32results about How to "Play clearly" patented technology

The invention discloses a self-adaptive bandwidth transmitting and playing method based on audio and video frequency synchronization, and relates to a video data transmission processing technology of a public mobile communication device. The method comprises the steps: generating a video stream data according to an H.264 coding; dynamically adjusting size of transmitted data quantity in real time according to the condition of current wireless bandwidth, transmitting the data to an outer network server via a wireless network; receiving and displaying audio and video data received by a client; creating an audio and video data buffer area, displaying and playing the video by a certain playing strategy according to the speed of receiving data quantity, and ensuring synchronization of the real-time video and audio frequency through an audio and video synchronization algorithm in an entire process. According to the method disclosed by the invention, operation and maintenance efficiency is improved; manpower cost is reduced; the video can be detected in real time; the problem of vibration of the wireless bandwidth is solved; the audio and video are synchronous, and the method has the advantages of strong generality, strong transportability and flexible expansibility.

The invention discloses a VR streaming media playing method and device based on a visual angle. The method comprises the steps: carrying out the coding of a plurality of video images through a VR panoramic video hierarchical coding technology based on a visual angle slice; expanding the VR panoramic video streaming media protocol of the visual angle slice based on an HLS protocol, and transmittinga corresponding target video picture according to the user visual area; splicing and restoring the video streams corresponding to the visual angle slices into a full-frame video picture, and finallyrendering the full-frame video picture to VR display equipment. By adoption of the VR streaming media playing method based on the visual angle, the VR panoramic video transmission bandwidth can be greatly reduced, the VR panoramic video can be quickly played in the existing network, meanwhile, the decoding scale requirement of a user side is reduced, VR equipment only supporting 4K decoding can have the 8K VR panoramic video decoding capability, and a VR panoramic video picture with higher quality can be obtained in the current mainstream VR equipment.

The invention relates to an interpolation frame generation method and device, electronic equipment and a computer readable storage medium. The method comprises the following steps: acquiring a first frame and a second frame included in an original video, wherein the first frame and the second frame are spaced by a preset number of frames; performing motion estimation on the first frame and the second frame to obtain a first motion vector between the first frame and the second frame; determining a first frame rate between the first frame and the second frame based on the first motion vector between the first frame and the second frame; and generating an interpolation frame between the first frame and the second frame based on the first frame rate and the first motion vector. According to the interpolation frame generation method and device, the electronic equipment and the computer readable storage medium, the accuracy of the generated interpolation frame can be improved.

The invention provides an IPTV multi-split-screen coding playing control method and device, and the method comprises the steps: receiving a plurality of media streams, carrying out the split-screen coding of videos in the plurality of media streams, enabling all videos after the split-screen coding to be compounded into one media source, and outputting the media source to a streaming media server;playing the video in the media source through the front-end EPG according to the information of the media source returned by the streaming media server; and obtaining a focus area of the video selected by the user from the playing picture, and playing the video corresponding to the video playing address according to the video playing address corresponding to the focus area. According to the invention, multiple media streams are subjected to split-screen coding and then are compounded into one media source; according to the method and the device, one path of media source is played in a split-screen manner, so that the bandwidth requirement is greatly reduced, meanwhile, only one path of compounded media source needs to be decoded during decoding, and a multi-split-screen picture can be played more clearly and efficiently under the condition of the same configuration of the set top box, so that rapid channel selection is realized.

The invention relates to a method for synchronously storing and playing back fetal heart sound, heartbeat waveform and heart rate values. The storing method comprises the following steps of: acquiring fetal heart signals; dividing the signals into three paths, performing AD sampling on the first path to obtain heart sound signals, connecting the second path and an amplifier and then connecting a power amplification circuit, connecting the third path and an amplifying circuit and then dividing the third path into two paths, performing AD sampling on the first path of the third path to obtain heartbeat wave and a bar chart, and capturing, calculating and filtering the other path of the third path by a singlechip to obtain heart rate values after the other path of the third path is shaped by a comparator; and packing and storing the heart sound digital signals, the heartbeat waveform and the heart rate values as a fetal heart sound file. The playback method comprises the following steps of: reading the fetal heart sound file, extracting the heart rate value and heartbeat waveform data after unpacking, drawing the heartbeat waveform and the bar chart according to the waveform data, extracting the heart sound data at the same time and playing back the heart sound data after DA processing. The method can realize synchronous display, storage and playback of the fetal heart sound, the fetal heart rate, the heartbeat waveform and the bar chart, has more intuitive and clearer display, and can control the play of antenatal training music.

The invention provides a voice enhancement method and device, a voice acquisition method and device, a multimedia data acquisition method and device, a multimedia data playing method and device and amonitoring system. The voice enhancement method comprises the following steps: determining multi-channel frequency domain audio data obtained based on a microphone array; determining coordinate information of each microphone in the microphone array; determining sound source angle information according to the multi-channel frequency domain audio data and the coordinate information of each microphone; and enhancing the multi-channel frequency domain audio data according to the sound source angle information to obtain enhanced target frequency domain audio data. According to the invention, the sound source angle information can be determined according to the coordinate information of each microphone in the microphone array and the multi-channel frequency domain audio data, so that the voice emitted by the sound source can be enhanced precisely in a targeted manner, and the enhanced audio data can be played more clearly.

The invention provides an information playing method and an information playing apparatus. The information playing method includes the following steps: acquiring vector stroke information of a character; analyzing the vector stroke information, and determining vector contours and stroke orders of a plurality of strokes of the character on the basis of the result of the analysis; on the basis of the vector contour and the stroke order, playing the plurality of the strokes. According to the invention, the technical solution plays the plurality of strokes of the character based on the vector stroke information of the character, such that the playing the character is much clearer.

The invention discloses a high-definition image processing system based on a coupled circuit and a level conversion circuit. The system is characterized by mainly comprising a singlechip, a signal processing unit, a memory, the coupled circuit, an image coder connected with the signal processing unit, a conversion unit connected with the image coder, an image signal acquisition unit connected with the conversion unit, a decoder connected with the coupled circuit, the level conversion circuit connected with the decoder and a display connected with the level conversion circuit, wherein the signal processing unit, the memory and the coupled circuit are respectively connected with the singlechip. The coupled circuit can quickly transmit huge image signals, so that the signal transmission efficiency is improved. Meanwhile, the level conversion circuit can convert a level into a voltage suitable for the display, so that the display can work more stably.

The invention provides a visualization system and method based on a RTSP/ONVIF protocol. The system comprises a real-time video stream acquisition module used for connecting a camera and extracting a real-time video based on the RTSP protocol and in a h.264 format according to a preset RTSP address of the camera and a preset encoding format, and converting the real-time video into real-time video stream based on the HTTP protocol and in an Ogg format; a video playing module used for playing the real-time video stream in the Ogg format in a video playing interface, wherein at least one video player embedded in the video playing interface is arranged in the video playing interface, and a tag and an attribute value of the video player are embedded in the video playing interface; and a tripod head control module used for sending a control instruction based on a ONVIF protocol to a tripod head used for loading the camera.

The invention discloses a panoramic video playback method, a panoramic video playback device, and a player. The panoramic video playback method comprises: a plurality of longitude lines and latitude lines of a spherical model are predefined, wherein each longitude line and each latitude line have one intersection line; longitudes of longitude lines forming the intersection points and latitude of the latitude lines forming the intersection points are used as longitudes and latitudes of the intersection points respectively; the longitudes and latitudes of the intersection points are mapped to form three-dimensional space coordinates; the longitudes and latitudes of the intersection points are mapped to form two-dimensional texture coordinates; indexes of the intersection points are determined, wherein the index, the three-dimensional space coordinate, and the two-dimensional texture coordinate of each intersection point form parameters of the spherical model; the parameters of the spherical model are stored; a to-be-played panoramic video image is obtained; the panoramic video image is pasted to the spherical model based on the parameters of the spherical model; and according to a view angle range determined by a playing terminal, the panoramic video image pasted to the spherical model is played. Therefore, the panoramic video pictures can be played clearly and smoothly.

The invention discloses a multifunctional studio which comprises a studio base wall, a stage base layer, an electric chair base layer, packway lower sound-absorption ceiling layers and an air conditioner air duct layer. The air conditioner air duct layer is installed at the top of the studio base wall; the bottom of the air conditioner air duct layer is connected with a facility maintenance layer; and a camera bellows is installed at the bottom of the facility maintenance layer. The multifunctional studio provided by the invention is simple in structure and convenient to use; the whole studio is changed into a music hall, a conference hall and a studio hall, the use scope of the studio is greatly expanded through the three-in-one design, and the multifunctional studio is more convenient to use; meanwhile, a reverberation overturning plate and a ceiling capable of overturning are further cooperatively used, when the ceiling is opened, the reverberation time is shortened, and the sound absorption amount is increased; and when the multifunctional studio is used as the music hall, the reverberation overturning plate is designed on the wall surface, the reverberation overturning plate can serve as a sound absorption plate for the studio after being overturned, sound absorption of the studio is facilitated, and the studio can be used conveniently.

The invention discloses a lecture hall chairback interaction paperless touch control smart system, and belongs to the technical field of chairback video communication. The system comprises chairs, a main talking terminal, chairback sub-terminals, a first encoder, a streaming media server and a camera, wherein display screens are arranged on the backs of the chairs; the first encoder is used for intercepting and encoding lecture information of the main talking terminal, and transmitting encoded information to the streaming media server; the chairback sub-terminals are used for transmitting request signals to the streaming media server; the streaming media server is used for transmitting the encoded information to the chairback sub-terminals; and the chairback sub-terminals are used for presenting the encoded information on the display screens. According to the lecture hall chairback interaction paperless touch control smart system provided by the embodiment of the invention, the displayscreens are arranged on the chairbacks of all chairs, so that people far away from a lecture hall can receive lecturer information displayed on the display screens behind front-row chairs. The lecture hall chairback interaction paperless touch control smart system is convenient and practical, and the display screens can play video pictures more vividly and clearly.

The invention provides a voice synthesis device for underground safety production; the voice synthesis device includes a shell, and an audio interface and a network interface that are arranged on theshell, and also a microcontroller, a voice synthesizer, an audio power amplifier, a network transceiver and a power supply that are arranged in the shell; the device is characterized in that the microcontroller is connected with the voice synthesizer and the network transceiver; the voice synthesizer is connected with the audio power amplifier, the audio power amplifier is connected with the audio interface, the audio interface is connected with the underground loudspeaker, the network transceiver is connected with the network interface, and the network interface is connected with a computerin a remote control room through the Ethernet. The text information can be played naturally, smoothly and clearly, workers under a mine can hear the information, a safe danger avoiding place can be selected, and the voice synthesis device has the advantages of being simple in structure, reliable in performance, high in accuracy, low in cost and the like.

The invention discloses a phase shift type high-definition wireless audio receiving system. The system is characterized in mainly comprising a processing chip U, a capacitor C12 and a capacitor 13. The anode of the capacitor C12 passes through a resistor R12 and then is connected with the -IN pin of the processing chip U, and the cathode is connected with the GND pin of the processing chip U and is connected to the ground at the same time. The anode of the capacitor C13 is connected with the OUT pin of the processing chip U, and the cathode is taken as an output end. According to the system, an interference signal doped into an audio signal in a wireless transmission process can be filtered at a receiving end and an output end; the double-filtering mode is adopted to filter the interference signal, so that a filtering effect is more thorough, an output audio signal is more clean, the playing quality of sound is improved, and a hearing effect of people is better.

The invention provides a vehicle frequency modulation FM emission system and electronic equipment. The system comprises a signal modulation unit, a power amplifier unit, a boosting unit, and a vertical polarized antenna, the vertical polarized antenna comprises a feeding spring sheet, an antenna body, and a radiator, the feeding spring sheet is coupled to the power amplifier unit and electrically connected to a side surface at one end of the antenna body, the radiation unit is electrically connected to the other end of the antenna body, the radiation unit and the antenna body are arranged at an included angle in the same plane, and the included angle is greater than 90 degrees. According to the vehicle frequency modulation FM emission system, the signal power intensity can satisfy clear playing of an FM receiver in a vehicle, noises and current sounds are prevented, interferences of an FM radio station outside the vehicle can be well hidden, the stability of an FM transmit-receive unit in the vehicle is maintained, the power is limited in the vehicle, and normal operation of other receivers outside the vehicle is not disturbed. The vertical polarized FM emission antenna is advantaged by small size, light weight, convenient built-in, high radiation efficiency, and good directivity.

The invention discloses a constant-voltage-driven high-definition image processing system based on a coupling circuit. The constant-voltage-driven high-definition image processing system is characterized by mainly comprising a single-chip microcomputer, a signal processing unit, a storage, the coupling circuit, an image encoder, a conversion unit, an image signal acquisition unit, a decoder, a constant-voltage driving circuit and a display, wherein the signal processing unit, the storage and the coupling circuit are connected with the single-chip microcomputer respectively; the image encoder is connected with the signal processing unit; the conversion unit is connected with the image encoder; the image signal acquisition unit is connected with the conversion unit; the decoder is connected with the coupling circuit; the constant-voltage driving circuit is connected with the decoder; and the display is connected with the constant-voltage driving circuit. Through the coupling circuit, huge image signals can be transmitted rapidly, so that the signal transmission efficiency is increased. Meanwhile, the constant-voltage driving circuit is used for driving the display in order that the display works more stably, thereby achieving a better display effect.

The invention discloses a signal high-fidelity wireless audio receiving system based on phase processing. The system is characterized in that the system is mainly composed of a processing chip U, a capacitor C12 of which the positive electrode is connected with the -IN pin of the processing chip U through a resistor R12 and the negative electrode is connected with the GND pin of the processing chip U and grounded, and a capacitor C13 of which the positive electrode is connected with the OUT pin of the processing chip U and the negative electrode acts as the output end. The interference signals doped in audio signals in the wireless transmission process can be filtered at the receiving end and the output end, and the interference signals can be filtered by using the mode of double filtering so that the filtering effect is enabled to be more thorough, the outputted audio signals are enabled to be cleaner, the playing quality of sound can be enhanced and the people's auditory effect is enabled to be better.

The invention discloses a video amplifier for a video monitoring device. The video amplifier comprises first to third potentiometers, a first triode, a second triode, first to eleventh resistors, first to fourth inductance coils, a first diode, a second diode, first to ninth capacitors and a transformer, wherein a first voltage input end is connected with a collector of the first triode and a first end of the first potentiometer respectively; a second voltage input end is connected with a first end of the ninth capacitor, a first end of the third potentiometer, a first end of the tenth resistor and a first end of the eleventh resistor respectively. The variation amplitude is reduced when the load power of the video amplifier for the video monitoring device varies together with the ray power of a video player, so that videos can be played clearly; the video amplifier is simple in structure and has popularization and usage values.