Abstract: An indoor unit included in an air conditioner that includes an outdoor unit includes a power receiving circuit (PR2), a low-frequency transmission and reception circuit as a first reception circuit, a high-frequency transmission and reception circuit as a transmission and reception circuit, and an inner-controller. The low-frequency transmission and reception circuit receives a current signal transmitted from an outdoor unit by using a current loop formed by a power line included in power supply wiring. For a first communication state in which physical connection between with the outdoor unit is recognized and a second communication state in which communication for operation of the air conditioner is performed between with the outdoor unit, the inner-controller selects use of the low-frequency transmission and reception circuit and the high-frequency transmission and reception circuit in the first communication state and the second communication state.

Abstract: A tooth whitening composition with a high level of whitening effectiveness over the entire tooth whitening composition application includes colloidal platinum as a platinum catalyst in a peroxide-containing oral composition. Whitening effectiveness can be enhanced by application of a tooth whitening composition containing colloidal platinum to the teeth surface followed by photo-irradiation of the application site.

Abstract: A cooling structure for a working vehicle in which a shroud is attached to a radiator provided to a vehicle body, and an air-cooling fan is made face to an airflow opening of the shroud, wherein the shroud comprises a shroud body attached to the radiator, and an opening member having the airflow opening, and further comprises securing means capable of fixing the opening member to the shroud body, and of freely adjusting a fixing position of the opening member with respect to the shroud body, and a relative position between the air-cooling fan and the airflow opening of the shroud is made freely adjustable. With the configuration above, the sufficient amount of heat radiated by the radiator can be obtained without causing the disadvantages such as increased noise.

Abstract: A cooling structure for a working vehicle in which a shroud is attached to a radiator provided to a vehicle body, and an air-cooling fan is made face to an airflow opening of the shroud, wherein the shroud comprises a shroud body attached to the radiator, and an opening member having the airflow opening, and further comprises securing means capable of fixing the opening member to the shroud body, and of freely adjusting a fixing position of the opening member with respect to the shroud body, and a relative position between the air-cooling fan and the airflow opening of the shroud is made freely adjustable. With the configuration above, the sufficient amount of heat radiated by the radiator can be obtained without causing the disadvantages such as increased noise.

Abstract: A crosstalk error controller includes a crosstalk analyzer for detecting a crosstalk error net in which a crosstalk error has occurred, a noise source detector for detecting noise source nets being noise sources to the crosstalk error net, and a reducing unit for lowering a signal level of a noise source net to thereby suppress the crosstalk error in the crosstalk error net. It is therefore possible for a crosstalk error controller to control a crosstalk error even if the wiring density is high.

Abstract: A crosstalk error controller includes a crosstalk analyzer for detecting a crosstalk error net in which a crosstalk error has occurred, a noise source detector for detecting noise source nets being noise sources to the crosstalk error net, and a reducing unit for lowering a signal level of a noise source net to thereby suppress the crosstalk error in the crosstalk error net. It is therefore possible for a crosstalk error controller to control a crosstalk error even if the wiring density is high.

Abstract: A color cathode ray tube has a three in-line beam electron gun. The electron gun includes a first group of focus electrodes supplied with a first fixed focus voltage and a second group of focus electrodes supplied with a second focus voltage comprised of a fixed voltage and a dynamic voltage synchronized with beam deflection. Plural axially spaced electrostatic quadrupole lenses are formed between facing ones of the first and second groups of focus electrodes. One of the plural electrostatic quadrupole lenses nearest to the cathodes is configured so as to produce a lens action weaker on two side electron beams than on the center electron beam.

Abstract: A system comprising a frame sequential type color imaging device, a color imaging device provided with a color filter, an illuminating light outputting device which can output illuminating lights corresponding to these different color imaging devices, a signal processing device processing the signals corresponding to the respective color imaging devices and a color monitor displaying the processed color video signals so that any color imaging device can be used.