Invention Grant
- Patent Title: Random number generating method and random number generating apparatus
- Patent Title (中): 随机数生成方法和随机数生成装置
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Application No.: US13013770Application Date: 2011-01-25
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Publication No.: US08782108B2Publication Date: 2014-07-15
- Inventor: Hisashi Ishikawa
- Applicant: Hisashi Ishikawa
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2004-174607 20040611
- Main IPC: G06F1/02
- IPC: G06F1/02
Abstract:
A mask circuit (2) masks a bit sequence of K bits by a predetermined bit pattern. An EXOR circuit (3) EXORs the masked bit sequence. An inverter (9) controls inversion/non-inversion of values of bits of a bit sequence which includes a bit value indicating the EXOR result in a result obtained by shifting the bit sequence of K bits held in a shift register (1), in accordance with a designated bit value in a pattern table (14). A bit sequence as the control result is output as a random number expressed by K bits.
Public/Granted literature
- US20110119321A1 RANDOM NUMBER GENERATING METHOD AND RANDOM NUMBER GENERATING APPARATUS Public/Granted day:2011-05-19
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