Abstract: A door mirror structure reduces vehicle width when the mirror is retracted, prevents vibration of the mirror when the vehicle is traveling, and improves visibility from the vehicle interior. Embodiments include a door mirror body unit; and a mirror base having a tip portion fixed to the door mirror body unit and a base end portion away from the tip portion. The base end portion is attached to the side door so that the door mirror body unit and the mirror base are movable between a mirror use position at which the mirror is visible from a vehicle interior and a retraction position located on an inner side in a vehicle width direction of the mirror use position. A driving unit moves the door mirror body unit and the mirror base between the mirror use position and the retraction position. The driving unit is located in the side door.

Abstract: A reception-side apparatus includes: M receive antennas; and a processor configured to execute a first process of acquiring a first signal received from a first transmission-side apparatus from among signals simultaneously received from the N transmission-side apparatuses by receive diversity processing, and acquiring first data by demodulating and decoding the first signal. In the case of N>M, the processor acquires, for each of all patterns of a combination of a first signal, second signals from M?1 transmission-side apparatuses which are to be cancelled by receive diversity processing and third signals from N?M transmission-side apparatuses which are not to be cancelled by the receive diversity processing, a power ratio of power of the first signal relative to total power of the second and third signals based on a predetermined weight and a channel estimate of each signal, and selects a combination with the largest power ratio from among all the patterns.

Abstract: A package includes: a first portion having defined therein a mounting region in which an electronic component is mounted; and a second portion connected to the first portion. An area of the second portion is larger than an area of the first portion in plain view viewed from the direction normal to a surface through which the first portion and the second portion are connected.

Abstract: A wireless communication control method suppresses interference using an MMSE weight in an environment of wireless communication where the number of transmission stations transmitting a signal to a receiving station is larger than the number of reception antennas of the receiving station. The receiving station calculates power of an interference signal included in a signal received by the receiving station from the transmission stations the number of which is larger than the number of reception antennas, the interference signal corresponding to a part by which the number of transmission stations exceeds the number of reception antennas. The receiving station calculates the MMSE weight depending on the power of the interference signal, recalculates the power of the interference signal using the MMSE weight, and recalculates the MMSE weight depending on the recalculated power of the interference signal.

Abstract: A surface treatment agent which is chromate-free and which can impart excellent coating adhesion and corrosion resistance to a metal material (in particular, a metal material treated with a phosphate), a surface treatment method that uses the surface treatment agent, and a surface treated metal material that is treated using the method are provided. The agent is for a metal material and contains a water-soluble ethylene glycol monoalkyl ether. It is preferable for this surface treatment agent to contain at least one type of metal compound selected from among a water-soluble vanadium compound, a water-soluble titanium compound, a water-soluble zirconium compound and a water-soluble hafnium compound.

Abstract: A surface treatment agent which is chromate-free and which can impart excellent coating adhesion and corrosion resistance to a metal material (in particular, a metal material treated with a phosphate), a surface treatment method that uses the surface treatment agent, and a surface treated metal material that is treated using the method are provided. The agent is for a metal material and contains a water-soluble ethylene glycol monoalkyl ether. It is preferable for this surface treatment agent to contain at least one type of metal compound selected from among a water-soluble vanadium compound, a water-soluble titanium compound, a water-soluble zirconium compound and a water-soluble hafnium compound.

Abstract: Method and appartus suitable for forming promptly a phosphate film of excellent performance for cold drawing on the steel wires are disclosed. The steel wires are descaled by cathodic electrolysis in acid solution, and thereafter, phosphate film are formed by cathodic electrolysis on the steel wires. Contacting with the solution containing colloidal titanium are preferable to be carried out between cathodic descaling process and phosphate film forming process. Descaling of cathodic electrolysis may preferably be performed in acid solution at a temperature of lower than 90° C. and in 1˜100 A/dm2. Phosphate film forming may preferably be performed by using electrolyte containing Zn ion, phosphoric acid ion and nitric acid ion, at a temperature of lower than 90° C., in 1˜100 A/dm2 and for 1˜30 seconds.