Abstract:
The present invention discloses a data transmission method, and a data transmission device, which relates to the field of wireless communication technology to solve the problem of low reliability in audio data transmission. The data transmission method is applied to a first device and comprises: receiving a first data group transmitted by a second device during a first time interval, the first data group comprising a first initial data group and/or a first retransmission data group, wherein the first initial data group comprises one or more first data packets that have not been transmitted by the second device before the first time interval, and the first retransmission data group comprises one or more second data packets comprising at least a portion of one or more data packets transmitted by the second device before the first time interval that were not successfully received by the first device; generating a target mapping table based on a reception status of the first data group and a reception status of the data packets transmitted by the second device before the first time interval, wherein the reception status comprises a failed reception; and transmitting the target mapping table to the second device within the first time interval. In this way, the reliability of the audio data transmission can be improved.
Abstract:
This application discloses a hot-press molding formaldehyde-free stone-plastic composite plate, which can be used as a plate, a ceiling, a door panel, a wall surface, a decorative sheet, and others in the field, and comprises a PVC material composite surface layer as a surface layer, a stone-plastic material layer as a middle layer and a PVC material bottom layer as a bottom layer; wherein the PVC material composite surface layer, the stone-plastic material layer and the PVC material bottom layer are sequentially arranged from a surface side to a bottom side and hot-press molded into a plate body; the finished products is good in stability, less deformation, waterproof, fire-prevent, anti-skid, flame retardant, wear-resisting, shock-resistant, high-temperature-resistant, long in life, formaldehyde-free, environmental friendly, safe etc.; the periphery side of the plate body is provided with a snap-fit connection structure easy to assemble and disassemble; the practicability of the product is greatly improved.
Abstract:
Various arrangements for remotely manipulating a wire may be presented. A wire pilot may be presented that is configured to be coupled with the wire and to move in response to a magnetic field created by a remote guide when the wire pilot is within a wall and the remote guide is external to the wall. The remote guide may include a magnetic field generator configured to create the magnetic field and a metal detector configured to detect wires through a wall.
Abstract:
Various arrangements for remotely manipulating a wire may be presented. A wire pilot may be presented that is configured to be coupled with the wire and to move in response to a magnetic field created by a remote guide when the wire pilot is within a wall and the remote guide is external to the wall. The remote guide may include a magnetic field generator configured to create the magnetic field and a metal detector configured to detect wires through a wall.
Abstract:
A M-bridge class-D audio amplifier for portable applications and a method of driving a three-wire audio output device comprises a stereo signal source producing first and second input stereo digital signals; circuitry adapted to receive the first and second input stereo digital signals and produce three stereo signals comprising a first, second, and third digital signal, wherein the three stereo signals generate PWM waves comprising a first, second, and third digital signal PWM wave; exactly three pairs of MOSFETs driven by the first, second, and third digital signal PWM waves respectively; and a three-wire speaker system comprising a first wire driven by the first digital signal PWM wave through the first pair of MOSFETs; a second wire driven by the second digital signal PWM wave through the second pair of MOSFETs; and a common wire driven by the third digital signal PWM wave through the third pair of MOSFETs.
Abstract:
The present invention relates to 3,4-disubstituted coumarin and quinolone derivatives and processes for their preparation. The invention also related to methods for treating infection of Hepatitis C virus by administering a 3,4-disubstituted coumarin or quinolone derivative.
Abstract:
An electrical connector assembly (100) for mating with a complementary connector and connecting with a cable includes an electrical connector (2) and a protecting means (4). The electrical connector includes an insulative housing (20) formed with a latch (206), and a number of contact terminals (22) mounted in the insulative housing. The protecting means partially accommodates the insulative housing and is formed with a resilient beam (440). The latch of the electrical connector is disposed beneath the resilient beam. The protecting means is formed with a blocking portion (424), and the insulative housing defines a notch (204). The blocking portion is confined in the notch.
Abstract:
A thermal power generation apparatus comprises a boiler (15) and multiple turbine sets for high, intermediate and lower steam pressure operation. Steam exhausted from the high pressure turbine (HP), and reduced in both pressure and temperature, is returned to a reheater (19) for reheating. The reheated steam is then passed to a intermediate pressure turbine (IP). It is desirable to control the temperature of steam entering the intermediate pressure turbine (IP). The invention provides a system for effecting temperature control of the reheater stream in a thermal power plant. The system includes a reheater conduit (10, 21) adapted to define at least a part of a reheat flow path for steam between an exhaust of a high pressure turbine system (HP) and an inlet of a reheater system (19). The system further includes an indirect water/steam heat exchanger (B) having a heat exchange portion within the reheat flow path and defining a water flow path means adapted to receive and circulate feed water. The feed water may be taken from take off points (A, D) in the primary feed water stream.
Abstract:
A cable assembly (1) comprises an insulative housing (2) having a body portion with a front surface and a pair of upper and lower tongue portions (212, 222) respectively extending forwardly form a top and bottom sides of the front surface of the body portion; the body portion defines a receiving room therein. A printed circuit board (3) is disposed in the receiving room of the body portion of the housing and defines a mating portion (31) extending forwardly from the front surface of the housing and disposed between the upper and lower tongue portions, a terminating portion (32) opposite to the mating portion and a connecting portion (33) connected with the mating portion and the terminating portion. The connecting portion and the terminating portion are received in the receiving room. A cable (4) is terminated to the terminating portion of the printed circuit board and extending out of the housing. And, a shielding member (5) received in the receiving room and surrounding the printed circuit board (3).