Oracle International Corporation

Oracle America, Inc.

Verily Life Sciences LLC

Justin Schauer

Robert David Hopkins, Ii

Robert J Drost

Robert Francis Wiser

Daniel James Yeager

Robert David Hopkins

Philip Amberg

Kannan Aryaperumal Sankaragomathi

Ronald Ho

Alex Chow

Jon Lexau

Robert David Ii Hopkins

Robert David Hopkins Ii

Examples of increasing yield and operating temperature range of transmitters are disclosed. In one example, a transmitter has an a thin-film bulk acoustic (FBAR) resonator. The transmitter may be a Bluetooth Low Energy (BLE) transmitter. In this example, the FBAR-based BLE transmitter does not require or have a phase locked loop, and does not require or have a crystal reference. The FBAR-based BLE transmitter may have an oscillator with a split capacitor array. The oscillator may be a Pierce oscillator with a split capacitor array. The FBAR-based transmitter and calibration methods described herein provide a greater yield and wider operating range than prior transmitters.

Increasing yield and operating temperature range of transmitters

The present disclosure relates to a method that includes calculating a first frequency drift associated with an oscillator at a current temperature; based on the calculation, generating a first signal indicative of temperature compensation data; generating a second signal indicative of packet data and a modulation scheme; using the first signal, the second signal, and a first predetermined signal to generate a first tuning signal; and using the first tuning signal to tune a first capacitor array coupled to the oscillator and a second tuning signal to tune a second capacitor array coupled to the oscillator such that (i) the oscillator generates a modulated RF signal indicative of the packet data and (ii) the modulated RF signal has a second frequency drift that is less than a threshold.

Temperature-stable FBAR transmitter

Techniques are described for performing filter and project operations. In an embodiment, a set of predicates that specify criteria for filtering results to a query is received. Based on a particular predicate of the set of predicates, a predicate result for at least one portion of a particular column is generated. The predicate result identifies rows within the first column that satisfy the particular predicate. Rows are selected and returned as results to the query based at least in part on the predicate result. In an embodiment, the predicate result is a bitvector where each bit of the bitvector corresponds to a particular row within the particular column and identify whether the particular row satisfies the particular predicate.

Hardware implementation of the filter/project operations

Techniques are described for performing grouping and aggregation operations. In an embodiment, a request is received to aggregate data grouped by a first column. In response to receiving the request, values are loaded from the first column into an input cache. The values include values, from the first column, from a set of rows. A filter unit is programmed with logic to perform a comparison between a particular value, from the first column of a first row, and values in the first column of a plurality of rows, of the set of rows. Based on the comparison, a predicate result is generated that identifies rows, within the plurality of rows, that have a valued in the first column that matches the particular value. An aggregate value for a second column is generated by aggregating values, from the second column, of each of the rows identified by the predicate result.

Hardware implementation of the aggregation/group by operation: filter method

Techniques are described for performing grouping and aggregation operations. In one embodiment, a request is received to aggregate data grouped by a first column. In response to receiving the request, a group value in a row of a first column is mapped to an address. A pointer is stored for a first group at a first location identified by the address. The pointer identifies a second location of a set of aggregation data for the first group. An aggregate value included in the set of aggregation data is updated based on a value in the row of a second column.

Hardware implementation of the aggregation/group by operation: hash-table method

Offset voltages developed on floating nodes on inputs to high-performance amplifiers that are DC isolated from the data signals input to amplifiers are cancelled by connecting a highly resistive element between the input node and a predetermined potential, particularly useful in proximity communication systems in which two chips are connected through capacitive or inductive coupling circuits formed jointly in the two chips. The resistive element may be an off MOS transistor connected between the node and a desired bias voltage or a MOS transistor with its gate and drain connected to the potential. Multiple bias voltages may be distributed to all receivers and locally selected by a multiplexer for application to one or two input nodes of the receiver. The receiver output can also serve as a predetermined potential when the resistive element has a long time constant compared to the data rate or the resistive element is non-linear.

Offset cancellation for DC isolated nodes

A method of testing a proximity communication system for voltage margin by impressing a voltage upon the data link between the transmitter on one chip and the receiver on the other chip coupled to the transmitter through a capacitively coupling circuit formed by juxtaposed capacitor pads on the respective two chips. The impressed voltage is varied and the output of the receiver is monitored to determine an operational voltage margin. The floating inputs on the receiver may be continuously biased by connecting them to variable biasing supply voltages through high impedances. When the floating inputs are periodically refreshed to a refresh voltage during a quiescent data period, the refresh voltage is varied between successive refresh cycles. The variable test voltage may be applied to transmitter output when it is in a high-impedance state, and the output of the receiver is measured.

Voltage margin testing for proximity communication

A semiconductor die includes proximity connectors proximate to a surface of the semiconductor die. This semiconductor die is configured to communicate signals with another semiconductor die via proximity communication through one or more of the proximity connectors. In particular, the proximity connectors include a first group of proximity connectors that is configured to facilitate determining a first separation between the semiconductor die and the other semiconductor die by comparing coupling capacitances between the semiconductor die and the other semiconductor die. Note that the first group of proximity connectors includes a first proximity connector and a second proximity connector, and the second proximity connector at least partially encloses an in-plane outer edge of the first proximity connector.

Determining chip separation by comparing coupling capacitances

One embodiment of the present invention provides a system that biases a floating node within an integrated circuit. During operation, the system first identifies the floating node within the integrated circuit to be biased. The system then determines a desired bias voltage. Next, the system couples a low-power bias source to the floating node to supply the desired bias voltage, wherein the floating node is biased without stopping data transmission through the floating node during biasing.

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San Francisco, CA, United States of America

Justin Schauer