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I don't call college so this is largely academic, but can someone explain why the backboard clock/light supersedes the game clock in this situation? I've read the rule posted by tjones and it only says that the LED lights will be used only if the game clock isn't visible. In this case the game clock(s) were visible but disagreed.
I guess the question is, does the first-stated rule - that the red backboard light ends the period - take precedence over the subsection (b) rule? |
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In order -- game clock (not the "superimposed clock on the ESPN screen"), red lights, horn. |
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I think that the only thing you can read into this is that the upper arena display is slow to update. Not really that surprising. Nothing is instant....just some things are faster than others. The fancier the display, the more likely it will be the slower device.
LED lights are fast....far faster even than simple incandescent lights....probably the quickest response time of any of the displays. Turning on a single light is faster than configuring digits on a fancy display. Turning on the segments in a 7-segment display (the over the board clock) is faster than turning driving a fancy display.
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Thanks Bob. In this particular case, then, the game clock is the one over the backboard and not the one in the arena in the background (as opposed to the ESPN clock)?
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Correct.
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The one in the above shot is not the ESPN clock...it may or may not also be a game clock. The ESPN clock is a virtual representation of the actual clock. It is not tied into the clock console. They often have a nice looking graphic clock that is a recreation of the real clock but is not guaranteed to be the accurate. It is controlled separately and only approximates the game clock. When it comes down to close situation, they usually switch to an inset view of the actual game clock, not a recreation as that is the only one that matters. If there is more than one display of the game clock in the arena and they don't agree, I would suggest that the one with the lowest time is probably the most accurate. The one showing 0.2 in the freeze frame is just delayed in showing the current time. When stopped at any earlier point, it would have settled at the same time as the other one after a 0.2 second delay and would start a moment after when resumed.
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Owner/Developer of RefTown.com Commissioner, Portland Basketball Officials Association |
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Most new scoreboards are operated via wireless signal, although some do have a hard wire either for backup or because the particular arena has experienced interferences on their wireless. I'm going to offer that in this case the clock on top of basket is receiving a wireless signal, while the main arena scoreboard is connected via hard cable like a standard co-ax or cat-5. If this were the case it can actually take longer for the signal to reach that distance, which MAY explain the very momentary delay of .02
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It's .2, not .02. And, yes, it makes a difference.
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The difference is more likely in the processing module that converts the control signals into the signals to turn on/off the relevant lighting elements on the board and the time it takes for the board/display to switch them on/off....known as lag time....the time from when the input signal arrives at the display to when the display reflects the input. And this is not the same as response time. Typical lag times for LCD monitors, for example, range from something like 20ms (0.02 sec) up to around 200ms (0.2 sec) and LCD monitors are compact, high volume products where the cost of developing a fast system is amortized across the millions of units. I would not be surprised if the large, fancy arena monitors had lag times greater than that of LCD monitors. The 0.2 sec lag difference as shown in the above snapshot would not be unreasonable.
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Owner/Developer of RefTown.com Commissioner, Portland Basketball Officials Association Last edited by Camron Rust; Wed Jan 04, 2012 at 07:54pm. |
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Half Full, Half Empty ???
Only one gym, of the seventy high schools that we service, has the lights. I was there last week, and the lights behind only one backboard worked. The lights down the other side were broken.
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