Antenna system and television receiver

A television receiver comprising antenna system which includes an antenna capable of responding to a horizontally-polarized-wave and a vertically-polarized-wave and receives digital television broadcasting signals, the antenna system further comprising:

• a memory section to store an outdoor reception program for receiving television broadcasting signals when the antenna is installed outdoors, and an indoor reception program for receiving the television broadcasting signals when the antenna is installed indoors;
• an acquisition section to configure in the antenna a horizontally-polarized-wave reception mode or a vertically-polarized-wave reception mode, and to acquire reception information of the television broadcasting signals by means of the antenna system in the respective reception modes;
• a determination section to determine whether the antenna is installed outdoors or indoors, based on the reception information acquired by the acquisition section when the antenna is in the horizontally-polarized-wave reception mode or in a vertically-polarized-wave reception mode;
• a configuration section to control the outdoor reception program stored in the memory section when the determination section determines that the antenna is installed outdoors, and the indoor reception program stored in the memory section when the determination section determines that the antenna is installed indoors;
• and
• a control section to control the reception of the television broadcasting signals by the antenna system through the outdoor reception program or the indoor reception program, both configured by the determination section,
• wherein the reception information acquired by the acquisition section includes:
• a receivable information obtained when the television broadcasting signal is received in the horizontally-polarized-wave reception mode or in the vertically-polarized-wave reception mode, which are respectively configured in the antenna;
• a first error rate acquired from the television broadcasting signal received by the antenna system when the antenna is configured in the horizontally-polarized-wave reception mode and the receivable information is acquired;
• and
• a second error rate acquired from the television broadcasting signal received by the antenna system when the antenna is configured in the vertically-polarized-wave reception mode and the receivable information is acquired, and
• the determination section determines:
• that the antenna is installed in the out-of-doors, in a case that the receivable information is acquired only when the horizontally-polarized-wave reception mode is configured in the antenna by the acquisition section;
• that the antenna is installed indoors, in a case that the receivable information is acquired only when the vertically-polarized-wave reception mode is configured in the antenna by the acquisition section;
• that the antenna is installed outdoors by calculating a difference by subtracting the second error rate from the first error rate, which error rates are acquired by the acquisition section, in a case that the receivable information is acquired both in the horizontally-polarized-wave reception mode and in the vertically-polarized-wave reception mode when they are configured in the antenna by the acquisition section and when the calculated difference is larger than a predetermined threshold value;
• and
• that the antenna is installed indoors when the calculated difference is not larger than the predetermined threshold value.