Encoder apparatus

Details Encoder apparatus Encoder apparatus

1988-06-24

1992-02-25

MacDonald, Allen R.

Boots, shoes, and leggings

364736, 364746, 3647365, G06F 738

Patent

active

050918745

ABSTRACT:
A high-speed encoding apparatus retrieves the bit position of either one of the lowest order bit or the highest order bit having a first logical value. Such retrieving starts from a selected bit-position. The selected bit-position is defined by an input offset value Iofs4:Iofs0. The retrieved bit-position is the output of the encoder Oofs4:Oofs0. A zero detection circuit receives an n-bit data word, segments the n-bits into groups of predetermined length and for each group generates a zero detection when all bits in the group are zero. The zero detection circuit also masks the zero detections according to the high order bit states of the input offset value. A first encoder then generates the high order bits of the apparatus output offset in response to the masked and unmasked zero detections. A second encoder masks one or more of the groups according to the bit states of the input offset value, then generates encoded bit sets for each group. The high order bits of the output offset previously generated then are used to select which of the bit sets are used as the low order bits of the output offset.

REFERENCES:
patent: 3833888 (1974-09-01), Stafford et al.
patent: 4028684 (1977-06-01), Divine et al.
patent: 4035780 (1977-07-01), Kristick et al.
patent: 4037094 (1977-07-01), Vandierendonck
patent: 4064421 (1977-12-01), Gajski et al.
patent: 4335372 (1982-06-01), Aufderheide et al.
patent: 4348741 (1982-09-01), McAlister et al.
patent: 4396994 (1983-08-01), Kang et al.
patent: 4420806 (1983-12-01), Johnson, Jr. et al.
patent: 4583197 (1986-04-01), Chappell et al.
patent: 4631696 (1986-12-01), Sakamoto
patent: 4653019 (1987-03-01), Hodge et al.
patent: 4670858 (1987-06-01), Almy
patent: 4703419 (1987-10-01), Krause et al.
patent: 4760461 (1988-07-01), Sato
patent: 4760517 (1988-07-01), Miller et al.
patent: 4761732 (1988-08-01), Eldumiati et al.
patent: 4773033 (1988-09-01), Ikumi
patent: 4785393 (1988-11-01), Chu et al.
patent: 4785421 (1988-11-01), Takahashi et al.
patent: 4789956 (1988-12-01), Hildebrandt
patent: 4799154 (1989-01-01), Matthews et al.
patent: 4829460 (1989-05-01), Ito
patent: 4922446 (1990-05-01), Zurawski et al.
patent: 4924421 (1990-05-01), Seguchi
patent: 4954978 (1990-09-01), Terane et al.
patent: 4959811 (1990-09-01), Szczepanek
"Switching and Finite Automata Theory", pp. 124-127, A. Kohavi, Tata McGraw-Hill Publishing Company Ltd., New Delhi, India 1978.

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