Abstract:
Embodiments of the present invention provide flip-chip bond pad arrangements that lead to a smaller increase in die size than conventional approaches. This is accomplished by using the core side of a periphery I/O pad ring for placing some of the bond pads in order to meet the bond pad pitch requirements of flip chip technology. For example, alternating bond pads are moved inward to the core side of the I/O pads or drivers, to meet the bond pad pitch requirement between the bond pads that are moved to the core side as well the bond pads that remain outside of the core. Because the bond pads are moved inward instead of outward, the increase in the die size from the edge of the I/O pad ring is reduced. In an alternative embodiment, the bond pads are each bonded on top of an active circuitry of a corresponding I/O pad. In another alternative embodiment, the bond pads are disposed between I/O pads which are spaced from each other by a spacing in the direction of the periphery of the core to accommodate the bond pads.
Abstract:
The technique of redundantly retransmitting digitized voice data on multiple sequential frequencies increases the channel bit rate above the minimum required for normal communication in a frequency-hopping communication system for digitized voice signals. Digitized voice data is redundantly retransmitted on multiple sequential frequencies and the channel bit rate is increased above the minimum required for normal communication. Repeated transmissions of the same block of digitized voice data occurs n times at n times the bit rate of the original digitized voice data. A frequency-hopping transmitter transmits on different channels, or carrier frequencies, which are modulated by the digitized voice data signals from a transmitter data buffer. A receiver data buffer holds n blocks of digitized voice data. A signal quality estimator estimates which of the n blocks of digitized voice data has a desirable signal quality and selects the block of digitized voice data having the desirable signal quality at an output terminal of the system.
Abstract:
A system and method for obtaining and maintaining synchronization with an incoming signal prior to and during the transmission of data. Specifically, embodiments of the present invention contemplate that synchronization is obtained by searching for an initial portion of a pattern in an input signal. Once the pattern is detected, the pattern (and/or some mathematical derivation thereof) must subsequently be detected a pre-determined number of times. Once synchronization has been obtained, a pattern is continually looked for in the input signal in order to maintain synchronization. The present invention maintains this synchronization even though data may be embedded within this input signal.