Pen and sensor controller
AssigneeWacom Co., Ltd.
InventorSadao YAMAMOTO
Life of this patent
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Abstract
A pen includes reception circuitry configured to receive an uplink signal generated according to a first protocol. The pen includes transmission circuitry configured to transmit a downlink signal on the basis of a reception timing of the uplink signal and a command included in the uplink signal. In a case where the reception circuitry, after receiving the uplink signal, in a period in which the next uplink signal is receivable, receives an uplink signal that is in a special state instead of receiving the next uplink signal normally, the transmission circuitry transmits, according to the first protocol, the downlink signal including either data according to the command or default data.
Claims15
An integrated circuit for a pen, the integrated circuit comprising:
- reception circuitry configured to receive an uplink signal generated according to a first protocol;
- and
- transmission circuitry configured to transmit, according to the first protocol, a downlink signal based on a reception timing of the uplink signal and a command included in the uplink signal, wherein,
- in a case where the reception circuitry receives the uplink signal that is in a normal state (uplink signal NUS) in a first period, the transmission circuitry transmits the downlink signal including data according to the command included in the uplink signal NUS, and
- in a case where the reception circuitry receives the uplink signal that is in a special state (uplink signal SUS) in a second period subsequent to the first period, the transmission circuitry transmits the downlink signal including data according to the command included in the uplink signal NUS received in the first period.
An integrated circuit for a pen, the integrated circuit comprising:
- reception circuitry configured to receive both a first uplink signal generated according to a first protocol and a second uplink signal generated according to a second protocol different from the first protocol,
- control circuitry configured to control operation of the pen in at least two operation modes, and
- transmission circuitry configured to transmit a downlink signal, wherein,
- in a case where the reception circuitry receives the second uplink signal, the control circuitry enters a second operation mode according to the second protocol, and
- regardless of whether the reception circuitry operating in the second operation mode receives the first uplink signal according to the first protocol or the second uplink signal according to the second protocol, the transmission circuitry operating in the second operation mode transmits a second downlink signal according to the second protocol.
Dependencies are inferred from the claim text.