Abstract: A reflective mask blank includes a substrate and, on or above the substrate in order, a reflective layer for reflecting EUV light, a protective layer for protecting the reflective layer, and an absorbent layer for absorbing EUV light. The absorbent layer has a reflectance for a wavelength of 13.53 nm of from 2.5% to 10%. A film thickness d of the absorbent layer satisfies a relationship of: d M ? A ? X - ( i × 6 + 1 ) ? nm ? d ? d M ? A ? X - ( i × 6 - 1 ) ? nm where the integer i is 0 or 1, and dMAX is represented by: d MAX ( nm ) = 13.53 2 ? n ? cos ? 6 ? ° { INT ? ( 0.58 1 - n ) + 1 2 ? ? ? ( tan - 1 ( - k 1 - n ) + 0.64 ) } where n is a refractive index of the absorbent layer, k is an absorption coefficient of the absorbent layer, and INT(x) is a function of returning an integer value obtained by truncating a decimal part.

Abstract: A frame synchronism detection circuit is disclosed which does not consume much power even when a hunting state continues for a long period of time. A master synchronization circuit receives a main signal and an operation clock to detect a synchronization pattern first and outputs a synchronization state signal when synchronism is established. Gate circuits operate in response to the synchronization state signal outputted from the master synchronization circuit to supply operation clocks to slave synchronization circuits. The slave synchronization circuits normally receive supply of main signals and receive the operation clocks through the gate circuits to start operation thereof to establish synchronism.

Abstract: The bit synchronization circuit of the present invention has an extraction circuit for extracting only bits at specified positions from each frame of a data signal comprising a plurality of frames including synchronization detection bits which are set to specified positions of each frame and whose values are different between adjacent frames. It is decided whether synchronization is established or not by a synchronization decision circuit in accordance with values of the bits extracted from adjacent frames among the extracted bits. In the case of the above decision, the bits extracted from the adjacent frames are compared each other among the extracted bits and it is decided that synchronization is established only when the above comparison results do not coincide with each other N times consecutively. Moreover, it is decided that synchronization is not established only when the comparison results do not coincide with each other N times consecutively.

Abstract: A tapping function is imparted to a microjoint separation apparatus in order to obtain uniform cycle time and to improve productivity. The apparatus includes: grips (6) for moving a workpiece (2) in the X-axial direction of the main body (1) of the apparatus; a hammer (30) and a tapping unit (40) provided on the main body (1) and movable in a Y-axial direction perpendicular to the X-axial direction; an NC device (35) for positioning tapping point and hammering point of the workpiece (2) by moving the grips (6), the hammer (30) and the tapping unit (40) in X-Y axial directions; and cradles (31, 32) for selectively supporting a lower portion of the workpiece (2) during the hammering operation and the tapping operation.

Abstract: A channel selection apparatus used for a television receiver for automatically selecting a predetermined TV channel along with a user's habit or reception pattern for a prescribed period. The channel selection apparatus includes an input device for commanding reception control data for the channel selection, a clock device for generating a time data, a memory device for storing reception control data supplied from the input device for a predetermined period together with time data responding to the reception control data to be stored, a control device for controlling the memory device for a writing reception control data and its responding time data thereto and a reading out predetermined reception control data with time data responding to the present time and an output device responsive to the control device for receiving the reception control data.

Abstract: A transmission signal includes a framing code and a data signal following the framing code. The framing code has a predetermined pattern which can be identified even if a bit error occurs therein. A signal fetcher fetches the transmission signal upon detecting the framing code which is included therein, on the basis of a reference signal. A framing code detector compares an output from the fetcher with pattern data corresponding to a predetermined pattern of the framing code. If the output has a bit error with respect to the pattern data, the detector generates a first framing code-detection output, for supply to the fetcher, as a signal for providing the timing. However, if the output coincides with the pattern data, the detector generates a second framing code-detection output. A reference signal generator generates the reference signal for the fetcher, in correspondence with the second framing code-detection output.

Abstract: A sync apparatus for an image multiplex transmission system includes a first means for determining a fetch phase of each teletext signal packet, and a second means for re-determining the fetch phase when the actual phase of the teletext signal packet satisfies a predetermined condition. In this sync apparatus, when synchronization of the teletext signal packets has discontinuity, the first means determines the packet fetch phase, and when it has continuity, the second means determines the packet fetch phase.

Abstract: The phase of a reproduction reference signal RS output from a decoder, which decodes the count value of the counter, is compared with that of an arriving horizontal synchronizing signal TH by a phase comparator. Based on this comparison result, a phase discriminating circuit discriminates whether the phase of the reproductionreference signal RS is advanced, delayed or in-phase with the arriving horizontal synchronizing signal TH. Based on this phase discrimination result, the dividing ratio setting circuit sets the dividing ratio of the counter such that the reproduction reference signal TH is pulled in with the arriving horizontal synchronizing signal TH.

Abstract: A sampling pulse generator receives a plurality of clock signals having the same frequency and phase differences. An additional signal, which may be a clock-run-in signal is also inputted to the generator. Phase relationship data are constructed and assembled and an optimum one of the clock signals is selected and outputted based on the phase data.

Abstract: A sampling pulse generator utilizes sampling clocks CLi each having a frequency which corresponds to a character data signal D to be sampled. Each phase of these clocks CLi is progressively and slightly deviated from one another. One of these clocks CLi will be in-phase with the signal D. A feedback signal P1 corresponding to one of these clocks CLi is phase-compared with a clock run-in signal CR which is used as the phase reference of signal D. If signal P1 leads signal CR in phase, the suffix "i" of CLi is incremented, while the suffix "i" is decremented if signal P1 lags in phase behind signal CR. By the change of suffix "i" of clocks CLi, the phase difference between signals P1 and CR is minimized. One of the sampling clocks CLi thus obtained is used as a sampling pulse output SP of the sampling pulse generator which is substantially in-phase with the signal CR or D.

Abstract: An apparatus for angularly positioning a rotary member such as turn table, etc. by employing two separate motors. First motor is connected to drive the rotary member in a work operation and second servo motor is connected to drive the rotary member in a servo angular positioning movement. A power transmission mechanism is connected with the first motor to rotate the rotary member in the work operation and a coupling mechanism including a clutch therein is connected with the second motor to rotate the rotary member in the servo movement. A first detector is provided to detect a predetermined angular reference position of the clutch and a second detector is disposed to detect a predetermined reference position of the rotary member. Upon detection of the predetermined reference position of the rotary member, a locking device is actuated to stop the rotary member at the predetermined reference position and then the clutch is brought into engagement.