Signal transmitters with size-reduced on-chip memory
AssigneeApple Inc.
InventorsLong Kong, Chia-Hsiang Chen, Utku Seckin
Life of this patent
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Abstract
A signal transmitter may include a waveform synthesis circuit and a signal transmission circuit. The waveform synthesis circuit may store values of a reference waveform for a selected channel of the signal transmitter, and use the stored values to generate values of reference waveforms for one or more other channels of the signal transmitter. The waveform synthesis circuit may further include a sampling boost circuit to generate one or more additional values for the reference waveforms. The waveform transmission circuit may generate signals for the channels of the signal transmitter based at least in part on the values of the reference waveforms, and transmit the signals via one or more antennas.
Claims20
A system, comprising:
- a waveform synthesis circuit, comprising:
- a storage circuit configured to:
- store a plurality of values of a source waveform;
- and
- store one or more correction values representing differences between a waveform generated according to the plurality of values of the source waveform and a reference waveform of the generated waveform;
- a waveform generation circuit configured to generate a plurality of values of the waveform according to the plurality of values of the source waveform;
- and
- a waveform correction circuit configured to correct at least some of the plurality of values of the generated waveform using the one or more correction values to generate a corrected waveform;
- and
- a signal transmission circuit configured to transmit a signal generated at least in part on the corrected waveform.
A method, comprising:
- storing, by a storage circuit, a plurality of values of a source waveform and one or more correction values representing differences between a waveform generated according to the plurality of values of the source waveform and a reference waveform of the generated waveform;
- generating, by a waveform generation circuit, a plurality of values of the waveform according to the plurality of values of the source waveform;
- correcting, by a waveform correction circuit, at least some of the plurality of values of the generated waveform using the one or more correction values to generate a corrected waveform;
- and
- transmitting, by a signal transmission circuit, a signal generated at least in part on the corrected waveform.
A signal transmitting device, comprising:
- a storage circuit configured to store a plurality of values of a source waveform;
- a waveform generation circuit configured to generate a plurality of values of a waveform according to the plurality of values of the source waveform;
- a sampling boost circuit configured to generate one or more additional values of the source waveform based at least in part on the values of the generated waveform provided by the waveform generation circuit;
- and
- a signal transmission circuit configured to transmit a signal generated at least in part on a corrected waveform, the corrected waveform based at least on part on the generated waveform.
Dependencies are inferred from the claim text.