WO2014109515A1 - Caméra usb pour dispositif sous android - Google Patents

Caméra usb pour dispositif sous android Download PDF

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Publication number
WO2014109515A1
WO2014109515A1 PCT/KR2014/000113 KR2014000113W WO2014109515A1 WO 2014109515 A1 WO2014109515 A1 WO 2014109515A1 KR 2014000113 W KR2014000113 W KR 2014000113W WO 2014109515 A1 WO2014109515 A1 WO 2014109515A1
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WO
WIPO (PCT)
Prior art keywords
usb
image
image data
android
android device
Prior art date
Application number
PCT/KR2014/000113
Other languages
English (en)
Korean (ko)
Inventor
권오봉
Original Assignee
Kwon Obong
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kwon Obong filed Critical Kwon Obong
Publication of WO2014109515A1 publication Critical patent/WO2014109515A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
    • H04N23/661—Transmitting camera control signals through networks, e.g. control via the Internet

Definitions

  • the present invention relates to a USB camera for a device using an Android operating system, and more particularly, to a USB camera for an Android device applicable to an Android device that does not support UVC (USB Video Class).
  • UVC USB Video Class
  • USB camera transmits an image signal through USB communication with a PC.
  • USB cameras have been developed to support UVC (USB Video Class), which is the international standard for which all current USB cameras follow this standard.
  • UVC describes video streaming devices and is used as a standard for webcams, digital camcorders, transcoders, analog video converters, and still image cameras, and was developed for interfacing with PCs.
  • the Android operating system still does not support the above-mentioned UVC standard.
  • it does not support USB High Speed (480Mbps), but only Full Speed (12Mbps).
  • USB High Speed 480Mbps
  • Full Speed (12Mbps)
  • An object of the present invention is to provide a USB camera for Android devices that can be used for Android devices by transmitting a compressed image signal to an Android device that does not support UVC (USB Video Class) by USB Bulk transfer method.
  • UVC USB Video Class
  • USB camera for an Android device according to an embodiment of the present invention, the image sensor; A signal compressor to compress an image signal output from the image sensor; A main control unit which controls the image sensor and the signal compression unit and converts the compressed image data into a USB bulk transmission protocol; And a USB interface for interfacing with the Android device side to transfer data of the USB Bulk transfer protocol.
  • the USB bulk transfer protocol includes a packet header, a payload length, video data, and an error detection code. CRC Value).
  • the signal compression unit compresses the image signal output from the image sensor by any one of JPEG, MJPEG, MPEG, H.263, H.264, MP4 do.
  • the USB camera for an Android device further includes an encryption module for encrypting the image data compressed by the signal compression unit.
  • the encryption module encrypts image data by applying an Advanced Encryption Standard (AES) encryption algorithm.
  • AES Advanced Encryption Standard
  • the USB camera for an Android device further includes a memory device for storing the image data compressed by the signal compression unit.
  • the USB camera for an Android device further includes a wireless interface for wirelessly transmitting image data compressed by the signal compression unit using Bluetooth or Wi-Fi.
  • the USB camera for an Android device further includes a microphone, and the main control unit transmits an audio signal input through the microphone to the Android device through the USB interface.
  • the device by compressing an image signal and converting the image signal to a USB Bulk transfer protocol, the device can be used as an external device of an Android device that does not support UVC, and the image captured by the USB camera can be smart.
  • Real-time output through a display means such as a phone has an effect that can be utilized for various purposes such as oral endoscope, industrial endoscope, learning.
  • FIG. 1 is a perspective view showing a state of use of an embodiment of a USB camera according to the present invention.
  • FIG. 2 is a block diagram schematically showing the configuration of a USB camera according to the present invention.
  • ⁇ means a unit for processing at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. Can be.
  • a part is electrically connected to another part, this includes not only the case where it is directly connected, but also the case where it is connected through the other structure in the middle.
  • FIG. 1 is a perspective view showing a state of use of an embodiment of a USB camera according to the present invention, showing the external structure of the USB camera used as an endoscope.
  • the USB camera of the present invention has an appearance configuration of a camera unit 12, a hand unit 14, and a USB connector 24.
  • a lens 10 for focusing a subject is provided in front of the camera unit 12.
  • the image sensor 50 is installed inside the housing of the camera unit 12.
  • an AF (auto focus) device, an optical zoom device, or the like may be additionally installed inside the housing of the camera unit 12.
  • the camera unit 12 and the hand unit 14 are separately formed as shown in FIG. 1 and are connected by mutual flexible cables 20.
  • the hand unit 14 has an appropriate length so that a user can hold it, and has a photographing button 16 and a zoom control key 18 at the tip.
  • the shooting button 16 is a button for selecting shooting
  • the zoom adjusting key 18 is a scroll key for adjusting the zoom magnification.
  • Zoom control of the camera unit 12 may be performed in an optical manner or digitally by the main control unit 54 described later.
  • a USB cable 22 is connected to the other end of the hand unit 14, and a USB connector 24 is mounted to the USB cable 22. As shown, the USB connector 24 can be inserted into the USB port 32 of the Android device 30 to connect the USB camera to the Android device.
  • the Android device 30 is, for example, a smartphone equipped with an Android operating system. Here, it is assumed that the Android device 30 does not support the UVC (USB Video Class) standard and USB High Speed (480Mbps).
  • the image sensor 50 is, for example, a charge coupled device (CCD) image sensor or a CMOS image sensor (CIS). Of course, the image sensor 50 is not limited thereto.
  • CCD charge coupled device
  • CIS CMOS image sensor
  • lighting means 78 is provided for illumination at night when the lens 10 of the camera unit 12 is circumscribed.
  • the luminaire 78 is a high brightness LED, for example.
  • the high brightness LED is dimmed by the LED driver 76 to adjust the brightness step by step.
  • the image signal detected by the image sensor 50 is converted into a digital signal by the AD converter 51 and compressed by the JPEG encoder 52.
  • the method of compressing the image signal may use other methods such as MJPEG (Motion JPEG), MPEG, H.263, H.264, MP4 and the like.
  • the main control unit 54 controls the operation of the image sensor 50 and the JPEG encoder 52. In addition, the main control unit 54 converts the compressed image data into a USB bulk transfer protocol and transmits the compressed image data to the Android device 30.
  • the USB interface 58 is used for interfacing with the Android device 30.
  • the USB bulk transfer protocol includes a packet header, a payload length, video data, and an error detection code (CRC value).
  • Cyclic Redundancy Check (CRC) Value is an error detection code used to identify data transmission errors in the protocol.
  • the USB camera for an Android device of the present invention includes an encryption module 62 to encrypt and protect image data.
  • the encryption module 62 applies the Advanced Encryption Standard (AES) encryption algorithm to encrypt the image data. If the encryption module 62 encrypts a part or the entirety of the image data using a predetermined key and then transmits the encrypted data to the Android device, the Android device may use the promised key to solve the encrypted data.
  • AES Advanced Encryption Standard
  • the USB camera of the present invention may further include a memory device 56 to store image data itself.
  • the main control unit 54 may control to transmit image data stored in the memory device 56 to the Android device 30 when the USB camera is connected to the Android device 30.
  • a GUI Graphic User Interface
  • TUI Touch User Interface
  • the memory device 56 may be implemented as a flash memory embedded in a USB camera or an external microSD card.
  • the USB camera may further include a wireless interface 60 to transmit image data using Bluetooth or Wi-Fi.
  • the microphone 72 may be installed to transmit an audio signal to the captured image signal.
  • the audio signal may be compressed and transmitted by the audio encoder 74 or may be transmitted uncompressed.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)

Abstract

La présente invention concerne une caméra USB destinée à un dispositif utilisant le système d'exploitation Android, comprenant: un capteur d'image; une unité de compression de signal servant à comprimer un signal d'image émanant du capteur d'image; une unité de commande principale servant à commander le capteur d'image et l'unité de compression de signal de façon à convertir les données d'image comprimées selon le protocole USB de transmission en masse; et une interface USB servant à interfacer un dispositif sous Android de façon à émettre les données du protocole USB de transmission en masse. Selon la présente invention, la caméra USB comprime des données d'images converties selon le protocole USB de transmission en masse et émises vers un dispositif sous Android, de telle façon que la caméra USB puisse être utilisée pour un dispositif sous Android, et reliée à un ordiphone ou similaire pour divers usages comme l'endoscopie orale, l'endoscopie industrielle et l'apprentissage.
PCT/KR2014/000113 2013-01-08 2014-01-07 Caméra usb pour dispositif sous android WO2014109515A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2013-0002111 2013-01-08
KR20130002111 2013-01-08

Publications (1)

Publication Number Publication Date
WO2014109515A1 true WO2014109515A1 (fr) 2014-07-17

Family

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Application Number Title Priority Date Filing Date
PCT/KR2014/000113 WO2014109515A1 (fr) 2013-01-08 2014-01-07 Caméra usb pour dispositif sous android

Country Status (1)

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WO (1) WO2014109515A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104133711A (zh) * 2014-08-07 2014-11-05 深圳市元征科技股份有限公司 基于Android系统的摄像头安全切换方法
CN106027884A (zh) * 2016-05-17 2016-10-12 福建星网锐捷通讯股份有限公司 一种android设备使用USB摄像头的方法及系统
WO2018136103A1 (fr) * 2016-03-18 2018-07-26 Ryan Fuller Système de caméra portable
CN109885511A (zh) * 2019-01-24 2019-06-14 苏州随闻智能科技有限公司 一种uvc设备配对的方法及uvc设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070008747A (ko) * 2005-07-12 2007-01-18 박원일 유에스비 메모리 탑재형 디지털 영상 저장 장치 및 그 제어방법
JP2008060704A (ja) * 2006-08-29 2008-03-13 Sony Corp 通信システム、データ提供装置、電子機器、制御方法、およびプログラム
KR20120126595A (ko) * 2011-05-12 2012-11-21 주식회사 디엠티 Ｕｓｂ 카메라 장치

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070008747A (ko) * 2005-07-12 2007-01-18 박원일 유에스비 메모리 탑재형 디지털 영상 저장 장치 및 그 제어방법
JP2008060704A (ja) * 2006-08-29 2008-03-13 Sony Corp 通信システム、データ提供装置、電子機器、制御方法、およびプログラム
KR20120126595A (ko) * 2011-05-12 2012-11-21 주식회사 디엠티 Ｕｓｂ 카메라 장치

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104133711A (zh) * 2014-08-07 2014-11-05 深圳市元征科技股份有限公司 基于Android系统的摄像头安全切换方法
WO2018136103A1 (fr) * 2016-03-18 2018-07-26 Ryan Fuller Système de caméra portable
US11558538B2 (en) 2016-03-18 2023-01-17 Opkix, Inc. Portable camera system
CN106027884A (zh) * 2016-05-17 2016-10-12 福建星网锐捷通讯股份有限公司 一种android设备使用USB摄像头的方法及系统
CN109885511A (zh) * 2019-01-24 2019-06-14 苏州随闻智能科技有限公司 一种uvc设备配对的方法及uvc设备

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