| 摘要 |
FIELD: electricity. ^ SUBSTANCE: invention refers to charging cable (500, 500') that contains charging device connector for connecting charging cable (500, 500') with USB connector in charging device and device connector for connecting charging cable (500, 500') with portable device (10). Charging device connector includes USB contacts arranged in such a way that first USB contact can be connected with VBUS signal, second USB contact can be connected with D- signal, third USB contact can be connected with D+ signal, and forth USB contact can be connected with USB connector ground signal. Device connector contains contacts of device for quick connection with portable device (10), thus the first device contact is connected with ground contact, second device contact is connected with charging contact of the said portable device (10). Note that the first USB contact is connected with one of second or third USB contacts through first circuit (510, 510'), thus the first USB contact can be functionally connected with other of the said second or third USB contacts, when charging device connector is connected with external charging device that contains the second circuit (520) connecting second USB contact with third USB contact. Note that one of the said second or third USB contact is connected with second device contact by means of third circuit (530, 530'), thus the first USB contact can be functionally connected with charging contact of portable device (10) through the said first, second or third circuit (510, 510', 520, 520', 530, 530'). ^ EFFECT: charging reliability improvement. ^ 7 cl, 9 dwg |
