Such a device (virtual keyboard using a data glove) would need some sort of feedback for the user, either visual or haptic (touch).
A standard keyboard gives multiple kinds of haptic feedback, both the up/down response (spring) when you click it, and the information about alignment (you can feel it when you don't hit the key in its center).
[Imaging touch typing without a sense of touch.]
Visual feedback (say from display goggles) would kinda defeat the purpose (touch typing).
Some "data gloves" do give force feedback, but they are very expensive
Without feedback there would be no way to keep your hands aligned to the virtual keys. The computer could use some sort of algorithm that continuously repositioned the "keyboard" based upon contexual information about what you type, but that is probably too complex. [Of course if would go nuts if you typed stuff like fsck -F ufs...]
Ah, but even if copyright is not declared, the person has a copyright on their work. If you use an image from someone's web page w/o persmission (excluding "fair use"), you may be liable for infringement, unless the person actively waives copyright or gives you permission to use his/her work.
A lossless codec is not always easy to reverse engineer.
Imagine a codec with built-in 3DES encryption and a very well hidden key. So long as the key was well hidden, merely knowing the input and output is not enough to make the statement that the codec is easy to reverse engineer.
OTOH, once the key is known, your statement may be correct.
In Europe (and pretty much everywhere else) cell phones are "calling party pays". This means that it costs more to call a cell phone because the caller pays for it.
For example, in Finland each wireless carrier has its own area code, so you know in advance that you will pay more for the call.
The change in the US means that calls to cell phones might become regional or long distance, but the called party still pays. The US is NOT switching to calling party pays (although Verizon tried it in DE a while back, AFAIK).
A. El Gammal, et al. published a 10,000fps imager with a 352x288 pixel resolution. This guy can maintain the full speed indefinately. Unfortunately is it not a commercial device, but something similar will probably be available within a few years.
Kleinfelder, S. SukHwan Lim Xinqiao Liu El Gamal, A. "A 10000 frames/s CMOS digital pixel sensor", Solid-State Circuits, IEEE Journal of. v38 n12, pp. 2049-2059. Feb. 2001.
The abstact is as follows: A 352 x 288 pixel CMOS image sensor chip with per-pixel single-slope ADC and dynamic memory in a standard digital 0.18um CMOS process is described. The chip performs "snapshot" image acquisition, parallel 8-bit A/D conversion, and digital readout at continuous rate of 10000 frames/s or 1 Gpixels/s with power consumption of 50 mW. Each pixel consists of a photogate circuit, a three-stage comparator, and an 8-bit 3T dynamic memory comprising a total of 37 transistors in 9.4x9.4 um with a fill factor of 15%. The photogate quantum efficiency is 13.6%, and the sensor conversion gain is 13.1uV/e. At 1000 frames/s, measured integral nonlinearity is 0.22% over a 1-V range, rms temporal noise with digital CDS is 0.15%, and rms FPN with digital CDS is 0.027%. When operated at low frame rates, on-chip power management circuits permit complete powerdown between each frame conversion and readout. The digitized pixel data is read out over a 64-bit (8-pixel) wide bus operating at 167 MHz, i.e., over 1.33 GB/s. The chip is suitable for general high-speed imaging applications as well as for the implementation of several still and standard video rate applications that benefit from high-speed capture, such as dynamic range enhancement, motion estimation and compensation, and image stabilization.
The problem with messing with a digital odometer is that it would be illegal, and with good reason. ---- No, I don't support the DMCA:-)
Hacking an old fashioned analog odometer is easy (at least I imagine it to be), and people do it frequently. It is also possible to detect odometer rollbacks through DMV records in many states.
One possible advantage of digital odometers is that you could make it impossible (ie really hard) to mess with them. It would not be too hard to make an IC with EPROM that counts only upwards (such things probably exist already).
Of course it would still be possible to make an odometer count more slowly (just like my analog one does for some reason, by about 1%. Of course I will drive the car until it dies, so who cares).
So airplanes using GPS to land near cities (BOS, LGA, DCA, etc.) would not be able to use GPS? The FAA is investing huge amounts of money for the wide and local area augmentation systems (WAAS and LAAS) the enhance GPS (http://www.gps.tc.faa.gov/gps_sys.html).
One of the ideas behind UWB is that it is easy to add to a device, so everyone will have many UWB devices. This means no more radio astronomy, no more GPS (people in airplanes will end up carrying active UWB devices), etc.
Also, UWB will add noise to frequencies that the FCC auctioned off for exclusive use (cellular, PCS, etc.) Will the companies that hold these licenses sue because they are being denied use of these frequencies?
UWB will not make GPS "obsolete," it will "break" GPS by raising the noise floor in the GPS frequency range. GPS signals are very low power (at the receiver), so adding noise by having millions of UWB devices contaminating the GPS frequencies will, in effect, jam any GPS device.
This has been repeated ad nauseam, but the media's (Disney, etc.) main concern, as talonyx stated, is the "easy ability to... copy".
Digital is not inherently better than analog, but digital copies are perfect copies. You can make a copy of a copy of a copy, etc. and the 1000th copy is exactly the same as the original. Try doing that with a VCR.
Of course, the TV stations are already broadcasting the original analog data over the air for everyone to see for free. They wouldn't be making much money if they weren't doing this.
Things would kinda suck if everyone had one of these SonicBlue PVRs, since there would be no advertising revenue, so TV would no longer be free.
If you could send a VHS quality video signal over a phone line in real time, everyone would be doing it, and every electronics store would sell "video over phone" boxes.
The bandwidth of a POTS line is less than 4kHz (limited by ADCs and DACs in the central office, which sample 8bits at 8kHz; the effective bandwidth is about 3kHz), whereas an NTSC video signal (broadcast quality) is about 6MHz. You would need 2000 "100% analog" POTS lines to send a video signal. One POTS line would get a full-resolution frame in just over one minute (67 seconds per frame versus 30 frames per second). Remember home video phones and how successful they were?
Even the best compression algorithms and the fastest modems still produce really crappy video over phone lines. DSL gets higher speed by bypassing the ADCs/DACs. Even high speed DSL connections use an effective analog bandwidth of about 1MHz.
I would really want to buy Internet services from a company that likes to advertise it competence as follows (go to www.ipservices.att.com/, I trimmed the message)
Error Occurred While Processing Request
Error Diagnostic Information
An error occurred while evaluating the expression:
This brings up an interesting issue. If browsers for the sight-impaired could not access the site because of this ad stuff, then would the site not violate the Americans with Disabilities Act (US only)?
Re:20 - 8 means a slower clock???
on
Itanium Update
·
· Score: 1
The whole idea is that you do less in each step, so that each step can run faster.
In an assembly line, say there are 21 screws to put in. If each step has one person inserting 3 screws, it will take 7 steps to do it. Now if each step has one person inserting one screw, it will take 21 steps, but each step can go three times as fast.
The steps are serial. In the first case you would have 7 people, in the second case you would have 21 people (stages), but you could do three times as much work per unit time.
The link to the intel doc posted by Anonymous Coward contains a space in "article", remove it and the link will work fine (this must be because that is where the line break occurs in the "Comment" box if you insert the link).
Perhaps a good type of filter would warn of potentially inappropriate content before displaying a page, instead of just blocking it. A librarian (in the case of a child) or the user could simply continue by accepting that they may be faced with such content.
Perhaps with a parent's permission (or the user's own acceptance if older than 18) the filter could be disabled.
What's wrong with having the screens face a public area? In a computer room at undergrad school only the last row of machines had porn in their browser histories; people don't want to be caught viewing porn.
Slashdot Mirror
Such a device (virtual keyboard using a data glove) would need some sort of feedback for the user, either visual or haptic (touch).
...]
A standard keyboard gives multiple kinds of haptic feedback, both the up/down response (spring) when you click it, and the information about alignment (you can feel it when you don't hit the key in its center).
[Imaging touch typing without a sense of touch.]
Visual feedback (say from display goggles) would kinda defeat the purpose (touch typing).
Some "data gloves" do give force feedback, but they are very expensive
Without feedback there would be no way to keep your hands aligned to the virtual keys. The computer could use some sort of algorithm that continuously repositioned the "keyboard" based upon contexual information about what you type, but that is probably too complex. [Of course if would go nuts if you typed stuff like fsck -F ufs
Ah, but even if copyright is not declared, the person has a copyright on their work. If you use an image from someone's web page w/o persmission (excluding "fair use"), you may be liable for infringement, unless the person actively waives copyright or gives you permission to use his/her work.
A lossless codec is not always easy to reverse engineer.
Imagine a codec with built-in 3DES encryption and a very well hidden key. So long as the key was well hidden, merely knowing the input and output is not enough to make the statement that the codec is easy to reverse engineer.
OTOH, once the key is known, your statement may be correct.
In Europe (and pretty much everywhere else) cell phones are "calling party pays". This means that it costs more to call a cell phone because the caller pays for it.
For example, in Finland each wireless carrier has its own area code, so you know in advance that you will pay more for the call.
The change in the US means that calls to cell phones might become regional or long distance, but the called party still pays. The US is NOT switching to calling party pays (although Verizon tried it in DE a while back, AFAIK).
The authors are:
Kleinfelder, S. ; SukHwan Lim ; Xinqiao Liu ; El Gamal, A.
The date should be Dec. 2001, not Feb.
Don't you mean a bit late for April fools?
A. El Gammal, et al. published a 10,000fps imager with a 352x288 pixel resolution. This guy can maintain the full speed indefinately. Unfortunately is it not a commercial device, but something similar will probably be available within a few years.
Kleinfelder, S. SukHwan Lim Xinqiao Liu El Gamal, A. "A 10000 frames/s CMOS digital pixel sensor", Solid-State Circuits, IEEE Journal of. v38 n12, pp. 2049-2059. Feb. 2001.
The abstact is as follows:
A 352 x 288 pixel CMOS image sensor chip with per-pixel single-slope ADC and dynamic memory in a standard digital 0.18um CMOS process is described. The chip performs "snapshot" image acquisition, parallel 8-bit A/D conversion, and digital readout at continuous rate of 10000 frames/s or 1 Gpixels/s with power consumption of 50 mW. Each pixel consists of a photogate circuit, a three-stage comparator, and an 8-bit 3T dynamic memory comprising a total of 37 transistors in 9.4x9.4 um with a fill factor of 15%. The photogate quantum efficiency is 13.6%, and the sensor conversion gain is 13.1uV/e. At 1000 frames/s, measured integral nonlinearity is 0.22% over a 1-V range, rms temporal noise with digital CDS is 0.15%, and rms FPN with digital CDS is 0.027%. When operated at low frame rates, on-chip power management circuits permit complete powerdown between each frame conversion and readout. The digitized pixel data is read out over a 64-bit (8-pixel) wide bus operating at 167 MHz, i.e., over 1.33 GB/s. The chip is suitable for general high-speed imaging applications as well as for the implementation of several still and standard video rate applications that benefit from high-speed capture, such as dynamic range enhancement, motion estimation and compensation, and image stabilization.
The problem with messing with a digital odometer is that it would be illegal, and with good reason. ---- No, I don't support the DMCA :-)
Hacking an old fashioned analog odometer is easy (at least I imagine it to be), and people do it frequently. It is also possible to detect odometer rollbacks through DMV records in many states.
One possible advantage of digital odometers is that you could make it impossible (ie really hard) to mess with them. It would not be too hard to make an IC with EPROM that counts only upwards (such things probably exist already).
Of course it would still be possible to make an odometer count more slowly (just like my analog one does for some reason, by about 1%. Of course I will drive the car until it dies, so who cares).
Colllege of Notre Dame of Maryland
an all-girl's Catholic collge
Could Brazil sue Amazon.com from improper use of their trademark? People wanting to know about the Amazon might go to amazon.com.
Just like the [former] owners of barcelona.com, amazon.com profits from their use of a foreign trademark, or at least they try to.
So airplanes using GPS to land near cities (BOS, LGA, DCA, etc.) would not be able to use GPS? The FAA is investing huge amounts of money for the wide and local area augmentation systems (WAAS and LAAS) the enhance GPS (http://www.gps.tc.faa.gov/gps_sys.html).
One of the ideas behind UWB is that it is easy to add to a device, so everyone will have many UWB devices. This means no more radio astronomy, no more GPS (people in airplanes will end up carrying active UWB devices), etc.
Also, UWB will add noise to frequencies that the FCC auctioned off for exclusive use (cellular, PCS, etc.) Will the companies that hold these licenses sue because they are being denied use of these frequencies?
UWB will not make GPS "obsolete," it will "break" GPS by raising the noise floor in the GPS frequency range. GPS signals are very low power (at the receiver), so adding noise by having millions of UWB devices contaminating the GPS frequencies will, in effect, jam any GPS device.
This has been repeated ad nauseam, but the media's (Disney, etc.) main concern, as talonyx stated, is the "easy ability to... copy".
Digital is not inherently better than analog, but digital copies are perfect copies. You can make a copy of a copy of a copy, etc. and the 1000th copy is exactly the same as the original. Try doing that with a VCR.
Of course, the TV stations are already broadcasting the original analog data over the air for everyone to see for free. They wouldn't be making much money if they weren't doing this.
Things would kinda suck if everyone had one of these SonicBlue PVRs, since there would be no advertising revenue, so TV would no longer be free.
If you could send a VHS quality video signal over a phone line in real time, everyone would be doing it, and every electronics store would sell "video over phone" boxes.
The bandwidth of a POTS line is less than 4kHz (limited by ADCs and DACs in the central office, which sample 8bits at 8kHz; the effective bandwidth is about 3kHz), whereas an NTSC video signal (broadcast quality) is about 6MHz. You would need 2000 "100% analog" POTS lines to send a video signal. One POTS line would get a full-resolution frame in just over one minute (67 seconds per frame versus 30 frames per second). Remember home video phones and how successful they were?
Even the best compression algorithms and the fastest modems still produce really crappy video over phone lines. DSL gets higher speed by bypassing the ADCs/DACs. Even high speed DSL connections use an effective analog bandwidth of about 1MHz.
I would really want to buy Internet services from a company that likes to advertise it competence as follows (go to www.ipservices.att.com/, I trimmed the message)
Error Occurred While Processing Request
Error Diagnostic Information
An error occurred while evaluating the expression:
server.cfa.types[ds][typeID] = Duplicate( stTypes[typeID] )
Error near line 237, column 30.
This brings up an interesting issue. If browsers for the sight-impaired could not access the site because of this ad stuff, then would the site not violate the Americans with Disabilities Act (US only)?
The whole idea is that you do less in each step, so that each step can run faster.
In an assembly line, say there are 21 screws to put in. If each step has one person inserting 3 screws, it will take 7 steps to do it. Now if each step has one person inserting one screw, it will take 21 steps, but each step can go three times as fast.
The steps are serial. In the first case you would have 7 people, in the second case you would have 21 people (stages), but you could do three times as much work per unit time.
The link to the intel doc posted by Anonymous Coward contains a space in "article", remove it and the link will work fine (this must be because that is where the line break occurs in the "Comment" box if you insert the link).
Perhaps a good type of filter would warn of potentially inappropriate content before displaying a page, instead of just blocking it. A librarian (in the case of a child) or the user could simply continue by accepting that they may be faced with such content.
Perhaps with a parent's permission (or the user's own acceptance if older than 18) the filter could be disabled.
What's wrong with having the screens face a public area? In a computer room at undergrad school only the last row of machines had porn in their browser histories; people don't want to be caught viewing porn.