Cable Veterans to Bid in Adelphia Auction  NEW YORK (Reuters) - Several cable industry pioneers may  bid for parts of bankrupt cable operator Adelphia  Communications Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=ADELQ.PK target=/stocks/quickinfo/fullquote"&gt;ADELQ.PK&lt;/A&gt;, joining a list of competitors  that could include Time Warner Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=TWX.N target=/stocks/quickinfo/fullquote"&gt;TWX.N&lt;/A&gt; and Comcast Corp.   &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=CMCSA.O target=/stocks/quickinfo/fullquote"&gt;CMCSA.O&lt;/A&gt;, sources close to the situation said on Friday.