Displaying advertisements on blank television output

1. A method implemented in a viewing device, comprising:

receiving, at the viewing device, a first signal indicating a television channel change to a first channel from a second channel;

determining that the viewing device has been tuned to the second channel for a threshold period of time and in response to the determination, selecting, by the viewing device, advertisement data for an advertisement from a data storage device storing advertisement data for one or more advertisements, the selection of the advertisement data for the advertisement based on a category to which the second channel belongs;

generating, by the viewing device, a video signal from the advertisement data for the advertisement that causes the advertisement to be displayed on a television display device;

monitoring, by the viewing device, for the reception of a second signal, the second signal indicating that the viewing device is tuned to the first channel; and

providing, by the viewing device, the video signal to the television device until the reception of the second signal is monitored.

2. The method of claim 1 , further comprising:

determining a demographic with which the viewing device is associated; and

wherein pre-selecting advertisement data for the advertisement further comprises selecting advertisement data for an advertisement that is associated with the demographic.

3. The method of claim 1 , further comprising:

receiving, at the viewing device, the advertisement data for the one or more advertisements from an advertisement provider over an advertising communication that is separate from a television programming communication, the television programming communication be a communication of advertisement data for a television program.

4. The method of claim 1 , further comprising:

generating, by the viewing device, a tuning impression record specifying the advertisement that was displayed when the viewing device was tuned from the first channel to the second channel.

5. The method of claim 1 , wherein the advertisement data for the advertisement is advertisement data that causes text to be displayed on a television display device.

6. The method of claim 1 , wherein the advertisement data for the advertisement is advertisement data that causes an image to be displayed on a television display device.

7. The method of claim 6 , wherein the advertisement data comprises a graphic.

8. The method of claim 1 , wherein the advertisement data for the advertisement is advertisement data that causes a video to be displayed on a television display device.

9. The method of claim 1 , wherein the second signal comprises an I-frame in an MPEG stream.

10. The method of claim 1 , wherein the viewing device is a set top box, and the data storage device is included in the set top box.

11. The method of claim 1 , wherein the selecting of advertisement data for the advertisement from the data storage device is only in response to receiving the first signal.

12. A method implemented in a viewing device, comprising:

receiving, at the viewing device, a plurality of first signals, each first signal respectively indicating a television channel change to a respective first channel from a respective second channel;

for each first signal, determining whether the viewing device has been tuned to the respective second channel for a threshold period of time;

for each first signal for which the viewing device has been tuned to the respective second channel for the threshold period of time, selecting advertisement data for an advertisement based on a category to which the respective second channel belongs;

for each first signal for which the viewing device has not been tuned to the respective second channel for the threshold period of time, selecting the advertisement data based on a category to which the respective first channel belongs;

for each first signal:

generating, by the viewing device, a video signal from the advertisement data for the advertisement that causes the advertisement to be displayed on a television display device;

monitoring, by the viewing device, for a reception of a second signal, the second signal indicating that the viewing device is tuned to the first channel; and

providing, by the viewing device, the video signal to the television device until the reception of the second signal is monitored.

13. The method of claim 12 , wherein selecting the advertisement data in response to receiving the first signal comprises:

determining a category to which the first channel belongs; and

selecting advertisement data for an advertisement that belongs to the category to which the first channel belongs.

14. A viewing device, comprising:

a data storage device storing advertisement data for one or more advertisements; and

television signal processing circuitry that performs operations comprising:

receive a television broadcast signal for television programming when tuned to a first channel and generate a first video signal for displaying the television programming on a television device; and

in response to receiving a tuning signal to tune to a second channel:

determine that the viewing device has been tuned to the first channel for a threshold period of time;

in response to determining that the viewing device has been tuned to the first channel for the threshold period of time, select advertisement data for and advertisement from the data storage device, the selection based on a category to which the first channel belongs; and

generate a second video signal when tuning to the second channel, the second video signal generated only for the duration that the viewing device is tuning to the second channel, and the second video signal causing the advertisement to be displayed on the television device.

15. The viewing device of claim 14 , wherein the pre-selected advertisement data for the advertisement is advertisement data that causes text to be displayed on a television display device.

16. A method implemented in a viewing device, comprising:

receiving, at the viewing device, a first signal indicating a television channel change to a first channel from a second channel;

determining that the viewing device has been tuned to the second channel for a threshold period of time and in response to the determination, selecting, by the viewing device, advertisement data for an advertisement from a data storage device storing advertisement data for one or more advertisements, the selection of the advertisement data for the advertisement based on a category to which the second channel belongs;

generating, by the viewing device, a video signal from the advertisement data for the advertisement that causes the advertisement to be displayed on a television display device;

tuning the viewing device to the first channel; and

providing, by the viewing device, the video signal to the television device while viewing device is tuning to the first channel.

17. The method of claim 16 , wherein providing the video signal to the television device while viewing device is tuning to the first channel comprises providing the video signal to the view device until the viewing device is tuned to the first channel.