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    • 5. 发明授权
    • CDMA receiver and DCMA demodulator with AGC circuit
    • CDMA接收机和具有AGC电路的DCMA解调器
    • US06853837B1
    • 2005-02-08
    • US09686090
    • 2000-10-12
    • Toshiyuki Oda
    • Toshiyuki Oda
    • H03G3/20H04B7/005H04B7/26H04J13/00H04W52/04H04W88/00H04B1/06
    • H04W52/52
    • A CDMA demodulator is disclosed, which comprises an AGC loop (13 to 20) including a IF signal converter (12) for converting a spread spectrum signal to an IF signal and an AGC amplifier (13) for variable gain amplifying the IF signal with a control voltage. The AGC loop also includes a power level calculating unit (17) for calculating the level of full power in the band of a channel under reception. Desirably, the power level calculating unit (17) starts the power level calculation from an instant corresponding to the forefront of slot. Desirably, the AGC loop further includes a control unit (18), which calculates control time based on the result of calculation in the power level calculating unit and feeds out a control voltage by calculating and controlling the control timing based on control amount. The power level calculating unit may start the power level calculation from an intermediate part of slot instead of the forefront thereof.
    • 公开了一种CDMA解调器,其包括AGC环路(13至20),该AGC环路包括用于将扩展频谱信号转换成IF信号的IF信号转换器(12)和用于可变增益放大IF信号的AGC放大器(13) 控制电压。 AGC环路还包括功率电平计算单元(17),用于计算接收频道的频带中的全功率电平。 理想地,功率电平计算单元(17)从对应于时隙的最前面的时刻开始功率电平计算。 期望地,AGC环路还包括控制单元(18),其基于功率电平计算单元中的计算结果来计算控制时间,并通过基于控制量计算和控制控制定时来输出控制电压。 功率电平计算单元可以从插槽的中间部分而不是其前沿开始功率电平计算。
    • 6. 发明授权
    • Mobile telephone with handoff between microcell and macrocell based on past moving speed
    • 基于过去的移动速度,移动电话在微小区和宏小区之间切换
    • US06212381B1
    • 2001-04-03
    • US09059925
    • 1998-04-14
    • Toshiyuki Oda
    • Toshiyuki Oda
    • H04Q720
    • H04W36/04H04W36/32
    • A mobile telephone capable of calling using a first calling system such as a personal handyphone system of being hand-off disabling at a moving speed more than the predetermined moving speed of the mobile telephone and a second calling system such as a personal digital cellular system of being hand-off enabling irrespective of the predetermined moving speed. A speed detector detects the moving speed of the mobile telephone itself, and a record holder stores the moving speed for a past predetermined time, detected by the speed detector. A central processing unit controls the calling using the first and second calling systems on the basis of the moving speed for the past predetermined time, resulting in improving reliability of line connection during moving, further improving using efficiency of the mobile telephone, and carrying out a more precise detection of a moving speed of the mobile telephone.
    • 一种移动电话,能够使用诸如个人手持电话系统的第一呼叫系统以超过移动电话的预定移动速度的移动速度进行切换,以及诸如个人数字蜂窝系统的第二呼叫系统 无论预定的移动速度如何,都是切换使能。 速度检测器检测移动电话本身的移动速度,并且记录保持器存储由速度检测器检测的过去预定时间的移动速度。 中央处理单元基于过去的预定时间的移动速度来控制使用第一和第二呼叫系统的呼叫,从而提高移动期间线路连接的可靠性,进一步提高移动电话的使用效率,并且执行 更精确地检测移动电话的移动速度。
    • 7. 发明授权
    • Interactive recording/reproducing medium and reproducing system
    • 交互式记录/再现媒体和再现系统
    • US5909551A
    • 1999-06-01
    • US694661
    • 1996-08-09
    • Mika TaharaTakashi TakeuchiToshiyuki Oda
    • Mika TaharaTakashi TakeuchiToshiyuki Oda
    • G06F12/00G06F17/30G09B5/06G11B19/02G11B27/10G11B27/32G11B27/34H04N5/91H04N5/92H04N5/937G03G7/00
    • G09B5/065G11B19/02G11B27/105G11B27/329G11B27/34H04N5/9206G11B2220/2545
    • An interactive recording/reproducing medium including: image data; image reproduction control data which defines an operation instruction received from operation input apparatus and a reproduction procedure for the image data in correlation with each other, the operation input apparatus performing a reproducing operation for the image data in an interactive manner; image related data related to the contents of the image data; and relation defining information which defines the relation between the image related data and the image data. More particularly, an interactive recording/reproducing system which is interactively responsive to operations made by a user, which defines information such as text data (e.g., ASCII text) in association with an image and reproduces the text data simultaneously with reproduction of the image. An optical disk medium comprises a Video-CD recording area for recording image data (e.g. dynamic images, static images, voice) which conform to a basic Video-CD standard, a PC data recording area for recording text data associated with the image data, and a reproduction application recording area for recording a program to effect reproduction using a PC (personal computer). A Video-CD reproducing system and a PC can be alternatively used to perform reproduction using a content of the optical disk medium.
    • 一种交互式记录/再现介质,包括:图像数据; 图像再现控制数据,其定义从操作输入装置接收的操作指令和相关联的图像数据的再现过程,操作输入装置以交互方式执行图像数据的再现操作; 与图像数据的内容相关的图像相关数据; 以及定义图像相关数据与图像数据之间的关系的关系定义信息。 更具体地说,一种交互式记录/再现系统,其对由用户进行的操作进行交互式响应,其定义与图像相关联的诸如文本数据(例如,ASCII文本)的信息,并且在再现图像的同时再现文本数据。 光盘介质包括用于记录符合基本视频CD标准的图像数据(例如,动态图像,静态图像,语音)的视频CD记录区域,用于记录与图像数据相关联的文本数据的PC数据记录区域, 以及用于记录使用PC(个人计算机)进行再现的程序的再现应用程序记录区域。 视频CD再现系统和PC可以替代地使用光盘介质的内容进行再现。