Patent ID: 6967925
Filing Date: 2005-11-22
Classification: H04L

Abstract:
1. A method of controlling the insertion of first unit signals into a stream of second unit signals transmitted from a first transmission path having a first bandwidth to a second transmission path having a second bandwidth, by assigning points at which the first unit signals may be inserted, the first unit signals and the second unit signals having a predetermined length, the method comprising the steps of: (a) adding a value representing the second bandwidth to a selected value, thereby obtaining a sum value; (b) comparing the stun value with a threshold value representing the first bandwidth, thereby generating an assignment signal designating the points at which the first unit signals may be inserted; (e) subtracting the threshold value from the sum value, thereby obtaining a difference value; (d) selecting one of the sum value and the difference value as the selected value, responsive to the assignment signal; and (e) repeating said steps (a) to (d) at unit intervals equivalent to the predetermined length.