Arrangement for doubling the field frequency of a picture signal

Details Arrangement for doubling the field frequency of a picture signal Arrangement for doubling the field frequency of a picture signal

1993-10-28

1995-11-21

Groody, James J.

Television

Format conversion

Field rate type flicker compensating

348910, 348443, H04N 701

Patent

active

054692172

ABSTRACT:
In an arrangement for converting an original picture signal representing a sequence of frames, each of which is composed of two interlaced fields, into a converted picture signal which has a double field frequency with respect to the original picture signal, is for doubling the field frequency, for the purpose of noise reduction, motion compensation and line flicker reduction, a memory arrangement (1, 2) provided for doubling the field frequency, which memory arrangement precedes a motion compensation arrangement (5) whose output signal is applied to a noise reduction arrangement (6), and a line flicker reduction arrangement (7) is provided which receives the output signals from the noise reduction arrangement (6) and the motion compensation arrangement (5), while the converted picture signal is obtained from the output signal of the noise reduction arrangement (6), the line flicker reduction arrangement (7) or the motion compensation arrangement (5), dependent on the position with respect to time of a field to be generated of the converted picture signal.

REFERENCES:
patent: 4603351 (1986-07-01), Vreeswijk et al.
patent: 4701793 (1987-10-01), den Hollander et al.
patent: 4996595 (1991-02-01), Naito et al.
A. Ibenthal et al., "Motion compensated 100 Hz Conversion", Philips Components, Internal Laboratory Report.

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