49 results about "Remote broadcast" patented technology

The invention provides a live-recorded broadcast interaction classroom system comprising a main classroom control device, an auxiliary classroom control device, and a remote broadcast instruction control device. The main classroom control device is used for acquiring teaching picture data of a main classroom, generating a main classroom teaching audio and video stream, sending the main classroom teaching audio and video stream to the auxiliary classroom control device, receiving and decoding an auxiliary classroom teaching audio and video stream from the auxiliary classroom control device, receiving control information from the remote broadcast instruction control device, performing processing operation corresponding to the control information, and sending the processed main classroom teaching audio and video stream to the remote broadcast instruction control device. The auxiliary classroom control device is used for acquiring teaching picture data of an auxiliary classroom and generating an auxiliary classroom teaching audio and video stream. The remote broadcast instruction control device is used for sending control information to the main classroom control device and receiving the processed main classroom teaching audio and video stream from the main classroom control device.

The invention discloses a smart city management system based on street lamps. The system is characterized by comprising a user terminal, a server and street lamps, the user terminal and the street lamps communicate with the server through a network, and the server comprises an illumination management unit, a city monitoring unit, an environment monitoring unit, an information pushing unit, a remote broadcasting unit, an alarm unit, a video monitoring unit, a multi-dimensional workbench unit, a third-party platform unit, a data sorting and analyzing unit and a database. According to the invention, the street lamps are taken as the acquisition end of basic data, a large amount of data is acquired, and then the data are correspondingly analyzed and processed by the server, and then relevant data are output, so that a large amount of data reference is provided for smart city construction, the street lamps can be controlled more intelligently, and the energy consumption is reduced to the maximum extent.

A mobile communication terminal allows a user to receive broadcast programming. A separate recording unit, which can be remote from the communication terminal, records that programming. One or more signals from the mobile terminal identify the broadcast frequency to which the mobile terminal is tuned and cause the recording unit to tune to the identified broadcast frequency. The signals from the mobile terminal also cause the recording unit to record at least a portion of a program being broadcast on the frequency to which the mobile terminal is tuned. The recording unit may buffer portions of broadcast programming being received on the identified frequency. A portion of the buffer contents can subsequently be transmitted to the mobile terminal, permitting the terminal user to replay the portion and identify a start point for the broadcast program. A signal from the mobile terminal can also cause the recording unit to automatically identify the start point in the buffer contents. After the start point is identified by the user or automatically by the recording unit, the recording unit is able to record substantially an entire broadcast program that is identified by the user after the program begins.

A local CPE broadcasts incoming call information to at least one remote CPE. Before or after at least one ring tone is received, the local CPE is taken off-hook. An incoming voice message is received, and the incoming voice message is broadcast over a communications network to the remote CPE. Alternatively, incoming caller data is received, a corresponding voice message is determined as a function of at least a portion of the incoming caller data, and the voice message is broadcast over a communications network to the remote CPE. As a further alternative, the caller data is broadcast over the communications network, and the corresponding voice message is determined by the remote CPE. As yet another alternative, incoming call information is announced using on-hook customer premises equipment (CPE). An indication of an incoming CPE alerting signal (CAS) tone is received, a frequency shift keying (FSK) signal is detected as a result of receiving the indication. A corresponding voice message is determined as a function of at least a portion of the FSK signal, and the voice message is announced.

A frequency compander for improving the frequency response of a telephone line when used for remote broadcasting. The inventive device comprises an encoder for compressing the frequency spectrum of an audio signal and a decoder for expanding the signal back to its original spectrum. Preferably the encoder comprises: an anti-aliasing filter; an A/D converter for digitizing incoming audio; a DSP for compressing the audio; and a D/A converter for outputting compressed audio to the phone line. The decoder comprises: an anti-aliasing filter; an A/D converter for digitizing the incoming compressed signal; a DSP for restoring the original audio; and a D/A converter for outputting program audio. In a preferred embodiment, encoding and decoding are performed in the frequency domain. In another preferred embodiment, encoding and decoding are performed in the time domain using trigonometric transformations.

The invention discloses a fan fault alarm information remote broadcast method based on coding. The method comprises the following steps of uniformly converting fault information into corresponding float measuring point values according to a coding rule; packaging the float measuring point value into a message mode and transmitting the message mode to the client; and enabling the client to analyzethe float measuring point value in the message and convert the float measuring point value into specific fault information. According to the invention, the timeliness and security of the fault information data are ensured, the network resource cost is saved, and the requirement of using the fault information by multiple users at local and remote ends in time and independently is met.

The key ideal of invention is: the central radio digital TV broadcast transmitter uses spatial transmission diversity technique to divide video transmission stream into two-way signals that are transmitted by two antennas; the broadcast station subsystem firstly processes the video data into video transmission stream; the central radio digital broadcast transmitter makes process for the video transmission stream, which including the transmission process for signals having spatial transmission diversity modulation function, to generate two-way signals; the first way signals are transmitted by using its own antenna, and the second way signals are transmitted by the transmitting module of a remote end. When the user end receives two way signals, it makes receiving process and baseband backward process for the signals having spatial transmission diversity demodulation function to get video data.

The invention provides a multifunctional smart street lamp system for a smart city. The system comprises a smart rod cloud platform which is connected with and controls a smart street lamp terminal through a network, the smart rod cloud platform is provided with intelligent applications, and the intelligent applications comprise intelligent illumination, intelligent monitoring, intelligent environment, and intelligent emergency. The intelligent street lamp terminal comprises intelligent lighting equipment and external equipment, the intelligent lighting equipment is used for turning on lamplight in foggy days, controlling the lamplight in different time periods and distinguishing real-time weather brightness and haze weather information through meteorological acquisition, and when the visibility or the brightness is relatively low, a street lamp is turned on intelligently; the external equipment collects urban environment information in real time through the Internet of Things monitoring equipment, integration of functional modules such as smart traffic, smart monitoring, information issuing, remote broadcasting and smart emergency can be achieved, and data linkage interaction between the platform and all intelligent application systems is achieved.

Disclosed is a control method of a voice alarm device. The control method of a voice alarm device comprises the steps of: analyzing a signal sensed by at least one sensor provided in a ship to determine whether an event relating to a ship accident occurs; if an event occurs, determining a broadcasting method of a voice alarm; and performing a voice alarm using at least one speaker provided in the ship according to the determined broadcasting method, wherein the broadcasting method of a voice alarm includes at least one of a manual broadcasting mode in which a voice alarm is performed via a microphone provided in the ship on the basis of an inputted voice, an automatic broadcasting mode in which a voice alarm is performed on the basis of data that is already stored in a storage part of the ship, and a remote broadcasting mode in which a voice alarm is performed by a remote terminal device on the basis of an inputted voice.

The invention discloses a 3G remote broadcast system which comprises a remote broadcast platform. The system is characterized in that: the remote broadcast platform is connected with a 3G intelligent broadcast controller through a 3G wireless network, wherein the each 3G intelligent broadcast controller comprises: a 3G module, a number identification module, a 3G converting WIFI module; the 3G intelligent broadcast controller is connected with power amplifier equipment, a display and a keyboard. The system possesses stability, practicality, economy, compatibility and flexibility. An utilization rate of the equipment is high. Usage is convenient and an anti-interference ability of the system is strong.

The invention discloses a remote broadcast level video camera high-definition lens control method. The method comprises the following steps: (1) receiving a lens zooming value, a focusing value and an aperture value in analog quantity forms, a view field zooming value and a color gain value in digital quantity forms, and a mode selection signal; (2) performing AD sampling on analog quantities; (3) framing each quantity represented in the digital quantity form based on modes and bits according to the mode selection signal to obtain a frame of control command, and transmitting to the control command to the control end of a broadcast level lens; and (4) performing frame extraction on the control command to obtain each digital quantity, performing biasing and voltage transformation on the lens zooming value, the focusing value and the aperture value represented in the digital quantity forms obtained by frame extraction twice to obtain corresponding analog quantities, and transmitting the corresponding analog quantities to the server side of the broadcast level lens for servo control, and reframing the view field zooming value and the color gain value represented in the digital quantity forms obtained by frame extraction according to a broadcast level lens communication protocol, and transmitting the reframed view field zooming value and color gain value to the server side of the broadcast level lens for servo control.

The invention discloses a visual VR director system for meeting place control, and relates to the field of VR directors. The system comprises a demultiplexing module, an audio and video caching module, a video decoding module, a monitoring module, a switching logic module and a plug flow multiplexing module, and comprises the following operation steps: S1 inputting rtmp pull flow into the demultiplexing module, and then pulling 8Krtmp live broadcast flow by the demultiplexing module and demultiplexing the 8Krtmp live broadcast flow; and S2 importing the data demultiplexed in the step S1 into the audio and video caching module, reading a corresponding video from a cache by utilizing the audio and video caching module, and then decoding. According to the invention, the demultiplexing moduleis added to zoom the original 8k video resolution to 2K or lower video resolution for preview switching; the cloud deployment reduces the front-end hardware cost, reduces the early-stage manufacturingdifficulty, enables each video transmission to be stably monitored through the arrangement of the monitoring module, greatly guarantees the remote broadcast guide precision, and solves a problem thatthe playing is not convenient caused by a live broadcast accident.

The present invention relates to the technical field of remote broadcasting, and discloses an effective intelligent broadcasting system, comprising: a receiving module for receiving broadcast signals; a judging module for judging whether everyone at the current broadcasting terminal has received the broadcasting signal; A module, configured to separately send the broadcast signal to the smart terminal of the person who has not received the broadcast signal when it is judged that the current broadcast terminal has not received the broadcast signal, thereby improving the efficiency of broadcasting.