A wiring board includes a resin substrate in which reinforcement members are arranged horizontally, a through electrode filled in a through hole penetrating the substrate in a thickness direction, and wiring layers respectively formed on both surfaces of the substrate and electrically connected to each other via the through electrode. An IPTV subscriber has the capability to capture, using a special button on the remote control, the current video image content displaying, for example, contact information in an advertisement. The liner is installed by simply dropping its tubular portion into the section of tubing and then threading the box coupler onto the section tubing around the upper end of the liner. In one embodiment, the memory scan is appended to a user erase operation, a flash block is swapped with another bock if the state sensed indicates charge gain, and a flash cell is programmed up if the state sensed indicates charge loss.