Abstract: A positioning device measures a position of a vehicle by including a controller. The controller provides (i) a first positioning system to obtain a first positioning result having a first accuracy by performing positioning using a signal from a GNSS satellite and (ii) a second positioning system to obtain a second positioning result having a second accuracy higher than the first accuracy, by using acquired vehicle-related information, instead of or in addition to the first positioning result. The controller selects, as a selected positioning system to obtain a selected positioning result, either (i) the first positioning system or (ii) the second positioning system. In response to determining that the second accuracy of the second positioning result is lower than the first accuracy of the first positioning result, the controller is configured to switch the selected positioning system to select the first positioning system.

Abstract: A positioning device performs positioning to measure a position of a vehicle. The positioning device receives a signal transmitted from a GNSS satellite. The positioning device perform a positioning calculation using the signal. The positioning device communicates with a positioning server. The positioning device selects, as a system for the positioning, one of a first positioning system and a second positioning system.

Abstract: A positioning device performs positioning to measure a position of a vehicle. The positioning device receives a signal transmitted from a GNSS satellite. The positioning device perform a positioning calculation using the signal. The positioning device communicates with a positioning server. The positioning device selects, as a system for the positioning, one of a first positioning system and a second positioning system.

Abstract: A positioning device measures a position of a vehicle by including a controller. The controller provides (i) a first positioning system to obtain a first positioning result having a first accuracy by performing positioning using a signal from a GNSS satellite and (ii) a second positioning system to obtain a second positioning result having a second accuracy higher than the first accuracy, by using acquired vehicle-related information, instead of or in addition to the first positioning result. The controller selects, as a selected positioning system to obtain a selected positioning result, either (i) the first positioning system or (ii) the second positioning system. In response to determining that the second accuracy of the second positioning result is lower than the first accuracy of the first positioning result, the controller is configured to switch the selected positioning system to select the first positioning system.

Abstract: There is provided an electronic device that can heat an auxiliary battery as a standby power supply and check a function of the auxiliary battery with a simpler configuration. The device is provided with a heater resistor for heating an auxiliary battery incorporated in an in-vehicle emergency notification device as a standby power supply for a main battery, and is also provided with first and second power supply switches for forming first and second power supply paths for supplying power from the main battery and the auxiliary battery to the heater resistor, respectively. A control circuit controls the first and second power supply switches to form the power supply paths so as to conduct a current to the heater resistor.

Abstract: A circuit board structure capable of heating a battery without requiring cost for adoption and replacement of the battery is provided. In the mounting of an auxiliary battery incorporated in an in-vehicle emergency notification device as a standby power supply for a main battery and a heater resistor for heating the auxiliary battery, a heat transfer mechanism for transferring heat generated by the heater resistor to the auxiliary battery is provided on a printed board. Further, the auxiliary battery is detachably fixed on the printed board through the heat transfer mechanism.

Abstract: A circuit board structure capable of heating a battery without requiring cost for adoption and replacement of the battery is provided. In the mounting of an auxiliary battery incorporated in an in-vehicle emergency notification device as a standby power supply for a main battery and a heater resistor for heating the auxiliary battery, a heat transfer mechanism for transferring heat generated by the heater resistor to the auxiliary battery is provided on a printed board. Further, the auxiliary battery is detachably fixed on the printed board through the heat transfer mechanism.

Abstract: There is provided an electronic device that can heat an auxiliary battery as a standby power supply and check a function of the auxiliary battery with a simpler configuration. The device is provided with a heater resistor for heating an auxiliary battery incorporated in an in-vehicle emergency notification device as a standby power supply for a main battery, and is also provided with first and second power supply switches for forming first and second power supply paths for supplying power from the main battery and the auxiliary battery to the heater resistor, respectively. A control circuit controls the first and second power supply switches to form the power supply paths so as to conduct a current to the heater resistor.

Abstract: A display driving circuit (104) comprises a table generating unit (64) which generates a table necessary for driving according to a color representation instruction, based on pallet data which is a driving condition of a display device corresponding to the color representation and according to a time-sequential color representation instruction which is instructed in advance, a table storage unit (62) which stores these tables, and a pallet data setting unit (114) which refers to these tables, obtains pallet data corresponding to each lighting cycle at a lighting timing delayed with a delay period for each channel unit number stored in a delay period data storage unit (40), assigns the obtained pallet data while sequentially switching the pallet data according to switching of the lighting cycle, and sets a driving condition of each display device of a display channel unit.

Abstract: A light-emitting element drive circuit system for driving a light-emitting element includes a current circuit section that drives the light-emitting element at a preset drive current value, and a current value setting section. The current value setting section sets the drive current value so that the drive current value is changed during a preset transition period from a first current value to a second current value that is not equal to the first current value, and changed during a preset transition period from the second current value to a third current value that is not equal to both the first current value and the second current value.

Abstract: A light-emitting element drive circuit system for driving a light-emitting element includes a current circuit section that drives the light-emitting element at a preset drive current value, and a current value setting section. The current value setting section sets the drive current value so that the drive current value is changed during a preset transition period from a first current value to a second current value that is not equal to the first current value, and changed during a preset transition period from the second current value to a third current value that is not equal to both the first current value and the second current value.

Abstract: A display driving circuit (104) comprises a table generating unit (64) which generates a table necessary for driving according to a color representation instruction, based on pallet data which is a driving condition of a display device corresponding to the color representation and according to a time-sequential color representation instruction which is instructed in advance, a table storage unit (62) which stores these tables, and a pallet data setting unit (114) which refers to these tables, obtains pallet data corresponding to each lighting cycle at a lighting timing delayed with a delay period for each channel unit number stored in a delay period data storage unit (40), assigns the obtained pallet data while sequentially switching the pallet data according to switching of the lighting cycle, and sets a driving condition of each display device of a display channel unit.

Abstract: A display driving device (50) which drives a display device of a display channel unit (20) according to a time-sequential color representation instruction from a control device (30) comprises a table generating unit (64) which generates a table necessary for driving according to the color representation instruction based on pallet data which is a driving condition of a display device corresponding to a color representation and according to the time-sequential color representation instruction which is instructed in advance, a table storage unit (62) which stores these tables, and a pallet data setting unit (76) which refers to these tables, obtains pallet data corresponding to each lighting cycle, assigns the obtained pallet data while sequentially switching the pallet data according to switching of the lighting cycle, and sets the driving condition of each display device of the display channel unit.

Abstract: A display driving circuit (50) comprises a table generating unit (64) which generates a table necessary for driving according to a color representation instruction based on pallet data which is a driving condition of a display device corresponding to a color representation and according to the time-sequential color representation instruction which is instructed in advance, a table storage unit (62) which stores these tables, and a pallet data setting unit (76) which refers to these tables, obtains pallet data corresponding to each lighting cycle, assigns the obtained pallet data while sequentially switching the pallet data according to switching of the lighting cycle, and sets the driving condition of each display device of the display channel unit. The lighting cycle is switched based on a timing of obtaining an internal switching signal or a timing of obtaining an external input signal.