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EP0408066A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Television tuner

Assignee: Panasonic Holdings Corp
•
Filing: 1990-07-13
•
Granted: —
•
Expires: 2010-07-13
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Abstract

Abstract The present invention relates to a television tuner capable of receiving television broadcasting, CATV and satellite broadcasting. The television tuner includes a double superheterodyne tuner for receiving television signals, having an up-converter (40), a down-converter (42) and a coupler (41) for coupling the up-converter and down-converter, and the television tuner also includes a BS second mixer portion (40) and a FM demodulator (43), for receiving signals from a broadcasting satellite. The double superheterodyne tuner, the BS second mixer portion and the FM demodulator are disposed in a housing (74), a combination of the up-­converter and the BS second mixer portion is desiredly separated from the down-converter, the coupler is disposed in a space between the combination and the down-converter, and the FM demodulator is disposed in the remaining space of the housing.

Inventors

  • 👤 Kazuhiko Kubo
  • 👤 Akira Usui
  • 👤 Akira Mishima

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-31 09:20
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/24; H03J5/242; H03D; H03D7/00; H03D7/16; H03D7/161

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 119 words
A television tuner, including a double super-­heterodyne tuner means for receiving television signals, having an up-converter (40), a down-converter (42) and a coupling means (41) for coupling said up-converter and down-converter, said television tuner also including a BS second mixer portion (40) and a FM demodulator (43), for receiving signals from a broadcasting satellite, wherein, said double superheterodyne tuner means, said BS second mixer portion and said FM demodulator are disposed in a housing (74), a combination of said up-­converter and said BS second mixer portion is desiredly separated from said down-converter, said coupling means is disposed in a space between said combination and said down-converter, and said FM demodulator is disposed in the remaining space of said housing.
Claim 2
Dependent Claim 119 words
A television tuner, including a double super-­heterodyne tuner means for receiving television signals, having an up-converter (40), a down-converter (42) and a coupling means (41) for coupling said up-converter and down-converter, said television tuner also including a BS second mixer portion (40) and a FM demodulator (43), for receiving signals from a broadcasting satellite, wherein, said double superheterodyne tuner means, said BS second mixer portion and said FM demodulator are disposed in a housing (74), a combination of said up-­converter and said BS second mixer portion is desiredly separated from said down-converter, said coupling means is disposed in a space between said combination and said down-converter, and said FM demodulator is disposed in the remaining space of said housing.
Claim 3
Dependent Claim 28 words
A television tuner as defined in claim 1, wherein said coupling means comprises a band pass filter for a first intermediate frequency signal and a low pass filter.
Claim 4
Dependent Claim 26 words
A television tuner as defined in claim 1, wherein said coupling means comprises a band pass filter for a first intermediate frequency and a strip line.
Claim 5
Dependent Claim 21 words
A television tuner as defined in claim 1, wherein said coupling means comprises a low pass filter and a strip line.

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