Table 3 shows synchronization error time per 1 pixel measurement error for the measurement parameters (t, v, W, e in Table 2). The error of 1 pixel affects the time in proportion to the distance. We ventured not to correct the distortion to examine the affection of the distortion in this measurement including in Figure 9. The used lens had the distortion of barrel type. In the case of d = 2.25 (m), when there was the time marker captured near the left edge of the mobile device screen, we confirmed that mobile time was about 0.1 seconds slow from TV time by the combined affection of (a) and (b). Conversely, when there was it near the right edge, mobile time was going about 0.1 seconds from TV time.