Time base conversion circuit

Details Time base conversion circuit Time base conversion circuit

1990-11-15

1992-10-06

Malzahn, David H.

Boots, shoes, and leggings

3647101, 358160, G06F 1531

Patent

active

051538458

ABSTRACT:
A time base conversion circuit including a data interpolating circuit for converting a digital signal of sampling frequency fs into a digital signal having M (M is a positive integer) samples per N/fs (N is another positive integer) cycle without loosing data during the interpolating process, a register for holding M data which are output from the data interpolating circuit at the cycle of N/fs, M memories for storing M data which are held by the register at the cycle of N/fs, and controller for controlling data write/read operations of the memories at the cycle of M/fs and a selecter for selecting M data read from the memories by the controller successivly at the cycle of 1/fs.

REFERENCES:
patent: 4435832 (1984-03-01), Adada et al.
patent: 4623922 (1986-11-01), Wischermann
patent: 4748578 (1988-05-01), Lagadec et al.
patent: 4862271 (1989-08-01), Smith et al.
patent: 5023825 (1991-06-01), Luthra et al.
patent: 5029006 (1991-07-01), Katsumata et al.
"Effets Speciaux: Chagement de Format d'une Image de Television" Toute L'Electronique No. 460, Jan. 1981, pp. 23-28.

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