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American Telephone and Telegraph Co., AT&T Bell Labs Patents
Assignee:
American Telephone and Telegraph Co., AT&T Bell Labs
Address:
Murray Hill, NJ
No. of patents:
7
Patents:




Patent Number Title Of Patent Date Issued
4803540 Semiconductor integrated circuit packages February 7, 1989
A lead frame for mounting a semiconductor chip in an integrated circuit package incorporates a deformation absorbing member as an integral part of the paddle support arm so that the initial, desired physical and electrical characteristics are unaltered after a forming operation such as
4787698 Methods of and apparatus for reconfiguring optical fiber connector components and products produ November 29, 1988
A biconic connector (40) includes two plugs (44-44) each of which terminates a single fiber optical cable (55) and each of which includes a truncated conically shaped end portion (50). The connector also includes an alignment sleeve having back-to-back conically shaped cavities each of
4785345 Integrated transformer structure with primary winding in substrate November 15, 1988
An integrated transformer structure is disclosed. In one embodiment, the primary transformer winding is formed using dielectrically isolated (DI) technology so as to isolate high voltages applied to the transformer primary from other components in the substrate. Alternatively, conven
4765706 Optical communications system including a directional coupler August 23, 1988
Low-loss coupling between a local feed connection or node, and a multi-mode optical fiber bus is provided by reflective insertion of a relatively small number of modes into the bus fiber. Essentially all input power available at the node is thus inserted into the bus, while but a small
4706240 Switching system having multiple parallel switching networks November 10, 1987
A switching system having a control network for establishment of a path and a data switching network responsive to the path determined by the control network for switching data between a plurality of input ports to a plurality of output ports. The control network is a self-routing networ
4688160 Single ended forward converter with resonant commutation of magnetizing current August 18, 1987
A single ended forward converter periodically resets the transformer core to prevent saturation and returns magnetizing energy to the energy source, requiring only the addition of one resonating capacitor to the converter circuit.The transformer is reset and the energy recovered into the
4672518 Current mode control arrangement with load dependent ramp signal added to sensed current wavefor June 9, 1987
A switching converter in which current mode voltage regulation is implemented includes circuitry to add ramp compensation to the sensed current signal at light load and reduce or disable this ramp signal compensation at heavy load. This load dependent ramp signal improves the stabili

 
 
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