会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 27. 发明公开
    • IMAGING DEVICE AND LENS FOCUSING METHOD
    • EP3690544A1
    • 2020-08-05
    • EP18863571.8
    • 2018-06-14
    • Hangzhou Hikvision Digital Technology Co., Ltd.
    • YUAN, Weijun
    • G03B13/36G02B7/28
    • An imaging device and a lens focusing method. The imaging device comprises a focusing wheel (1901), two photoelectric sensors (1902), at least three gratings (1903), a processor (1904), a motor (1905), and a lens (1906), the gratings (1903) are distributed on an inner sidewall of the focusing wheel (1901), grating gaps having a same width exist between adjacent gratings (1903). The processor (1904) determines a first electrical signal generated by a first photoelectric sensor (1902) and a second electrical signal generated by a second photoelectric sensor (1902); determines a current rotation direction of the focusing wheel (1901) based on the first electrical signal and the second electrical signal as well as a preset parameter table; and finally determines a current rotation angle of the focusing wheel (1901) based on the number of level jumps of the first electrical signal or the second electrical signal, the level jump of the first electrical signal or the second electrical signal includes a jump from high level to low level and a jump from low level to high level. By applying the above device and method, manual focusing of the lens (1906) can be achieved by means of photoelectric sensors (1902).
    • 30. 发明公开
    • SIGNAL TRANSMISSION SYSTEM AND SIGNAL TRANSMISSION METHOD
    • EP3661193A1
    • 2020-06-03
    • EP18849213.6
    • 2018-08-15
    • Hangzhou Hikvision Digital Technology Co., Ltd.
    • YE, MinLUO, MinglingZHANG, SienZHANG, Liang
    • H04N7/10H04B3/54
    • The present application relates to a signal transmission system and a signal transmission method pertaining to the technical field of video surveillance. The Signal transmission system comprises: a power supply, a power supplying end device, and a power receiving end device; a first active inductor module for transmitting a DC signal to the power receiving end device by means of a coaxial cable; a first capacitor module for transmitting a superimposed signal to a signal processing module; a second active inductor module for receiving the DC signal from the power supplying end device by means of the coaxial cable, and for transmitting the DC signal to a signal collection module; the signal collection module for transmitting the superimposed signal to a second capacitor module; and the second capacitor module for transmitting the superimposed signal to the power supplying end device. In the present application, the first active inductor module transmits a DC signal to the power receiving end device, and the second active inductor module receives the DC signal, such that the power supplying end device receives a superimposed signal while simultaneously supplying power to the power receiving end device without requiring a wire to be provided between the power receiving end device and the power supply, thereby reducing costs.