Abstract: Optimal RF AGC points are individually set for a terrestrial digital television signal and a CATV digital signal. A switch is changed according to whether an input signal is a terrestrial digital television signal or a CATV digital signal. If the terrestrial digital television signal is input, the voltage for setting the RF AGC point is set to a reference voltage V1 output from a first reference power supply source. If the CATV digital signal is input, the voltage for setting the RF AGC point is set to a reference voltage V2 output form a second reference power supply source. A comparator then outputs an RF AGC signal according to a difference between an IF AGC signal and the reference voltage.

Abstract: A method is provided for turning a first work and a second work held on a first spindle and a second spindle, respectively. The first spindle and the second spindle are positioned on the same axis and confronting each other, so that the first work and the second work are rotated about the same axis. A tool rest is provided with a first tool and a second tool and is moved for turning the first work by the first tool. The second spindle is moved in synchronism with the movement of the tool rest for turning the second work by the second tool.

Abstract: A facsimile signal transmitted from a transmission side facsimile device is received by a receiving side facsimile device and is converted into a document character pattern data. The character pattern data is supplied to a character recognizing section where it is subjected to a character recognition process. A character which can not be recognized by the character recognizing section is processed as it is intact, while the recognized character is converted into a standard character. A document containing the unrecognizable character is hard copied for reservation.