Abstract: The present invention discloses a transmitter, a receiver, and a method for receiving and transmitting a radio frequency signal, and relates to the field of radio communications technologies, which can perform carrier recovery and generation at a front end of a radio frequency circuit, thereby reducing a running cost of a baseband chip. The method includes: generating, by an amplitude discriminator/phase detector according to an intermediate-frequency analog signal, a signal amplitude pulse signal/signal phase pulse signal that is not corrected; generating, by a bit error matrix corrector, an amplitude/phase correction control signal; correcting, by the amplitude discriminator/phase detector, the signal amplitude pulse signal/signal phase pulse signal according to the amplitude/phase correction control signal; and converting, by an amplitude code generator/phase code generator, a corrected pulse signal into a corresponding digital code.

Abstract: The present disclosure provides a method, includes: a first stepped-impedance transmission line configured to receive a first signal of a first differential signal; a second stepped-impedance transmission line configured to receive a second signal of the first differential signal, where the first stepped-impedance transmission line and the second stepped-impedance transmission line superpose the first signal of the first differential signal on the second signal of the first differential signal to obtain a first frequency multiplied signal; a first inverse stepped-impedance transmission line configured to be inversely ground-coupled with the first stepped-impedance transmission line and grounded at an end near an output end of the first stepped-impedance transmission line; a second inverse stepped-impedance transmission line configured to be inversely ground-coupled with the second stepped-impedance transmission line and grounded at an end near an output end of the second stepped-impedance transmission line.

Abstract: A method as well as new intermediates for preparing Ulipristal acetate (a compound I) and a method for preparing the new intermediates are provided. The intermediate in a constitutional formula IV is conductive to reacting with methyl lithium or methyl Grignard reagent, a protective group is easy to be removed after a reaction, side reactions are few, a mid-term treatment is simple, the reagents used are cheap, costs are low and a yield is high, if a compound in a constitutional formula V is obtained by the reaction of a compound in a constitutional formula III and the intermediate in the constitutional formula IV, the yield of a two-step reaction is 75%, a purity is above 98%. wherein R is defined in the specification.

Abstract: The present invention discloses a transmitter, a receiver, and a method for receiving and transmitting a radio frequency signal, and relates to the field of radio communications technologies, which can perform carrier recovery and generation at a front end of a radio frequency circuit, thereby reducing a running cost of a baseband chip. The method includes: generating, by an amplitude discriminator/phase detector according to an intermediate-frequency analog signal, a signal amplitude pulse signal/signal phase pulse signal that is not corrected; generating, by a bit error matrix corrector, an amplitude/phase correction control signal; correcting, by the amplitude discriminator/phase detector, the signal amplitude pulse signal/signal phase pulse signal according to the amplitude/phase correction control signal; and converting, by an amplitude code generator/phase code generator, a corrected pulse signal into a corresponding digital code.

Abstract: Disclosed are systems, apparatus, devices, methods, media, products, and other implementations, including a method that includes receiving, at a server, beacon data indicative of a location of an asset tag device, the beacon data determined based on one or more beacon signals received at the asset tag device from one or more transmitters that is each associated with a respective one of group values identifying a corresponding one of a plurality of assigned transmitter groups comprising the respective each of the one or more transmitters. The method also includes determining, at the server, the location of the asset tag device based on the beacon data received at the server from the asset tag device and on the group values respectively associated with the one or more transmitters from which the one or more beacon signals received at the asset tag device were transmitted.

Abstract: 3D image data can be modified based on user preference data received from a user. The user preference data may be received at a first device and used to adjust 3D image data generated by the first device for presentation by a display device, or the first device may receive the user preference data and transmit it to a display device such that the display device may adjust the 3D image data based on the user preference data. The 3D image data may be adjusted based on user preference data to support presentation of 3D imagery on the display device in a manner desired by a user. 3D user viewing preferences may include an amount of pop-out effect in images, a stereo baseline of images, a depth range of images, a spatial distribution of images, a degree of depth sharpness in images, or specification of a user's dominant eye.

Abstract: Disclosed are systems, apparatus, devices, methods, media, products, and other implementations, including a method that includes receiving, at a server, beacon data indicative of a location of an asset tag device, the beacon data determined based on one or more beacon signals received at the asset tag device from one or more transmitters that is each associated with a respective one of group values identifying a corresponding one of a plurality of assigned transmitter groups comprising the respective each of the one or more transmitters. The method also includes determining, at the server, the location of the asset tag device based on the beacon data received at the server from the asset tag device and on the group values respectively associated with the one or more transmitters from which the one or more beacon signals received at the asset tag device were transmitted.

Abstract: The disclosure provides a method, apparatus, and computer program product directed towards enabling internet protocol (IP) connectivity across multi-hop wireless networks. A virtual adapter is generated to facilitate creating a virtual link layer between a virtual link layer node and at least one other virtual link layer node. The virtual link layer is then interfaced with an IP layer via the virtual adapter, such that data transmitted over the virtual link layer is accessible to the IP layer via the virtual adapter.

Abstract: An apparatus, system, and method utilizing multi-description coding (MDC) and one or more cooperative helper nodes to send streaming content on an uplink to a client over multiple paths. The client receives the multiple descriptions and aggregates them together to ideally obtain the original content at its original quality; however, if one or more of the descriptions is lost in the transmission, then the entire content can be generated from the remaining one or more descriptions that did arrive successfully.

Abstract: A method, system, and computer program product for providing feedback over a multiple path network is provided. A first device sends a transmissions to a second device over at least two different paths of the network. Using information collected as a result of receiving the transmissions, the second device aggregates data regarding the performance of each of the paths together into a feedback message. The second device then sends this feedback message to the first device over one path of the network. The first device uses the data in the feedback message in its calculations for determining the relative performance of each path. The amount of traffic sent along each path is adjusted as appropriate, based on these calculations.

Abstract: A method as well as new intermediates for preparing Ulipristal acetate (a compound I) and a method for preparing the new intermediates are provided. The intermediate in a constitutional formula IV is conductive to reacting with methyl lithium or methyl Grignard reagent, a protective group is easy to be removed after a reaction, side reactions are few, a mid-term treatment is simple, the reagents used are cheap, costs are low and a yield is high, if a compound in a constitutional formula V is obtained by the reaction of a compound in a constitutional formula III and the intermediate in the constitutional formula IV, the yield of a two-step reaction is 75%, a purity is above 98%. wherein R is defined in the specification.

Abstract: In some aspects, a non-gateway node transmits an internet route request to neighbor nodes and receives, from a gateway node, a response message including an address of the gateway node and a gateway indicator. The non-gateway node sets a gateway pointer equal to this address. In other aspects, a gateway node receives an internet route request from neighbor nodes and transmits, to the neighbor nodes, a response message including an address of the gateway node and a gateway indicator. In additional aspects, a non-gateway node receives, from gateway nodes on the network, an announcement of internet connectivity that includes address of the gateway nodes. The non-gateway node adds these addresses to a list of potential gateways. When the non-gateway nodes receives packets for transmission to an internet destination, it selects a gateway address from the list, and transmits the packets to a destination gateway associated with the gateway address.

Abstract: In an example, a method includes generating a test frame of video data having a first format, and rendering the test frame of video data to a frame buffer, wherein the frame buffer is configured to store video data in a second format. The method also includes reading, from the frame buffer, a return frame of video data, wherein the return frame of video data comprises the video data of the test frame formatted in the second format, and determining the second format based on a comparison of the test frame having the first format and the return frame having the second format.

Abstract: The present disclosure provides a method, includes: a first stepped-impedance transmission line configured to receive a first signal of a first differential signal; a second stepped-impedance transmission line configured to receive a second signal of the first differential signal, where the first stepped-impedance transmission line and the second stepped-impedance transmission line superpose the first signal of the first differential signal on the second signal of the first differential signal to obtain a first frequency multiplied signal; a first inverse stepped-impedance transmission line configured to be inversely ground-coupled with the first stepped-impedance transmission line and grounded at an end near an output end of the first stepped-impedance transmission line; a second inverse stepped-impedance transmission line configured to be inversely ground-coupled with the second stepped-impedance transmission line and grounded at an end near an output end of the second stepped-impedance transmission line.

Abstract: In an example, a method includes generating a test frame of video data having a first format, and rendering the test frame of video data to a frame buffer, wherein the frame buffer is configured to store video data in a second format. The method also includes reading, from the frame buffer, a return frame of video data, wherein the return frame of video data comprises the video data of the test frame formatted in the second format, and determining the second format based on a comparison of the test frame having the first format and the return frame having the second format.

Abstract: Methods, systems, and devices are disclosed for implementing Internet Protocol (IP) connectivity over a service-oriented architecture (SOA) bus implemented by a peer-to-peer network. At a first device, a first IP service is advertised over the SOA bus, and a second IP service advertised by a second device over the SOA bus is discovered. The first device may transmit at least a first IP packet to the second device by remotely invoking the second IP service of the second device over the SOA bus. The first device may receive at least a second IP packet from the second device over the SOA bus through an invocation of the first IP service by the second device.

Abstract: A method, system, and computer program product for providing feedback over a multiple path network is provided. A first device sends a transmissions to a second device over at least two different paths of the network. Using information collected as a result of receiving the transmissions, the second device aggregates data regarding the performance of each of the paths together into a feedback message. The second device then sends this feedback message to the first device over one path of the network. The first device uses the data in the feedback message in its calculations for determining the relative performance of each path. The amount of traffic sent along each path is adjusted as appropriate, based on these calculations.

Abstract: An apparatus, system, method, and computer program product for streaming 3D content from a wireless device to a remote 3D display for the viewing of the 3D content on a larger screen. In some aspects, a wireless streaming server may encode 3D motion picture content in a certain format, where each image frame includes a 2D view concatenated side-by-side with a complementary frame of depth information. The combination of the 2D view and the depth information are capable of being processed by a client display to generate a stereoscopic image representing a 3D view.

Abstract: An apparatus, system, and method utilizing multi-description coding (MDC) and one or more cooperative helper nodes to send streaming content on an uplink to a client over multiple paths. The client receives the multiple descriptions and aggregates them together to ideally obtain the original content at its original quality; however, if one or more of the descriptions is lost in the transmission, then the entire content can be generated from the remaining one or more descriptions that did arrive successfully.

Abstract: An end-to-end multimedia streaming system can include a streaming server and a destination. The streaming server includes a content source, which sends multiple description coding-encoded content over a plurality of paths to the destination. The destination includes an aggregator for aggregating the descriptions from the multiple paths, decoding and recombining them to recover the content. A feedback sender at the destination generates traffic performance variables based on the channel conditions of the multiple paths, and sends these variables to a feedback receiver at the streaming server. The feedback receiver utilizes the feedback information to make adjustments to the transmissions of the content, and to synchronize the transmissions over the multiple paths.