The present invention provides an image processing technique for cutting out a portion of an original image so that the cut-out image includes an object therein and the object is displayed in a well-balanced manner irrespective of whether the object occupies a small area or a large area in the original image. The circuit includes a first linear array of reconfigurable processing elements for processing signals from a first channel, and a second linear array of reconfigurable processing elements, coupled in parallel with the first linear array of reconfigurable processing elements, for processing signals from a second channel that is concurrent with the first channel. The invention, which can be applied to both forward and reverse auctions, permits competing participants to selectively safeguard their respective positions in the event of inadvertent disconnection from the online auction system, or other circumstances that prevent them actively participating in a critical period of the auction event. Each Issuing Unit is enabled to autonomously generate primary keys. The diameter of the first via hole is smaller than that of the second via hole, and the first isolating layer extends to completely cover the hole wall of the second via hole.