Tracking correction for a rotary head by detection of the minimum signal
level
    41.
    发明授权
    Tracking correction for a rotary head by detection of the minimum signal level 失效
    通过检测最小信号电平对旋转磁头进行跟踪校正

    公开(公告)号:US4777543A

    公开(公告)日:1988-10-11

    申请号:US898539

    申请日:1986-08-21

    CPC分类号: G11B15/4675

    摘要: In an automatic tracking system for a magnetic recording and reproducing apparatus wherein tracking is controlled so as to increase an amplitude of a reproduced signal which is delivered from a rotary head for reproducing a track recorded by a helical scan system, the amplitudes of the reproduced signal are detected at a plurality of points of time within one rotational cycle of the rotary head, and the tracking is controlled so as to increase a minimum value among the detected values at the plurality of points of time.

    摘要翻译: 在用于磁记录和再现装置的自动跟踪系统中,其中跟踪被控制以增加从用于再现由螺旋扫描系统记录的轨迹的旋转磁头传送的再现信号的幅度,再现信号的幅度 在旋转头的一个旋转周期内的多个时间点被检测,并且跟踪被控制以便在多个时间点上增加检测值中的最小值。

    Switching regulator system for a motor driving circuit
    42.
    发明授权
    Switching regulator system for a motor driving circuit 失效
    用于电机驱动电路的开关稳压器系统

    公开(公告)号:US4682096A

    公开(公告)日:1987-07-21

    申请号:US786500

    申请日:1985-10-11

    CPC分类号: H02P6/08

    摘要: A motor driving circuit includes an equivalent power PNP transistor constituted by a Darlington connection of a small-current PNP transistor and a large-current NPN transistor, and a switching regulator of a step-down and variable type is provided between the collector of the NPN transistor and the emitter of the PNP transistor. Electric power loss in the motor driving circuit can be reduced, and the electric power required to operate the motor driving circuit can be saved.

    摘要翻译: 电动机驱动电路包括由小电流PNP晶体管和大电流NPN晶体管的达林顿连接构成的等效功率PNP晶体管,并且在NPN的集电极之间设置降压型和可变型的开关调节器 晶体管和PNP晶体管的发射极。 可以减少电动机驱动电路中的电力损失,并且可以节省操作电动机驱动电路所需的电力。

    VIDEO DISPLAY APPARATUS AND TERMINAL DEVICE
    45.
    发明申请
    VIDEO DISPLAY APPARATUS AND TERMINAL DEVICE 审中-公开
    视频显示设备和终端设备

    公开(公告)号:US20150138444A1

    公开(公告)日:2015-05-21

    申请号:US14406546

    申请日:2012-09-14

    IPC分类号: H04N5/44

    摘要: The present invention provides a video display apparatus and a terminal device that are easy to use. The present invention is provided with a display unit for displaying video content, a receiving unit for receiving a command transmitted by the terminal device, and a control unit for executing a process corresponding to the command received from the receiving unit. The control unit executes a process corresponding to a first command when the first command is received from a specific terminal device, but not a process corresponding to the first command when the first command is received from another terminal device; and executes a process corresponding to a second command when the second command is received from the specific terminal device or the other terminal device.

    摘要翻译: 本发明提供一种易于使用的视频显示装置和终端装置。 本发明提供了一种用于显示视频内容的显示单元,一个用于接收终端设备发送的命令的接收单元和一个用于执行与从接收单元接收的命令相对应的处理的控制单元。 当从另一个终端装置接收到第一命令时,控制单元执行从特定终端装置接收到第一命令时对应于第一命令的处理,而不执行与第一命令对应的处理; 并且当从特定终端装置或其他终端装置接收到第二命令时,执行与第二命令对应的处理。

    Information Recording Apparatus and Information Recording Method
    46.
    发明申请
    Information Recording Apparatus and Information Recording Method 审中-公开
    信息记录装置和信息记录方法

    公开(公告)号:US20090003160A1

    公开(公告)日:2009-01-01

    申请号:US12204039

    申请日:2008-09-04

    IPC分类号: G11B5/09

    摘要: An information recording apparatus such as an optical disc that can avoid an unrecordable condition between a power-on operation and an available state for recording thereby to solve a problem that an image taking chance is missed in a recording step, wherein its constitution is such that: receiving a command to turn on the apparatus after switching, a system controller drives a power-supply circuit to activate a drive controller and a memory controller; if the optical disc is not replaced while in power-off operation by a sub-battery, the system controller issues a request for high-speed activation, based on information stored in an EEPROM, to the drive controller, and drives plural drive control units one after another thereby to establish an activation period confirmedly, allowing the memory controller to accept a request for a recording start from the system controller without waiting for a report of activation completion to be issued by the drive controller.

    摘要翻译: 诸如光盘的信息记录装置,其可以避免在通电操作和用于记录的可用状态之间的不可记录状况,从而解决在记录步骤中错过了拍摄机会的问题,其中其结构使得 接收切换后接通设备的命令,系统控制器驱动电源电路以激活驱动控制器和存储器控制器; 如果在通过子电池的断电操作期间光盘不被更换,则系统控制器基于存储在EEPROM中的信息向驱动控制器发出高速激活请求,并驱动多个驱动控制单元 一个接一个地由此确定确定一个激活期,允许存储器控制器接受来自系统控制器的记录开始请求,而不用等待由驱动控制器发出的激活完成的报告。

    Information recording apparatus
    47.
    发明申请
    Information recording apparatus 有权
    信息记录装置

    公开(公告)号:US20070297308A1

    公开(公告)日:2007-12-27

    申请号:US11893910

    申请日:2007-08-17

    IPC分类号: G11B7/00

    摘要: An information recording apparatus such as an optical disc that can avoid an unrecordable condition between a power-on operation and an available state for recording thereby to solve a problem that an image taking chance is missed in a recording step, wherein its constitution is such that: receiving a command to turn on the apparatus after switching, a system controller drives a power-supply circuit to activate a drive controller and a memory controller; if the optical disc is not replaced while in power-off operation by a sub-battery, the system controller issues a request for high-speed activation, based on information stored in an EEPROM, to the drive controller, and drives plural drive control units one after another thereby to establish an activation period confirmedly, allowing the memory controller to accept a request for a recording start from the system controller without waiting for a report of activation completion to be issued by the drive controller.

    摘要翻译: 诸如光盘的信息记录装置,其可以避免在通电操作和用于记录的可用状态之间的不可记录状况,从而解决在记录步骤中错过了拍摄机会的问题,其中其结构使得 接收切换后接通设备的命令,系统控制器驱动电源电路以激活驱动控制器和存储器控制器; 如果在通过子电池的断电操作期间光盘不被更换,则系统控制器基于存储在EEPROM中的信息向驱动控制器发出高速激活请求,并驱动多个驱动控制单元 一个接一个地由此确定确定一个激活期,允许存储器控制器接受来自系统控制器的记录开始请求,而不用等待由驱动控制器发出的激活完成的报告。

    Digital/analog compatible video tape recorder
    48.
    发明授权
    Digital/analog compatible video tape recorder 失效
    数字/模拟兼容录像机

    公开(公告)号:US06798979B2

    公开(公告)日:2004-09-28

    申请号:US09878390

    申请日:2001-06-12

    IPC分类号: H04N585

    摘要: A helical scanning video tape recorder for recording and reproducing video signals and audio signals to/from a magnetic tape. The video tape recorder includes an analog signal reproducing mode in which an FM luminance signal and a down-converted chrominance signal are reproduced from the magnetic tape by a pair of magnetic heads having a first azimuth angle and an FM audio signal is reproduced from a deep layer of the magnetic tape by a pair of magnetic heads having a second azimuth angle, and a digital signal reproducing mode in which a digital signal is reproduced from the magnetic tape by the pair of magnetic heads having the second azimuth angle. The digital signal is converted into a signal having a frequency in a frequency band higher than a frequency of the FM audio is signal. The video type recorder also includes a recording mode detector and a controller.

    摘要翻译: 一种用于向/从磁带记录和再现视频信号和音频信号的螺旋扫描录像机。 录像机包括模拟信号再现模式,其中通过具有第一方位角和FM音频信号的一对磁头从磁带再现FM亮度信号和下变频色度信号,该深度从深度再现 具有第二方位角的一对磁头的磁带层以及数字信号再现模式,其中通过具有第二方位角的一对磁头从磁带再现数字信号。 数字信号被转换成具有比FM音频信号的频率高的频带的频率的信号。 视频类型记录器还包括记录模式检测器和控制器。

    Video data compression system, video recording/playback system, and video data compression encoding method
    49.
    发明授权
    Video data compression system, video recording/playback system, and video data compression encoding method 失效
    视频数据压缩系统,视频录像/播放系统以及视频数据压缩编码方法

    公开(公告)号:US06314137B1

    公开(公告)日:2001-11-06

    申请号:US09050568

    申请日:1998-03-30

    IPC分类号: H04N712

    摘要: A video data compression/playback system efficiently compresses a plurality of video data pieces through inter-frame predictive-encoding. Mixed video data VSMIr composed of time-divided video data received by video input terminals are divided video data pieces each of which corresponding to video input terminals and the video data pieces are written into memories respectively by a memory control circuit for recording mode. The mixed video data written into the memories is read, a specified number of frames at a time. An MPEG encoding circuit performs inter-frame predictive-encoding for each specified number of frames.

    摘要翻译: 视频数据压缩/重放系统通过帧间预测编码有效地压缩多个视频数据。 由视频输入端子接收的由时分视频数据组成的混合视频数据VSMIr分别是与视频输入终端相对应的分割视频数据,并且视频数据被分别由用于记录模式的存储器控​​制电路写入存储器。 写入存储器的混合视频数据被读取,一次指定数量的帧。 MPEG编码电路针对每个指定数量的帧执行帧间预测编码。

    Tracking method and apparatus used in helical scan magnetic
recording/reproducing system
    50.
    发明授权
    Tracking method and apparatus used in helical scan magnetic recording/reproducing system 失效
    用于螺旋扫描磁记录/再现系统的跟踪方法和装置

    公开(公告)号:US5760988A

    公开(公告)日:1998-06-02

    申请号:US322423

    申请日:1994-10-13

    CPC分类号: G11B15/4675 H04N5/7826

    摘要: A tracking method and apparatus used in a helical scan magnetic recording/reproducing system is based on an automatic tracking control using an envelope detection signal of a reproduced signal. The tracking apparatus is provided with a circuit for controlling the rotation speed of a capstan motor which transports a magnetic tape, a level comparing circuit for making the comparison for the level of an envelope signal of the reproduced signal, a circuit for applying a predetermined deviation to the rotation speed in accordance with the result of comparison, a circuit for detecting a steady speed deviation between a recording apparatus and a reproducing apparatus from a speed deviation signal generated in the process of the automatic tracking control, and a circuit for correcting the speed deviation.

    摘要翻译: 在螺旋扫描磁记录/再现系统中使用的跟踪方法和装置基于使用再现信号的包络检测信号的自动跟踪控制。 跟踪装置设置有用于控制传送磁带的主导轴马达的转速的电路,用于对再现信号的包络信号的电平进行比较的电平比较电路,用于施加预定偏差的电路 与根据比较结果的转速相对应地,根据在自动跟踪控制过程中产生的速度偏差信号检测记录装置和再现装置之间的稳定速度偏差的电路,以及用于校正速度的电路 偏差。