13 results about "Radio broadcasting" patented technology

A radio receiver includes a radio frequency (RF) receiver circuit to receive a radio broadcast signal, an internet network interface, a display, a memory, a processing circuit, and a client application including instructions for execution by the processing circuit. The client application is configured to determine geographic location information for the radio receiver, determine a radio broadcast available to the radio receiver using the geographic location information, select metadata associated with the radio broadcast available to the radio receiver from metadata stored in the memory, and present information included in the selected metadata using the display in accordance with the received radio broadcast signal.

The present application provides a sound output device with a lamp, which is a new device capable of functioning as a lamp and outputting sound. The sound output device with a lamp includes a lamp portion extending in an axial direction, an antenna portion, a sound output portion, and a control portion. One end and the other end of the antenna portion are connected to one side and the other side of the lamp portion with respect to the central portion in the axial direction. The portion between the one end and the other end of the antenna portion extends in the axial direction and is disposed apart from the lamp portion at the periphery of the lamp portion. The control portion is configured to output sound corresponding to a radio wave of a radio broadcast received by the antenna portion from the sound output portion.

A system is provided for transmitting accurate geospatial position and time using radio transmission without the use of satellite signals. The positioning and timing system uses uncorrelated standard radio broadcast signals. These radio broadcast signals are transmitted from known locations defined by latitude and longitude at assigned frequencies, respectively, and transmit modulated or unmodulated carrier signals, respectively. A reference unit at a known fixed location receives the nearby standard broadcast signal, samples the frequency and content values ​​of the signal, broadcasts the measured frequency and content data approximately simultaneously with a time mark representing the measurement time, and further broadcasts its location in latitude and longitude. A mobile unit at an unknown location to be desired receives the nearby standard broadcast signal, measures the arrival time of the broadcast, and records the time of the measurement.

1. Name of the product subject to this design: Radio (SY-383). 2. Purpose of this design: This design is used for radio broadcast reception and wired and wireless audio playback. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D rendering 1.

A radio broadcast receiver comprising: a memory; and a processor that is coupled to the memory, and, when executing a program stored in the memory, performs operations. The operations include: receiving analog quality information indicating a reception quality of an analog radio based on a broadcast radio including a digital radio and the analog radio; and determining switching of a radio source from one of the broadcast radio and an IP radio to the other of the broadcast radio and the IP radio based on the analog quality information indicating the reception quality of the analog radio.

The invention is suitable for the technical field of aircraft navigation, and provides a radio and vision combined low-altitude multi-mode navigation method and system, and the method comprises the steps: constructing a grid navigation reference network which continuously covers a target area; the fusion navigation beacons continuously broadcast radio broadcast information containing absolute coordinates and identity information of the communication signal towers where the fusion navigation beacons are located outwards; and when the satellite navigation positioning information is unavailable, the aircraft performs preliminary positioning based on the received at least one piece of radio broadcast information, and flies to the site of the fused navigation beacon broadcasting the radio broadcast information. According to the invention, the existing communication signal tower infrastructure is multiplexed to construct the gridding navigation reference network, and when the aircraft is in a complex environment which causes attenuation or failure of satellite navigation signals, the aircraft can be seamlessly switched to radio and visual navigation signals provided by signal tower beacons; the problems of coverage blind areas and monitoring interruption caused by excessive dependence on a single satellite navigation signal are effectively solved.

A method of controlling operation of an end device using a one-way radio broadcast includes sending an encrypted message from a client application of a computing device to a first network server, sending the encrypted message from the first network server to a second server included with radio broadcast automation equipment, transmitting the encrypted message in a radio broadcast signal using one or more radio broadcast transmitters, receiving the radio broadcast signal at an end device, and decrypting the encrypted message using the end device. The encrypted message includes control information to control operation of the end device.

A radio system includes an audio device, and a control device operatively connected to the audio device to store a first radio frequency of the audio device as a preset frequency, wherein the control device may be configured to determine whether a second broadcast signal received through a second radio frequency is equal to a first broadcast signal received through the first radio frequency stored in a preset list when the second radio frequency of the audio device is added as the preset frequency, generate the preset list including the first and second radio frequencies when the first broadcast signal is different from the second broadcast signal, and generate the preset list including the first or second radio frequency when the first and second broadcast signals are broadcast signals of a same radio broadcast.

Systems and methods for synchronizing a portion of the radio broadcast with a portion of a TV broadcast and switching from TV to radio broadcast upon detecting a triggering condition are described. A determination is made if radio and TV broadcasters are within a local transmission range (e.g., connected via a wire), to broadcast live event feeds directly to each other. If broadcasters are within local transmission range, then the radio broadcast's feed may be multiplexed with the audio feed of the TV broadcast. If they are farther apart, then their clocks may be synchronized, and the corresponding audio packets of the radio and TV broadcasts may be multiplexed together based on a time stamp from the synchronized clocks and delivered to the client device. Upon detecting the triggering condition, the client device may switch from the TV broadcast to the synchronized radio broadcast.

The invention relates to the technical field of voice recognition, and discloses a voiceprint recognition method and system for a vehicle-mounted child safety seat, and the method comprises the steps: synchronously collecting the spatial radio frequency signal intensity of a microphone audio signal and a radio broadcast signal of a preset frequency band; generating an interference mark for the microphone audio signal of which the intensity exceeds a preset intensity threshold value; inputting the microphone audio signal with the interference mark into a pre-trained voiceprint recognition model; carrying out feature suppression processing on harmonic interference; generating a voiceprint judgment score; and when the voiceprint judgment score is higher than a preset compliance threshold, generating a final control authorization instruction. According to the invention, the spatial radio frequency signal intensity is introduced as the perception dimension, the corresponding interference mark is generated, and then the voiceprint recognition model is used for carrying out feature suppression and score judgment on the interference mark, so that the situation that the interfered child imitation voice is misjudged as a compliant adult instruction during voiceprint verification is effectively avoided.

A method performed by at an importer-exporter of an it1-band on-channel (IBOC) digital radio broadcasting system comprises: receiving, from a first audio client, first protocol data units (PDUs) (first PDUs) of encoded main audio and that include first sequence numbers that progress in a first order; sending the first PDUs for transmission over a logical channel of an IBOC waveform; receiving, from a second audio client, second PDUs of encoded non-main audio and that include second sequence numbers; aligning the second PDUs to the first PDUs by aligning the second sequence numbers to the fust sequence numbers, to produce aligned second PDUs; and switching to sending the aligned second PDUs for transmission over the logical channel in place of the first PDUs such that the second sequence numbers of the aligned second PDUs after switching maintain the first order of the first sequence numbers as established prior to switching.

The invention belongs to the technical field of radio broadcast communication, and relates to a method and a system for suppressing amplitude modulation broadcast audio distortion. The method comprises the following steps: constructing a transmitter predistortion system; generating a training sequence signal; performing complex number field expansion on the input real number field audio signal; acquiring an output signal of the power amplifier by using a feedback channel, and demodulating to obtain a feedback complex baseband signal; establishing a model of the power amplifier by using the memory polynomial model, and extracting pre-distortion parameters; and updating the lookup table in the predistorter. According to the invention, the problem of feedback signal amplitude drop caused by phase desynchrony in traditional real number coherent demodulation is solved, and the demodulation precision is improved; a memory polynomial model is adopted, amplitude and frequency response distortion is corrected, and linear and nonlinear distortion of a transmitter power amplifier is effectively compensated; the training sequence is utilized to ensure that model parameters can cover the whole dynamic range and working frequency band of the power amplifier; the audio harmonic distortion can be obviously reduced, and the frequency response flatness is improved.

The utility model relates to the technical field of mobile equipment, and discloses a flip phone. The flip mobile phone provided by the utility model comprises a mobile phone body, the mobile phone body comprises a first flip cover, a second flip cover and a rotating shaft, and the first flip cover is rotatably connected with the second flip cover through the rotating shaft; the communication device is arranged on the first flip cover and / or the second flip cover, the communication device comprises a communication antenna, a radio broadcast signal processing module and a communication signal processing module, and at least part of the communication antenna is arranged on one side of the rotating shaft; the radio broadcast signal processing module and the communication signal processing module are electrically connected with the part, close to the rotating shaft, of the communication antenna. According to the flip phone, the radio broadcast signal processing module and the communication signal processing module are electrically connected with the part, close to the rotating shaft, of the communication antenna, so that noise caused by multiplexing of the communication antenna by the radio broadcast signal processing module and the communication signal processing module is reduced; the problem that mobile communication is greatly interfered due to multiplexing of a communication antenna is solved.