WO2017219638A1 - 信号转接设备及投影系统 - Google Patents

信号转接设备及投影系统 Download PDF

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Publication number
WO2017219638A1
WO2017219638A1 PCT/CN2016/113084 CN2016113084W WO2017219638A1 WO 2017219638 A1 WO2017219638 A1 WO 2017219638A1 CN 2016113084 W CN2016113084 W CN 2016113084W WO 2017219638 A1 WO2017219638 A1 WO 2017219638A1
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conversion
interface
type
signal
mobile terminal
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PCT/CN2016/113084
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English (en)
French (fr)
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魏洋洋
黄凌
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广州视源电子科技股份有限公司
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Publication of WO2017219638A1 publication Critical patent/WO2017219638A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor

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  • the present invention relates to the field of multimedia technologies, and in particular, to a signal switching device and a projection system.
  • Gao Paiyi In daily office and education work, it is usually necessary to use Gao Paiyi to take pictures or videos and play them through large screen projection.
  • the traditional Gao Paiyi is usually implemented by hardware such as camera module and DSP (digital signal processing).
  • the camera module and DSP are fixed on the hardware platform.
  • the DSP can be connected to an external display screen. After the camera module captures video or image. Sended to the DSP, the DSP or video is processed and output to the display screen for wiring harness.
  • the traditional Gao Paiyi has a high cost due to the high performance DSP, resulting in high cost of the Gao Paiyi.
  • a signal switching device includes a conversion device, a first conversion interface, a second conversion interface, and a power interface, and the conversion device is connected to the first conversion interface, the second conversion interface, and the power interface;
  • the first conversion interface is configured to connect to the mobile terminal
  • the second conversion interface is used to connect to the playback device
  • the power interface is connected to an external power source to supply power to the conversion device
  • the mobile terminal passes the first conversion interface.
  • the first type is an interface protocol type of the first conversion interface
  • the second type is an interface protocol type of the second conversion interface.
  • the conversion device is connected to the mobile terminal by using the first conversion interface, and the playback device is connected by using the second conversion interface, and the conversion device receives the mobile terminal transmission through the first conversion interface.
  • the playback signal is output through the second conversion interface for the playback device to play, and the projection and retransmission of the media signal between different devices can be realized.
  • the signal switching device of the invention can be transferred by using a mobile terminal for shooting, without fixing, can be used by hand, is flexible and convenient to operate, is convenient for user operation, and does not need to purchase other hardware products such as DSP, and has low cost.
  • a projection system comprising a playback device, a mobile terminal and the above-mentioned signal switching device, wherein the mobile terminal is connected to a conversion device of the signal switching device via a first conversion interface, and the playback device is connected to the second conversion interface a switching device of the signal switching device, the mobile terminal outputs a first type of media signal to the converting device, and the playing device receives the second type of playing signal output by the converting device and plays the same.
  • the above projection system adopts the above-mentioned signal switching device, and the same reason can realize the hand-held shooting use, the operation is flexible and convenient, the user is convenient to operate, and the cost is low.
  • FIG. 1 is a block diagram showing the structure of a signal switching device in an embodiment
  • FIG. 2 is a block diagram showing the structure of a projection system in an embodiment
  • FIG. 3 is a block diagram showing the structure of a projection system in another embodiment.
  • a signal switching device in an embodiment includes a first conversion interface 110 , a second conversion interface 120 , a conversion device 130 , and a power interface 150 .
  • the conversion device 130 is connected to the first conversion interface 110 and the second conversion interface 120 .
  • power interface 150 The first conversion interface 110 is used to connect to the mobile terminal, the second conversion interface 120 is used to connect to the playback device, the power interface 150 is connected to the external power source to supply power to the conversion device 130, and the mobile terminal outputs the first type of media signal through the first conversion interface 110.
  • the conversion device 130 receives the first type of media signal and outputs a second type of playback signal recognizable by the playback device to the playback device via the second conversion interface 120.
  • the first type is an interface protocol type of the first conversion interface 110
  • the second type is an interface protocol type of the second conversion interface 120.
  • the type conversion of the media signal by the conversion device 130 refers to conversion according to the interface protocol type, and a well-known technique can be employed.
  • the first type of media signal includes at least one of a picture signal, an audio signal, and a video signal.
  • the mobile terminal may acquire a picture signal by taking a picture, and acquire an audio signal and a video signal by capturing a video.
  • the converting device 130 can be configured to: after receiving the first type of media signal, convert the first type of media signal to obtain a playback signal recognizable by the playback device, thereby implementing output of the media signal.
  • the first conversion interface 110 includes at least one of an MIPI (Mobile Industry Processor Interface) and an I 2 S (Inter-IC Sound Integrated Circuit Integrated Audio Bus) interface
  • the conversion device 130 passes At least one of the MIPI and I 2 S interfaces is connected to the mobile terminal.
  • the MIPI connects the mobile terminal and the conversion device 130, and the signal transmission channel is a video signal transmission channel
  • the I 2 S interface is connected to the mobile terminal and the conversion device 130
  • the signal transmission channel is an audio signal transmission channel.
  • the mobile terminal and the conversion device 130 may be connected through an I 2 S interface; when the video signal includes a video signal, the mobile terminal and the conversion device 130 may be connected through the MIPI; when the media signal includes audio In both the signal and video signals, the mobile terminal and the switching device 130 are connected through the MIPI and I 2 S interfaces.
  • the second conversion interface 120 is a USB interface.
  • the signal switching device further includes a power module (not shown), and the power module is connected to the conversion device 130 through the power interface 150.
  • the switching device 130 connects the mobile terminal by using the first conversion interface 110, and connects the playback device with the second conversion interface 120.
  • the conversion device 130 receives the first type of media signal output by the mobile terminal through the first conversion interface 110.
  • the second type of play signal is output through the second conversion interface 120 for the playback device to play, and the projection and retransmission of the media signal between different devices can be implemented.
  • the signal switching device of the invention can be transferred by using a mobile terminal for shooting, without fixing, can be used by hand, is flexible and convenient to operate, is convenient for user operation, and does not need to purchase other hardware products such as DSP, and has low cost.
  • the projection system in an embodiment includes a mobile terminal 160, a playback device 170, and the above-mentioned signal switching device.
  • the mobile terminal 160 is connected to the conversion device 130 of the signal switching device through the first conversion interface 110, and the playback device 170 passes.
  • the second conversion interface 120 is connected to the turn of the signal switching device In the device 130, the mobile terminal 160 outputs a first type of media signal to the conversion device 130, and the playback device 170 receives the second type of playback signal output by the conversion device 130 and plays it.
  • the mobile terminal 160 includes a camera 161 and a main board 163.
  • the main board 163 is connected to the camera 161, and the conversion device 130 is connected through the first conversion interface 110.
  • the camera 161 outputs a first type of media signal to the main board 163, and the main board 163 forwards the first type of media signal to the conversion device 130.
  • the main board 163 connects the conversion device 130 through at least one of the MIPI and I 2 S interfaces. Specifically, the camera 161 obtains a media signal by taking an image or video. By constituting the mobile terminal 160 by the camera 161 and the main board 163, the acquisition and output of the media signal can be realized, and the volume is small and portable.
  • the main board 163 is connected to the camera 161 by MIPI.
  • the main board 163 is connected to the camera 161 via MIPI to receive the media signal, and the other port is connected to the conversion device 130 through the MIPI to output the media signal.
  • the same interface is adopted through the input and output, and the interface protocol is the same, so that no signal type conversion is required, and the processing speed is fast. .
  • the mobile terminal 160 further includes a touch screen 165 connected to the main board 163. After receiving the touch command through the touch screen 165, the main board 163 outputs a first type of media signal corresponding to the touch command. To the conversion device 130.
  • a touch command refers to an instruction for selecting an output content of a media signal.
  • the main board 163 outputs all the media signals acquired by the camera 161 to the touch screen 165 for display for the user to view the selection. Then, the main board 163 detects the touch operation on the touch screen 165 to obtain a control command, and obtains the selected media signal from all the media signals and outputs the same to the conversion device 130 according to the touch instruction. In this way, by providing the touch screen 165 on the mobile terminal 160, the user can select the user, and the user can operate and use it to enhance the practicability.
  • the mobile terminal 160 is a cell phone or a tablet.
  • Mobile phones, tablets, etc. can be used for fixed, handheld recording and shooting.
  • the hardware cost is low, the volume is small, and the operation is flexible and convenient.
  • the playback device 170 is configured to play the playback signal output by the conversion device 130.
  • the playback device 170 includes at least one of a display screen and a speaker.
  • the display screen is coupled to the conversion device 130 via a second conversion interface 120
  • the speaker is coupled to the conversion device 130 via a second conversion interface 120.
  • the display is used to play video and the speakers are used to play audio.
  • the playback device 170 is a PC. (Personal Computer) or Android (Android) devices, PC or Android devices have applications that can read audio and video signals, such as amcap (video capture program) software.
  • the above projection system adopts the above-mentioned signal switching device, and the same reason can realize the hand-held shooting use, the operation is flexible and convenient, the user is convenient to operate, and the cost is low.
  • the above projection system can be applied to bank file display, conference content display, educational topic display, etc.
  • the working process of the projection system is: the conversion device 130 establishes a handshake protocol with the mobile terminal 160, and moves through a standard communication protocol (serial port or I 2 S).
  • the terminal 160 communicates, and invokes the media signal of the mobile terminal 160 through the MIPI and I 2 S interfaces; the converting device 130 converts the received media signal into a playback signal that can be output by the USB interface to the playback device 170; and the playback device 170 plays the received playback signal.
  • the media signal may be stored by the mobile terminal 160 or may be acquired by the mobile terminal 160 in real time.
  • the teacher is doing an actual operation, and may be sent to the playback device through the conversion device 130 after the operation process is performed on the lectern through the mobile terminal 160. 170 direct live broadcast, students can watch in the seat.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Information Transfer Between Computers (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

本发明涉及一种信号转接设备及投影系统，信号转接设备包括转换装置、第一转换接第二转换接口和电源接口；第一转换接口用于连接移动终端，第二转换接口用于连接播放装置，电源接口接入外部电源对转换装置供电，移动终端通过第一转换接口输出第一类型的媒体信号至转换装置，转换装置接收第一类型的媒体信号并通过第二转换接口输出播放装置可识别的第二类型的播放信号至所述播放装置，以便播放装置进行播放，第一类型为第一转换接口的接口协议类型，第二类型为第二转换接口的接口协议类型。本发明可以手持使用，操作更加灵活便捷，方便用户操作，且无需另外购买DSP等其他硬件产品，成本低。

Description

信号转接设备及投影系统 技术领域
本发明涉及多媒体技术领域，特别是涉及一种信号转接设备及投影系统。
背景技术
日常办公、教育工作中，通常需要用到高拍仪拍摄图片或视频并通过大屏幕投影播放。
传统的高拍仪通常由摄像头模组、DSP(digital signal processing数字信号处理)等硬件实现，摄像头模组和DSP固定于硬件平台，DSP可连接外部的显示屏幕，摄像头模组拍摄视频或图像后发送至DSP，由DSP对视频或图像进行处理后输出至显示屏幕进行线束。传统的高拍仪由于高性能的DSP成本较高，导致高拍仪成本高。
发明内容
基于此，有必要针对上述问题，提供一种低成本的信号转接设备及投影系统。
一种信号转接设备，包括转换装置、第一转换接口、第二转换接口和电源接口，所述转换装置连接所述第一转换接口、所述第二转换接口和所述电源接口；
所述第一转换接口用于连接移动终端，所述第二转换接口用于连接播放装置，所述电源接口接入外部电源对所述转换装置供电，所述移动终端通过所述第一转换接口输出第一类型的媒体信号至所述转换装置，所述转换装置接收所述第一类型的媒体信号，并通过所述第二转换接口输出所述播放装置可识别的第二类型的播放信号至所述播放装置，所述第一类型为所述第一转换接口的接口协议类型，所述第二类型为所述第二转换接口的接口协议类型。
上述信号转接设备，转换装置通过采用第一转换接口连接移动终端、采用第二转换接口连接播放装置，转换装置通过第一转换接口接收移动终端输 出的第一类型的媒体信号后，通过第二转换接口输出播放信号以供播放装置进行播放，可以实现不同设备之间媒体信号的投影、转播。本发明的信号转接设备可以转接采用移动终端进行拍摄，无需固定，可以手持使用，操作灵活便捷，方便用户操作，且无需另外购买DSP等其他硬件产品，成本低。
一种投影系统，包括播放装置、移动终端和上述信号转接设备，所述移动终端通过第一转换接口连接所述信号转接设备的转换装置，所述播放装置通过第二转换接口连接所述信号转接设备的转换装置，所述移动终端输出第一类型的媒体信号至所述转换装置，所述播放装置接收所述转换装置输出的所述第二类型的播放信号并进行播放。
上述投影系统，由于采用了上述信号转接设备，同理可以实现手持拍摄使用，操作灵活便捷，方便用户操作，且成本低。
附图说明
图1为一实施例中信号转接设备的结构框图；
图2为一实施例中投影系统的结构框图；
图3为另一实施例中投影系统的结构框图。
具体实施方式
参考图1，一实施例中的信号转接设备，包括第一转换接口110、第二转换接口120、转换装置130和电源接口150，转换装置130连接第一转换接口110、第二转换接口120和电源接口150。第一转换接口110用于连接移动终端，第二转换接口120用于连接播放装置，电源接口150接入外部电源对转换装置130供电；移动终端通过第一转换接口110输出第一类型的媒体信号至转换装置130，转换装置130接收第一类型的媒体信号，并通过第二转换接口120输出播放装置可识别的第二类型的播放信号至播放装置。其中，第一类型为第一转换接口110的接口协议类型，第二类型为第二转换接口120的接口协议类型。转换装置130对媒体信号的类型转换指根据接口协议类型进行的转换，可采用公知的技术。
第一类型的媒体信号包括图片信号、音频信号和视频信号中的至少一种。移动终端可以是通过拍摄图片获取图片信号、通过拍摄视频获取音频信号和视频信号。转换装置130可以用于接收第一类型的媒体信号后，对第一类型的媒体信号进行转换得到播放装置可识别的播放信号，从而实现媒体信号的输出。
在一实施例中，第一转换接口110包括MIPI(Mobile Industry Processor Interface移动产业处理器接口)和I2S(Inter-IC Sound集成电路内置音频总线)接口中的至少一种，转换装置130通过MIPI和I2S接口中的至少一种连接移动终端。MIPI连接移动终端和转换装置130，其信号传输通道为视频信号传输通道，I2S接口连接移动终端和转换装置130，其信号传输通道为音频信号传输通道。当媒体信号中仅包括音频信号时，移动终端和转换装置130可通过I2S接口连接；当媒体信号中包括视频信号时，移动终端和转换装置130可通过MIPI连接；当媒体信号中包含音频信号和视频信号两种时，移动终端和转换装置130通过MIPI和I2S接口连接。
在一实施例中，第二转换接口120为USB接口。
在一实施例中，上述信号转接设备还包括电源模块(图未示)，电源模块通过电源接口150连接转换装置130。
上述信号转接设备，转换装置130通过采用第一转换接口110连接移动终端、采用第二转换接口120连接播放装置，转换装置130通过第一转换接口110接收移动终端输出的第一类型的媒体信号后，通过第二转换接口120输出第二类型的播放信号以供播放装置播放，可以实现不同设备之间媒体信号的投影、转播。本发明的信号转接设备可以转接采用移动终端进行拍摄，无需固定，可以手持使用，操作灵活便捷，方便用户操作，且无需另外购买DSP等其他硬件产品，成本低。
参考图2，一实施例中的投影系统，包括移动终端160、播放装置170和上述信号转接设备，移动终端160通过第一转换接口110连接信号转接设备的转换装置130，播放装置170通过第二转换接口120连接信号转接设备的转 换装置130，移动终端160输出第一类型的媒体信号至转换装置130，播放装置170接收转换装置130输出的第二类型的播放信号并进行播放。
在一实施例中，参考图3，移动终端160包括摄像头161和主板163，主板163连接摄像头161，且通过第一转换接口110连接转换装置130。摄像头161输出第一类型的媒体信号至主板163，主板163将第一类型的媒体信号转发至转换装置130。主板163通过MIPI和I2S接口中的至少一种连接转换装置130。具体地，摄像头161通过拍摄图像或视频以获得媒体信号。通过摄像头161和主板163组成构成移动终端160，可以实现媒体信号的获取和输出，且体积小、便于携带。
在一实施例中，主板163通过MIPI连接摄像头161。主板163一端口通过MIPI连接摄像头161以接收媒体信号，另一端口通过MIPI连接转换装置130以输出媒体信号，通过输入和输出采用同样的接口，接口协议相同，从而无需信号类型转换，处理速率快。
在一实施例中，继续参考图2，移动终端160还包括连接主板163的触控屏165；主板163通过触控屏165接收触控指令后，输出对应触控指令的第一类型的媒体信号至转换装置130。
触控指令指用于选择媒体信号的输出内容的指令。例如，当使用移动终端160输出媒体信号至转换装置130时，主板163将摄像头161获取的所有媒体信号输出至触控屏165显示，以便用户查看选择。然后主板163检测触控屏165上的触控操作得到出控制指令，根据该触控指令从所有媒体信号中获取选中的媒体信号输出至转换装置130。如此，通过在移动终端160上设置触控屏165，可以方便用户选择，便于用户操作和使用，增强实用性。
在一实施例中，移动终端160为手机或平板。手机、平板等可以实现固定、手持录制和拍摄使用，硬件成本很低，且体积小，操作起来灵活、便捷。
播放装置170用于播放转换装置130输出的播放信号。在一实施例中，播放装置170包括显示屏和扬声器中的至少一种，显示屏通过第二转换接口120连接转换装置130，扬声器通过第二转换接口120连接转换装置130。显示屏用于播放视频，扬声器用于播放音频。本实施例中，播放装置170为PC (Personal Computer个人电脑)或者Android(安卓)系统的设备，PC或者Android系统的设备上安装有可以读取音视频信号的应用软件，例如amcap(视频捕捉程序)软件。
上述投影系统，由于采用了上述信号转接设备，同理可以实现手持拍摄使用，操作灵活便捷，方便用户操作，且成本低。
上述投影系统可以应用于银行文件展示、会议内容展示、教育课题展示等，投影系统的工作过程为：转换装置130与移动终端160建立握手协议，通过标准通讯协议(串口或者I2S)与移动终端160通讯，通过MIPI和I2S接口调用移动终端160的媒体信号；转换装置130把接收的媒体信号转换成可以由USB接口输出的播放信号至播放装置170；播放装置170播放接收的播放信号，用于授课或者银行拍摄文档保存。媒体信号可以是移动终端160存储的，也可以是移动终端160实时录像获取的，例如：老师在做一个实际操作，可以在讲台上通过移动终端160拍摄操作过程后通过转换装置130发送至播放装置170进行直接现场播放，学生在座位可以观看。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种信号转接设备，其特征在于，包括转换装置、第一转换接口、第二转换接口和电源接口，所述转换装置连接所述第一转换接口、所述第二转换接口和所述电源接口；
    所述第一转换接口用于连接移动终端，所述第二转换接口用于连接播放装置，所述电源接口接入外部电源对所述转换装置供电，所述移动终端通过所述第一转换接口输出第一类型的媒体信号至所述转换装置，所述转换装置接收所述第一类型的媒体信号，并通过所述第二转换接口输出所述播放装置可识别的第二类型的播放信号至所述播放装置，所述第一类型为所述所述第一转换接口的接口协议类型，所述第二类型为所述第二转换接口的接口协议类型。
  2. 根据权利要求1所述的信号转接设备，其特征在于，所述第一转换接口包括MIPI和I2S接口中的至少一种，所述转换装置通过所述MIPI和所述I2S接口中的至少一种连接所述移动终端。
  3. 根据权利要求1所述的信号转接设备，其特征在于，所述第二转换接口为USB接口。
  4. 根据权利要求1所述的信号转接设备，其特征在于，还包括电源模块，所述电源模块通过所述电源接口连接所述转换装置。
  5. 一种投影系统，其特征在于，包括播放装置、移动终端和权利要求1-4任一项所述的信号转接设备，所述移动终端通过第一转换接口连接所述信号转接设备的转换装置，所述播放装置通过第二转换接口连接所述信号转接设备的转换装置，所述移动终端输出第一类型的媒体信号至所述转换装置，所述播放装置接收所述转换装置输出的第二类型的播放信号并进行播放。
  6. 根据权利要求5所述的投影系统，其特征在于，所述移动终端包括摄像头和主板，所述主板连接所述摄像头，且通过所述第一转换接口连接所述转换装置；
    所述摄像头输出所述第一类型的媒体信号至所述主板，所述主板将所述第一类型的媒体信号转发至所述转换装置。
  7. 根据权利要求6所述的投影系统，其特征在于，所述移动终端还包括连接所述主板的触控屏；
    所述主板通过所述触控屏接收触控指令后，输出对应所述触控指令的第一类型的媒体信号至所述转换装置。
  8. 根据权利要求6所述的投影系统，其特征在于，所述主板通过MIPI连接所述摄像头。
  9. 根据权利要求5所述的投影系统，其特征在于，所述移动终端为手机或平板。
  10. 根据权利要求5所述的投影系统，其特征在于，所述播放装置包括显示屏和扬声器中的至少一种，所述显示屏通过所述第二转换接口连接所述转换装置，所述扬声器通过所述第二转换接口连接所述转换装置。
PCT/CN2016/113084 2016-06-24 2016-12-29 信号转接设备及投影系统 WO2017219638A1 (zh)

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