Title:
SIGNAL PROCESSOR FOR RE-TRANSMISSION IN COMMON VIEWING SYSTEM
Document Type and Number:
Japanese Patent JP2632270
Kind Code:
B2
Abstract:
PURPOSE: To obtain the input output variable system in the common viewing system in which a same channel beat fault at a system terminal equipment is prevented by making input output frequencies of the device coincident with each other easily, inexpensively and completely at the setting of the same input and output channels for frequency conversion.
CONSTITUTION: An inputted television broadcast signal is mixed with a 1st local oscillation signal, the result is separated into a video 1st intermediate frequency signal and an audio 1st intermediate frequency signal by a separator 11, they are amplified and adjusted respectively and then synthesized by a synthesizer 14. The synthesized signal is mixed with a 2nd local oscillation signal and a PLL local oscillation section X2, generates a 3rd local oscillation signal by using a sum of the 1st local oscillation signal and the 2nd local oscillation signal as a reference signal and the mixed signal is mixed with the 3rd local oscillation signal and the result is outputted from an output terminal 21 as an output signal.
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Inventors:
SHIRAYANAGI YOSHIKAZU
Application Number:
JP2195192A
Publication Date:
July 23, 1997
Filing Date:
January 10, 1992
Export Citation:
Assignee:
DEIETSUKUSU ANTENA KK
International Classes:
H03D7/00; H04B3/36; H04N7/10; H04N7/16; H04N21/61; H04N21/647; (IPC1-7): H04N7/10; H03D7/00; H04B3/36; H04N7/16
Domestic Patent References:
| JP5448118A | ||||
| JP6053377A | ||||
| JP319472A | ||||
| JP59101575U |
Attorney, Agent or Firm:
Hiroshi Tanaka (2 outside)
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