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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Why does a keyboard need to go to sleep.
Online I see for sale a wireless keyboard/mouse, and it says about it
"Auto Sleep And Wake Feature This keyboard also features an auto sleep and auto wake mode. If there is a long period of inactivity, the keyboard will automatically go into a sleep mode. To exit sleep mode, press any key." Why does it have any need to go to sleep. Why would it use any power if no one is pressing a key? This is not a cordless phone that waits for phone calls, whose battery drains even when not in use. (For that matter. why don't cordless phones have on/off switches. They can go without charging for about 2 days. If you could rely on the ringer in the other room and turn the cordless phone OFF, they wouldnt' need a charge for 10 days or more. ) This is the item. Before you buy it, there's a newer version now. http://www.amazon.com/FAVI-FE01-BL-W...wifi+keyboards Thanks. |
#2
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Why does a keyboard need to go to sleep.
On 8/14/2015 6:30 PM, micky wrote:
Online I see for sale a wireless keyboard/mouse, and it says about it "Auto Sleep And Wake Feature This keyboard also features an auto sleep and auto wake mode. If there is a long period of inactivity, the keyboard will automatically go into a sleep mode. To exit sleep mode, press any key." Why does it have any need to go to sleep. Why would it use any power if no one is pressing a key? Sleep IS not using "much" power. The only difference is that the first keystroke may take a fraction of a second to switch the clock and get everything running again. Don't worry about it. It's doing what you want. This is not a cordless phone that waits for phone calls, whose battery drains even when not in use. (For that matter. why don't cordless phones have on/off switches. They can go without charging for about 2 days. If you could rely on the ringer in the other room and turn the cordless phone OFF, they wouldnt' need a charge for 10 days or more. ) My cordless phones do go 10 days or more. I have two phones and one charger. I just swap them every couple of weeks. This is the item. Before you buy it, there's a newer version now. http://www.amazon.com/FAVI-FE01-BL-W...wifi+keyboards Thanks. |
#3
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Why does a keyboard need to go to sleep.
In sci.electronics.repair, on Fri, 14 Aug 2015 20:05:49 -0700, mike
wrote: On 8/14/2015 6:30 PM, micky wrote: Online I see for sale a wireless keyboard/mouse, and it says about it "Auto Sleep And Wake Feature This keyboard also features an auto sleep and auto wake mode. If there is a long period of inactivity, the keyboard will automatically go into a sleep mode. To exit sleep mode, press any key." Why does it have any need to go to sleep. Why would it use any power if no one is pressing a key? Sleep IS not using "much" power. So since the keyboard isn't using much power except when someone is pushing a button, it's always asleep the rest of the time, is that right? The only difference is that the first keystroke may take a fraction of a second to switch the clock and get everything running again. A remote control needs a clock? Don't worry about it. It's doing what you want. What are you, a 1950's doctor? This is not a cordless phone that waits for phone calls, whose battery drains even when not in use. (For that matter. why don't cordless phones have on/off switches. They can go without charging for about 2 days. If you could rely on the ringer in the other room and turn the cordless phone OFF, they wouldnt' need a charge for 10 days or more. ) My cordless phones do go 10 days or more. I have two phones and one charger. I just swap them every couple of weeks. Do they have on-off switches. If they go two weeks without one, they'd 10 weeks with one. This is the item. Before you buy it, there's a newer version now. http://www.amazon.com/FAVI-FE01-BL-W...wifi+keyboards Thanks. |
#4
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Why does a keyboard need to go to sleep.
On Sat, 15 Aug 2015 07:08:59 -0400, micky wrote:
A remote control needs a clock? This device is more complex than a remote control. It sends keystrokes to the computer but also receives data. When you connect the device, the computer will send configuration data such as data rate, auto-repeat time, state LEDS, mouse speed, acceleration etc. When you press for example CapsLock, the keyboard sends the caps command to the computer, then receives the request to toggle the CapsLock LED. All that activity needs the RF section to be powered and active, so it makes sense to provide a sleep mode that paces down this activity. Cheers! |
#5
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Why does a keyboard need to go to sleep.
In article , NONONOmisc07
@bigfoot.com says... The only difference is that the first keystroke may take a fraction of a second to switch the clock and get everything running again. A remote control needs a clock? I don't think he means a clock as in telling the time. It's clock in a more general form of a timing signal to run the processor. -- If there is a no_junk in my address, please REMOVE it before replying! All junk mail senders will be prosecuted to the fullest extent of the law!! http://home.comcast.net/~andyross |
#6
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Why does a keyboard need to go to sleep.
In sci.electronics.repair, on 15 Aug 2015 11:51:58 GMT, c4urs11
wrote: On Sat, 15 Aug 2015 07:08:59 -0400, micky wrote: A remote control needs a clock? This device is more complex than a remote control. It sends keystrokes to the computer but also receives data. When you connect the device, the computer will send configuration data such as data rate, auto-repeat time, state LEDS, mouse speed, acceleration etc. When you press for example CapsLock, the keyboard sends the caps command to the computer, then receives the request to toggle the CapsLock LED. All that activity needs the RF section to be powered and active, so it makes sense to provide a sleep mode that paces down this activity. Cheers! Thanks. And thanks everyone for their help |
#7
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Why does a keyboard need to go to sleep.
It scans, as in sequential pulses tto the switches. they don't really change states much unless a key is pressed but insid the processor thigs are chaging states. That means capacitanc is loading it down, even though there is no resistive load. Stop that process and it cools down and pulls less power.
The world is getting into "green" and using/wasting less energy. they are of the mond that if a million people save a milliwatt we have collectively saved a kilowatt. Engieers, seriously, sit there and figure out how to save that milliwatt. it is partly PR and partly the governments. I hear the almost made it illegal to sell plasma TVs in the EU because they are so damn power hungry. AND GUESS WHY. Remember about the scanning pulses and the capacitance ? Well plasma TVs are all about scanning and capacitance. I mean that is ALL they are about and in spades. A couple hundred volts at high speed applied to highly capacitive loads. It literally pulls as much juice as a old deflection yoke and high voltage circuit would. and another ting when it comes to a keyboard, look on the bottom and see iff maybe it has a battery compartment. Seriously, some of them, even high end ones, some have a place where you can stick like eight or ten "D" cells. Do you know what good alkaline "D" cells cost ? And even in the absece of that, most of them run off DC so they know it might be run off of batteries someday. that makes it a feature, actually for the customer. It is not so much that you are going to save 0.0003 cents on your electric bill next month, it might be that $15 you save on batteries next month. |
#8
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Why does a keyboard need to go to sleep.
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#9
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Why does a keyboard need to go to sleep.
On 08/14/2015 6:30 PM, micky wrote:
Online I see for sale a wireless keyboard/mouse, and it says about it "Auto Sleep And Wake Feature This keyboard also features an auto sleep and auto wake mode. If there is a long period of inactivity, the keyboard will automatically go into a sleep mode. To exit sleep mode, press any key." Why does it have any need to go to sleep. Why would it use any power if no one is pressing a key? This is not a cordless phone that waits for phone calls, whose battery drains even when not in use. (For that matter. why don't cordless phones have on/off switches. They can go without charging for about 2 days. If you could rely on the ringer in the other room and turn the cordless phone OFF, they wouldnt' need a charge for 10 days or more. ) This is the item. Before you buy it, there's a newer version now. http://www.amazon.com/FAVI-FE01-BL-W...wifi+keyboards Thanks. A wireless keyboard uses Bluetooth to communicate with the computer. This takes energy and drains the battery eventually. What the keyboard does is it goes into a low power mode where the Bluetooth transceiver is shut down, and the keyboard likely only scans for presses once a second or so. So now you are down to the microamp power load and batteries can provide that for along time, compared to milliamps of draw when busy with Bluetooth and keystrokes. Cordless phones do have low power mode, but they still have to 'listen' for the RF signal to wake them up, and a receiver does draw more power than simply sleeping. Cell phones low power mode still transmits and receives RF so the various features are kept up to date - location, chat with local cell towers to keep the device able to receive, etc. John :-#)# -- (Please post followups or tech inquiries to the USENET newsgroup) John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
#10
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Why does a keyboard need to go to sleep.
In sci.electronics.repair, on Sat, 15 Aug 2015 14:11:57 -0700, John
Robertson wrote: On 08/14/2015 6:30 PM, micky wrote: Online I see for sale a wireless keyboard/mouse, and it says about it "Auto Sleep And Wake Feature This keyboard also features an auto sleep and auto wake mode. If there is a long period of inactivity, the keyboard will automatically go into a sleep mode. To exit sleep mode, press any key." Why does it have any need to go to sleep. Why would it use any power if no one is pressing a key? This is not a cordless phone that waits for phone calls, whose battery drains even when not in use. (For that matter. why don't cordless phones have on/off switches. They can go without charging for about 2 days. If you could rely on the ringer in the other room and turn the cordless phone OFF, they wouldnt' need a charge for 10 days or more. ) This is the item. Before you buy it, there's a newer version now. http://www.amazon.com/FAVI-FE01-BL-W...wifi+keyboards Thanks. A wireless keyboard uses Bluetooth Many don't. Some use non-bluetooth RF (and some use IR but I wasn't talking about those) but I apreciate the rest of your post. to communicate with the computer. This takes energy and drains the battery eventually. What the keyboard does is it goes into a low power mode where the Bluetooth transceiver is shut down, and the keyboard likely only scans for presses once a second or so. So now you are down to the microamp power load and batteries can provide that for along time, compared to milliamps of draw when busy with Bluetooth and keystrokes. Cordless phones do have low power mode, but they still have to 'listen' for the RF signal They don't have to, if the user is able to hear the "bell" on the base station or any other sounder he's installed. to wake them up, and a receiver does draw more power than simply sleeping. Cell phones low power mode still transmits and receives RF so the Cell phones rarely if ever have extensions and certainly don't have base stations whose bells you can hear. But even they can be turned off so they neither transmit nor receive. That's what I would like in a cordless phone and a keyboard. Here is one wireless keyboard that does have an off-switch. http://www.hhgregg.com/logitech-wire...9-005056947d48 "12-month battery life - You can go a full year doing the things you love without battery hassles. An on/off switch helps you save power when you’re not using the keyboard" The logitech website says the same thing. They made this for when people watch tv and they know that's only a small part of the time. http://www.logitech.com/en-us/produc...keyboard-k400r The brief pdf file says "Power Off and power On the keyboard." Don't they mean all the way off? (BTW, this is a lot bigger than the one I asked about, but its rows of keys are offset like standard keyboards, and it will be a lot easier to type on. Actually there are a lot of full size ones and only a few little ones. Like all of them so far, it only claims a 10 meter range, so I'd have to put some sort of USB extension to make the USB receiver close enough to the keyboard.) various features are kept up to date - location, chat with local cell towers to keep the device able to receive, etc. John :-#)# |
#11
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Why does a keyboard need to go to sleep.
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#12
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Why does a keyboard need to go to sleep.
"Who's going to be able to detect that against their megawatts of
background? " The same kind of bleeding heart liberals who threw the vitamin tablet industry out of the country. (too expensive to handle the waste products) The same kind of "scientists" who came up with "carbon credits". The same kind of money grubbing assholes who make it so you have to get a pollution check on your car and won't give you license plates if the ****ing overdrive doesn't work right and you have to spend two grand on a car that is worth $500 to get to ****ing work to pay the taxes they use against you. You asked. Want more ? The same kind of asshles who mandated lower wattage from the already most efficient lighting - flourescent. When I was in business I used flourescent lighting because it was more efficient and the tubes lasted a long time so I did not have to get up on a ladder and change them much. But then the bleeding hearts got ahold of power and because some ****ing eagle dies in Death Valley they had to "improve" things and now a flourescent tube does not last ten years, it is lucky to make it a year. And it flickers or won't start when it is cold. These ****ing assholes, for a matter of a few watts, have proceeded to make the flourescent tube manufacturers a ton of money and do not have the common sense to realize the cost, environmental wise, of the manufacture of gazillions more flourescent tubes because they do not last. Here's more, lead free solder. Because they know the junk the build now is soon to hit the landfills they use lead free solder. There is ZERO talk of making a product that lasts longer, that would be contrary to business interests. Seriously, think about that. And while you do, if you really grasp it, you will see that industry writes the rules. All the standards for automobiles for example, are for the car companies. They serve to make it harder for an upstart to get into the business. (remember Tucker ?) Not one environmental law or safety reg was ever passed without their approval. Got that ? The laws in this country are set up to make the big guys the maximum amount of money and to protect their "turf" and if you really look, open your mind and see things how they are, this comes apparent. |
#13
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Why does a keyboard need to go to sleep.
Simply put: wouldn't YOU get tired of people banging on your head all day?
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#14
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Why does a keyboard need to go to sleep.
On Thursday, August 20, 2015 at 7:07:19 PM UTC-5, Madness wrote:
Simply put: wouldn't YOU get tired of people banging on your head all day? Never tried it unless you count trying to watch TV during election time. Actually, now that I stopped watching TV I guess my head feels a little bit better. |
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