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Patent

Multi-level amplitude signaling receiver

TLDR
In this article, a receiver circuit for multi-level amplitude signaling with at least three amplitude levels for each symbol period is described. But the receiver circuit includes a peak detector, a reference voltage generator, and a comparator circuit, and the peak detector is arranged to detect a peak voltage of the multilevel amplitude signal.
Abstract
One embodiment relates to a receiver circuit for multi-level amplitude signaling which includes at least three amplitude levels for each symbol period. The receiver circuit includes a peak detector, a reference voltage generator, and a comparator circuit. The peak detector is arranged to detect a peak voltage of the multi-level amplitude signal, and the reference voltage generator uses the peak voltage to generate multiple reference voltages. The comparator circuit uses the multiple reference voltages to detect an amplitude level of the multi-level amplitude signal. Other embodiments and features are also disclosed.

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Citations
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Methods and systems for selection of unions of vector signaling codes for power and pin efficient chip-to-chip communication

TL;DR: In this paper, the authors describe a vector signaling code (VSC) for high speed and high pin efficiency with good resilience to common mode and other noise on the communication bus.
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Methods and Systems for High Bandwidth Chip-to-Chip Communications Interface

TL;DR: In this article, a vector signaling code is used for transmitting data over physical channels to provide a high bandwidth, low latency interface between integrated circuit chips with low power utilization, where each wire carries a low swing signal that may take on more than two signal values.
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Methods and systems for skew tolerance in and advanced detectors for vector signaling codes for chip-to-chip communication

TL;DR: In this article, vector signaling codes communicate information as groups of symbols which, when transmitted over multiple communications channels, may be received as mixed sets of symbols from different transmission groups due to propagation time variations between channels.
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Orthogonal differential vector signaling codes with embedded clock

TL;DR: In this paper, Orthogonal differential vector signaling codes are described which support encoded sub-channels allowing transport of distinct but temporally aligned data and clocking signals over the same transport medium.
References
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Patent

Offset cancellation in a multi-level signaling system

TL;DR: In this paper, a threshold generating circuit combines a first control value and a second control value to generate the first threshold value and provide the first value to the sampling circuit, which is then used by the threshold generator.
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Apparatus and method thereof for clock and data recovery of n-pam encoded signals using a conventional 2-pam cdr circuit

TL;DR: An interface circuit for enabling clock and data recovery (CDR) of N-level PAM modulated data streams using a 2-PAM CDR circuit is presented in this article.
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Display, timing controller and column driver integrated circuit using clock embedded multi-level signaling

Yong Jae Lee
TL;DR: In this article, a display, a timing controller and a column driver integrated circuit using clock embedded multi-level signaling is described. But the present paper only relates to a display.
Patent

Circuit for multiplexing a plurality of signals on one transmission line between chips

TL;DR: In this paper, the authors proposed a method for the simultaneous transmission of three digital signals from one integrated circuit to another by using series resistors of predetermined values and then transmitted by one transmission line to the second integrated circuit chip.