俊幸 松田

TL;DR: In this article, the authors proposed a code conversion system which allows a telephone conversation without reconverting a speech into a reproduced speech temporarily as to a telephone conversations between speech encoding systems that are different in quantized value or quantizing method.

TL;DR: In this paper, a signal analysis device for separating and evaluating each signal even if signals applied in different phase modulation methods are adopted in one slot is proposed. But the problem of signal analysis is not addressed.

TL;DR: In this article, the authors proposed a peak value detection method based on a convolution operation of a series of pulses and the following interpolating function: H=[sinx)/x]×W (x) where, x=π.t.

TL;DR: In this paper, the authors proposed an automatic telephone transfer service system which can automatically transfer a terminating call to an IP telephone, set to other IP terminal set or to other PSTN telephone sets via exchanges.

TL;DR: In this paper, the authors proposed a call connection control method in which IP network call connection using a PSTN telephone number is made possible, where the IP telephone number of the terminating side telephone set can not be acquired from the telephone number conversion server.