What is claimed is:
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, comprising the steps of:
(a) adding a value representing the second bandwidth to a selected value, thereby obtaining a sum value;
(b) comparing the sum 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;
(c) 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 a length of said first unit signals and said second unit signals.
2. The method of claim 1, wherein the first bandwidth is greater than the second bandwidth.
3. The method of claim 1, further comprising the steps of:
(f) detecting the presence of second unit signals having priority over the first unit signals in the stream, before the insertion of the first unit signals; and
(g) increasing the threshold value when one of the second unit signals having priority over the first unit signals is detected.
4. The method of claim 1, further comprising the steps of:
(f) detecting the presence of second unit signals having priority over the first unit signals in the stream, before the insertion of the first unit signals; and
(g) subtracting the threshold value from the selected value, thereby reducing the sum value, when one of the second unit signals having priority over the first unit signals is detected.
5. The method of claim 1, wherein the first unit signals and second unit signals are asynchronous-transfer-mode cells, and the unit intervals are cell periods equivalent to an asynchronous-transfer-mode cell length.
6. The method of claim 5, wherein the first unit signals are asynchronous-transfer-mode quality management cells and the second unit cells include asynchronous-transfer-mode user cells.
7. A transmission control device for 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, comprising the steps of:
a first arithmetic unit adding a value representing the second bandwidth to a selected value, thereby obtaining a sum value;
a comparator connected to the arithmetic unit, comparing the sum 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;
a second arithmetic unit connected to the comparator, subtracting the threshold value from the sum value, thereby obtaining a difference value; and
a selector connected to the second arithmetic unit, selecting one of the sum value and the difference value as the selected value, responsive to the assignment signal;
wherein the first arithmetic unit, the comparator, the second arithmetic unit, and the selector operate at unit intervals equivalent to a length of said first unit signals and said second unit signals.
8. The transmission control device of claim 7, wherein the first bandwidth is greater than the second bandwidth.
9. The transmission control device of claim 7, further comprising:
a detection unit detecting the presence of second unit signals having priority over the first unit signals in the stream, before the insertion of the first unit signals, thereby generating a detection signal VC; and
a threshold control unit connected to the comparator and the detection unit, increasing the threshold value when one of the second unit signals having priority over the first unit signals is detected.
10. The transmission control device of claim 7, further comprising:
a detection unit connected to the first arithmetic unit, detecting the presence of second unit signals having priority over the first unit signals in the stream, before the insertion of the first unit signals, thereby generating a detection signal VC;
wherein the first arithmetic unit subtracts the threshold value from the selected value, thereby reducing the sum value, when one of-the second unit signals having priority over the first unit signals is detected.
11. The transmission control device of claim 7, wherein the first unit signals and the second unit signals are asynchronous-transfer-mode user cells, and the unit intervals are cell periods equivalent to an asynchronous-transfer-mode cell length.
12. The transmission control device of claim 11, wherein the first unit signals are asynchronous-transfer-mode quality management cells, and the second unit signals include asynchronous-transfer-mode user cells.
13. A transmission apparatus including the transmission control device of claim 7 and a cell insertion block for inserting the first unit signals in said stream, wherein the first transmission path is internal to the transmission apparatus and the second transmission path is external to the transmission apparatus.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A strap structure used as a strap for an object selected from a group consisting of swim mask, diving mask, athlete mask, safety glasses, safety goggles, and swim fin, the object having a locking receptacle on either side, comprising:
a strap having a coupling member at either end, the coupling member being adapted to releasably secure to the locking receptacle; and
adapting means having one end adapted to releasably secure to the coupling member and the other end releasably secure to the locking receptacle so that the strap structure is adapted to secure around one of the different objects with various sizes.
2. The strap structure of claim 1, wherein the strap is formed of a material selected from a group consisting of plastic, rubber, silicon rubber, thermoplastic rubber (TPR), TPE (thermoplastic elastomer rubber), synthetic material, polymeric material, leather, and metal.
3. The strap structure of claim 1, wherein the strap and the coupling members are formed integrally.
4. The strap structure of claim 1, wherein the strap and the coupling member are coupled together by hook and groove, screw fastening, Velcro fastening, tab and slot, or tying.
5. The strap structure of claim 1, wherein the strap is formed of composite material.