Mobile terminal apparatus and broadcast receiving method

• US 20070042723A1
• Filed: 04/04/2006
• Published: 02/22/2007
• Est. Priority Date: 04/06/2005
• Status: Abandoned Application

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Masumura, Hitoshi, Suda, Toru, Kasashima, Yasuyuki
• Application Number:
  US11/397,224
• Publication Number:
  US 20070042723A1
• Time in Patent Office: Days
• US Class Current: 455/77
• CPC Class Codes: H04B 1/109 by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input
• CPC Class Codes: H04B 1/525 with means for reducing leakage of transmitter signal into the receiver
• CPC Class Codes: H04B 15/00 Suppression or limitation of noise or interference by means associated with receiver H04B1/10

Abstract

A mobile terminal apparatus is disclosed which includes: a tuner device configured to perform frequency conversion upon selecting a signal on a desired channel from a receiver signal derived from a received broadcast signal; a communication device configured to conduct wireless communications; and a control device configured to control the tuner device and the communication device in operation; wherein the tuner device has an input stage including a signal path on which the receiver signal is amplified before being forwarded downstream, and a signal path on which the receiver signal is not amplified when forwarded downstream; and wherein the control device selects one of the signal paths in the input stage depending on communication status of the communication device.

Claims

1. A mobile terminal apparatus comprising:

a tuner device configured to perform frequency conversion upon selecting a signal on a desired channel from a receiver signal derived from a received broadcast signal;

a communication device configured to conduct wireless communications; and

a control device configured to control said tuner device and said communication device in operation;

wherein said tuner device has an input stage including a signal path on which said receiver signal is amplified before being forwarded downstream, and a signal path on which said receiver signal is not amplified when forwarded downstream; and

wherein said control device selects one of the signal paths in said input stage depending on communication status of said communication device.

2. The mobile terminal apparatus according to claim 1, wherein the signal path on which said receiver signal is not amplified when forwarded downstream is constituted by a feedback circuit of an amplifier device attached to the signal path on which said receiver signal is amplified before being forwarded downstream.

3. The mobile terminal apparatus according to claim 1, wherein, if said communication device is transmitting a wireless signal or if a wireless signal received by said communication device has a signal level higher than a predetermined threshold, then said control device selects in said input stage the signal path on which said receiver signal is not amplified when forwarded downstream.

4. A broadcast receiving method comprising the steps of:

determining communication status of wireless communications;

depending on the communication status thus determined, selecting either a signal path on which a receiver signal derived from a received broadcast signal is amplified or a signal path on which said receiver signal is not amplified; and

performing frequency conversion upon selecting a signal on a desired channel from said receiver signal supplied over the selected signal path.