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US 2003/0112381 A1Published application
Television tuner unit with reduced area for mounting on mother board
AssigneeAlps Electric Co., Ltd.
InventorMasaki Yamamoto
Life of this patent
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Abstract
A metal frame is provided with plural terminals that are respectively connected to a tuner, a video intermediate frequency circuit part, and a stereo demodulator. The frame is preferably divided bilaterally into two regions, with the tuner in a first region and the video intermediate frequency circuit part and the stereo demodulator in a second region. The various components are preferably connected in series, with a U-shaped geometrical layout on the metal frame.
Claims19
A television tuner unit comprising:
- a tuner for frequency-converting a received television signal into an intermediate frequency signal;
- a video intermediate frequency circuit part-for detecting the intermediate frequency signal and outputting a video signal and a sound signal;
- a stereo demodulator for demodulating a composite signal outputted from the video intermediate frequency circuit part and outputting a stereo sound signal;
- and
- a metal frame having four sides, including a first side, a second side, and a third side, the metal frame storing the tuner, the video intermediate frequency circuit part, and the stereo demodulator therein,
- a plurality of terminals on the first side of the metal frame, connected to the tuner, the video intermediate frequency circuit part, and the stereo demodulator,
- wherein the tuner is disposed in a first partitioned region proximate to the second side of the metal frame;
- and
- wherein the stereo demodulator and the video intermediate frequency circuit part are disposed in a second partitioned region proximate to the first side of the metal frame;
- wherein the first and second partitioned regions divide the inside of the metal frame.
7 more elements
A tuner unit comprising:
- a mounting board;
- a tuner circuit mounted on the mounting board, configured to receive an input signal, and configured to generate an intermediate-frequency signal in response to the input signal;
- an intermediate-frequency circuit mounted on the mounting board, coupled to the tuner circuit, and configured to generate a first signal in response to the intermediate-frequency signal;
- and
- a demodulator circuit mounted on the mounting board, mounted adjacent both to the tuner circuit and to the intermediate-frequency circuit, coupled to the intermediate-frequency circuit, and configured to demodulate the first signal.
2 more elements
A television tuner circuit comprising:
- a circuit board;
- and
- a plurality of components mounted on the circuit board;
- wherein the plurality of components includes:
- a) a tuner circuit,
- b) a video intermediate-frequency circuit, and
- c) a demodulator circuit;
- wherein the components in the plurality of components are electronically coupled in series, thereby forming a primary signal path through the components in the plurality of components;
- wherein the components in the plurality of components are mechanically mounted so that the primary signal path follows a substantially U-shaped path.
6 more elements
Dependencies are inferred from the claim text.