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    • 1. 发明授权
    • Video storage type communication device
    • 视频存储型通信设备
    • US07181125B2
    • 2007-02-20
    • US10040488
    • 2002-01-09
    • Hirotaka NakanoOsamu NakamuraYouji KanadaTsuneko KuraTakashi OshimaTadashi UchiumiKeiichi HibiJiro NakabayashiTsuneaki IwanoNobuyuki Ema
    • Hirotaka NakanoOsamu NakamuraYouji KanadaTsuneko KuraTakashi OshimaTadashi UchiumiKeiichi HibiJiro NakabayashiTsuneaki IwanoNobuyuki Ema
    • H04N5/783
    • H04N5/783H04N9/8042H04N9/8227H04N19/107H04N19/132H04N19/146H04N19/152H04N19/164H04N19/172H04N19/30H04N19/40H04N19/587H04N19/60H04N19/61
    • A device which is capable of storing moving picture data received from each terminal and providing each terminal with video information to be reproducible by rapidly forwarding or reversing at any desired speed independent of usable terminals. A video storage type communication device 30 with a receiving portion 35 and a transmitting portion 38 transmits and receives video data over a communication network 10 to and from each terminal 1–n. A coded video data received from terminals 1–n is stored as it is in a first storage portion 32 and, at the same time, the data converted into specially reproducible video information is stored in the second storage portion 33. At the time of reproducing, the reproduction control portion 35 controls the reproduction selector switch 36 to obtain the video data from the first storage portion 32 or the second storage portion 33, changing the reproduction mode from ordinary to the rapid forwarding/reversing and vice versa. The specially reproducible video generating portion 34 successively restores coded video data received through the receiving portion 31, encodes again the restored data by intraframe, interframe or still-picture coding method to generate video information to be reproducible in special mode such as reproduction by rapid forwarding or reversing.
    • 一种能够存储从每个终端接收的运动图像数据的装置,并且通过以与可用终端无关的任何期望的速度快速转发或反转,为每个终端提供可重现的视频信息。 具有接收部分35和发送部分38的视频存储型通信装置30通过通信网络10向每个终端1- n发送和接收视频数据。 从终端1- n接收的编码视频数据被原样存储在第一存储部分32中,并且同时将转换成特别可重现的视频信息的数据存储在第二存储部分33中。在再现时 ,再现控制部分35控制再现选择开关36从第一存储部分32或第二存储部分33获得视频数据,将再现模式从普通转换到快速转发/反转,反之亦然。 特殊可重现的视频产生部分34连续地恢复通过接收部分31接收的编码视频数据,并通过帧内,帧间或静止图像编码方法再次对恢复的数据进行编码,以产生可在特殊模式下再现的视频信息,例如通过快速转发 或反转。
    • 2. 发明授权
    • Video storage type communication device
    • 视频存储型通信设备
    • US06360054B1
    • 2002-03-19
    • US09475133
    • 1999-12-30
    • Hirotaka NakanoOsamu HakamuraYouji KanadaTsuneko KuraTakashi OshimaTadashi UchiumiKeiichi HibiJiro NakabayashiTsuneaki IwanoNobuyuki Ema
    • Hirotaka NakanoOsamu HakamuraYouji KanadaTsuneko KuraTakashi OshimaTadashi UchiumiKeiichi HibiJiro NakabayashiTsuneaki IwanoNobuyuki Ema
    • H04N5783
    • H04N5/783H04N9/8042H04N9/8227H04N19/107H04N19/132H04N19/146H04N19/152H04N19/164H04N19/172H04N19/30H04N19/40H04N19/587H04N19/60H04N19/61
    • A device which is capable of storing moving picture data received from each terminal and providing each terminal with video information to be reproducible by rapidly forwarding or reversing at any desired speed independent of usable terminals. A video storage type communication device 30 with a receiving portion 35 and a transmitting portion 38 transmits and receives video data over a communication network 10 to and from each terminal 1-n. A coded video data received from terminals 1-n is stored as it is in a first storage portion 32 and, at the same time, the data converted into specially reproducible video information is stored in the second storage portion 33. At the time of reproducing, the reproduction control portion 35 controls the reproduction selector switch 36 to obtain the video data from the first storage portion 32 or the second storage portion 33, changing the reproduction mode from ordinary to the rapid forwarding/reversing and vice versa. The specially reproducible video generating portion 34 successively restores coded video data received through the receiving portion 31, encodes again the restored data by intraframe, interframe or still-picture coding method to generate video information to be reproducible in special mode such as reproduction by rapid forwarding or reversing.
    • 一种能够存储从每个终端接收的运动图像数据的装置,并且通过以与可用终端无关的任何期望的速度快速转发或反转,为每个终端提供可重现的视频信息。 具有接收部分35和发送部分38的视频存储型通信装置30通过通信网络10向每个终端1-n发送和接收视频数据。 从终端1-n接收的编码视频数据被原样存储在第一存储部分32中,并且同时将转换成特别可重现的视频信息的数据存储在第二存储部分33中。在再现时 ,再现控制部分35控制再现选择开关36从第一存储部分32或第二存储部分33获得视频数据,将再现模式从普通转换到快速转发/反转,反之亦然。 特殊可再现的视频产生部分34连续地恢复通过接收部分31接收的编码视频数据,并通过帧内,帧间或静止图像编码方法再次对恢复的数据进行编码,以产生可在特殊模式下再现的视频信息,例如通过快速转发 或反转。
    • 4. 发明授权
    • Video storage type communication device
    • 视频存储型通信设备
    • US5742729A
    • 1998-04-21
    • US614306
    • 1996-03-12
    • Nobuyuki EmaKeiichi HibiJiro NakabayashiTsuneaki IwanoOsamu NakamuraYouji KanadaTsuneko KuraTakashi Oshima
    • Nobuyuki EmaKeiichi HibiJiro NakabayashiTsuneaki IwanoOsamu NakamuraYouji KanadaTsuneko KuraTakashi Oshima
    • H04N5/765H04N7/14H04N7/173H04N7/46H04N19/46H04N19/50H04N19/65H04N19/70H04N21/231H04N21/2387H04N21/24H04N5/91H04N5/917
    • H04N19/40H04N19/577
    • A video storage type communication device stores video data received from a terminal and reproduces required video information by rapid forwarding or reversing at any desired frame rate at the terminal independent of the terminal specification. A video storage type communication device includes a transmitting portion for transmitting video data and a receiving portion for receiving video data over a communication line. A video storage portion stores received video data. A communication control portion carries out video communication by controlling the above-mentioned portions. A refresh image detecting portion judges, from the received video data, whether the received video data is a refresh image. A storage control portion adds inter-frame or intra-frame prediction coded information to the received video data in accordance with the determination by the refresh image detecting portion and stores the received video data in the video storage portion. A terminal control portion sends at a desired interval a request for updating a display image through the communication control portion to a terminal during storing of video information.
    • 视频存储型通信装置存储从终端接收的视频数据,并且以与端子规格无关的终端的任意期望的帧速率进行快速转发或反转再现所需要的视频信息。 视频存储型通信设备包括用于发送视频数据的发送部分和用于通过通信线路接收视频数据的接收部分。 视频存储部分存储接收的视频数据。 通信控制部分通过控制上述部分来执行视频通信。 刷新图像检测部分从接收到的视频数据中判断所接收的视频数据是否是刷新图像。 存储控制部分根据刷新图像检测部分的确定将帧间或帧内预测编码信息添加到接收的视频数据,并将接收的视频数据存储在视频存储部分中。 终端控制部分在存储视频信息期间以期望的间隔发送通过通信控制部分更新显示图像的请求到终端。
    • 6. 发明授权
    • Analog-to-digital converter
    • 模数转换器
    • US08456335B2
    • 2013-06-04
    • US13297505
    • 2011-11-16
    • Takashi Oshima
    • Takashi Oshima
    • H03M1/10
    • H03M1/1052H03M1/068H03M1/468
    • In a successive approximation ADC, resolution is limited because a distortion occurs in an A/D conversion result due to a voltage dependence of a sampling capacitance. An A/D converter includes a sampling capacitor part in which capacitors equal in capacitance value to each other are connected inversely, a successive approximation A/D conversion part that conducts A/D conversion on the sampling charge, a digital correction part that corrects capacitance variation of internal DAC capacitors in the successive approximation A/D conversion part, and a digital correction part that digitally corrects a third-order or more factor of a voltage dependence of the sampling charge.
    • 在逐次逼近ADC中,由于采样电容的电压依赖性,在A / D转换结果中发生失真,所以分辨率受到限制。 A / D转换器包括一个采样电容器部分,其中电容值彼此相等的电容相反地连接,对采样电荷进行A / D转换的逐次逼近A / D转换部分,校正电容的数字校正部分 逐次逼近A / D转换部分中的内部DAC电容器的变化,以及数字校正部分,其对数字校正采样电荷的电压依赖性的三阶或更多因子。
    • 7. 发明授权
    • Analog/digital converter and semiconductor integrated circuit device
    • 模拟/数字转换器和半导体集成电路器件
    • US08102289B2
    • 2012-01-24
    • US12676357
    • 2009-02-19
    • Takashi OshimaTaizo YamawakiTomomi Takahashi
    • Takashi OshimaTaizo YamawakiTomomi Takahashi
    • H03M1/10
    • H03M1/1009H03M1/00H03M1/0695H03M1/1028H03M1/12H03M1/1215H03M1/804
    • In the digital calibration technique of the conventional time-interleaved analog/digital converter, it is impossible to perform highly-accurate calibration that supports a high-speed sampling rate of the next-generation application and achieves a high resolution. For its solution, a reference A/D conversion unit is connected in parallel to an input common to a time-interleaved A/D converter to be a calibration target, and the output of each unitary A/D conversion unit which makes up the time-interleaved A/D converter is calibrated in a digital region by using a low-speed high-resolution A/D conversion result output from the reference A/D conversion unit. Also, fCLK/N (fCLK represents an overall sampling rate of the time-interleaved A/D converter, and N is relatively prime to the number of unitary A/D conversion units connected in parallel M) is set as the operation clock frequency of the reference A/D conversion unit. In this configuration, samplings of all unitary A/D conversion units can be sequentially synchronized with the sampling of the reference A/D conversion unit, and the operation clock frequency of the reference A/D converter can be made N times slower than the overall sampling rate of the time-interleaved A/D converter.
    • 在传统的时间交错模拟/数字转换器的数字校准技术中,不可能执行支持下一代应用的高速采样率的高精度校准,并实现高分辨率。 对于其解决方案,参考A / D转换单元并联连接到时间交织的A / D转换器的公共端作为校准目标,并且构成时间的每个单位A / D转换单元的输出 通过使用从参考A / D转换单元输出的低速高分辨率A / D转换结果,在数字区域校准交错A / D转换器。 另外,fCLK / N(fCLK表示时间交织的A / D转换器的总体采样率,N是并行连接的单位A / D转换单元的数量的N相对于M)被设定为操作时钟频率 参考A / D转换单元。 在这种配置中,所有单位A / D转换单元的采样可以与参考A / D转换单元的采样顺序同步,并且参考A / D转换器的操作时钟频率可以比总体的N倍慢 时间交织A / D转换器的采样率。
    • 8. 发明申请
    • ANALOG/DIGITAL CONVERTER AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE
    • 模拟/数字转换器和半导体集成电路器件
    • US20110128171A1
    • 2011-06-02
    • US12676357
    • 2009-02-19
    • Takashi OshimaTaizo YamawakiTomomi Takahashi
    • Takashi OshimaTaizo YamawakiTomomi Takahashi
    • H03M1/10
    • H03M1/1009H03M1/00H03M1/0695H03M1/1028H03M1/12H03M1/1215H03M1/804
    • In the digital calibration technique of the conventional time-interleaved analog/digital converter, it is impossible to perform highly-accurate calibration that supports a high-speed sampling rate of the next-generation application and achieves a high resolution. For its solution, a reference A/D conversion unit is connected in parallel to an input common to a time-interleaved A/D converter to be a calibration target, and the output of each unitary A/D conversion unit which makes up the time-interleaved A/D converter is calibrated in a digital region by using a low-speed high-resolution A/D conversion result output from the reference A/D conversion unit. Also, fCLK/N (fCLK represents an overall sampling rate of the time-interleaved A/D converter, and N is relatively prime to the number of unitary A/D conversion units connected in parallel M) is set as the operation clock frequency of the reference A/D conversion unit. In this configuration, samplings of all unitary A/D conversion units can be sequentially synchronized with the sampling of the reference A/D conversion unit, and the operation clock frequency of the reference A/D converter can be made N times slower than the overall sampling rate of the time-interleaved A/D converter.
    • 在传统的时间交错模拟/数字转换器的数字校准技术中,不可能执行支持下一代应用的高速采样率的高精度校准,并实现高分辨率。 对于其解决方案,参考A / D转换单元并联连接到时间交织的A / D转换器的公共端作为校准目标,并且构成时间的每个单位A / D转换单元的输出 通过使用从参考A / D转换单元输出的低速高分辨率A / D转换结果,在数字区域校准交错A / D转换器。 另外,fCLK / N(fCLK表示时间交织的A / D转换器的总体采样率,N是并行连接的单位A / D转换单元的数量的N相对于M)被设定为操作时钟频率 参考A / D转换单元。 在这种配置中,所有单一A / D转换单元的采样可以与参考A / D转换单元的采样顺序同步,并且参考A / D转换器的操作时钟频率可以比总体的N倍慢 时间交织A / D转换器的采样率。