Title:
ビデオ処理装置において電圧制御水晶発振器を設定する方法と装置
Document Type and Number:
Japanese Patent JP2007528159
Kind Code:
A
Abstract:
The present invention concerns a method and apparatus for setting a frequency reference in an integrated receiver decoder (IRD). More specifically, the present invention discloses an electrical circuit arrangement in which the voltage controlled crystal oscillator (VCXO) is set to oscillate at the desired frequency prior to the initial use thereof and that frequency is stored in a non-volatile memory unit. Upon initial use, the IRD receives a data signal corresponding to a frequency reference. The IRD uses a threshold value to compare the frequency reference of the incoming data signal with the frequency stored in the non-volatile memory. If the frequencies differ by a predetermined value, the frequency from the incoming data signal is stored in the non-volatile memory and is used to set the VCXO.
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Inventors:
Sirilla, George and Andrew
Pitch, Robert Alan
Pitch, Robert Alan
Application Number:
JP2007501045A
Publication Date:
October 04, 2007
Filing Date:
February 25, 2005
Export Citation:
Assignee:
Thomson Licensing
International Classes:
H04N7/173; H03B5/32; H03L1/02; H04N7/62
Domestic Patent References:
| JP2000188614A | 2000-07-04 | |||
| JP2001077670A | 2001-03-23 | |||
| JP2004505500A | 2004-02-19 |
Attorney, Agent or Firm:
Riki Kikoshi
Kozo Aoyama
Kozo Aoyama