The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2025
Filed:
Sep. 16, 2022
Apple Inc., Cupertino, CA (US);
Jose A. Tierno, Palo Alto, CA (US);
Sanjeev S. Gokhale, Austin, TX (US);
Sunil Bhosekar, Austin, TX (US);
William D. Schwarz, Austin, TX (US);
Apple Inc., Cupertino, CA (US);
Abstract
An encoding/decoding scheme for pulse amplitude modulation (PAM) communications systems is disclosed. In one embodiment, a transmitter unit includes an encoder circuit and a transmit circuit. The encoder circuit is configured to encode an input data word having a first number of bits into a output data word having a second number of bits. The encoder performs a comparison operation to determine if at least one pair of subsets of the second plurality of bits includes bit values that are complements of each other. The encoder is further configured to modify the second plurality of bits if none of the pairs of subsets includes bit values that are complements of each other such that the modified second plurality of bits does include at least one pair of subsets that includes values complementary to one another.