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    • 7. 发明授权
    • Data communication apparatus and method for performing noiseless data
communication using a spread spectrum system
    • 用于使用扩频系统进行无噪声数据通信的数据通信装置和方法
    • US5657379A
    • 1997-08-12
    • US457508
    • 1995-06-01
    • Toyota HondaTeiji OkamotoToru Tanaka
    • Toyota HondaTeiji OkamotoToru Tanaka
    • H04N1/32H04B1/707H04M11/06H04N1/42H04M11/00
    • H04M11/062
    • A data communication system by which simultaneous communication of voice and data is possible without disturbing voice communication. During communication between a first telephone and a second telephone through a telephone line, when a data signal from a computer is fed to a data communication system, the data signal is modulated according to a spread spectrum system by a spread spectrum modem, mixed with the voice signal, and transmitted from a line interface to the telephone line. The signal including the spread spectrum modulated data signal and the voice signal is received in the second telephone. The voice mixed with spread spectrum modulated data signal is heard at the second telephone with only slight noise. Thus, talking can continue undisturbed, because energy of the data signal is spread to a wider band.
    • 一种数据通信系统,可以在不妨碍语音通信的情况下同时进行语音和数据通信。 在通过电话线在第一电话和第二电话之间进行通信期间,当来自计算机的数据信号被馈送到数据通信系统时,数据信号根据扩展频谱系统由扩频调制解调器进行调制,与 语音信号,并从线路接口传输到电话线路。 包括扩频调制数据信号和语音信号的信号在第二电话中被接收。 混合扩频调制数据信号的声音在第二台电话中听到,只有轻微的噪音。 因此,由于数据信号的能量传播到更宽的频带,通话可以继续不受干扰。
    • 10. 发明授权
    • Voice/image simultaneous communication apparatus
    • 语音/图像同时通信装置
    • US5359644A
    • 1994-10-25
    • US200521
    • 1994-02-23
    • Toru TanakaToyota HondaTeiji OkamotoSeiji Tanaka
    • Toru TanakaToyota HondaTeiji OkamotoSeiji Tanaka
    • H04M11/08H04N1/00H04M11/00
    • H04N1/00119H04M11/085H04N1/00095Y10S379/908
    • A voice/image simultaneous communication apparatus which can transmit image data while permitting talking with higher efficiency by encoding voice and synthesizing voice coded data and image data than by multiplexing frequencies. The voice/image simultaneous communication apparatus is constructed of a voice coder for coding an analog voice signal, a voice decoder for decoding the coded voice into an analog voice signal, a data synthesizer for synthesizing image coded data and voice coded data, a data separator for separating synthesized coded data into image coded data and voice coded data, and a modem capable of performing full duplex communication. The data synthesizer can change the ratio of synthesis between voice coded data and image coded data in accordance with the data transmission speed.
    • 一种语音/图像同时通信装置,其可以通过对语音进行编码,并且通过多路复用频率来编码语音和合成语音编码数据和图像数据,同时允许更高效率地传送图像数据。 语音/图像同时通信装置由用于编码模拟语音信号的语音编码器,用于将编码语音解码为模拟语音信号的语音解码器,用于合成图像编码数据和语音编码数据的数据合成器,数据分离器 用于将合成的编码数据分离为图像编码数据和语音编码数据,以及能够执行全双工通信的调制解调器。 数据合成器可以根据数据传输速度改变语音编码数据和图像编码数据之间的合成比。