1. A system that performs supplemental frequency domain training of a time domain equalizer comprising:
a training module that uses an initial solution for time domain equalizer coefficients and determines updated time domain equalizer coefficients by maximizing the number of bits per frame; and
a time domain equalizer that receives the updated time domain equalizer coefficients, wherein the training module further determines a mean squared signal value for each bin, for the given time domain equalizer coefficients.
2. The system of claim 1, wherein the training module further determines an average error squared value over a predetermined number of frames for each bin.
3. A method that performs supplemental frequency domain training of a time domain equalizer comprising:
receiving a solution of initial time domain equalizer coefficients;
determining updated time domain equalizer coefficients by maximizing, a number of bits per frame; and
forwarding the updated time domain equalizer coefficients to a time domain equalizer, further comprising determining a mean squared signal value for each bin, for the given time domain equalizer coefficients.
4. The method of claim 3, further comprising determining the average error squared value over a predetermined number of frames for each bin.
5. An information storage media comprising information that performs supplemental frequency domain training of a time domain equalizer comprising:
information that receives initial time domain equalizer coefficients;
information that determines updated time domain equalizer coefficients by maximizing the number of bits per frame; and
information that forwards the updated time domain equalizer coefficients to a time domain equalizer, further comprising information that determines a mean squared signal value for each bin, for the given time domain equalizer coefficients.
6. The information storage media of claim 5, further comprising information that determines the average error squared value over a predetermined number of frames for each bin.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An image forming apparatus comprising:
an image forming apparatus comprising:
an image forming station for forming an unfixed toner image on a recording material;
a fixing station for fixing the unfixed toner image on the recording material, said fixing station including a rotatable member for forming a fixing nip for nipping and feeding the recording material, and a cleaner, movable toward and away from said rotatable member, for cleaning said rotatable member,
wherein said apparatus is operable in a blankless image formation mode for forming the toner image without blank at least at one of a leading end and a trailing end of the recording material, and
wherein said cleaner is contacted to said rotatable member at timing at which a portion of said rotatable member to which a blankless range at the leading end or the trailing end of the recording material contact reaches a position where the portion opposes said cleaner, and
wherein said cleaner spaces from said rotatable member in a period in which a portion of said rotatable member to which a range other than the blankless range contact passes the position where the portion opposes said cleaner.
2. An apparatus according to claim 1, further comprising a detector, provided in a sheet passage to said fixing station, for detecting passage of the recording material, wherein contacting and spacing, relative, to said rotatable member, of said cleaner is controlled in accordance with an output of said detector.
3. An apparatus according to claim 1, wherein said apparatus is operable in a blank-having image formation mode for forming the toner image with blanks at a leading end and a trailing end of the recording material, and in the blank-having image formation mode, said cleaner is maintained in a state spaced away form said rotatable member.