Lamp control module, vehicle lamp, and signal processing device
AssigneeKoito Manufacturing Co., Ltd.
InventorYuichi Miyashita
Life of this patent
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Abstract
A vehicle lamp includes a turn signal lamp, a daytime running lamp, and a position lamp. A first driving circuit drives a first light source that is the turn signal lamp. A second driving circuit drives a second light source that serves as both the daytime running lamp and the position lamp. A signal processing device executes a software program to control the first driving circuit and the second driving circuit based on the turn synchronization signal, the first switch-on request, and the second switch-on request.
Claims13
A lamp control module used for a vehicle lamp comprising:
- a first driving circuit configured to drive a first light source that serves as a turn signal lamp of the vehicle lamp;
- a second driving circuit configured to drive a second light source that serves as both a daytime running lamp and a position lamp of the vehicle lamp;
- an input interface circuit configured to receive a turn synchronization signal for instructing a blinking of the turn signal lamp;
- a bus interface circuit configured to receive a first switch-on request for instructing switch-on/off of the daytime running lamp and a second switch-on request for instructing switch-on/off of the position lamp;
- and
- a signal processing device configured to execute a software program to control the first driving circuit based on the turn synchronization signal, and control the second driving circuit based on the first switch-on request and the second switch-on request, thereby driving the first light source and the second light source, respectively.
A signal processing device used for a vehicle lamp,
- wherein a turn signal lamp of the vehicle lamp includes a first light source, and a daytime running lamp and a position lamp of the vehicle lamp share a second light source,
- the signal processing device executes a software program to perform:
- generating a turn switch-on request that becomes a first level in a blinking instruction state where a turn synchronization signal is a pulse form, and becomes a second level in a switch-off instruction state where a level of the turn synchronization signal is fixed, and
- controlling a state of the first light source based on the turn synchronization signal for instructing a blinking of the turn signal lamp, and controlling a state of the second light source based on the turn switch-on request, a first switch-on request for instructing switch-on/off of the daytime running lamp, and a second switch-on request for instructing switch-on/off of the position lamp, thereby driving the first light source and the second light source, respectively,
- the controlling the state of the second light source is performed based on a table in which the turn switch-on request, the turn synchronization signal, the first switch-on request, and the second switch-on request are inputs, and a state of the second light source is an output.
Dependencies are inferred from the claim text.