PROBLEM TO BE SOLVED: To provide a portable machine capable of preventing deterioration in a sense of use.SOLUTION: A CPU 2 is capable of performing a synchronous serial communication with a vibration sensor 6 in accordance with an SPI system or an I2C system and periodically checks a status of the vibration sensor 6 in accordance with a specification of the communication. When there is abnormality in the status of the vibration sensor 6, the CPU 2 discriminates the presence of a failure in the vibration sensor 6. At such a time, the CPU 2 invalidates input from the vibration sensor 6 while switching an Enable terminal to Lo. For example, INT interruption to the CPU 2 is also invalidated. Namely, when a failure occurs in the vibration sensor 6, the CPU 2 disconnects the vibration sensor 6 in such a manner that operation is prevented from being influenced by a behavior of the vibration sensor 6. In such a case, the CPU 2 redirects an RF signal from an RFIC 5 when an LF signal is actually received, without depending on INT interruption from the vibration sensor 6 and while waiting for the reception of the LF signal from a coil antenna group 3.SELECTED DRAWING: Figure 1

    【課題】使用感の劣化防止を可能にした携帯機を提供すること。【解決手段】CPU2は、振動センサ6との間でSPI方式又はI2C方式による同期式シリアル通信が可能であり、当該通信の規格に則って振動センサ6のステータスを定期的にチェックする。CPU2は、振動センサ6のステータスに異常が見られるとき、振動センサ6の故障が有ると判定する。このとき、CPU2は、Enable端子をLoに切り替えつつ、振動センサ6からの入力を無効とする。例えば、CPU2へのINT割込みも無効となる。つまり、CPU2は、振動センサ6の故障時に、その振動センサ6の挙動にとらわれないように当該振動センサ6を切り離す。この場合、CPU2は、振動センサ6からのINT割込みによらず、コイルアンテナ群3によりLF信号の受信を待機しつつ、実際にLF信号が受信されたとき、RFIC5からRF信号を返信する。【選択図】図1


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    Title :

    PORTABLE MACHINE


    Additional title:

    携帯機


    Contributors:

    Publication date :

    2018-01-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04Q Wähltechnik , SELECTING / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H03J TUNING RESONANT CIRCUITS , Abstimmen von Resonanzkreisen [Tuner] / H04B TRANSMISSION , Übertragung



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