Each halftone dot is randomly placed, and the halftone dot area rate at which half of the halftone dots join with their adjacent halftone dots in an image area having a uniform image density is set to a value larger than 50%. When each halftone dot joins with its adjacent halftone dots, a plurality of joining points at which the halftone dot joins with-its adjacent halftone dots do not simultaneously start to join with the adjacent halftone dots.

A capstan motor control circuit comprises a comparing circuit for comparing an instruction voltage dependent on an instructed low-speed search mode and a rotational speed voltage dependent on a present rotational speed of a capstan motor, a circuit for detecting a rotating direction of the capstan motor and for generating a rotating direction instruction which instructs rotation in a direction opposite to a detected present rotating direction of the capstan motor, a circuit for generating a brak...

The present invention is made to effectively prevents the occurrence of undesirable dot patterns in the process of FM screening. Threshold values in an M1.times.M2 threshold matrix are determined using a plurality of fundamental tiles of 2.times.2 dots in size. The method of the invention arranges the plurality of fundamental tiles in the M1.times.M2 threshold matrix region, while not allowing the fundamental tiles to have preset forbidden arrangements. This gives a 50% dot pattern including 50%...

A halftone dot forming method of the invention uses a replicated unit area of prescribed configuration including N pieces of halftone dot areas, where N is an integer of at least 2. An image signal is compared with threshold values assigned to pixels in the replicated unit area to form the halftone dots. The threshold value distribution in the replicated unit area is determined so as to form halftone dots whose areas are substantially equal at an arbitrary halftone dot area rate and which interc...

Halftone cells each serving as a unit for formation of a dot are arranged in irregular shapes at random and divided into two groups. The halftone cells (720) in the first group are fewer than the halftone cells (730) in the second group and dispersed, and the area of each of the halftone cells (720) in the first group is set larger than that in the second group. The dot growth speed of the halftone cells (720) in the first group is higher than that of the halftone cells (730) in the second group...

In a matrix area (720), a plurality of highlight-side dot centers (731) and a plurality of shadow-side dot centers (741) are regularly arranged and a plurality of reference points (751) are set while being distributed almost uniformly. Each of the dot centers (731, 741) is rotated about a nearest reference point (751). Threshold values of the matrix area (720) are determined so that halftone dot areas should be changed around a plurality of highlight-side dot centers (731) after being rotated in...

A direction detector operates for detecting a direction of feed of a recording tape. A timer operates for counting pulses of a clock signal, and outputting a signal representing a first count value. A second count value is generated which corresponds to a pulse width related to a first bit represented by an input time code signal reproduced from the recording tape. The first count value which occurs at a first time point and the second count value are added into a first addition-result value. An...

An apparatus for mounting a plate on a plate cylinder includes a plate lockup device, reference pins, and a lamp. The plate lockup device is provided in a gap formed in the circumference surface of the plate cylinder. The reference pins are electrically rendered conductive by an insertion end of a plate inserted to a gripper surface of the plate lockup device, thereby detecting insertion of the plate. The lamp confirms and indicates insertion of the plate from an output from the reference pins.

A video signal reproduction or record/reproduction apparatus comprises a first playback circuit reproducing a normal video signal from a recording medium and outputting a reproduced normal video signal to a TV receiver, and a second playback circuit reproducing a high definition video signal from the recording medium and outputting a reproduced high definition video signal to the TV receiver. The type of a reproduced video signal is judged. When the judgement result indicates that the type of th...

An epoxy resin composition for encapsulating semiconductors and semiconductor elements is disclosed. This epoxy resin composition mainly comprises (a) a polyfunctional epoxy compound, (b) a styrene type block copolymer or styrene type block copolymer and liquid rubber, (c) a hardener for the epoxy compound and (d) an inorganic filler.