# US 2024/0201341 A1 · Amplitude shift keying lidar > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0201341 A1 - Document ID: US20240201341A1 - Status: Published application - Kind: A1 - Application number: 18/556,368 - Filed: 2022-03-28 - Published: 2024-06-20 - Earliest claimed: 2021-04-23 - Assignees: OSRAM GmbH - Applicants: OSRAM GmbH - Inventors: Bernhard SIESSEGGER; Gerhard MAIERBACHER - Web page: https://patentgrep.com/patent/US20240201341A1 ## CPC - G01S 7/484: Transmitters - G01S 7/4815: {using multiple transmitters} - G01S 17/10: using transmission of interrupted, pulse-modulated waves (determination of distance by phase measurements G01S17/32) - G01S 17/89: for mapping or imaging - G01S 17/931: of land vehicles - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ## Abstract A LIDAR module includes: a light emitting device configured to emit a light signal in accordance with a combination of a plurality of partial signals; and one or more processors configured to: encode a sequence of symbols, wherein each symbol of the sequence of symbols is associated with a respective combination of the plurality of partial signals, and control the light emitting device to combine the plurality of partial signals as a function of the encoded sequence of symbols to emit the light signal. ## Claims ### Claim 1 A LIDAR module comprising: a light emitting device configured to emit a light signal in accordance with a combination of a plurality of partial signals; and one or more processors configured to: encode a sequence of symbols, wherein each symbol of the sequence of symbols is associated with a respective combination of the plurality of partial signals, and control the light emitting device to combine the plurality of partial signals as a function of the encoded sequence of symbols to emit the light signal, wherein the combination of the plurality of partial signals comprises a subtractive combination of the plurality of partial signals. ### Claim 2 (depends on 1) The LIDAR module according to claim 1, wherein the plurality of partial signals comprise a plurality of partial light signals, and wherein the combination of the plurality of partial signals comprises an optical combination of the plurality of partial light signals. ### Claim 3 (depends on 1) The LIDAR module according to claim 1, wherein the plurality of partial signals comprise a plurality of partial electrical signals, and wherein the combination of the plurality of partial signals comprises an electrical combination of the plurality of partial electrical signals. ### Claim 4 (canceled) ### Claim 5 (depends on 1) The LIDAR module according to claim 1, wherein the emitted light signal comprises one or more light pulses, and wherein each light pulse is associated with respective one or more symbols of the sequence of symbols. ### Claim 6 (depends on 5) The LIDAR module according to claim 5, wherein at least one light pulse is associated with a respective one symbol of the sequence of symbols, and/or wherein at least one light pulse is associated with a respective plurality of symbols of the sequence of symbols, and/or wherein the one or more light pulses comprise a plurality of light pulses, wherein a subset of the plurality of light pulses is associated with a respective one symbol of the sequence of symbols. ### Claim 7 (depends on 5) The LIDAR module according to claim 5, wherein a first light pulse associated with one or more first symbols has a first signal level different from a second signal level of a second light pulse associated with one or more second symbols. ### Claim 8 (depends on 5) The LIDAR module according to claim 5, wherein at least one light pulse comprises a plurality of pulse portions, each pulse portion having a respective signal level, wherein the signal levels of the plurality of pulse portions are defined by the one or more symbols associated with the at least one light pulse. ### Claim 9 (canceled) ### Claim 10 (depends on 1) The LIDAR module according to claim 1, wherein the light emitting device comprises a plurality of partial light sources, each partial light source being configured to emit a respective partial light signal. ### Claim 11 (depends on 10) The LIDAR module according to claim 10, wherein each partial light source of the plurality of partial light sources is configured to emit the respective partial light signal at a signal level different from the signal level of the other partial light signals emitted by the other partial light sources. ### Claim 12 (canceled) ### Claim 13 (depends on 10) The LIDAR module according to claim 10, wherein the light emitting device further comprises an emitter optics arrangement configured to receive the partial light signals, and to combine together the partial light signals to emit the light signal. ### Claim 14 (canceled) ### Claim 15 A method of emitting light in a LIDAR module, the method comprising: encoding a sequence of symbols, each symbol being associated with a respective combination of a plurality of partial signals; and controlling the combination of the plurality of partial signals as a function of the encoded sequence of symbols to emit the light signal, wherein the combination of the plurality of partial signals comprises one of an additive combination of the plurality of partial signals, or a subtractive combination of the plurality of partial signals. ### Claim 16 A LIDAR module comprising: a light emitting device configured to emit a light signal in accordance with a combination of a plurality of partial signals; and one or more processors configured to: encode a sequence of symbols, wherein each symbol of the sequence of symbols is associated with a respective combination of the plurality of partial signals, and control the light emitting device to combine the plurality of partial signals as a function of the encoded sequence of symbols to emit the light signal, wherein the combination of the plurality of partial signals comprises an additive combination of the plurality of partial signals. ### Claim 17 (depends on 16) The LIDAR module according to claim 16, wherein the emitted light signal comprises one or more light pulses, and wherein each light pulse is associated with respective one or more symbols of the sequence of symbols, wherein at least one light pulse comprises a first pulse portion having a first energy and a second pulse portion having a second energy, wherein the first energy is complementary to the second energy with respect to a total energy of the emitted light signal. ### Claim 18 (depends on 16) The LIDAR module of claim 16, wherein the light emitting device comprises a plurality of partial light sources, each partial light source being configured to emit a respective partial light signal. ### Claim 19 (depends on 18) The LIDAR module of claim 18, wherein the one or more processors are configured to generate a gating signal, the gating signal being representative of which partial light sources of the plurality of partial light sources to activate as a function of the encoded sequence of symbols, and wherein the one or more processors are configured to control the plurality of partial light sources by using the gating signal. ### Claim 20 (depends on 19) The LIDAR module of claim 19, wherein the one or more processors are configured to generate the gating signal by using a same clock signal as the clock signal determining a repetition rate of the light emitting device. ### Claim 21 (depends on 19) The LIDAR module of claim 19, wherein each partial light source is coupled to a respective switch, and that the gating signal includes a respective instruction for each switch to connect or disconnect the associated partial light source from a power supply. ### Claim 22 (depends on 18) The LIDAR module of claim 18, wherein each partial light source of the plurality of partial light sources is configured to emit the respective partial light signal at a signal level different from the signal level of the other partial light signals emitted by the other partial light sources, and at least one partial light source of the plurality of partial light sources is configured to emit twice the luminous flux of at least one other partial light source of the plurality of partial light sources. ### Claim 23 (depends on 1) The LIDAR module of claim 1, wherein the light emitting device comprises a light source configured to emit light, and that a beam splitting device configured to split the light emitted by the light source into a plurality of partial light signals, wherein the light emitting device further comprises an optical arrangement configured to absorb or redirect one or more of the plurality of partial light signals as a function of the encoded sequence. ### Claim 24 (depends on 23) The LIDAR module of claim 23, wherein the optical arrangement comprises a controllable light absorbing device configured to receive the plurality of partial light signals, and that the control of the light emitting device to combine the plurality of partial signals includes the one or more processors being configured to control the light absorbing device as a function of the encoded sequence to control the combination of the partial light signals.