CN209448838U - A kind of audio-video passback terminal based on day communication satellite communication system - Google Patents

Abstract

The utility model discloses a kind of, and the audio-video based on day communication satellite communication system returns terminal.A kind of audio-video passback terminal based on day communication satellite communication system, comprising: host and satellite communication antena, the host are connect with the satellite communication antena by RF cable；Wherein, the host is also used to be encoded to obtain audio-video code stream to the audio-video for obtaining audio-video；The satellite communication antena, for the audio-video code stream to be sent to audio/video server or other terminals by day communication satellite communication system.The technical solution of the utility model embodiment is conducive to carry out audio-video passback by day communication satellite communication system, it is not limited by public network signals such as 3G, 4G, satellite-signal can also be led to by day in the unlapped region in base station and realize audio-video passback, can preferably meet user demand.

Description

Audio and video return terminal based on heaven-earth satellite communication system

Technical Field

The utility model relates to an audio frequency and video passback technical field especially relates to an audio frequency and video passback terminal based on it leads to satellite communication system.

Background

The audio and video return system is widely applied to the fields of governments, army, public security, finance, insurance, telecommunication, fire fighting, petrifaction, oil field, forest fire prevention, traffic, mines, marine rescue, passenger transportation and the like, and in the audio and video return system, a user realizes the return of audio and video to other users through an audio and video return terminal, so that the user can know the field situation by watching the returned audio and video, and command decision is realized.

In the existing audio and video return technology, an audio and video return terminal usually depends on public networks such as 3G and 4G, and the reliability of data in the audio and video return process cannot be guaranteed; in addition, public networks such as 3G and 4G are limited by coverage areas of base stations, so that full coverage of communication in remote mountainous areas, deserts, gobi, forests and other areas is difficult to realize, and audio and video return functions cannot be realized in areas where signals are not covered.

SUMMERY OF THE UTILITY MODEL

The utility model provides an audio frequency and video passback terminal based on it leads to satellite communication system to improve the reliability of audio frequency and video passback in hope, and the audio frequency and video passback receives the region restriction few, further satisfies user's demand.

In a first aspect, the utility model provides an audio and video passback terminal based on a satellite communication system that leads to sky, the audio and video passback terminal includes host computer and satellite communication antenna, the host computer with the satellite communication antenna passes through the radio frequency cable and connects; the host is used for acquiring audio and video and coding the audio and video to obtain an audio and video code stream; and the satellite communication antenna is used for transmitting the audio and video code stream to an audio and video server or other terminals through an all-satellite communication system.

The heaven-earth satellite communication system is a satellite mobile communication system and has the following characteristics: firstly, in the heaven-earth satellite communication system, the terrain covered by satellite signals is not limited, seamless coverage can be realized in oceans, mountainous areas, grasslands, forests, gobi, deserts and the like, all-weather, all-day-long, stable and reliable mobile communication services can be provided, and secondly, compared with other audio and video return terminals, the audio and video return terminal based on the heaven-earth satellite communication system has high autonomous controllability from hardware to software and higher safety and reliability, and the heaven-earth satellite communication system is not limited by the coverage area of a base station and can be used in any area covered by satellite signals. Therefore, the user can safely and reliably realize audio and video return in the area limited by the coverage area of the base station by carrying the audio and video return terminal based on the satellite communication system.

The host acquires the audio and video, wherein the host acquires the far-end audio and video from the external equipment by connecting the external equipment, and the far-end audio and video refers to the audio and video acquired by the external equipment and is called as the far-end audio and video because the far-end audio and video is not the audio and video directly acquired by the audio and video return terminal. The host computer acquires the audio and video and also directly acquires the local audio and video through the audio and video unit. It can be understood that the far-end audio and video are audio and video corresponding to the audio, which are obtained by the external device in a field synchronously, that is, audio in the same scene and video corresponding to the audio in the scene, and the audio and the video are obtained and transmitted simultaneously after being processed, which is called audio and video. The audio and video codec encodes audio and video (including remote audio and video and local audio and video) to form an audio and video code stream, and the audio and video server or other terminals receive the audio and video code stream and decode the audio and video code stream to realize audio and video return. The audio/video code stream refers to an audio/video code stream obtained by compression coding of audio/video by using an audio/video compression technology, wherein the audio/video compression technology refers to the technology of applying proper digital signal processing to an original digital audio/video signal stream to reduce (compress) the code rate of the original digital audio/video signal stream under the condition of no loss of useful information quantity or negligible introduced loss, and is also called compression coding. The audio and video code stream refers to the data flow rate used by the audio and video file in unit time, also called code rate, and is the most important part for controlling the picture quality in the audio and video coding.

It should be noted that, in a possible embodiment of the present invention, the satellite communication antenna, through the satellite communication system, may send the audio/video code stream to one or more audio/video servers, or may send the audio/video code stream to one or more other terminals, or may send to more than one audio/video servers and more than one other terminals at the same time. The utility model discloses do not do the injeciton to the object that this audio and video code stream sent.

Therefore, the audio and video return terminal based on the skynet satellite communication system provided by the first aspect is implemented to return audio and video through the skynet satellite communication system without limitation of public network signals such as 3G and 4G, and the audio and video return can be realized through the skynet satellite signals in an area uncovered by the base station, so that the reliability of the audio and video return is improved, and the user requirements can be better met.

Based on the first aspect, in the specific embodiment of the present invention, the host specifically includes: the satellite communication antenna is connected with the satellite communication antenna through the radio frequency cable, the ARM processor is connected with the audio and video codec through an Ethernet interface or a USB interface, and the ARM processor is connected with the satellite communication antenna through a serial interface; the audio and video codec is used for encoding the audio and video to form an audio and video code stream and transmitting the audio and video code stream to the satellite communication device through the ARM processor; and the satellite communication device is used for transmitting the audio and video code stream to the satellite communication antenna.

Based on the first aspect, in the specific embodiment of the present invention, the host connects to the external camera of the composite synchronous video broadcast signal CVBS interface through the audio/video cable; the host is specifically used for receiving the audio and video transmitted by the external camera and transmitting the audio and video to an audio and video codec in the host.

It should be noted that, in a possible embodiment of the present invention, the audio/video return terminal may be externally connected to a camera, and a built-in audio/video unit (including a camera and a microphone) is not installed in the host of the audio/video return terminal, but the audio/video unit may be installed only in the host of the audio/video return terminal, and the audio/video return terminal is not externally connected to the camera, and further, the audio/video unit is installed in the host as well as the external camera. The embodiment of the utility model provides a do not limit this.

Based on the first aspect, in the specific embodiment of the utility model, the external USB equipment of host computer, the host computer specifically still is used for acquireing external USB equipment, the transmission audio frequency and video, and will audio frequency and video transmission extremely the audio frequency and video codec of host computer.

Based on the first aspect, in the specific embodiment of the utility model, the host computer can be used for receiving the audio frequency and video that external camera recorded in real time, and will the audio frequency and video transmission that records in real time extremely audio frequency and video codec in the host computer.

It should be noted that the host may be configured to receive the audio and video recorded by the external camera in real time, so as to realize real-time return of the audio and video.

Based on the first aspect, in the specific embodiment of the present invention, the host further includes: the audio and video unit is connected with the ARM processor; the audio and video unit is used for collecting the audio and video and transmitting the audio and video to the audio and video codec through the ARM processor.

Based on the first aspect, in the present invention, in a possible embodiment, the host further includes: the power supply device and the storage chip are respectively connected with the ARM processor; the power supply device is used for supplying power to the audio and video return terminal; the storage chip is used for storing the audio and video in the audio and video return terminal.

Based on the first aspect, in the embodiment of the present invention, the memory chip is an LPDDR3 and an e-NAND two-in-one chip.

The memory chip can be a memory and storage two-in-one chip, the memory uses a low-power-consumption memory chip, the storage uses a memory chip with high integration level, the memory chip and the memory chip are packaged together by a multi-chip packaging technology, the size and the weight of the device are reduced, the size and the weight of the host are further reduced, and the device is convenient for a user to carry.

Further, the memory chip can be a low-power-consumption LPDDR3 memory chip, the e-NAND memory chip with high integration level can be packaged together with the LPDDR3 through multi-chip packaging technology, and therefore the size and the weight of the device are reduced.

Based on the first aspect, in the specific embodiment of the present invention, the power supply device includes a charging adapter, a charging circuit, or a rechargeable battery.

Based on the first aspect, the satellite communication antenna is further configured to send the audio and video code stream to other terminals in real time through an aerospace satellite communication system.

It can be seen, in the embodiment of the utility model, through implementing the utility model discloses audio and video passback terminal can be in the relatively poor or no area of signal of public network signals such as 3G, 4G, solves the problem that the audio and video passback in-process data packet loss, audio and video card pause phenomenon and can't carry out the audio and video passback, and then guarantees the reliability of audio and video passback, satisfies user's demand better.

In a second aspect, the utility model provides another kind of audio and video passback terminal based on the satellite communication system that leads to sky, audio and video passback terminal includes audio and video acquisition module and satellite communication module, and wherein, audio and video acquisition module is used for acquireing the audio and video, still is used for to audio and video encode and obtain the audio and video code stream; and the satellite communication module is used for transmitting the audio and video code stream to an audio and video server or other terminals through an all-weather satellite communication system.

Based on the second aspect, in the specific embodiment of the utility model, the audio/video passback terminal still includes: the processing module correspondingly comprises an audio and video coding and decoding module; the audio and video coding and decoding module is used for coding the audio and video to form an audio and video code stream and transmitting the audio and video code stream to the satellite communication device through the processing module; and the satellite communication module is used for transmitting the audio and video code stream to the satellite communication antenna.

Based on the second aspect, in the specific embodiment of the present invention, the audio/video acquisition module is connected to the external camera of the composite synchronous video broadcast signal CVBS interface through the audio/video cable; the audio and video acquisition module is specifically used for receiving the audio and video transmitted by the external camera and transmitting the audio and video to the audio and video coding and decoding module in the audio and video acquisition module.

Based on the second aspect, in the specific embodiment of the utility model, audio frequency and video acquisition module specifically is used for receiving the real-time audio frequency and video of recording of external camera, and will the real-time audio frequency and video of recording transmit to audio frequency and video codec module in the audio frequency and video acquisition module.

Based on the second aspect, in the specific embodiment of the present invention, the audio/video obtaining module further includes: the audio and video acquisition module is used for acquiring the audio and video and transmitting the audio and video to the audio and video codec through the ARM processor.

Based on the second aspect, in the specific embodiment of the present invention, the audio/video backhaul terminal further includes a power module and a storage module, and the power module and the storage module are respectively connected to the ARM processor; the power supply module is used for supplying power to the audio and video return terminal; the storage module is used for storing the audio and the video in the audio and video return terminal.

Based on the second aspect, in the embodiment of the present invention, the memory module may be an LPDDR3 and an e-NAND two-in-one chip.

Based on the second aspect, in the specific embodiment of the present invention, the power module includes a charging adapter, a charging circuit, or a rechargeable battery.

Based on the second aspect, in the specific embodiment of the utility model, the external camera of audio video acquisition module, audio video acquisition module specifically still is used for acquireing external camera transmission audio video, and will audio video transmission extremely audio video codec module in the audio video acquisition module.

Based on the second aspect, in the specific embodiment of the utility model, satellite communication module still is used for through the sky lead to satellite communication system with audio and video code stream sends to other terminals in real time.

It can be seen, in the embodiment of the utility model, through implementing the utility model discloses audio and video passback terminal can be in the relatively poor or no area of signal of public network signals such as 3G, 4G, solves the problem that the audio and video passback in-process data packet loss, audio and video card pause phenomenon and can't carry out the audio and video passback, and then guarantees the reliability of audio and video passback, better user's demand of satisfying.

The embodiment of the utility model provides an in, through implementing the utility model discloses audio frequency and video passback terminal can also realize acquireing distal end audio frequency and video or local audio frequency and video to realize the real-time passback of audio frequency and video, satisfy user's demand better.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a structural diagram of an skywalking satellite communication system according to an embodiment of the present invention.

Fig. 2 is the embodiment of the utility model provides an audio/video passback terminal based on it leads to satellite communication system.

Fig. 3 is another audio/video return terminal based on the skyward satellite communication system according to an embodiment of the present invention.

Fig. 4 is another audio/video return terminal based on the skyward satellite communication system provided by the embodiment of the present invention.

Fig. 5 is an embodiment of the present invention provides another audio/video return terminal based on an skyward satellite communication system.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention. The following are detailed below.

The terms "first," "second," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises" and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to the listed steps or modules but may alternatively include other steps or modules not listed or inherent to such process, method, article, or apparatus.

For better understanding of the embodiments of the present invention, the application system architecture of the embodiments of the present invention is described first.

Referring to fig. 1, fig. 1 is a system structure diagram according to an embodiment of the present invention. As shown in fig. 1, the audio/video backhaul system includes: audio-video backhaul terminals 101, heaven-earth satellite communication systems 102, audio-video servers 103, and other terminals 104.

The audio/video return terminal 101 has a function of communicating with the skyward satellite communication system 102, and data (such as audio/video code streams described below) can be sent to the audio/video server 103 and other terminals 104 through the skyward satellite communication system 102, so that the terminal returns audio/video to the audio/video server. In a possible application scenario, the audio/video backhaul terminal 101 may also transmit data to the other terminals 104 through the skynet satellite communication system 102, so that the terminal transmits audio/video back to the terminal.

The terrain covered by the satellite signal of the skynet satellite communication system 102 is not limited, and seas, mountainous areas, grasslands, forests, gobi, deserts and the like can realize seamless coverage, can provide all-weather, all-day-long, stable and reliable mobile communication services, is not limited by a coverage area of a base station, and can be used in any area covered by the satellite signal. The skynet satellite communication system 102 may be, for example, a skynet one number 01 star system in china.

For example, when a user carries the audio/video return terminal and enters a desert without coverage of 3G, 4G and other public networks, and needs to return audio/video, the user can return audio/video to the audio/video server through the skynman satellite communication system 102 and can also send audio/video to other terminals through the skynman satellite communication system 102.

In order to solve the problem of the aforementioned prior art, the embodiment of the utility model provides an audio and video passback terminal based on it leads to satellite communication system, this audio and video passback terminal based on it leads to satellite communication system can insert it leads to satellite communication system, lead to satellite communication system through this day and realize the audio and video passback, the reliability of audio and video passback has been improved, the region that has solved at the relatively poor or no signal of public network signal, the data packet loss that appears among the audio and video passback process, audio and video card pause phenomenon and the problem that can't carry out the audio and video passback.

Referring to fig. 2, fig. 2 is an audio/video return terminal based on an skyward satellite communication system according to an embodiment of the present invention, which is applied to the system shown in fig. 1. As shown in fig. 2, an embodiment of the present invention provides an audio/video return terminal 20 based on an skywalking satellite communication system, including: a host 21 and a satellite communication antenna 22, wherein the host 21 may include, but is not limited to, a power supply device 211, an ARM processor 212, a memory chip 213, a satellite communication device 214, and an audio/video codec 215. The satellite communication device 214 is connected with the satellite communication antenna 22 through a radio frequency cable; in the host 21, the ARM processor 212 is connected to the satellite communication device 214 through a serial interface, the ARM processor 212 is connected to the audio/video codec 215 through an ethernet interface or a USB interface, and the ARM processor 212 is connected to the memory chip 213 and the power supply device 211, respectively.

The audio/video return terminal 20 may be a portable mobile terminal, and can implement video return while moving. In a specific application scenario, the audio/video backhaul terminal 20 may be referred to as a video backhaul machine, a satellite communication terminal, or the like.

The power supply device 211 may include a charging adapter, a rechargeable battery, a power supply circuit, a charging circuit, a power management unit, and the like, the portable terminal is powered by the charging adapter or the rechargeable battery, and after the charging adapter is connected to the portable terminal, the charging circuit charges the rechargeable battery, so as to provide power for the audio/video return terminal 20.

The audio/video codec 215 is designed based on a domestic ARM processor platform, has a high degree of autonomous controllability, and is a program or a device capable of compressing or decompressing digital audio/video.

An audio/video codec 215 in the host 21 is connected to an external camera of the composite synchronous video broadcast signal CVBS interface through an audio/video cable, so as to receive audio/video transmitted by the external camera. Thereby host computer 21 can connect external USB equipment and receive external USB's audio frequency and video, of course, also can connect other external devices that can transmit audio frequency and video, the embodiment of the utility model provides a do not limit to this.

It should be noted that the audio/video codec 215 may directly obtain the audio/video transmitted by the external camera (refer to the audio/video codec 416 in fig. 4, which is not described herein), after obtaining the audio/video transmitted by the external device (such as the external USB device), the host 21 encodes the audio/video through the audio/video codec 215 to obtain a corresponding audio/video code stream, and then transmits the audio/video code stream to the ARM processor 212 for subsequent processing. Here, the audio/video code stream refers to a data flow rate used by the audio/video file in a unit time, which is also called a code rate.

The ARM processor 212 may be a low-power processor, and includes an integrated USB2.0 host controller, a serial interface, and other interfaces, and may send the audio/video code stream encoded by the audio/video codec 215 to the satellite communication device 214.

Here, the memory chip 213 may be a memory and storage two-in-one chip, wherein the memory may be a low power consumption memory chip, the storage may be a high integration memory chip, then, the memory chip and the memory chip are packaged together by a multi-chip packaging technology, such as the LPDDR3 and the e-NAND two-in-one chip, thus, in addition to performing the dual functions of storage and memory, the size and weight of the device is reduced, as can be appreciated, in the process of implementing audio/video return by the whole audio/video return terminal, the storage chip 213 can store the audio/video in the corresponding file, the user can name the file independently, when the audio and video needs to be reused, the audio and video return terminal can search the corresponding file in the storage chip 213 to obtain the audio and video again, in other words, the audio and video return terminal can realize non-real-time return of the audio and video for an unlimited number of times by storing the audio and video.

Here, the satellite communication device 214 is an skynet satellite communication system device with high autonomous controllability, the ARM processor 212 is connected with the satellite communication device 214 through a serial interface, and performs interaction by using an AT command set, so that a user can perform control in aspects of calling, short messages, phone books, data services, faxing and the like through an AT command. The satellite communication device 214 is connected to the satellite communication antenna 22 via a radio frequency cable, and accesses the sky-based satellite communication system via the satellite communication antenna 22.

The audio/video return terminal 20 can access the satellite communication system through the satellite communication antenna 22, and after the data service of the satellite communication system is started, the audio/video return terminal can return the audio/video to the audio/video server or other terminals through the satellite communication system. The terrain covered by satellite signals of the satellite communication system is not limited, seamless coverage can be realized for oceans, mountainous areas, grasslands, forests, gobi, deserts and the like, all-weather, all-time, stable and reliable mobile communication services can be provided, the mobile communication service is not limited by coverage areas of base stations, and the mobile communication service can be used for any areas covered by satellite signals and can ensure more reliable video return. For example, when the user carries the audio/video return terminal 20 and needs to obtain assistance in a mountain area without coverage of public network signals such as 3G and 4G, the user can well know the situation of the user through the audio/video return terminal and perform targeted assistance.

For example, the audio/video backhaul device comprises an LC1860C six-core processor, a rechargeable battery, an LPDDR3 and e-NAND two-in-one chip, an OTDR satellite communication system device with high autonomous controllability, an OTDR satellite communication system antenna and an audio/video codec with high autonomous controllability. The rechargeable battery provides power for the audio and video transmitter, after the audio and video transmitter is connected to the satellite communication system, the data service of the satellite is started, the audio and video codec can be connected with the far end of the external camera of the composite synchronous video broadcast signal CVBS to obtain the audio and video, and then, the audio and video code is encoded to form an audio and video code stream, then the audio and video code stream can be transmitted to an OTC satellite communication device in real time through an LC1860C six-core processor, finally the real-time audio and video return is completed by transmitting the audio and video code stream to an audio and video server in real time through an OTC satellite communication system, and the audio and video code stream can also be transmitted to other terminals in real time through the OTC satellite communication system, of course, the audio and video can also be stored in the e-NAND of the LPDDR3 and e-NAND two-in-one chip, and when needed, can be called in the e-NAND of the chip combining LPDDR3 and e-NAND.

In a specific implementation manner of this aspect, the audio/video backhaul terminal may further include an external camera, where the external camera is an external camera of a composite synchronous video broadcast signal CVBS interface, and is configured to collect a far-end audio/video or capture an audio/video recording in real time, and then transmit the far-end audio/video or the captured audio/video recording collected in real time to the audio/video codec 215. Here, the external camera may be placed at a place where audio/video recording is required, and under the control of the audio/video return terminal 20, the external camera may record a scene within a shooting range of the external camera 23, obtain audio/video in the scene, and transmit the audio/video to the audio/video codec 215 through an audio/video cable.

It should be noted that the audio and video acquired by the external camera are audio and video that appear in a scene at the same time, including recording the audio in the scene and recording the video in the scene, and it is simply understood that the audio and video acquired by the external camera are the whole of the audio in the same scene and the video corresponding to the audio in the scene.

It can be understood that the external camera can transmit the audio and video to the audio and video codec 215 while collecting the audio and video to realize real-time audio and video return, and the external camera can also select any other time to transmit the shot audio and video to the audio and video codec 215 after shooting the audio and video to realize non-real-time audio and video return.

It can be seen, the embodiment of the utility model provides an in, implement and can acquire audio and video through external camera distal end based on the audio and video passback terminal of day logical satellite communication system, and obtain the audio and video code stream to audio and video coding, finally, send audio and video code stream to audio and video server or other terminals through day logical satellite communication system, the region that public network signal is relatively poor or do not have the signal at 3G, 4G etc. has been solved, the data packet loss that appears in the audio and video passback process, audio and video card pause phenomenon or the problem that can't carry out the audio and video passback, and then guarantee the reliability of audio and video passback, better satisfy user's.

Referring to fig. 3, fig. 3 is another audio/video return terminal based on the skyward satellite communication system according to an embodiment of the present invention. As shown in fig. 3, an audio/video return terminal 30 based on the skyward satellite communication system provided by the embodiment of the present invention may include: the host 31 may include, but is not limited to, a power supply device 311, an ARM processor 312, a memory chip 313, an audio/video unit 314, an audio/video codec 316, a satellite communication device 315, and a satellite communication antenna 32, the host and the satellite communication antenna are connected by a radio frequency cable, in the host 31, the ARM processor 312 is connected with the satellite communication device 315 by a serial interface, the ARM processor 312 is connected with the audio/video codec 316 by an ethernet interface or a USB interface, and the ARM processor 312 is respectively connected with the power supply device 311, the memory chip 313, and the audio/video unit 314 in a communication manner.

The audio/video return terminal 30 may be a portable mobile terminal, and can implement audio/video return during movement. In a specific application scenario, the audio/video backhaul terminal 30 may be referred to as an audio/video backhaul machine, a satellite communication terminal, or the like.

The power supply device 311 may include a charging adapter, a rechargeable battery, a power supply circuit, a charging circuit, a power management unit, and the like, the portable terminal is powered by the charging adapter or the rechargeable battery, and after the charging adapter is connected to the portable terminal, the charging circuit charges the rechargeable battery, so as to provide power for the audio/video return terminal 30.

The audio/video unit 314 may be used to capture local audio/video. The local audio and video refers to the audio and video of the position where the host is located, wherein the audio and video unit 314 may include a microphone 3141 and a camera 3142, the microphone 3141 is used to record a local audio, the camera 3142 is used to shoot a local video corresponding to the local audio, and then the audio and video unit 314 processes the obtained audio and video to synthesize an audio and video whole, in other words, the audio and video is a whole of audio and video that appears in one scene at the same time. In addition, the audio/video unit 314 may also be configured to encode a local audio/video to obtain an audio/video code stream.

Here, the audio/video unit 314 may store the audio/video in the memory chip 313 after the audio/video is acquired, so that a user can conveniently select any other time to call the stored audio/video file from the memory chip 313, so as to implement non-real-time return of the audio/video.

Further, the audio/video unit 314 may also encode the local audio/video to form an audio/video code stream at the same time of real-time local audio/video, and then transmit the audio/video code stream to the satellite communication device 315 in real time through the ARM processor 312 to implement real-time return of the audio/video.

The audio and video code stream refers to the data flow used by the audio and video file in unit time, and is also called code rate. The ARM processor 312 may be a low power processor including an integrated USB2.0 host controller, a serial interface, and the like.

Here, the memory chip 313 may be a memory and storage two-in-one chip, wherein the memory may be a low power consumption memory chip, and the storage may be a high integration memory chip, and then the memory chip and the memory chip are packaged together by a multi-chip packaging technology, so that the size and weight of the device are reduced in addition to the dual functions of storage and memory. It can be understood that, in the whole process of implementing audio/video return by the audio/video return terminal 30, the audio/video acquired by the audio/video unit 314 can be stored in the corresponding file of the storage chip 313, and the user can name the file autonomously, and when the audio/video needs to be acquired again, the video return terminal 30 can search the corresponding file in the storage chip 313 to obtain the audio/video again. In other words, the video return terminal can realize non-real-time return of the audio and the video for unlimited times by storing the audio and the video.

Here, the satellite communication device 315 is an skyward satellite communication system device with high autonomous controllability, the ARM processor 312 is connected to the satellite communication device 315 through a serial interface, and an AT command set is used for interaction, so that a user can control calling, short messages, a phone book, data services, faxing and the like through an AT command. The satellite communication device 315 is connected to the satellite communication antenna 32 via a radio frequency cable, and then accesses the sky communication system via the satellite communication antenna 32.

The audio/video return terminal 30 can start the data service of the satellite communication system after accessing the satellite communication system through the satellite communication antenna 32, and then return the video to the audio/video server or other terminals through the satellite communication system. The terrain covered by the satellite signal of the satellite communication system is not limited, the seas, mountainous areas, grasslands, forests, gobi, deserts and the like can realize seamless coverage, all-weather, all-time, stable and reliable mobile communication service can be provided, the mobile communication service is not limited by the coverage area of a base station, and the mobile communication service can be used in any area covered by the satellite signal and can ensure more reliable audio and video return. For example, when the user carries the audio/video return terminal 30 and needs to obtain assistance in a mountain area without coverage of public network signals such as 3G and 4G, the user can well know the situation of the user through the audio/video return terminal and perform targeted assistance.

For example, the audio/video backhaul device includes an LC1860C six-core processor, a rechargeable battery, an LPDDR3 and an e-NAND two-in-one chip, an skyward satellite communication system device with high autonomous controllability, an skyward satellite communication system antenna, and an audio/video unit (including a camera and a microphone). The rechargeable battery provides power for the audio and video transmitter, after the audio and video transmitter is connected to the satellite communication system through the satellite communication system antenna, data services of the satellite communication system are started, the audio and video transmitter can acquire local audio and video in real time by using an audio and video unit and encode the audio and video to form an audio and video code stream, then the audio and video code stream can be sent to the satellite communication system device through an LC1860C six-core processor in real time, and finally the audio and video code stream is sent to an audio and video server through the satellite communication system in real time, so that real-time video transmission is realized. In addition, the audio and video code stream can also be transmitted to other terminals in real time through the satellite communication system. In the whole process, the audio and video back-transmission machine can store the audio and video in the e-NAND of the LPDDR3 and the e-NAND two-in-one chip through the LC1860C six-core processor, and can call the audio and video in the e-NAND of the LPDDR3 and the e-NAND two-in-one chip when needed.

It can be seen, the embodiment of the utility model provides an in, implement and can obtain audio and video at local through the audio and video unit based on the audio and video passback terminal of day leads to satellite communication system, and obtain the audio and video code stream to audio and video coding, finally, pass through the day and lead to satellite communication system and send the audio and video code stream to the audio and video server, the region that public network signal is relatively poor or not have the signal at 3G, 4G etc. has been solved, the data packet loss that appears in the video passback process, the problem of video card pause phenomenon and unable video passback carries out, and then guarantee the reliability of video passback, better satisfy user's demand.

Referring to fig. 4, fig. 4 is a still another audio/video return terminal based on the skyward satellite communication system according to an embodiment of the present invention. As shown in fig. 4, an audio/video return terminal 40 based on the skyward satellite communication system provided by the embodiment of the present invention may include: a host 41 and a satellite communication antenna 42, and the host 41 may include, but is not limited to, a power supply device 411, an ARM processor 412, an audio and video unit 413 (including a microphone 4131 and a camera 4132), a memory chip 414, a satellite communication device 415, and an audio and video codec 416. The satellite communication device 415 and the satellite communication antenna 42 are connected by a radio frequency cable, in the host 41, the ARM processor 412 is connected with the satellite communication device 415 by a serial interface, the ARM processor 412 is connected with the audio/video codec 416 by an ethernet interface or a USB interface, and the ARM processor 412 is respectively connected with the power supply device 411, the audio/video unit 413 and the memory chip 414 in a communication manner.

The audio/video return terminal 40 can start the data service of the satellite communication system after accessing the satellite communication system through the satellite communication antenna 42, and can transmit the audio/video code stream in the audio/video return terminal 40 to the satellite communication system, and finally to the audio/video server through the satellite communication system, and certainly, can also transmit to other terminals through the satellite communication system.

The audio/video codec 416 is a program or a device capable of compressing or decompressing digital audio/video, and may be connected to an external camera of the composite synchronous video broadcast signal CVBS interface through an audio/video cable to obtain a first audio/video synchronized by the external camera 417. The external camera 417 is placed at a place where video recording is needed, under the control of the audio/video return terminal 40, the external camera 417 records a scene within the shooting range of the external camera, obtains audio/video in the scene and synchronizes the audio/video to the audio/video codec 416 through an audio/video cable, and the audio/video codec 416 encodes the audio/video to obtain a corresponding audio/video code stream. Meanwhile, it can also obtain the second audio and video transmitted by the audio and video unit 413 through the ARM processor 412. The audio/video unit 413 is located at the position of the host, and acquires the audio/video of the position of the host.

The external camera 417 is an external device, and the audio/video codec 416 in the host 41 receives the audio/video transmitted by the external camera through an external camera connected to the CVBS interface. Thereby also can connect external USB equipment and receive external USB's audio frequency and video, of course, also can connect other external devices that can transmit audio frequency and video, the embodiment of the utility model provides a do not limit to this.

In addition, the audio/video codec 416 may be directly connected to an external camera 417 of the composite synchronous video broadcast signal CVBS interface through an audio/video cable, and obtain remote audio/video from the external camera 417. It can be understood that other external devices may also be connected, for example, a remote audio/video transmitted by the USB device is obtained through the external USB device. The circumscribed camera 417 shown in the figure indicates an example, and does not represent a limitation.

In the backhaul terminal 40, the audio/video codec 416 may be configured to obtain the far-end audio/video transmitted by the external device (such as the external camera 417 and the USB device), and the audio/video obtaining unit 413 may be configured to obtain the local audio/video. The existence of the audio/video unit 413 and the audio/video codec 416 enables the audio/video return terminal to obtain both far-end audio/video and local audio/video, and further meets the requirements of users.

In the backhaul terminal 40, the audio/video unit 413 may encode the acquired audio/video to obtain an audio/video code stream, and may also transmit the audio/video to the audio/video codec 416 to encode the audio/video to obtain the audio/video code stream. The embodiment of the utility model provides a do not limit this.

Here, the microphone 4131 and the camera 4132 in the audio/video unit 413 respectively correspond to the microphone 3141 and the camera 3142 in the audio/video unit 314 in fig. 3, and reference is made to the description of the microphone 3141 and the camera 3142 in fig. 3, which is not repeated here.

The ARM processor 412 may be a low-power-consumption processor, and includes an integrated USB2.0 host controller, a serial interface, and other interfaces, and may transmit an audio/video code stream encoded by the audio/video codec 416 and the audio/video unit 413 to the satellite communication device 415, or transmit an audio/video code stream acquired by the audio/video codec 416 and the audio/video unit 413 to the storage chip 414 for storage.

Here, the satellite communication device 415 is an skyward satellite communication system device with high autonomous controllability, the ARM processor 412 is connected to the satellite communication device 415 through a serial interface, and an AT command set is used for interaction, so that a user can control calling, short messages, a phone book, data services, faxing and the like through an AT command, the satellite communication device 415 can send the audio/video code stream to an audio/video server through the skyward satellite communication system to realize audio/video return, and the satellite communication device 415 can also send the audio/video code stream to other terminals through the skyward satellite communication system.

The memory chip 414 may be a memory and storage two-in-one chip, where the memory may be a low power consumption memory chip, and the storage may be a storage chip with high integration level, and then the memory chip and the storage chip are packaged together by a multi-chip packaging technology, so that, in addition to realizing dual functions of storage and memory, the size and weight of the device are reduced, it can be understood that, in the process of realizing audio and video return by the whole audio and video return terminal, the memory chip 414 may store audio and video (including the first audio and video and the second audio and video) in corresponding files, a user may name the files autonomously, and when the audio and video needs to be used again, the audio and video return terminal may search the corresponding files in the memory chip 414 to obtain the audio and video again.

The power supply device 411 may include a rechargeable battery, a CPU, a peripheral power supply circuit, a charging circuit, and the like, and may charge the audio/video backhaul terminal.

For example, the audio/video return terminal includes a rechargeable battery, an audio/video unit (including a camera and a microphone), a storage two-in-one chip (a chip packaged with LPDDR3 and e-NAND by using a multi-chip packaging technology), a satellite communication device, a satellite communication antenna, an audio/video codec, and an external camera.

The audio/video return terminal can adopt a charging adapter or a rechargeable battery to supply power to the portable terminal, and after the charging adapter is connected to the portable terminal, the charging circuit charges the rechargeable battery. The audio and video return terminal is externally connected with a camera, and can acquire remote audio and video in the area near the location where the externally connected camera is arranged and transmitted by the externally connected camera, and transmit the audio and video to an audio and video codec to be encoded to form a first audio and video code stream. Certainly, the audio/video return terminal can also obtain the local audio/video at the position where the audio/video return terminal is located through the audio/video unit, and the audio/video unit encodes the local audio/video to form a second audio/video code stream. The first audio/video code stream or the second audio/video code stream can be transmitted to the satellite communication device through the LC1860C six-core processor, and finally the audio/video return terminal is transmitted to the audio/video server through the heaven-earth satellite communication system to complete the video return or is transmitted to other terminals.

In the whole process, the audio/video return terminal can store the first audio/video or the second audio/video in the e-NAND of the LPDDR3 and e-NAND two-in-one chip through the LC1860C six-core processor, and can call the first audio/video or the second audio/video in the e-NAND of the LPDDR3 and the e-NAND two-in-one chip when needed.

Referring to fig. 5, fig. 5 is a schematic diagram of another video backhaul terminal based on an skywalking satellite communication system according to an embodiment of the present invention. The embodiment of the utility model provides a video passback terminal 50 based on it leads to satellite communication system includes: an audio and video acquisition module 501 and a satellite communication module 502; the audio/video acquisition module 501 is configured to acquire audio/video and encode the audio/video to obtain an audio/video code stream; and the satellite communication module 502 is used for sending the audio and video code stream to an audio and video server through an skynet satellite communication system.

The audio/video obtaining module 501 may correspond to the audio/video codec 215 in fig. 2, and reference may be made to the description of the audio/video codec 215 in fig. 2, and correspondingly, the satellite communication module 502 may correspond to the satellite communication device 214 and the satellite communication antenna 22 in fig. 2, and reference may be made to the description of the satellite communication device 214 and the satellite communication antenna 22 in fig. 2, which is not repeated herein.

The audio/video obtaining module 501 may correspond to the audio/video unit 314 in fig. 3, and reference may be made to the description of the audio/video unit 314 in fig. 3, and correspondingly, the satellite communication module 502 may correspond to the satellite communication device 315 and the satellite communication antenna 32 in fig. 3, and reference may be made to the description of the satellite communication device 315 and the satellite communication antenna 32 in fig. 3, which is not described herein again.

The audio/video obtaining module 501 may correspond to the audio/video unit 413 and the audio/video codec 416 in fig. 4, and refer to the description of the audio/video unit 413 and the audio/video codec 416 in fig. 4, and correspondingly, the satellite communication module 502 may correspond to the satellite communication device 415 and the satellite communication antenna 42 in fig. 4, and refer to the description of the satellite communication device 415 and the satellite communication antenna 42 in fig. 4, which is not described herein again.

In a possible embodiment, the audio/video backhaul terminal 50 further includes: correspondingly, the audio/video acquisition module 501 further includes an audio/video codec module 5011; the audio/video coding and decoding module 5011 is configured to acquire a far-end audio/video, encode the audio/video to form an audio/video code stream, and transmit the audio/video code stream to the satellite communication module 502 through the processing module 503; the satellite communication module 502 is configured to send the audio/video code stream to an audio/video server through an skynet satellite communication system.

The processing module 503 may correspond to the ARM processor 212 in fig. 2, and reference may be made to the description of the ARM processor 212 in fig. 2, and correspondingly, the audio/video codec module 5011 corresponds to the audio/video codec 215 in fig. 2, and reference may be made to the description of the audio/video codec 215 in fig. 2, which is not described herein again.

The processing module 503 may correspond to the ARM processor 312 in fig. 3, and reference may be made to the description of the ARM processor 312 in fig. 3, and correspondingly, the audio/video codec module 5011 corresponds to the audio/video codec 316 in fig. 3, and reference may be made to the description of the audio/video codec 316 in fig. 3, which is not described herein again.

The processing module 503 may correspond to the ARM processor 412 in fig. 4, and refer to the description of the ARM processor 412 in fig. 4, and correspondingly, the audio/video codec module 5011 corresponds to the audio/video codec 416 and the audio/video unit 413 in fig. 4, and refer to the description of the audio/video codec 416 and the audio/video unit 413 in fig. 4, which is not described herein again.

In a possible embodiment, the audio/video obtaining module 501 is connected to an external camera of the composite synchronous video broadcast signal CVBS interface through an audio/video cable; the audio and video acquisition module receives the audio and video transmitted by the external camera and transmits the audio and video to the audio and video coding and decoding module in the audio and video acquisition module.

In a possible embodiment, the audio/video obtaining module 501 further includes: the audio and video acquisition module 5012 is configured to acquire a local audio and video, and transmit the audio and video to the audio and video codec module 5011 through the processing module 503.

The audio/video acquisition module 5012 may correspond to the audio/video unit 314 in fig. 3, and reference may be made to the description of the audio/video unit 314 in fig. 3, which is not described herein again.

The audio/video acquisition module 5012 may correspond to the audio/video unit 413 in fig. 4, and may refer to the description of the audio/video unit 413 in fig. 4, which is not described herein again.

In a possible embodiment of the present invention, in an embodiment of the present invention, the video backhaul terminal further includes: a power module 504 and a storage module 505; the power module 504 is configured to supply power to the audio/video backhaul terminal; and the storage module 505 is configured to store the audio and video in the audio and video return terminal 50.

The power module 504 may correspond to the power device 211 in fig. 2, refer to the description of the power device 211 in fig. 2, and the memory module 505 may correspond to the memory chip 213 in fig. 2, refer to the description of the memory chip 213 in fig. 2, and are not described herein again.

The power module 504 may correspond to the power device 311 in fig. 3, refer to the description of the power device 311 in fig. 3, and the memory module 505 may correspond to the memory chip 313 in fig. 3, refer to the description of the memory chip 313 in fig. 3, and are not described herein again.

The power module 504 may correspond to the power device 411 in fig. 4, refer to the description of the power device 411 in fig. 4, and the memory module 505 may correspond to the memory chip 414 in fig. 4, refer to the description of the memory chip 414 in fig. 4, and are not described herein again.

In one embodiment of the present invention, the memory module 505 may be a chip with two functions of LPDDR3 and e-NAND.

In one possible embodiment, the power module 504 includes a charging adapter, a charging circuit, or a rechargeable battery.

In a possible embodiment, in the specific embodiment of the utility model, the external USB device of audio video acquisition module 501, the audio video acquisition module specifically still is used for acquireing the USB device transmission audio video, and will audio video transmission extremely the audio video codec module in the audio video acquisition module. In a possible embodiment, in the embodiment of the present invention, the audio/video obtaining module 501 is externally connected to a USB device, and is specifically further configured to obtain a far-end audio/video transmitted by the USB device.

Here, it should be noted that: the above description related to the audio/video return terminal, other terminals and the audio/video server is similar to the above description of the method, and is not repeated. To the technical details of the audio/video return terminal, other terminals, and audio/video server of the present invention, please refer to the description of the method embodiment of the present invention.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In addition, the same and similar parts among the various embodiments in the specification may be referred to each other. In particular, for the embodiments of the apparatus and the hardware device, since they are substantially similar to the method embodiments, the description is simple, and the relevant points can be referred to the description in the method embodiments.

The above-described embodiments of the present invention do not limit the scope of the present invention.

Claims (10)

1. An audio and video return terminal based on an aerospace satellite communication system is characterized by comprising a host and a satellite communication antenna, wherein the host is connected with the satellite communication antenna through a radio frequency cable; wherein,

the host is used for acquiring audio and video and coding the audio and video to obtain an audio and video code stream;

and the satellite communication antenna is used for transmitting the audio and video code stream to an audio and video server or a terminal through an all-satellite communication system.

2. The audio/video backhaul terminal according to claim 1, wherein the host specifically comprises:

the satellite communication antenna is connected with the satellite communication antenna through a radio frequency cable, the ARM processor is connected with the audio and video codec through an Ethernet interface or a USB interface, and the ARM processor is connected with the satellite communication antenna through a serial interface; wherein,

the audio and video codec is used for encoding the audio and video to form an audio and video code stream and transmitting the audio and video code stream to the satellite communication device through the ARM processor;

and the satellite communication device is used for transmitting the audio and video code stream to the satellite communication antenna.

3. The audio/video return terminal according to claim 2, wherein the host is connected to an external camera of the CVBS interface through an audio/video cable;

the host is specifically used for receiving the audio and video transmitted by the external camera and transmitting the audio and video to an audio and video codec in the host.

4. The audio/video backhaul terminal according to claim 3, wherein the host is specifically configured to receive the audio/video recorded by the external camera in real time, and transmit the audio/video recorded in real time to an audio/video codec in the host.

5. An audio/video backhaul terminal according to claim 2, wherein said host further comprises: the audio and video unit is connected with the ARM processor; wherein,

the audio and video unit is used for collecting the audio and video and transmitting the audio and video to the audio and video coder-decoder through the ARM processor.

6. An audio/video backhaul terminal according to claim 5, wherein said host further comprises: the power supply device and the storage chip are respectively connected with the ARM processor; wherein,

the power supply device is used for supplying power to the audio and video return terminal;

the storage chip is used for storing the audio and video in the audio and video return terminal.

7. The audio/video backhaul terminal of claim 6, wherein the memory chip is a combination of LPDDR3 and e-NAND.

8. The audio/video return terminal of claim 6, wherein the power device comprises a charging adapter, a charging circuit, or a rechargeable battery.

9. The audio/video backhaul terminal according to claim 1, wherein the host is externally connected to a USB device, and the host is further configured to obtain the audio/video transmitted by the USB device and transmit the audio/video to an audio/video codec of the host.

10. The audio/video backhaul terminal of claim 9, wherein the satellite communication antenna is further configured to send the audio/video code stream to the audio/video server or the terminal in real time through an skyward satellite communication system.