COMMUNICATION DEVICE

• Main Authors: OTAKI YUKIO, SUZUKI TOMOTAKA
• Format: Patent
• Language: English; Japanese
• Published: 25.04.2019
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; DIAGNOSIS; ELECTRICITY; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

To ensure the reliability of data communication according to the communication environment and the use mode by a user in a communication device that can be grasped by the user.SOLUTION: A communication device that can measure biological information includes a housing that can be grasped by a user, a wireless communication unit disposed in the housing and communicating with an external device, an external antenna provided in the housing, a first circuit provided between the external antenna and the wireless communication unit, a second circuit provided between the external antenna and the wireless communication unit and having an impedance characteristic different from the first circuit, and a switching unit that performs switching between a first state in which the external antenna and the wireless communication unit are electrically connected via the first circuit and a second state in which the external antenna and the wireless communication unit are electrically connected via the second circuit.SELECTED DRAWING: Figure 9A 【課題】ユーザにより把持可能な形態を有する通信機器において、通信環境やユーザによる使用態様に応じてデータ通信の信頼性を確保すること。【解決手段】生体情報を測定可能な通信機器において、ユーザが把持可能な形態の筐体と、前記筐体内に配置され、外部機器と通信を行う無線通信部と、前記筐体に設けられる外部アンテナと、前記外部アンテナと前記無線通信部との間に設けられる第１回路と、前記外部アンテナと前記無線通信部との間に設けられ、前記第１回路とはインピーダンス特性が異なる第２回路と、前記外部アンテナと前記無線通信部とを前記第１回路を介して電気的に接続する第１状態と、前記外部アンテナと前記無線通信部とを前記第２回路を介して電気的に接続する第２状態との間を切り換える切換部とを含む、通信機器が提供される。【選択図】図９Ａ