Abstract: A vehicle-mounted device that is capable of attaching and detaching a portable device including a rechargeable battery, and supplies an electric power to the portable device in a attachment state where the portable device is attached, the electronic device characterized by comprising: a controller that confirms completion of the operation of the portable device when a power source of the electronic device is turned off in the attachment state; and a voltage converting device that stops supplying the electric power to the portable device after the confirmation by the controller.

Abstract: An electronic device that can reduce a noise caused by a signal or data being always output. A vehicle-mounted device includes: a player that reads out and outputs data recorded in a CD or a DVD (i.e., a TBCK signal, a TSD0 signal, and a TWS signal); a controller that receives the data (i.e., the TBCK signal, the TSD0 signal, and the TWS signal) output from the player, and executes various controls based on the received data; and an interrupt unit that interrupts transmission of the data recorded in the CD or the DVD to the controller until the CD or the DVD is inserted into the player.

Abstract: An electronic device that can reduce a noise caused by a signal or data being always output. A vehicle-mounted device includes: a player that reads out and outputs data recorded in a CD or a DVD (i.e., a TBCK signal, a TSD0 signal, and a TWS signal); a controller that receives the data (i.e., the TBCK signal, the TSD0 signal, and the TWS signal) output from the player, and executes various controls based on the received data; and an interrupt unit that interrupts transmission of the data recorded in the CD or the DVD to the controller controller until the CD or the DVD is inserted into the player.

Abstract: An electronic apparatus that includes a circuit substrate being installed in a casing. The electronic apparatus has first and second groove portions that are formed on a first surface and a second surface of a heat sink, respectively. The heat sink discharges heat from a heat element on the circuit substrate to the outside of the casing. The electronic apparatus has a through-hole portion that is formed at an intersection point of the first groove portion formed on the first surface of the heat sink and the second groove portion formed on the second surface of the heat sink.

Abstract: A vehicle-mounted device that is capable of attaching and detaching a portable device including a rechargeable battery, and supplies an electric power to the portable device in a attachment state where the portable device is attached, the electronic device characterized by comprising: a controller that confirms completion of the operation of the portable device when a power source of the electronic device is turned off in the attachment state; and a voltage converting device that stops supplying the electric power to the portable device after the confirmation by the controller.

Abstract: An electronic apparatus in which a circuit substrate is installed in a casing, including: first and second groove portions that are formed on a first surface and a second surface of a heat sink, respectively, the heat sink discharging heat from a heat element on the circuit substrate to the outside of the casing; and a through-hole portion that is formed at an intersection point of the first groove portion formed on the first surface of the heat sink and the second groove portion formed on the second surface of the heat sink.