Digital broadcast receiver apparatus

• US 20060018286A1
• Filed: 03/15/2004
• Published: 01/26/2006
• Est. Priority Date: 03/17/2003
• Status: Active Grant

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Ozeki, Hiroaki, Kageyama, Sadashi, Yasuho, Takeo, Kato, Hisaya
• Granted Patent: US 7,486,940 B2
• Time in Patent Office: Days
• US Class Current: 370/334
• CPC Class Codes: H04B 7/0802 using antenna selection H04B7/0868 takes precedence; antenna beam directivity switching H01Q3/24
• CPC Class Codes: H04B 7/0814 based on current reception conditions, e.g. switching to different antenna when signal level is below threshold
• CPC Class Codes: H04B 7/10 Polarisation diversity; Directional diversity
• CPC Class Codes: H04H 20/28 Arrangements for simultaneous broadcast of plural pieces of information
• CPC Class Codes: H04H 40/18 Arrangements characterised by circuits or components specially adapted for receiving
• CPC Class Codes: H04H 60/11 Arrangements for counter-measures when a portion of broadcast information is unavailable

Abstract

A digital broadcast receiving apparatus, which has a receiving circuit for receiving a transmitted high frequency signal of a plurality of time division multiplexed programs, includes a circuit for selecting a better receiving characteristic condition while a desired program is not received.

Claims

1. A digital broadcasting receiving apparatus, having a receiving circuit for receiving a transmitted high frequency signal of a plurality of time division multiplexed programs, comprising an operation starting point controlling circuit that varies a operation starting point of a variable gain circuit establishing a better receiving characteristic condition while a desired program is not received.

2. The digital broadcasting receiving apparatus according to claim 1, wherein the circuit for selecting a better receiving characteristic condition is a parameter switch timing generating circuit.

3. The digital broadcasting receiving apparatus according to claim 2, wherein the parameter switch timing generating circuit is arranged to switch over antenna characteristics.

4. The digital broadcasting receiving apparatus according to claim 3, wherein the antenna characteristic comprises two different polarized wave surface antennas, which are arranged to be switched each other.

5. (canceled)

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8. (canceled)