Receiving device and television receiver

Patent 7224953 Issued on May 29, 2007. Estimated Expiration Date:

July 25, 2023. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventor

Hosoi, Masayuki

Assignee

Sony Corporation

Application

No. 10522275 filed on 07/25/2003

US Classes:

455/301, Plural or compartmented shielding structure455/300, By shielding455/575.1, Housing or support455/106, Modulation by absorption, shielding, or reflecting178/18.08, Having shield455/269, With wave collector (e.g., antenna)455/76, Synthesizer361/818, EMI343/702, With radio cabinet348/725, RECEIVER CIRCUITRY369/47.54, By program or address signal455/88Transceiver controlling a separate transceiver or receiver

Examiners

Primary: Maung, Nay
Assistant: Chan, Richard

Attorney, Agent or Firm

Foreign Patent References

11-163755 JP 06/01/1999
2000-294950 JP 10/01/2000
2001-345765 JP 12/01/2001

International Class

H04B 1/10

Abstract

A receiving device in which the shielding performance is improved to solve a pulling problem in a receiving device of a direct conversion system is provided.The receiving device includes: a substrate on which an amplifier 30 that amplifies high frequency input signals, a filter 34 that passes only intended signals and removes unintended signals by tuning the amplified high frequency input signals and a direct conversion unit 36 that converts and detects directly the high frequency input signal from the filter; a first high-frequency shielding portion 90 fixed to a substrate 20 and which stands at the boundary between the filter and the other units for preventing radiation of the high frequency electro-magnetic wave that is induced from the filter to the space; and a second high-frequency shielding portion 60 provided facing and close to the filter surrounded by the first high-frequency shielding portion 90 and which prevents radiation of high frequency electro-magnetic waves induced from the filter to the space, together with the first high-frequency shielding portion 90.

Other References

Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 107173/1988 (Laid-open No. 28124/1990) (Sanyo Electric Co., Ltd.), Feb. 23, 1990.