Abstract: An online system receives information about a first transaction including a destination account identifier and a payment amount from a source computing device. The online system sends the source computing device a deep link to a second application. The online system receives a confirmation including a transaction identifier from the second application. The payment was sent to an intermediate payment processor, which records the first transaction in a ledger in association with a source account identifier. The online system receives an instruction to reverse the first transaction. The online system sends an instruction to generate a second transaction to a source account of the source computing device including the transaction identifier and not the source account identifier to the intermediate payment processor. The online system receives a confirmation of the second transaction, where the intermediate payment processor queried the ledger using the transaction identifier to identify the source account.

Abstract: An online system receives information about a first transaction including a destination account identifier and a payment amount from a source computing device. The online system sends the source computing device a deep link to a second application. The online system receives a confirmation including a transaction identifier from the second application. The payment was sent to an intermediate payment processor, which records the first transaction in a ledger in association with a source account identifier. The online system receives an instruction to reverse the first transaction. The online system sends an instruction to generate a second transaction to a source account of the source computing device including the transaction identifier and not the source account identifier to the intermediate payment processor. The online system receives a confirmation of the second transaction, where the intermediate payment processor queried the ledger using the transaction identifier to identify the source account.

Abstract: An illustrative PLL circuit and method for generating a clock signal over a wide frequency range without gaps. In one illustrative embodiment, an extended-range PLL includes: a phase comparator that determines a phase error between a reference clock and a feedback clock; a loop filter that converts the phase error into a control signal; a voltage controlled oscillator (VCO) that provides a generated clock signal having a generated clock frequency determined by the control signal; a divide-by-1.5 block that produces a reduced-frequency clock signal in response to the generated clock signal; and a multiplexer that selects one of the generated clock signal and the reduced-frequency clock signal as a selected clock signal.

Abstract: An illustrative PLL circuit and method for generating a clock signal over a wide frequency range without gaps. In one illustrative embodiment, an extended-range PLL includes: a phase comparator that determines a phase error between a reference clock and a feedback clock; a loop filter that converts the phase error into a control signal; a voltage controlled oscillator (VCO) that provides a generated clock signal having a generated clock frequency determined by the control signal; a divide-by-1.5 block that produces a reduced-frequency clock signal in response to the generated clock signal; and a multiplexer that selects one of the generated clock signal and the reduced-frequency clock signal as a selected clock signal.

Abstract: A novel method of making chlorine dioxide is provided. The method includes the steps of combining a hypochlorite salt and trichloroisocyanuric acid reactants in solid state in an aqueous reaction medium; and mixing the reaction medium with a gaseous carrier under conditions suitable to generate chlorine dioxide. A novel apparatus for use in generating chlorine dioxide is also provided.