Patent ID: 11956602
Assignee: ROBERT BOSCH GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
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.