US 2026/0039291 A1 · ANALOG FRONT-END CIRCUIT OF DISPLAY RECEIVER COMPATIBLE WITH MOBILE INDUSTRY PROCESSOR INTERFACE

Abstract

Analog front-end (AFE) circuit of display receiver includes input pad, voltage detecting circuit, and switching circuit. The input pad may receive input signal of low power mode of Mobile Industry Processor Interface (MIPI) standard and input signal of high-speed mode of MIPI standard. Since voltage level of input signal of different modes are different, the voltage detecting circuit is configured to receive the input signal and generate control signal according to a voltage level of the input signal. The switching circuit is coupled to the voltage detecting circuit and between the input pad and the equalizer circuit. The switching circuit is configured to receive the input signal, and determine whether to pass the input signal from the input pad to the equalizer circuit according to the control signal, wherein the control signal includes two different voltage levels that are respectively corresponding to a high-speed mode and a low power mode.

Claims19

Dependent claims

An analog front-end (AFE) circuit of a display receiver complying with Mobile Industry Processor Interface standard, configured to receive an input signal, comprising:

an equalizer circuit;
an input pad, receiving the input signal;
a voltage detecting circuit, coupled to the input pad, configured to receive the input signal and generate a control signal according to a voltage level of the input signal;
and
a switching circuit, coupled to the voltage detecting circuit and between the input pad and the equalizer circuit, and configured to receive the input signal, and determine whether to pass the input signal from the input pad to the equalizer circuit according to the control signal, wherein the control signal includes two different voltage levels that are respectively corresponding to a high-speed mode and a low power mode.

2 more elements

A signal receiver complying with Mobile Industry Processor Interface standard, comprising:

a plurality of input pads;
a plurality of signal receiving circuits, each coupled to one of the input pads for receiving the input signal, each of the signal receiving circuit including:
a lower power receiving portion, comprising a voltage comparator configured to detect a voltage level of an input signal received from the corresponding input pad and generate a control signal based on the voltage level of the input signal and a predetermined voltage;
and
a high-speed receiving portion, coupled to the corresponding input pad, including an equalizer circuit and switching circuit coupled between the corresponding input pad and the equalizer circuit, wherein the switching circuit is configured to determine whether to pass the input signal received from the corresponding input pad to the equalizer circuit according to the control signal received from the voltage comparator in the lower power receiving portion,
wherein the lower power receiving portion is configured to process the input signal having a first voltage level, and the high-speed receiving portion is configured to process the input signal having a second voltage level lower than the first voltage level.

3 more elements

Dependencies are inferred from the claim text.

Analog front-end circuit of display receiver compatible with mobile industry processor interface

Life of this patent

Analog front-end circuit of display receiver compatible with mobile industry processor interface

Life of this patent

Abstract

Claims19