396 results about "Wireless broadcasting" patented technology

An image transfer system includes a printer connected to a network and an information terminal device, which transfers photographed image data to the printer, the information terminal device having a wireless broadcasting device, which broadcasts to the printer, and the printer having a wireless response device, which responds at least own IP address responsive to the wireless broadcasting, the information terminal device further including an IP address obtaining device, a display device, and a wireless sending device, and the printer further including a connection start request wireless sending device and a wireless connection establishing device.

The method comprises: after sequentially making RS coding and byte interlace, LDPC coding, bit interlace and constellation mapping for the upper layer data, the acquired data symbol, discrete pilot frequency and the continuous polite frequency are multiply connected to form OFDM polite frequency and make scrambling; generating OFDM symbol through IFFT transformation, and after forming time slot through inserting frame head, they are connected to form signal frame of physical layer; after making low pass filter and quadrature up-conversion for the physical layer signal frame, they are sent out. The invention can provide radio broadcast such as audio, video and multicast for mobile, fixed and portable receiver. The system thereof uses micro wave and large-scale IC technology. The method adopts OFDM of LDPC solution.

The invention discloses a mobile internet access system based on wireless signal identification and an implementation method. The mobile internet access system comprises an access controller with the wireless signal identification, an access unit, a wireless identity identification device and a mobile terminal, wherein the access unit sends a wireless broadcast message containing own identification information periodically; the mobile terminal detects the wireless broadcast message of the access unit and then initiates a door-opening request after the wireless broadcast message is detected; and the access system receives the door-opening request of the mobile terminal, carries out right judgment and executes corresponding access operation according to the judgment result. The mobile internet access system based on wireless signal identification and the implementation method disclosed by the invention have the advantages that a user can use the access system only by carrying the mobile terminal without needing to swipe cards or adopting other means such as biological identity identification, the user also does not need to carry out physical contacting interactive operation with the access system, so that the use of the user is more convenient; and compared with the card identification system, a large amount of cost for cards is saved.

The invention relates to a wireless reliable broadcasting method based on a random linear network code. The wireless reliable broadcasting method comprises two stages: broadcasting an original data packet and retransmitting a coding packet, namely, performing a linear network code on a lost data packet, and retransmitting the coding packet; and respectively solving each lost original data packet by utilizing a Gaussian elimination method after each receiving node receives the coding packets with the preset amount. The method in the invention can be used for overcoming the defect that a traditional retransmission method is not suitable for point-to-multipoint broadcasting scene and also prevents limitation that performance is not stable and system expense is large in the retransmission method based on XOR (exclusive OR) coding, according to the wireless reliable broadcasting method based on the random linear network code, disclosed by the invention, linear network code and retransmission is carried out on the lost original data packet of each receiving node through lower coding algorithm complexity and system expense; and the receiving node can be used for solving the original data packet from the coding packet by utilizing a solution of a linear equation system, and the retransmission performance of wireless broadcast is modified, and the average retransmission times is reduced. The wireless reliable broadcasting method disclosed by the invention is stable, is not influenced by data package loss distribution and has good promotion application prospect.

The invention relates to a radio broadcasting terminal system. The invention provides a self-monitoring type radio broadcasting terminal system, wherein, when sending a test audio, the studio equipment of the system feeds back outdoor audio to the system through an audio collecting device, the system judges the feedback information, thereby the studio equipment is self-monitored partly; when the self-monitoring is started, the system cuts off urban power, which is supplied by the storge battery of the UPS power supply, the self-monitoring of the UPS power supply is started. The self-monitoring type radio broadcasting terminal system of the invention can solve the problems of bad tone quality, easy to be interfered, complex maintenance management, bad interaction performance, unable self-monitoring, improves the performance of the system and reduces hidden danger.

A wireless control system and a method for controlling devices (e.g., luminaires, dimmers, effects devices, stepper motors, and the like) used in entertainment lighting applications is disclosed. Embodiments disclose a modular transceiver utilizing a wireless broadcasting transmission technique and a wireless control system where an interface between a controller and controlled devices is facilitated using the transceivers.

A method is provided for transmitting in-band signaling information in a wireless broadcasting system that transmits broadcast service data through a plurality of data Physical Layer Pipes (PLPs) constituting a frame. Non-PLP signaling information is included in a data PLP for a particular broadcast service and the data PLP is transmitted through a current frame, when no data PLP for the particular broadcast service is transmitted in at least one frame to be transmitted within a maximum schedulable period NMAX from a time the current frame is transmitted. The non-PLP signaling information indicates that no data PLP for the particular broadcast service is transmitted within the maximum schedulable period.

The invention discloses an intelligent electric meter and out-of-meter circuit breaker automatic association pairing method. The intelligent electric meter and out-of-meter circuit breaker automatic association pairing method comprises the following steps that an intelligent electric meter and an out-of-meter circuit breaker are initialized respectively, the intelligent electric meter is started to automatically scan peripheral Bluetooth devices through a Bluetooth module to obtain a device list, and meanwhile the out-of-meter circuit breaker enters into a wireless broadcast mode so that the out-of-meter circuit breaker is discovered by the intelligent electric meter; S2, the intelligent electric meter and the out-of-meter circuit breaker are linked to confirm a starting detection state; and S3, the intelligent electric meter and the out-of-meter circuit breaker are linked to confirm a closing detection state. By using the intelligent electric meter and out-of-meter circuit breaker automatic association pairing method of the invention, in a pairing process, two parties carry out identity authentication through a Bluetooth protocol or an implicit custom protocol, and simultaneously,a related encryption function is added into the protocol so that the protocol has relatively high security.