30results about How to "Avoid radio frequency interference" patented technology

A two-piece RF interference shield and method of manufacturing the same that is cost efficient and easily adapted for use with existing electrical devices. The RF shield includes a bottom portion mounted to the circuit board and a top portion which fits onto the bottom portion. The RF electrical interference shield can be mounted to circuit boards (e.g., by soldering) to prevent electrical components from causing RF interference. The RF shield of the present invention also allows for easy removal of the top of the RF shield so as to provide access to the interior for rework or repair of the electrical components covered by the shield, without having to unsolder the bottom portion of the shield. The two-piece shield for shielding an electrical component comprises a top portion and bottom portion that are fitted together so as to enclose the electrical components to be shielded. The top and bottom portions snap together, e.g., by way of barbs located on one of the portions that fit into corresponding holes or slots located on the other portion.

The present invention contributes to advancements in the art of inventory management and distribution by providing a system and method for processing, distributing, and tracking reusable inventory items. Reusable articles, such as surgical garments and accessories, are adapted with radio frequency identification (“RFID”) tags having unique identification numbers. A “reader” is used to retrieve stored information from the tags without requiring direct contact or clear line-of-sight. The reusable articles are processed and distributed using an inventory management system wherein lifecycle data is obtained for each reusable article. The reusable articles are distributed to the end users from central processing facilities, used, returned, cleaned, inspected, folded, sterilized, and returned to inventory for re-distribution. Periodic quality control inspections are conducted in response to predetermined usage parameters. The use of RFID tags and a corresponding computer network allows for the acquisition of data corresponding to each reusable article within a distribution system having multiple remote distribution and processing facilities. The acquired data is transmitted to a central computer processing system via a secured wide area computer network for use and analysis. Data processing computer servers at each remote distribution and processing facility electronically linked to a central data processing server provide a fail-safe network for acquired data.

The invention provides a method of radio frequency interference resistance of hop channel in industrial wireless networks and relates to industrial wireless communication networks. The invention is based on the adding of hop channel information and beacon frames of communication protocols of the industrial wireless networks; a coordinator generates and broadcasts hop channel sequences of a system to all devices of a whole network and the hop channel information which contains take-off points of the system and the take-off points of an adjacency system is added into the load of the beacon frames; a router and a terminal device analyze the beacon frames and an unused take-off point is selected as the present take-off point; the coordinator and the router dynamically evaluate the channels of the networks and define the interfered channels by packet loss rates; the coordinator shields the interfered channels; a next channel of the interfered channels in the hop channel sequences replaces the position of the interfered channels in the hop channel sequences; the radio frequency interference between industrial wireless network systems within the scope of the same radio frequency can be effectively avoided. The method can greatly improve the coexistence of industrial wireless network communication environments and the anti-interference capability.

A system integrates a hearing aid with devices such as wireless telephones, advantageously avoiding radio frequency (RF) interference. In one embodiment, a processor transforms an electrical signal to compensate for a hearing impairment. The function used for signal transformation can be accessed via a processor memory enhancement such as a smart card. A digital-to-analog converter (DAC) converts the transformed signal to an analog signal, which then goes to an amplifier and speaker. In other embodiments, an analog amplifier transforms the electrical signal.

An integrated electronic system housing and magnet structure (12) for an imaging system (10) includes a housing (40) and a radio frequency shield (46). The housing (40) is coupled to the magnet structure (13) and contains imaging system support electronics (42). The radio frequency shield (46) is coupled to the housing (40) and prevents radio frequency interference of a radio frequency receiver coil (30) from the imaging system support electronics (42).

An NQR scanner for detecting the presence of a substance containing quadrupole nuclei within an object. A pulse generating means (1) generates pulse sequences that are used to irradiate the object in a pulsed magnetic field at a requisite NQR frequency for the substance to be detected. A high power RF transmit amplifier (2) amplifies the signal to produce sufficient magnetic field strength to irradiate a scan volume within which the object is disposed for detection purposes and cause an NQR transition to a detectable level within the substance if present within the object. A method for detecting the presence of a substance containing quadrupole nuclei within an object is also described

A locker for receiving and retaining one or more packages comprising: an enclosure, the enclosure defining a storage cavity, the storage cavity configured to receive and retain the one or more goods, a radio signal sensing assembly disposed on the enclosure for sensing radio signals, the radio signal sensing assembly disposed on the enclosure in an orientation such that the radio signal sensing assembly can detect the presence of radio signals within the storage cavity.

The invention belongs to the field of production automation, and provides a method and system for writing values to a wireless communication computer product sample. The method includes the following steps: arranging a test computer having N wireless network cards, establishing the only wireless communication connection between each of M wireless network cards with each of M wireless communication product machine samples which are disposed in a shielding box; a test computer writing identity identifying key words of each wireless communication computer product sample to M wireless communication computer product samples; and after writing the identity identifying key words, the test computer turning off the only wireless communication connection between each wireless network card and each wireless communication computer product sample. According to the invention, the technical solution has the following characteristics: 1. increases test efficiency; 2. avoids radio frequency interference caused by poor shielding of the shielding box; and 3. is applicable to all wireless communication products which are unable to be joined through communication wire material interfaces, and also protects consistency of product appearance and production.

The present invention discloses a plasma processing apparatus, which comprises a reaction chamber. An upper electrode and a lower electrode are arranged in the reaction chamber. A power supply device is arranged below the lower electrode and is used for applying a radio frequency (RF) power to the lower electrode. A pipeline and an electric wire are arranged below the lower electrode. The power supply device comprises a hollow RF conveying pipeline. The pipeline and the electric wire are arranged inside the hollow RF conveying pipeline. In this way, the space inside the lower electrode is greatly saved, so that other parts can be improved in the larger space of the lower electrode. Meanwhile, a liquid conveying pipeline, a gas conveying pipeline and electric wires, which are made of soft materials, are placed inside the RF conveying pipeline of a relatively fixed shape. Therefore, the influence of the distance change between the RF conveying pipeline and a grounding ring, due to the change in shape or position during the process, on the electric field distribution inside the reaction chamber, can be avoided.

The invention provides a multifunctional digital shooting instrument which comprises a base, a support and a shooting board. One end of the support is fixed on the base. The shooting board is fixed at the other end of the support. An ID card recognizer, a stamp recognizer and a shielding cover are disposed in the base. The multifunctional digital shooting instrument has the advantages that the digital shooting instrument can be used to shoot various documents and can read the second generation ID cards and information of stamps with embedded RFID labels, and accordingly legitimacy of user identity and authenticity of stamps can be guaranteed, working efficiency of users are increased greatly, and work complexity of workers is lowered.

The present invention is a stereo PA amplifier that is mounted inside a desktop computer. It is powered by the computer's 12-volt power supply and receives its input via a stereo mini cable from the computer's audio line out. Standard 8-ohm, non-powered speakers are then hooked up directly to the board via its speaker connector board. The volume of the present invention is adjusted by the computer's volume controls. The device eliminates the need for an external stereo amp and external mixer, which thereby reduces the installation time, cost, interconnecting cables, and the space needed for the overall computer system, while at the same time providing quality sound.

The invention relates to a method for strengthening parts structures, comprising the following steps of: configuring a base material, a colloform, a metal form, a glue feeding device and a thermal meltallizing device, wherein the thermal meltallizing device is provided with a melting part and a compressed gas part; coating the base material with the colloform through the glue feeding device; then melting the metal form through the melting part; then blowing the melted metal liquid with heat through the compressed gas in the compressed gas part, atomizing to melted metal granules, injecting the melted metal granules to the colloform to form a metal layer; or mixing or coating the colloform and melted metal granules before reaching the base material through the glue feeding device and the thermal meltallizing device; or spraying the melted metal granules through the thermal melting device on the base material to form a metal layer; then coating or infiltrating the colloform through the glue feeding device on the metal layer or in the metal layer. The invention has the advantages of enhancing the strength of the base material structure.

Disclosed is a method and an apparatus for eliminating radio frequency noise of a mobile terminal. The method comprises the following steps: collecting data in an uplink voice channel, and performing time-frequency transformation on the data; determining whether radio frequency noise exists in the data of the uplink voice channel after the time-frequency transformation; if yes, performing noise elimination processing on the data in the uplink voice channel in a frequency domain. In the present invention, data is collected from the uplink voice channel, and noise elimination processing is performed when it is obtained through analysis that radio frequency noise exists in the data, so that radio frequency interference can be effectively avoided, and the quality of voice calls is ensured.

The invention discloses a differential audio system supporting a single-ended signal and a control method. The system comprises an audio access module and a differential signal processing module, wherein the audio access module comprises a P input end, an N input end, a P output end and an N output end; the differential signal processing module comprises a P input end and an N input end; and the audio access module is used for receiving an audio signal from the external audio equipment and controlling the working state of the N input end of the differential signal processing module, and is also used for converting a single-ended signal into a differential signal when the audio signal is the single-ended signal. By adopting the embodiment of the invention, the differential audio system can support single-ended signal input, and meanwhile, signal loopback and radio frequency interference are avoided.