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1. Data rate of TV images1.1 ITU-R BT.601 standard data rate itu-r bt.601 standard. According to this standard, use 4:2:2 the sampling format, Brightness (Y): sample/row x525 Line/frame x30 frame/sec x10 bit /sample ≌ 13.5 megabits per second

  ========================================================== ====Author: yuanlulu Http://blog.csdn.net/yuanlulu No copyright, but please keep this statement for reprinting========================================================== ==== The customer

Setitimer () is a Linux API, not the standard library of C language. Setitimer () has two functions: one is to execute a function after a period of time, and the other is to execute a function for a period of time. The following program demo shows

    1. # include Void do_gettimeofday (struct timeval * TV){Unsigned long flags;Unsigned long USEC, SEC;Read_lock_irqsave (&

There are three main solutions: (1) Calling Alarm, which generates a sigalrm signal when the specified timeout period expires. This method involves signal processing, and there are differences in signal processing in different implementations, and

From erlang time functions to the time correction system, erlang correctionMany people will notice this problem. erlang provides two time functions, erlang: now () and OS: timestamp (). In the same usage, the current time is returned. The specific

1. Linux time1.1 Linux Time System1.2. Time-related data structure in Linux 2. Obtain the current time 3. latency 4. Timer4.1. Alarm4.2. setitimer 1Linux time1.1 Linux Time SystemUNIX and Linux time systems start from epoch (the beginning of the

1. Time Representation In the program, we often need to output the current time of the system, for example, the output result using the date command. At this time, we can use the following two functions: # Include Time_t time (time_t * tloc ); Char *

Problem Introduction: After we re-installed a computer, we found that the Apache Log suddenly added a lot of requests with long service time, such as the following two: **--4913229 11227 [29/MAR/2012: 09: 59: 58 + 0800] "Get ********-4793564 9846 [29

Nginx Time Management Gettimeofday () overheadIn Linux, Nginx uses gettimeofday () to obtain the current system time;Gettimeofday is a function provided by the C library (not called by the system). It encapsulates sys_gettimeofday system calls in