+ * See SMPTE ST 314M-2005 Sec 4.4.2.2.1 "Time code pack (TC)"
+ * the format description as follows:
+ * bits 0-5: hours, in BCD(6bits)
+ * bits 6: BGF1
+ * bits 7: BGF2 (NTSC) or FIELD (PAL)
+ * bits 8-14: minutes, in BCD(7bits)
+ * bits 15: BGF0 (NTSC) or BGF2 (PAL)
+ * bits 16-22: seconds, in BCD(7bits)
+ * bits 23: FIELD (NTSC) or BGF0 (PAL)
+ * bits 24-29: frames, in BCD(6bits)
+ * bits 30: drop frame flag (0: non drop, 1: drop)
+ * bits 31: color frame flag (0: unsync mode, 1: sync mode)
+ * @note BCD numbers (6 or 7 bits): 4 or 5 lower bits for units, 2 higher bits for tens.