Component for human-powered vehicle and control system for human-powered vehicle

A component for a human-powered vehicle, the component comprising:

• an antenna configured to receive a predetermined signal from at least one transmitter that is separate from the component;
• an amplifier electrically connected to the antenna and configured to amplify the predetermined signal, received from the antenna, in intensity;
• a communicator configured to receive the predetermined signal via the amplifier;
• and
• an electronic controller configured to control the communicator in accordance with a communication control state and control the amplifier in accordance with an amplification control state, wherein:
• the communication control state includes a first communication control state and a second communication control state in which power consumption of the communicator in the second communication control state is greater than power consumption of the communicator in the first communication control state;
• the amplification control state includes a first amplification control state and a second amplification control state in which power consumption of the amplifier in the second amplification control state is greater than power consumption of the amplifier in the first amplification control state;
• and
• the electronic controller is configured to switch the amplification control state from the first amplification control state to the second amplification control state in accordance with at least one of the predetermined signal and a state of the human-powered vehicle in a case where the communication control state is the second communication control state.

A component for a human-powered vehicle, the component comprising:

• an antenna configured to receive a predetermined signal from at least one transmitter that is separate from the component;
• an amplifier electrically connected to the antenna and configured to amplify the predetermined signal, received from the antenna, in intensity;
• a communicator configured to receive the predetermined signal via the amplifier;
• and
• an electronic controller configured to control the amplifier in accordance with an amplification control state, wherein:
• the amplification control state includes a first amplification control state and a second amplification control state in which power consumption of the amplifier in the second amplification control state is greater than power consumption of the amplifier in the first amplification control state;
• the electronic controller is configured to control the amplifier in the first amplification control state so that the amplifier stops amplifying the predetermined signal in intensity;
• and
• the electronic controller is configured to switch the amplification control state to the first amplification control state in a case where the amplification control state is the second amplification control state, and where the predetermined signal is not received and the human-powered vehicle is continuously maintained in a predetermined state over a predetermined period or longer.

A component for a human-powered vehicle, the component comprising:

• an antenna configured to perform at least one of reception or transmission of a predetermined signal from or to at least one communication device that is separate from the component;
• an amplifier electrically connected to the antenna and configured to amplify the predetermined signal in intensity;
• a communicator that performs at least one of reception of the predetermined signal via the amplifier and transmission of the predetermined signal via the amplifier;
• and
• an electronic controller configured to control the amplifier in accordance with an amplifier control state;
• the amplifier control state including a first amplification control state and a second amplification control state in which power consumption of the amplifier is greater than power consumption of the amplifier in the first amplification control state;
• the second amplification control state includes a first intermittent control state and a second intermittent control state in which power consumption of the amplifier in the second intermittent control state is greater than power consumption of the amplifier in the first intermittent control state;
• the electronic controller is configured to control the amplifier in the first intermittent control state so that an amplification cycle of the amplifier is a first amplification cycle;
• and
• the electronic controller is configured to control the amplifier in the second intermittent control state so that the amplification cycle is a second amplification cycle that is shorter than the first amplification cycle.

A component for a human-powered vehicle, the component comprising:

• an antenna configured to perform at least one of reception or transmission of a predetermined signal from or to at least one communication device that is separate from the component;
• an amplifier electrically connected to the antenna;
• a controller configured to switch a state of the amplifier between an activation state and a standby state;
• and
• a communicator configured to transfer the predetermined signal via the antenna and the amplifier, wherein:
• the amplifier includes an amplification circuit configured to amplify the predetermined signal in intensity, transfer paths, and a switching unit configured to select one of the transfer paths;
• the transfer paths include a first transfer path that transfers the predetermined signal between the antenna and the communicator via the amplification circuit, and a second transfer path that transfers the predetermined signal between the antenna and the communicator without using the amplification circuit;
• the controller is configured to cause the switching unit to switch between using the first transfer path in the activation state and the second transfer path in the standby state;
• the controller is configured to control the amplifier in accordance with an amplifier control state, wherein the amplifier control state includes a first amplification control state and a second amplification control state in which power consumption of the amplifier is greater than power consumption of the amplifier in the first amplification control state;
• and
• the controller is configured to switch the amplification control state to the first amplification control state in a case where the amplification control state is the second amplification control state, and where the predetermined signal is not received and the human-powered vehicle is continuously maintained in a predetermined state over a predetermined period or longer.