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    • 5. 发明公开
    • Moving image signal encoding- and decoding apparatus
    • 运动图像信号编码和解码装置
    • EP0397402A2
    • 1990-11-14
    • EP90304841.1
    • 1990-05-03
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • Nagata, AtsushiTakahashi, KenichiTakeguchi, Nobuyasu
    • H04N7/24
    • H04N19/587H04N19/30H04N19/61
    • A moving image signal encoding apparatus comprises a frame decimating circuit for extracting encoded frames from an input moving image signal at specified intervals, a frame interpolating circuit for obtaining an interpolated frame between the encoded frames, and a circuit for obtaining an error formed by frame interpolation. A moving image signal decoding apparatus comprises a receiving circuit for extracting a frame code from an inputted signal, a frame decoding circuit for decoding the frame code to obtain a reproduced frame, and a frame interpolating circuit for obtaining an interpolated frame between the reproduced frames. By transmitting an error of the interpolated frame from the encoding apparatus to the decoding apparatus and correcting the error of the interpolated frame with the decoding apparatus, the error of the interpolated frame is eliminated. Alternatively, depending on the value of the error of the interpolated frame obtained with the encoding apparatus, circuit determines the operation mode as to whether the frame interpolating circuit of the decoder carries out frame interpolation or preceding value holding and sends a flag to show the operation mode to the decoder, so that improvement is given when the error of the interpolated frame is large.
    • 运动图像信号编码设备包括:帧抽取电路,用于以规定的间隔从输入运动图像信号中提取编码帧;帧内插电路,用于获得编码帧之间的内插帧;以及电路,用于获得由帧内插形成的误差 。 运动图像信号解码装置包括用于从输入信号中提取帧代码的接收电路,用于对帧代码进行解码以获得再现帧的帧解码电路,以及用于获得再现帧之间的插值帧的帧插值电路。 通过从编码装置向解码装置发送内插帧的误差并用解码装置校正内插帧的误差,内插帧的误差被消除。 或者,根据由编码装置得到的内插帧的误差值,电路确定解码器的帧内插电路是执行帧内插还是先前值保持的操作模式,并发送标志以显示操作 模式提供给解码器,从而当内插帧的误差很大时给出改进。
    • 8. 发明公开
    • External adapter for portable cellular phone
    • 外部适配器eelen tragbaren Zellularfunktelefon
    • EP0905915A2
    • 1999-03-31
    • EP98118410.4
    • 1998-09-29
    • Matsushita Electric Industrial Co., Ltd.
    • Nakamura, HiroyukiSakakura, MakotoMaegawa, TakaakiKosugi, HiroakiTakahashi, Kenichi
    • H04B1/38
    • H04B1/3877
    • The present invention provides a portable celullar phone and an external adapter for a portable celullar phone, with which it is possible to suppress an increase in an output power of a portable celullar phone transmit amplifier due to a loss at a transmit switch associated with use of an external transmitting antenna, and to reduce a deterioration of an NF of a receiving system due to a loss at a receive switch associated with use of an external receiving antenna. A transmit switch 109, which is disposed before a portable celullar phone transmit amplifier 103 which is disposed in a portable celullar phone 101, is connected to an input of a transmit amplifier part 115 of a portable celullar phone external adapter 112, while a receive switch 110 which is disposed after a portable celullar phone receive amplifier 108 is connected to an output of a receive amplifier part 118 of the portable celullar phone external adapter 112.
    • 本发明提供一种便携式Celullar电话和用于便携式Celullar电话的外部适配器,通过该外部适配器可以抑制便携式Celullar电话发射放大器的输出功率的增加,这是由于与使用 外部发送天线,并且由于与使用外部接收天线相关联的接收开关处的损失而减少接收系统的NF的劣化。 布置在便携式Celullar电话机101之前的便携式Celullar电话发送放大器103之前的发送开关109连接到便携式Celullar电话外部适配器112的发送放大器部分115的输入端,而接收开关 放置在便携式Celullar电话接收放大器108之后的110被连接到便携式Celullar电话外部适配器112的接收放大器部分118的输出端。
    • 9. 发明公开
    • Signal encoding and decoding method and device
    • Verfahren und Vorrichtung zur Codierung und Decodierung eines Signals。
    • EP0300775A2
    • 1989-01-25
    • EP88306679.7
    • 1988-07-20
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • Takeguchi, NobuyasuAkiyama, ToshihideTakahashi, Kenichi
    • H04N7/32
    • H04N19/10
    • A method of encoding and decoding image and/or audio signals includes an encoding step comprising previously preparing a quantization table which has pairs of a sam­pling interval and a quantized difference value, cal­culating a difference value between a given initial value and a sampling point succeeding to the initial value, comparing the calculated difference value with the quantization table, and searching the most matching quan­tization level. The search is started from the sampling point immediately succeeding to the initial value and then stopped upon finding of the matching quantization level. The index of that matching quantization level is transmitted. The decoding step comprises preparing the same quantization table as used in the encoding step, determining the sampling interval and the quantized difference value based on the index received, and adding the quantized difference value to the initial value to obtain a decoded value. In case there are present two or more sampling intervals, the corresponding samples are interporated. As a result, the sampling interval is prolonged in the flat parts of signal and shortened in the steeply changing parts, thereby providing compression fit for human visual and auditory characteristics.
    • 编码和解码图像和/或音频信号的方法包括编码步骤,包括预先准备具有采样间隔和量化差值对的量化表,计算给定初始值和随后的采样点之间的差值 初始值,将计算的差值与量化表进行比较,并搜索最匹配的量化级。 从紧接在初始值之后的采样点开始搜索,然后在找到匹配的量化级别后停止。 发送匹配量化级的索引。 解码步骤包括准备与编码步骤中使用的量化表相同的量化表,根据所接收的索引确定采样间隔和量化差值,并将量化差值加到初始值以获得解码值。 在存在两个或更多个采样间隔的情况下,对应的采样间隔。 结果,信号的平坦部分的采样间隔延长,并且在急剧变化的部分中被缩短,从而为人类视觉和听觉特征提供压缩配合。