【発明の名称】FM変調信号復調装置 - Konin Krekka Philips Electronics NV

Title:

【発明の名称】FM変調信号復調装置

Document Type and Number:

Japanese Patent JP3031760

Kind Code:

B2

Abstract:

In order to reduce the disturbances caused by the head switch in a videotape recorder, in an arrangement for demodulating an FM modulated signal, a fixed value in the hold circuit (12) which circuit is used for maintaining the fixed value for the signal during the head switch, is selected such that it is situated at a value the interpolated signal would have had during the head switch time interval (T1) at an instant situated between 0.3 T1 and 0.8 T1 in the head switch interval. This may be realized by an extension with a delay unit which realizes a delay Tv for which holds: 0.3 T1 < Tv < 0.8 T1.

More Like This:

JPS62202695	METHOD OF RECORDING AND/OR REPRODUCING VIDEO SIGNAL, APPARATUS FOR THE METHOD AND MAGNETIC RECORDING CARRIER OBTAINED BY THE METHOD
JPS61123005	HEAD SWITCHING DEVICE

Inventors:

Josephus Adrianus Peinenburg
Willem Hadde Nolder Mer
Herrit Jan Float Fruce

Application Number:

JP23184491A

Publication Date:

April 10, 2000

Filing Date:

September 11, 1991

Export Citation:

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Assignee:

Konin Krekka Philips Electronics NV

International Classes:

G11B15/14; G11B20/02; G11B20/06; H03D3/00; H03G3/34; H04N5/92; H04N5/922; H04N5/94; H04N9/802; (IPC1-7): G11B20/06; H04N5/93

Domestic Patent References:

JP59193510A
JP59186102A

Attorney, Agent or Firm:

Akihide Sugimura (2 outside)

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