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US 11,410,699 B1Granted
USB-C PD powered phono preamplifer
AssigneeLenbrook Industries Limited
InventorsGregory R. Stidsen, Andrew Haines, Jens Torben Sonderskov, Taresh Vadgama
Life of this patent
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Abstract
A phono-preamplifier for processing audio output signals from a turntable is powered by a variable voltage adapter such as a USB-C PD power supply adapter.
Claims22
A phono-preamplifier powered by a variable voltage adapter for processing audio output signals from a turntable, comprising:
- an audio input port configured to be coupled by a cable to the turntable to receive the audio output signals from the turntable;
- a power input port configured to be coupled by a cable to the variable voltage adapter to receive power from the variable voltage adapter;
- power controller subsystem coupled to the power input port and configured to manage the power received at the power input port;
- a microprocessor subsystem coupled to the power controller subsystem to control operation of the power controller subsystem;
- an operational amplifier circuit coupled to the audio input port and the power controller subsystem for amplifying and conditioning the audio output signals from the turntable;
- and
- an analog-to-digital converter (ADC) coupled to the operational amplifier circuit for converting amplified and conditioned audio output signals from the operational amplifier circuit to a digital bitstream output,
- wherein the microprocessor subsystem is coupled to the ADC to receive and process the digital bitstream output for transmission over wired or wireless networks to be rendered on one or more speaker devices.
5 more elements
A method of powering a phono-preamplifier for processing audio output signals from a turntable using a variable voltage adapter, comprising the steps of:
- receiving the audio output signals from the turntable;
- receiving power from the variable voltage adapter;
- managing the power from the variable voltage adapter;
- amplifying and conditioning the audio output signals from the turntable using power from the variable voltage adapter;
- converting the amplified and conditioned audio output signals to a digital bitstream output;
- and
- processing the digital bitstream output for transmission over wired or wireless networks to be rendered on one or more speaker devices.
4 more elements
A USB-C PD powered phono-preamplifier for processing audio output signals from a turntable, comprising:
- an audio input port configured to be coupled by a cable to the turntable to receive the audio output signals from the turntable;
- a power input port configured to be coupled by a cable to a USB-C powered device power supply adapter to receive power from the USB-C powered device power supply adapter;
- power controller subsystem coupled to the power input port and configured to manage the power received at the power input port;
- a microprocessor subsystem coupled to the power controller subsystem to control operation of the power controller subsystem;
- an operational amplifier circuit coupled to the audio input port and the power controller subsystem for amplifying and conditioning the audio output signals from the turntable;
- and
- an analog-to-digital converter (ADC) coupled to the operational amplifier circuit for converting amplified and conditioned audio output signals from the operational amplifier circuit to a digital bitstream output,
- wherein the microprocessor subsystem is coupled to the ADC to receive and process the digital bitstream output for transmission over wired or wireless networks to be rendered on one or more speaker devices.
5 more elements
Dependencies are inferred from the claim text.