Vehicle keyless system and on-vehicle device of vehicle keyless system
AssigneeCalsonic Kansei Corporation
InventorYuuki Nakashima
Life of this patent
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Abstract
At acquisition of a first unit command signal RC(1) of which storage is completed and in a case that the ring buffer stores a part of a second unit command signal RC(2), the CPU acquires the first unit command signal and the part of the second unit command signal upon receiving a first interrupt signal BQ(1), and then separates the first unit command signal and the part of the second unit command signal from each other. When having received a second interrupt signal BQ(2), the CPU acquires the remaining of the second unit command signal, and combines the remaining of the second unit command signal and the part of the second unit command signal. Accordingly, the second unit command signal once separated is acquired as a signal having all data completed.
Claims12
A vehicle keyless system comprising:
- a portable device configured to transmit a command signal;
- and
- an on-vehicle device configured to receive the command signal transmitted from the portable device and control an on-vehicle component in response to the command signal as received, wherein
- the portable device includes an operation unit, a portable-side control unit, and a transmission unit,
- the portable-side control unit controls the transmission unit to transmit, at a predetermined time interval, a unit command signal as the command signal in accordance with an operation made on the operation unit,
- the on-vehicle device includes a reception unit including a ring buffer, and an on-vehicle-side control unit,
- the reception unit receives the unit command signal, stores received unit command signals in the ring buffer in an order of reception, and outputs an interrupt signal to the on-vehicle-side control unit at each time when the reception unit completes storage of the received unit command signal in the ring buffer,
- the on-vehicle-side control unit acquires, when the interrupt signal is input, the unit command signal from the ring buffer, and executes command processing for controlling the on-vehicle component based on the unit command signal as acquired, and
- the on-vehicle-side control unit includes a signal acquisition processing unit configured to control an execution timing of acquisition and an amount of acquisition when the on-vehicle-side control unit acquires a target unit command from the ring buffer and in a case that the ring buffer stores at least a part of a unit command signal as received by the reception unit subsequent to the target unit command , so that the unit command signal as received subsequent to the target unit command signal is acquired in a state that all data is completed.
An on-vehicle device of a vehicle keyless system configured to receive a unit command signal transmitted from a portable device at a predetermined time interval and control an on-vehicle component, the on-vehicle device comprising:
- a reception unit including a ring buffer;
- and
- a control unit, wherein
- the reception unit receives the unit command signal, stores received unit command signals in the ring buffer in an order of reception, and outputs an interrupt signal to the control unit at each time when the reception unit completes storage of the received unit command signal in the ring buffer,
- the control unit acquires, when the interrupt signal is input, the unit command signal from the ring buffer and executes command processing for controlling the on-vehicle component based on the unit command signal as acquired, and
- the control unit includes a signal acquisition processing unit configured to control an execution timing of acquisition and an amount of acquisition when the control unit acquires a target unit command from the ring buffer and in a case that the ring buffer stores at least a part of a unit command signal as received by the reception unit subsequent to the target unit command signal, so that the unit command signal as received subsequent to the target unit command signal is acquired in a state that all data is completed.
Dependencies are inferred from the claim text.