givens” implementation of the Q matrix is characterized in terms of a sequence of complex rotations that can implemented using a complex rotor computational unit that accepts a minimum of two real angles and a pair of integer indices for each of a set of successive complex rotor calculations and then implements the complex rotation as a series of a minimum of three real rotations with one real angle used twice and the other real angle used once, providing two complex outputs (that is, two rotated data entries from a data vector comprising indexed communication data) for two complex inputs (two original data entries from a data vector comprising indexed communication data). The index-angle sets for each successive rotation can be provided by a complex rotor calculation unit, which may be collocated with the complex rotor computational unit, located in a controller such as a DSL optimizer, or located in any other suitable device or apparatus that has performed the QR factorization upon supplied matrix MIMO transfer functions for the vectored channel.
Owner:ASSIA SPE LLC CO THE CORP TRUST CO

High-speed elevator balancing compensation chain and production method of anchor chain thereof

The invention provides a high-speed elevator balancing compensation chain and a production method of an anchor chain thereof. The anchor chain comprises unstudded anchor chains and interior-studded anchor chains, the interior-studded anchor chains comprise chain rings I and stay pins, the stay pins are located in the chain rings I and placed in the middles of the interior portions of the chain rings I, the stay pins connect the upper and lower portions of the chain rings I, and the stay pins and the chain rings I are connected through connecting buckles. The unstudded anchor chains comprise chain rings II, the unstudded anchor chains and the interior-studded anchor chains are connected in a mode of 1 : 1-3, and the length of the chain ring II of each unstudded anchor chain is one to two times as much as the length of the chain ring I of each interior-studded anchor chain. According to the high-speed elevator balancing compensation chain and the production method of the anchor chain thereof, through the connecting mode, the chain rings of the anchor chain are not prone to loosing and slipping down in the operating process, noise in the operating process is reduced effectively, and the elevator balancing compensation chain is not prone to being twisted; and meanwhile, the strength and the borne load of the elevator balancing compensation chain are effectively enhanced on the premise that the whole weight is not added, and the elevator balancing compensation chain can be suitable for a high-speed elevator at a speed greater than 3 m/s.
Owner:JIANGSU XINGHUA RUBBER BELT

Film mulching and soil covering dry farming method for rice in cold region

InactiveCN108142232ASave seedlingsOmit transplantingPlant protective coveringsRice cultivationWater savingPlant disease
The invention provides a film mulching and soil covering dry farming method for rice in a cold region. The method comprises the following steps: (1) soil preparation stage before seed sowing: carryingout autumn soil preparation on the to-be-sowed ground and carrying out one-turning-two-rotating or deep-loosening-two-rotating so that the to-be-sowed ground is flat, soil blocks are fine and brokenand the ground is in a to-be-sowed state; (2) film mulching: adhering rice seeds to fertilizers by using environmentally friendly glue on a biodegradable film and then storing the film for mulching; (3) film mulching and soil covering: applying a seed fertilizer and a base fertilizer into soil of the to-be-sowed ground, laying the biodegradable film adhered with the rice seeds in step (2) on the ground, covering the film with soil and then pressing to ensure soil moisture content of the soil and early emergence; and (4) after management: carrying out leaf fertilizer application management, disease management, insect management and water replenishing management after sowing the seeds and before harvesting, and then harvesting the rice. The method is water-saving, labor-saving, environmentally friendly, economical and simple, meanwhile, complicated and difficult links of seedling culture, rice transplanting, weeding and the like are omitted, and a planting procedure is simplified reasonably.
Owner:佳木斯高坤农业科技发展有限公司

Class response system based on mobile phone

The invention discloses a class response system based on mobile phones. The system is characterized by comprising a plurality of mobile phone terminals and a response processing device, wherein the mobile phone terminal comprises a keyboard dialing module and an independent key coding transmitting module communicated with the keyboard dialing module; the response processing device is matched with the key coding transmitting module and comprises a wireless receiving device and a decoding display device connected with the wireless receiving device; wherein the key coding transmitting modules of the plurality of mobile phone terminals are used for capturing key states of the keyboard dialing module in real time respectively, and transmitting the key states to the response processing device to be displayed. According to the scheme, the mobile phone terminals can be used as response system terminals through simple reformation; a plurality of transmitter members set separately can be avoided; the cost and the complexity are saved; furthermore, since the keyboard dialing modules of the mobile phone terminals are transmitted to the key coding transmitting modules, the mobile phone terminals are subjected to monitoring in class; the whole mobile phone terminals are of a limited application mode, so that the mobile phone terminal is limited in other uses in class.
Owner:禾瑞(厦门)信息科技有限公司

Method for measuring volt-ampere characteristic of electric material

The invention belongs to the technical field of measurement on a volt-ampere characteristic of an electric material and relates to a method for measuring the volt-ampere characteristic of the electric material. The method comprises the following steps of: firstly, inputting a voltage range and an interval of the electric material to be measured, which need to be measured, then carrying out automation control according to input information, inputting the proper interval and making a volt-ampere characteristic curve of the electric material; after measuring a current passing through the material by a pA meter, outputting and transmitting the current to a measurement equipment system, enabling the number grade of the current measured by the pA meter to reach pA and measuring the volt-ampere characteristic of the high-resistance electric material; and carrying out voltage input and judgment, i.e. inputting a voltage in the given voltage range by the measurement equipment system, applying the voltage to the electric material, gradually increasing the voltage, judging whether the voltage is in the range or not by the measurement equipment system, continuously carrying out measurement if the voltage is in the range and stopping the measurement if the volage goes beyond the range. The method has a reliable principle, is accurate to measure, is visual for carrying out data analysis, is simple to operate, is time-saving, is visual in result display, is low in cost and is suitable to measure the volt-ampere characteristics of various electric materials.
Owner:QINGDAO UNIV
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