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    • 36. 发明授权
    • Standard converting apparatus
    • 标准转换装置
    • US4751573A
    • 1988-06-14
    • US7192
    • 1987-01-27
    • Tatsuya Kubota
    • Tatsuya Kubota
    • H04N7/01
    • H04N7/0135H04N7/0125
    • In a standard converting apparatus for converting a television signal of the high definition television standard, for example, into that of the NTSC standard, data of an odd field and an even field of the NTSC standard are developed from data of one field of the high definition television standard and stored into memories. The stored data of the odd and even fields are consecutively read out to effect the reproduction of a still picture or slow reproduction. Because the reproduction of the still picture and the slow reproduction are achieved using one frame data of the odd field and even field, the picture becomes distinct. Also, since the odd and even fields are developed from the data of one field, double images are not reproduced even if picture movement occurs.
    • 在用于将高分辨率电视标准的电视信号转换为NTSC标准的电视信号的标准转换装置中,NTSC标准的奇数场和偶数场的数据是从一个高场的数据 定义电视标准并存储到存储器中。 连续地读出奇数和偶数场的存储数据,以实现静止图像的再现或慢速再现。 由于使用奇数场和偶数场的一帧数据来实现静止图像的再现和慢再现,所以图像变得不同。 此外,由于奇数和偶数场是从一个场的数据展开的,即使图像移动发生,也不会再现双重图像。
    • 37. 发明授权
    • Video signal control circuit
    • 视频信号控制电路
    • US4698676A
    • 1987-10-06
    • US850551
    • 1986-04-11
    • Tatsuya KubotaKenji Takanashi
    • Tatsuya KubotaKenji Takanashi
    • H04N5/073H04N7/01
    • H04N7/0137H04N5/0736H04N7/0105
    • A video signal control circuit having a memory, a write address generator for generating a write address data supplied to the memory, by which an input digital video signal is written in the memory at the address represented by the write address data, a read address generator for generating a read address data supplied to the memory, by which a controlled digital video signal is read out from the memory at the address represented by the read address data, an address comparator for comparing the write and read address data and for generating a compared output pulse, a timing pulse generator for generating first and second timing pulses, each of which has a predetermined pulse duration, a still picture detector supplied with the input digital video signal and for detecting whether the input digital video signal represents a still picture or not, a write address controller supplied with the compared output pulse, the first timing pulse and the output of the still picture detector and for controlling the write address generator when the pulse duration of the compared output pulse is shorter than that of said first timing pulse and the still picture detector detects that the input digital video signal represents a still picture, and a read address controller supplied with the compared output pulse, the second timing pulse and the output of the still picture detector and for controlling the read address generator when the pulse duration of the compared output pulse is shorter than that of the second timing pulse and the still picture detector means detects that the input digital video signal represents a still picture.
    • 具有存储器的视频信号控制电路,用于产生提供给存储器的写入地址数据的写入地址发生器,通过该存储器将输入数字视频信号以写入地址数据表示的地址写入存储器中,读取地址生成器 用于产生提供给存储器的读取地址数据,通过该读取地址数据从存储器中以由读取的地址数据表示的地址读出受控数字视频信号;地址比较器,用于比较写和读地址数据,并用于产生比较 输出脉冲;定时脉冲发生器,用于产生每个具有预定脉冲持续时间的第一和第二定时脉冲;静态图像检测器,被提供有输入数字视频信号,并用于检测输入的数字视频信号是否表示静止图像 ,写入地址控制器,其提供有比较的输出脉冲,第一定时脉冲和静止图像检测器的输出 当比较输出脉冲的脉冲持续时间短于所述第一定时脉冲的脉冲持续时间时,控制写入地址发生器,并且静止图像检测器检测到输入数字视频信号表示静止图像,并且读取地址控制器提供比较输出 脉冲,第二定时脉冲和静止图像检测器的输出,并且当比较的输出脉冲的脉冲持续时间短于第二定时脉冲的脉冲持续时间时控制读取地址发生器,并且静止图像检测器装置检测输入的数字 视频信号表示静止图像。