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公开(公告)号：DE3172304D1
公开(公告)日：1985-10-24
申请号：DE3172304
申请日：1981-05-15
Applicant: IBM DEUTSCHLAND , IBM
Inventor： STAIGER DIETER
IPC: G01R31/28 , G01R31/319 , G11C29/00 , H03K3/78
Abstract: In a method for the generation, without dead time, of pulses appearing in successive pulse intervals, with a high time resolution of the pulse intervals and of the pulses, the signals characterizing start (IIN1A, IIN2A) and end (IIN1E, IIN2E) of a pulse interval are generated under storage control by an oscillator (1) for giving coarse time raster values, and a delay circuit (3, 4) series-arranged with the oscillator (1) and with selective (7, 8) delay circuit taps (5, 6) for giving fine time raster values. The signals characterizing the pulse intervals are alternatingly applied to one of two paths (path I, path II), such that the signal characterizing the respective pulse interval start coincides with the coarse time raster predetermined by the oscillator (1). For each path, the leading and trailing edge of a pulse to be generated within a pulse interval is derived via oscillator clock-driven counters (45, 47, 46 and 48) loadable with a count, upon a specific count being reached. Series-arranged to the counters for generating the leading and trailing edges ( 45, 46 and 47, 48) a respective common delay circuit (51 and 52) is provided with storage-controlled (43, 44) selectable delay line taps (62 and 79) for a fine time raster. The pulse information generated on both paths is joined on a common line (65).
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公开(公告)号：DE2829709A1
公开(公告)日：1980-01-17
申请号：DE2829709
申请日：1978-07-06
Applicant: IBM DEUTSCHLAND
Inventor： STAIGER DIETER
Abstract: This discloses a pattern generator having a programmable product cycle timer in which a pulse train, i.e., the pattern generated, having a time raster measurable to one nanosecond can be repeated or switched from a first pulse frequency to a second pulse frequency without the usual transient switching periods between pulses. The invention accomplishes this by providing the generator with a cycle timer using a ten nanosecond clock operating in conjunction with a ten nanosecond down counter so that a pre-selected time interval, before the end of the pulse is achieved, a test is made to determine if a required condition needing a different pulse frequency exists. If such a condition does not exist the present pulse frequency is reinitiated so that at count 0 it is repeated without delay. If the required condition does exist loading of the needed pulse frequency is initiated so that upon termination of the presently existing pulse at count 0, the newly selected pulse will be introduced into the product being tested without delay. A programmable cycle timer is provided to permit the implementation of pulses which has a time raster that is other than a ten nanosecond multiple.
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公开(公告)号：DE3023699A1
公开(公告)日：1982-01-14
申请号：DE3023699
申请日：1980-06-25
Applicant: IBM DEUTSCHLAND
Inventor： STAIGER DIETER
IPC: G01R31/28 , G01R31/319 , G11C29/00 , H03K3/78 , H03K3/64
Abstract: In a method for the generation, without dead time, of pulses appearing in successive pulse intervals, with a high time resolution of the pulse intervals and of the pulses, the signals characterizing start (IIN1A, IIN2A) and end (IIN1E, IIN2E) of a pulse interval are generated under storage control by an oscillator (1) for giving coarse time raster values, and a delay circuit (3, 4) series-arranged with the oscillator (1) and with selective (7, 8) delay circuit taps (5, 6) for giving fine time raster values. The signals characterizing the pulse intervals are alternatingly applied to one of two paths (path I, path II), such that the signal characterizing the respective pulse interval start coincides with the coarse time raster predetermined by the oscillator (1). For each path, the leading and trailing edge of a pulse to be generated within a pulse interval is derived via oscillator clock-driven counters (45, 47, 46 and 48) loadable with a count, upon a specific count being reached. Series-arranged to the counters for generating the leading and trailing edges ( 45, 46 and 47, 48) a respective common delay circuit (51 and 52) is provided with storage-controlled (43, 44) selectable delay line taps (62 and 79) for a fine time raster. The pulse information generated on both paths is joined on a common line (65).
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公开(公告)号：DE2746743A1
公开(公告)日：1979-04-19
申请号：DE2746743
申请日：1977-10-18
Applicant: IBM DEUTSCHLAND
Inventor： STAIGER DIETER
Abstract: This discloses a pattern generator having a programmable product cycle timer in which a pulse train, i.e., the pattern generated can be repeated or switched from a first pulse frequency to a second pulse frequency without the usual transient switching periods between pulses. The invention accomplishes this by providing the generator with a cycle timer using a clock operating in conjunction with a down counter so that at a pre-selected time interval, before the end of the pulse is achieved, a test is made to determine if a required condition needing a different pulse frequency exists. If such a condition does not exist the present pulse frequency is reinitiated so that at count 0 it is repeated without delay. If the required condition does exist loading of the needed pulse frequency is initiated so that upon termination of the presently existing pulse at count 0, the newly selected pulse will be introduced into the product being tested without delay.
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