US 11,956,602 B2
Signal level display for an audio device, and audio device
Peter Reislhuber, Laberweinting (DE); and Franz Lermer, Pilsting-Ganacker (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/617,147
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed May 25, 2020, PCT No. PCT/EP2020/064371
§ 371(c)(1), (2) Date Dec. 7, 2021,
PCT Pub. No. WO2020/249378, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 10 2019 208 464.8 (DE), filed on Jun. 11, 2019.
Prior Publication US 2022/0240037 A1, Jul. 28, 2022
Int. Cl. H04R 29/00 (2006.01); H05B 45/10 (2020.01); H05B 45/20 (2020.01)
CPC H04R 29/008 (2013.01) [H05B 45/10 (2020.01); H05B 45/20 (2020.01)] 13 Claims
OG exemplary drawing
 
1. A signal level display (2) for an audio device (1), the signal level display comprising:
a first lamp (7) of a first color and a second lamp (8) of a second color,
a control device (10) for driving the first and second lamps (7, 8) on the basis of a signal level to be displayed, wherein the control device (10) is configured to display the signal level in at least three steps via the lamps (7, 8),
wherein the control device (10) is configured to drive at least one of the first and second lamps (7, 8) in such a way that the at least one of the lamps (7, 8) is operated at least two different intensities not equal to zero to display the different steps of the signal level,
wherein the control device (10) is configured to display the steps of the signal level by mixing the colors of the lamps in operation,
wherein a first connection connects the first lamp to a first controller output via a first resistor, a second connection connects the second lamp to a second controller output via a second resistor, and a third connection connects the second lamp to a third controller output via a diode and a third resistor,
wherein the mixing of the colors of the lamps (7, 8) to produce the signal level output depends upon a first output from the first controller output through the first connection, a second output from the second controller output through the second connection, and a third output from the third controller output through the third connection,
wherein the first intensity of the at least two different intensities comprises of producing a signal level output from the second output from the second controller output and the third output from the third controller output, and the second intensity of the at least two different intensities comprises of producing a signal level output from the second output from the second controller output.