notification of a live webcam image

Discussion in 'HTML' started by Kooner, Dec 1, 2003.

  1. Kooner

    Kooner Guest

    Hello,

    I have a webcam and was able to send images to my webpage that is
    refreshed every 30s. My webcam is not always plugged in. My question
    is,if someone visits my webpage, how will they know if the images are
    really live or from a few days ago when my webcam was last plugged in?
    Let's assume the date doesn't not appear on the images. Would I need
    to insert some html or javascript code in my webpage to check if my
    webcam is plugged in and then diplay the result on my web page to let
    someone know that the images really are live?

    Kooner
    Kooner, Dec 1, 2003
    #1
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  2. Kooner

    Jedi Guest

    Why don't you just create a simple JavaScript, or simply plain HTML, that
    displays the date of creation of the page (image)?

    Bodi


    "Kooner" <> wrote in message
    news:...
    > Hello,
    >
    > I have a webcam and was able to send images to my webpage that is
    > refreshed every 30s. My webcam is not always plugged in. My question
    > is,if someone visits my webpage, how will they know if the images are
    > really live or from a few days ago when my webcam was last plugged in?
    > Let's assume the date doesn't not appear on the images. Would I need
    > to insert some html or javascript code in my webpage to check if my
    > webcam is plugged in and then diplay the result on my web page to let
    > someone know that the images really are live?
    >
    > Kooner
    Jedi, Dec 1, 2003
    #2
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  3. Kooner

    Kooner Guest

    My windows' clock is very slow. If my computer is left on for a few
    days, my clock looses 10 minutes every hour. Only after I reset my
    computer does my clock show the correct time. So how does a web page
    know if a web cam image is live or not? Is there a command to query
    the usb port to check if a web cam is plugged in?
    Kooner


    "Jedi" <> wrote in message news:<Sdzyb.108972$>...
    > Why don't you just create a simple JavaScript, or simply plain HTML, that
    > displays the date of creation of the page (image)?
    >
    > Bodi
    >
    >
    > "Kooner" <> wrote in message
    > news:...
    > > Hello,
    > >
    > > I have a webcam and was able to send images to my webpage that is
    > > refreshed every 30s. My webcam is not always plugged in. My question
    > > is,if someone visits my webpage, how will they know if the images are
    > > really live or from a few days ago when my webcam was last plugged in?
    > > Let's assume the date doesn't not appear on the images. Would I need
    > > to insert some html or javascript code in my webpage to check if my
    > > webcam is plugged in and then diplay the result on my web page to let
    > > someone know that the images really are live?
    > >
    > > Kooner
    Kooner, Dec 1, 2003
    #3
  4. Kooner

    Jedi Guest

    I don't know of an intrinsic command to check for that, you could probably
    accomplish it with some very complex java code, but that would require high
    security settings, and MS probably disabled querying for things like that.

    As for your clock, you could get one of those tiny freeware apps that
    updates your clock from the Internet, that would solve a few of your
    problems.

    Bodi

    "Kooner" <> wrote in message
    news:...
    > My windows' clock is very slow. If my computer is left on for a few
    > days, my clock looses 10 minutes every hour. Only after I reset my
    > computer does my clock show the correct time. So how does a web page
    > know if a web cam image is live or not? Is there a command to query
    > the usb port to check if a web cam is plugged in?
    > Kooner
    >
    >
    > "Jedi" <> wrote in message

    news:<Sdzyb.108972$>...
    > > Why don't you just create a simple JavaScript, or simply plain HTML,

    that
    > > displays the date of creation of the page (image)?
    > >
    > > Bodi
    > >
    > >
    > > "Kooner" <> wrote in message
    > > news:...
    > > > Hello,
    > > >
    > > > I have a webcam and was able to send images to my webpage that is
    > > > refreshed every 30s. My webcam is not always plugged in. My question
    > > > is,if someone visits my webpage, how will they know if the images are
    > > > really live or from a few days ago when my webcam was last plugged in?
    > > > Let's assume the date doesn't not appear on the images. Would I need
    > > > to insert some html or javascript code in my webpage to check if my
    > > > webcam is plugged in and then diplay the result on my web page to let
    > > > someone know that the images really are live?
    > > >
    > > > Kooner
    Jedi, Dec 1, 2003
    #4
  5. Kooner

    Adrienne Guest

    Gazing into my crystal ball I observed (Kooner) writing
    in news::

    > My windows' clock is very slow. If my computer is left on for a few
    > days, my clock looses 10 minutes every hour. Only after I reset my
    > computer does my clock show the correct time.


    Go to http://www.rocketsoftware.com/rockettime/ and download Rocket Time.
    It adjusts your computer's clock against the atomic time servers.

    --
    Adrienne Boswell
    Please respond to the group so others can share
    http://www.arbpen.com
    Adrienne, Dec 1, 2003
    #5
  6. > As for your clock, you could get one of those tiny freeware apps that
    > updates your clock from the Internet, that would solve a few of your
    > problems.


    Or, if you have windows 2000 or XP, there's a built-in NTP client. Check
    the documentation for the 'Windows Time' service.
    Owen Jacobson, Dec 1, 2003
    #6
  7. Kooner

    Mark Parnell Guest

    Mark Parnell, Dec 1, 2003
    #7
  8. Kooner

    Chuck Guest

    "Adrienne" <> wrote in message
    news:Xns94446F1E2689arbpenyahoocom@207.115.63.158...
    > Gazing into my crystal ball I observed (Kooner) writing
    > in news::
    >
    > > My windows' clock is very slow. If my computer is left on for a few
    > > days, my clock looses 10 minutes every hour. Only after I reset my
    > > computer does my clock show the correct time.

    >
    > Go to http://www.rocketsoftware.com/rockettime/ and download Rocket Time.
    > It adjusts your computer's clock against the atomic time servers.


    Of course, your other option is to replace the cmos battery and not have to
    worry about the clock losing time that quickly.

    Chuck

    >
    > --
    > Adrienne Boswell
    > Please respond to the group so others can share
    > http://www.arbpen.com
    Chuck, Dec 2, 2003
    #8
  9. (Kooner) wrote in message news:<>...
    > Hello,
    >
    > I have a webcam and was able to send images to my webpage that is
    > refreshed every 30s. My webcam is not always plugged in. My question
    > is,if someone visits my webpage, how will they know if the images are
    > really live or from a few days ago when my webcam was last plugged in?
    > Let's assume the date doesn't not appear on the images. Would I need
    > to insert some html or javascript code in my webpage to check if my
    > webcam is plugged in and then diplay the result on my web page to let
    > someone know that the images really are live?


    You're not going to solve this with HTML, are you? It can't be done.
    You have a number of options:
    - get your web cam software to add a time-stamp to the image file

    - get your web cam software to craete the page for you and include the
    timestamp

    - use some server-side scripting to stat the file and get its time
    stamp and output that to the HTML document

    - don't worry about it. Does anyone (apart from you) really care when
    it was last updated?

    --
    Hywel
    Hywel Jenkins, Dec 2, 2003
    #9
  10. Kooner

    Kooner Guest

    "Chuck" <> wrote in message news:<HWUyb.29867$_h.4379@lakeread02>...
    > "Adrienne" <> wrote in message
    > news:Xns94446F1E2689arbpenyahoocom@207.115.63.158...
    > > Gazing into my crystal ball I observed (Kooner) writing
    > > in news::
    > >
    > > > My windows' clock is very slow. If my computer is left on for a few
    > > > days, my clock looses 10 minutes every hour. Only after I reset my
    > > > computer does my clock show the correct time.

    > >
    > > Go to http://www.rocketsoftware.com/rockettime/ and download Rocket Time.
    > > It adjusts your computer's clock against the atomic time servers.

    >
    > Of course, your other option is to replace the cmos battery and not have to
    > worry about the clock losing time that quickly.
    >
    > Chuck
    >


    But I thought my clock is running slow because of the windows98
    (software) clock. Isn't the cmos battery for the hardware clock? My
    computer always shows the correct time when I first boot up. I though
    this means the hardware clock is ok, so I wouldn't need to change the
    battery.

    Kooner
    Kooner, Dec 5, 2003
    #10
  11. Kooner

    Chuck Guest

    "Kooner" <> wrote in message
    news:...
    > > Of course, your other option is to replace the cmos battery and not have

    to
    > > worry about the clock losing time that quickly.
    > >
    > > Chuck
    > >

    >
    > But I thought my clock is running slow because of the windows98
    > (software) clock. Isn't the cmos battery for the hardware clock? My
    > computer always shows the correct time when I first boot up. I though
    > this means the hardware clock is ok, so I wouldn't need to change the
    > battery.
    >
    > Kooner


    Oh. I thought you were saying your puter was losing time all around. In your
    case, changing the battery wouldn't help. Sorry.

    Chuck
    Chuck, Dec 6, 2003
    #11
  12. Kooner

    Guest

    Chuck wrote:
    > "Kooner" <> wrote in message
    > news:...
    >
    >>>Of course, your other option is to replace the cmos battery and not have

    >
    > to
    >
    >>>worry about the clock losing time that quickly.
    >>>
    >>>Chuck
    >>>

    >>
    >>But I thought my clock is running slow because of the windows98
    >>(software) clock. Isn't the cmos battery for the hardware clock? My
    >>computer always shows the correct time when I first boot up. I though
    >>this means the hardware clock is ok, so I wouldn't need to change the
    >>battery.
    >>
    >>Kooner

    >
    >
    > Oh. I thought you were saying your puter was losing time all around. In your
    > case, changing the battery wouldn't help. Sorry.
    >
    > Chuck
    >
    >


    Just out of curiosity,

    Is there a way to make the windows clock work faster? I mean that
    windows (or the computer for that matter) *thinks* 10 minutes elapse
    when in real time only 5 have?

    Just want to know if it's somehow possible :)
    , Dec 6, 2003
    #12
  13. Kooner

    rf Guest

    <> wrote in message
    news:lrfAb.255$...
    > Chuck wrote:
    > > "Kooner" <> wrote in message
    > > news:...


    [discussion of slow clock in a computer]

    > Just out of curiosity,
    >
    > Is there a way to make the windows clock work faster? I mean that
    > windows (or the computer for that matter) *thinks* 10 minutes elapse
    > when in real time only 5 have?
    >
    > Just want to know if it's somehow possible :)


    Oddly enough yes it is very possible.

    Go over to http://microsoft.com and look for SetSystemTimeAdjustment. One
    can fiddle with this and achieve any number of weird effects. I suspect this
    is what is wrong with the clock in the offending computer. Somebody has
    installed some software that has fiddled with the time adjustment.

    Cheers
    Richard.
    rf, Dec 6, 2003
    #13
  14. On Sat, 06 Dec 2003 08:26:12 +0000, rf wrote:

    > [discussion of slow clock in a computer]


    Topic? I can't even *see* the topic from here. ^_^

    > Go over to http://microsoft.com and look for SetSystemTimeAdjustment. One
    > can fiddle with this and achieve any number of weird effects. I suspect this
    > is what is wrong with the clock in the offending computer. Somebody has
    > installed some software that has fiddled with the time adjustment.


    Or the system's Real-Time Clock bits are no longer the same speed they
    were when Windows was installed.
    Owen Jacobson, Dec 6, 2003
    #14
  15. Kooner

    rf Guest

    "Owen Jacobson" <> wrote in message
    news:p...
    > On Sat, 06 Dec 2003 08:26:12 +0000, rf wrote:
    >
    > > [discussion of slow clock in a computer]

    >
    > Topic? I can't even *see* the topic from here. ^_^
    >
    > > Go over to http://microsoft.com and look for SetSystemTimeAdjustment.

    One
    > > can fiddle with this and achieve any number of weird effects. I suspect

    this
    > > is what is wrong with the clock in the offending computer. Somebody has
    > > installed some software that has fiddled with the time adjustment.

    >
    > Or the system's Real-Time Clock bits are no longer the same speed they
    > were when Windows was installed.


    ?

    The real time clock registers are reprogrammed at each boot.

    Cheers
    Richard.
    rf, Dec 6, 2003
    #15
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