First dialed digit detector and comparator
Реферат: FIRST DIALED DIGIT DETECTOR AND COMPARATOR ABSTRACT OF THE DISCLOSURE A device for use in a telephone detects the first dialed digit and compares it with a reference value stored in a memory to determine the type of a telephone call.
Telephone apparatus with capability of adding, deleting and comparing telephone numbers
Номер патента: US6829337B2. Автор: Shuichi Misumi. Владелец: Matsushita Electric Industrial Co Ltd. Дата публикации: 2004-12-07.