Invention Grant
- Patent Title: Host computer, computer terminal, and card access method
- Patent Title (中): 主机,计算机终端和卡访问方式
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Application No.: US12823632Application Date: 2010-06-25
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Publication No.: US08214563B2Publication Date: 2012-07-03
- Inventor: Masayoshi Murayama
- Applicant: Masayoshi Murayama
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Blakely, Sokoloff, Taylor & Zafman LLP
- Priority: JP2009-156010 20090630
- Main IPC: G06F3/00
- IPC: G06F3/00

Abstract:
According to one embodiment, the host controller includes a transmission circuit that encodes transmission data, according to a serial transfer format, a reception circuit that decodes received data, according to the serial transfer format, a variable frequency clock generator that generates a card clock and a transfer clock, a card clock output unit that outputs the card clock to the memory card, an interface unit includes a transmission interface that transfers the transmission data from the transmission circuit to the memory card in synchronization with the transfer clock, and a reception interface that transfers received data from the memory card to the reception circuit in synchronization with the transfer clock, and a setting register circuit that holds setting information concerning an input/output method of the memory card, and controls frequency of the transfer clock generated by the variable frequency clock generator, based on the setting information.
Public/Granted literature
- US20100332701A1 HOST COMPUTER, COMPUTER TERMINAL, AND CARD ACCESS METHOD Public/Granted day:2010-12-30
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