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1. CN109558083 - A method for preventing codes from being rewritten and a memory

Office China
Application Number 201811425047.7
Application Date 27.11.2018
Publication Number 109558083
Publication Date 02.04.2019
Publication Kind A
IPC
G06F 3/06
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
06Digital input from, or digital output to, record carriers
CPC
G06F 3/0622
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
06Digital input from or digital output to record carriers, ; e.g. RAID, emulated record carriers, networked record carriers
0601Dedicated interfaces to storage systems
0602specifically adapted to achieve a particular effect
062Securing storage systems
0622in relation to access
G06F 3/0679
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
06Digital input from or digital output to record carriers, ; e.g. RAID, emulated record carriers, networked record carriers
0601Dedicated interfaces to storage systems
0668adopting a particular infrastructure
0671In-line storage system
0673Single storage device
0679Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
Applicants HKC CO., LTD.
惠科股份有限公司
Inventors HE HUAILIANG
何怀亮
Agents 广州华进联合专利商标代理有限公司 44224
Title
(EN) A method for preventing codes from being rewritten and a memory
(ZH) 防止代码被改写的方法及存储器
Abstract
(EN)
The invention provides a method for preventing codes from being rewritten. The method comprises the following steps: detecting a read-write operation type of a current control signal sent by a time sequence controller through a first control unit; and if the current control signal is a write operation signal, the first control unit sends the current control signal to the latch, and judging whetherthe sum check code of the current control signal in the latch is the same as a preset sum check code or not through the second control unit. And if the sum check code of the current control signal isthe same as the preset sum check code, the second control unit controls the latch to send the current control signal to the register so as to perform write operation. The invention also provides a memory. The risk that the original code in the memory is rewritten is greatly reduced, so that the production yield is improved, and the product reliability is improved.

(ZH)
本申请提供了一种防止代码被改写的方法,通过所述第一控制单元检测时序控制器发送的当前控制信号的读写操作类型。若所述当前控制信号为写操作信号,则所述第一控制单元将所述当前控制信号发送至所述锁存器。通过所述第二控制单元判断所述锁存器内的所述当前控制信号的总和检验码是否与预设总和检验码相同。若所述当前控制信号的总和检验码与所述预设总和检验码相同,则所述第二控制单元控制所述锁存器将所述当前控制信号发送至所述寄存器,从而进行写操作。本申请还提供了一种存储器。本申请大大降低了所述存储器内原始代码被改写的风险,进而提高生产良率,增加产品可靠性。

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