802.11® Wireless Networks: The Definitive Guide
By Matthew Gast

Publisher : O'Reilly Pub Date : April 2002 ISBN: 0-596-00183-5 Pages : 464

http://paginas.fe.up.pt/~ee05005/tese/arquivos/ieee80211.pdf

test

nc 192.168.10.216 5333 -u -z
nc -lk 4000


root@OpenWrt:~# mount
rootfs on / type rootfs (rw)
/dev/root on /rom type squashfs (ro,relatime)
proc on /proc type proc (rw,noatime)
sysfs on /sys type sysfs (rw,noatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,noatime)
/dev/mtdblock3 on /overlay type jffs2 (rw,noatime)
overlayfs:/overlay on / type overlayfs (rw,noatime,lowerdir=/,upperdir=/overlay)
tmpfs on /dev type tmpfs (rw,relatime,size=512k,mode=755)
devpts on /dev/pts type devpts (rw,relatime,mode=600)
debugfs on /sys/kernel/debug type debugfs (rw,noatime)
tmpfs on /dev/shm type tmpfs (rw,relatime)
/dev/sda1 on /www/record type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
root@OpenWrt:~#

mount -t jffs2 /dev/mtdblock3 /overlay
mount -t overlayfs overlayfs:/overlay / -oupperdir=/overlay,lowerdir=/,rw,noatime

overlayfs:/overlay on / type overlayfs (rw,noatime,lowerdir=/,upperdir=/overlay)
overlayfs:/overlay on / type overlayfs (rw,noatime,lowerdir=/,upperdir=/overlay)

Radius Distortion Correction

1. Radius Distortion Correction
1. rd=ru+krr3u
2. Distortion (optics)
1. ImageMagick
1. convert distorted_image.jpg -distort barrel "0.06335 -0.18432 -0.13009" corrected_image.jpg
2. convert -size 1280x720 a.jpg -distort barrel "0.06830 -0.22 -0.12009 1.4" b.jpg
3.  convert -size 1280x720 a.jpg -distort barrel "0.07830 -0.20 -0.12009 1.4" b.jpg
2. convert c.jpg -distort barrel "0.078 -0.24 -0.109 1.56" d.jpg
3. 
   

http://www.tophatstuff.co.uk/index.html@p=116.html

YoCam 的設計很近似 HTC 的 Re

2016 ICCE-TW

Multimedia Signal Processing

 Digital Imaging and Camera Technology

2-Page Full Paper Due Date: Jan 15, 2016
Notification of Acceptance: Feb. 19, 2016
2-Page Final Paper: Mar. 31, 2016
Deadline for Online Registration: Mar. 31, 2016

http://www.cool3c.com/article/99510

BELASIGNA R281: Always-Listening, Voice Trigger Audio DSP System

BELASIGNA R281: Always-Listening, Voice Trigger Audio DSP System

1. 2014 MT6582/M MT6290
2. 2014 MT6732
3. 2015 MT6735
4. 2015 MT6735M 
1. MediaTek MT6735M 同樣是 ARM Cortex-A53 四核心架構，不同的是其 處理器時脈下調至 1GHz 外，同時在螢幕解析度 也調整至 qHD（960 x 540），同時鏡頭也降為 8MP，不過 1080p 影像播放編碼則是保留了下來。MediaTek MT6735（M）都支援 CDMA200 1x / EVDO Rev.A / HSPA＋（42/11）以及 LTE Cat4，凸顯該公司為滿足中國手機品牌對全模網路的需求。
5. 
   

1. 2015 年第二季登場，64 位元 MEDIATEK MT6735（M）全模 SOC 確認

CountryTraceRoute network test

CountryTraceRoute

xen 32 cpu

xe vm-param-set platform:cores-per-socket=32 VCPUs-max=40 VCPUs-at-startup=32 uuid=14165c41-0a6e-0f7e-766e-78b1cd95f623

How to corss compile cdrecord for ARM?

http://bylnote.blogspot.tw/2011/08/how-to-corss-compile-cdrecord-for-arm.html

How to corss compile cdrecord for ARM?

Here are the steps to cross compile cdrecord version 3.00:

(1) Modify RULES/cc-gcc.rul:

  - replace gcc to arm-none-linux-gnueabi-gcc, g++ to arm-none-linux-gnueabi-g++

  - if you want to build statically link program, add -static to LDFLAGS.

(2) Compile by using "CCOM=gcc ARCH=armv5teb OSNAME=linux make":

  - This will use RULES/armv5teb-linux-gcc.rul to build the program.

(3) Modify libschily/findbytes.c because SIZE_LONG is not defined:

  - Defined SIZE_LONG == 4 or just keep magic_mask = 0x7EFEFEFFL(Comment out others part)

(4) Check if automatically generate file incs/armv5teb-linux-gcc/align.h exist.

  - align.h is not exist if use gcc but exist if use cc. I don't know why.

β相偏硼酸钡晶体(β-BaB2O4) BBO（β相偏硼酸钡晶体，β-BaB2O4）

 RMB$450

Wollaston 

非線性晶體BBO及LBO中之紫外和頻

Quantum communication: Reliable teleportation

永原科學儀器

[狹義相對論][10/30][超距同時性的破滅(二)][09分00秒]