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US 11,885,914 B2Granted
LIDAR system and signal processing method thereof
AssigneeHyundai Mobis Co., Ltd.
InventorJae Won Choi
Life of this patent
Estimating the term…
Abstract
A light detection and ranging (LIDAR) system includes a transmitter configured to output a number of output pulses to a target object; a receiver configured to receive a plurality of input pulses corresponding to the number of output pulses; and a signal processor including a signal converter configured to convert the plurality of input pulses into discrete signals and an encoder configured to encode amplitude information of the plurality of input pulses converted into the discrete signals.
Claims13
A light detection and ranging (LIDAR) system comprising:
- a transmitter configured to output a number of output pulses to a target object;
- a receiver configured to receive a plurality of input pulses corresponding to the number of output pulses;
- and
- a signal processor including a signal converter and an encoder,
- wherein the signal converter is configured to convert the plurality of input pulses into discrete signals and comprises a plurality of comparators into which the plurality of input pulses is input, and
- the encoder is configured to encode amplitude information of the plurality of input pulses converted into the discrete signals, and comprises:
- an inversion logic gate configured to invert and transfer a current data value when a rising edge occurs at output terminals of comparators except for a first comparator of the plurality of comparators;
- a register configured to receive and store a data value of the inversion logic gate;
- and
- a logic gate configured to generate an amplitude encoding value corresponding to amplitude information of the input pulse, and comprising:
- a first XOR gate having a first input terminal connected to a first output terminal of the register and a second input terminal connected to a second output terminal of the register;
- and
- a second XOR gate having a first input terminal connected to the second output terminal of the register and a second input terminal connected to a third output terminal of the register.
10 more elements
A signal processing method of a light detection and ranging (LIDAR) system, comprising:
- outputting a number of output pulses to a target object;
- receiving a plurality of input pulses corresponding to the number of output pulses;
- converting the plurality of input pulses of a continuous signal form into discrete signal forms;
- and
- encoding amplitude information of the plurality of input pulses converted into the discrete signal forms,
- wherein encoding the amplitude information comprises an inversion step of inverting a current data value and transferring the inverted data value to a register,
- the method further comprises a derivation step of deriving amplitude encoding values of the plurality of input pulses by applying the data value stored in the register to a predetermined logic equation, and
- the predetermined logic equation includes an XOR logic gate.
5 more elements
A signal processing method of a light detection and ranging (LIDAR) system, comprising:
- outputting a number of output pulses to a target object;
- receiving a plurality of input pulses corresponding to the number of output pulses;
- converting the plurality of input pulses of a continuous signal form into discrete signal forms;
- and
- encoding amplitude information of the plurality of input pulses converted into the discrete signal forms,
- wherein converting the plurality of input pulses of the continuous signal form comprises converting the plurality of input pulses into the discrete signal forms by a plurality of comparators to which variable reference voltages having different voltage values are applied,
- the encoding the amplitude information comprises:
- a first comparison step of comparing a voltage of each of the plurality of input pulses and a first variable reference voltage;
- a second comparison step of comparing the voltage of each of the plurality of input pulses and a second variable reference voltage when a falling edge does not occur in the first comparison step;
- and
- an inversion step of inverting a current data value and transferring the inverted data value to a register when a rising edge occurs in the second comparison step, and
- the method further comprising adding or deleting the second comparison step and the inversion step according to a number of comparators comparing the voltage of each of the plurality of input pulses and the variable reference voltage.
9 more elements
Dependencies are inferred from the claim text.