Data transfer processing apparatus, data transfer method,...

Details Data transfer processing apparatus, data transfer method,... Data transfer processing apparatus, data transfer method,...

2007-02-13

2007-02-13

Kizou, Hassan (Department: 2616)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S395400, C370S418000

Reexamination Certificate

active

10155495

ABSTRACT:
This invention is intended to realize with ease flow control and quantization error reduction in a data transfer operation executed via the IEEE 1394 serial bus. A FIFO once holds data supplied from a decoder and outputs the data in a predetermined send timing relation. At this moment, a counter counts the number of packets to sent from the FIFO to an IEEE 1394 bus. In order to increasing data transfer quantity in accordance with a send command issued by a register, a data packet is sent at transfer of an empty packet. In order to decrease data transfer quantity, an empty packet is sent in a timed relation in which a data packet is sent. A data quantity monitor requests the decoder for supplying data or stopping thereof via a data input controller so as to prevent the FIFO from overflowing or being emptied in accordance with flow control.

REFERENCES:
patent: 6295516 (2001-09-01), Takeyasu
patent: 6442208 (2002-08-01), Horiguchi et al.
patent: 6604154 (2003-08-01), Takegami et al.
patent: 7016303 (2006-03-01), Sakamoto et al.
patent: 7050446 (2006-05-01), Hata
patent: 2002/0009049 (2002-01-01), Nomura
patent: 2002/0105905 (2002-08-01), Boyle et al.

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