Pub Date : 1961-07-01DOI: 10.1109/TBTR2.1961.4503154
R. N. Rhodes, W. Dietz
Impulse noise interference, such as may be caused by sparking electric motors or automobile ignition systems, can interfere with the performance of a television receiver in the following principal ways: First, the impulses appear directly in the picture; second, the synchronization separator input circuit may charge up to such an extent that the picture loses synchronization; third, the impulses may provide false information to the AGC system thereby causing a sharp reduction receiver gain. Of the three, the latter two effects are by far the more serious. Consequently, noise ``suicide'' or noise inverter circuits, for the protection of the sync separator and AGC circuits have been widely used.
{"title":"An Efficient Noise Immune Sync and AGC Circuit for Television Receivers","authors":"R. N. Rhodes, W. Dietz","doi":"10.1109/TBTR2.1961.4503154","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503154","url":null,"abstract":"Impulse noise interference, such as may be caused by sparking electric motors or automobile ignition systems, can interfere with the performance of a television receiver in the following principal ways: First, the impulses appear directly in the picture; second, the synchronization separator input circuit may charge up to such an extent that the picture loses synchronization; third, the impulses may provide false information to the AGC system thereby causing a sharp reduction receiver gain. Of the three, the latter two effects are by far the more serious. Consequently, noise ``suicide'' or noise inverter circuits, for the protection of the sync separator and AGC circuits have been widely used.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122548135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-04-01DOI: 10.1109/TBTR2.1961.4503138
H. W. Claypool
The current trend in cathode-ray tube designs for use in modern TV receivers seem to fall into two categories: (1) More rectangular or ``squared off'' faceplates in order to provide more viewing area for a given aspect ratio. (2) Increased deflection angles so that the overall length of the CRT may be reduced for a given deflection angle. This is necessary for the popular ``slimline'' type of cabinetry.
{"title":"Horizontal Scan Non-Linearity in Television Receivers and the Saturable Reactor","authors":"H. W. Claypool","doi":"10.1109/TBTR2.1961.4503138","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503138","url":null,"abstract":"The current trend in cathode-ray tube designs for use in modern TV receivers seem to fall into two categories: (1) More rectangular or ``squared off'' faceplates in order to provide more viewing area for a given aspect ratio. (2) Increased deflection angles so that the overall length of the CRT may be reduced for a given deflection angle. This is necessary for the popular ``slimline'' type of cabinetry.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125369021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-04-01DOI: 10.1109/TBTR2.1961.4503140
J. Pietrolewicz
A Foster-Seeley discriminator is used to detect the FM or PM information in a stereo signal. It is desired to design the detector for optimum sensitivity and linearity without excessive sacrifice of gain in the last I-F stage.
{"title":"Network Design Analysis for Stereo Discriminators","authors":"J. Pietrolewicz","doi":"10.1109/TBTR2.1961.4503140","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503140","url":null,"abstract":"A Foster-Seeley discriminator is used to detect the FM or PM information in a stereo signal. It is desired to design the detector for optimum sensitivity and linearity without excessive sacrifice of gain in the last I-F stage.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130310141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-04-01DOI: 10.1109/TBTR2.1961.4503136
T. F. Jones
The future excellence of our educational system will depend largely upon the extent to which the capabilities of modern technology are exploited. TV in particular promises to play an important role by solving many problems in elementary, secondary, and higher education. MPATI, a large scale educational experiment involving a TV transmitter in an aircraft, is beginning operations this spring.
{"title":"The Challenges of TV in Education","authors":"T. F. Jones","doi":"10.1109/TBTR2.1961.4503136","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503136","url":null,"abstract":"The future excellence of our educational system will depend largely upon the extent to which the capabilities of modern technology are exploited. TV in particular promises to play an important role by solving many problems in elementary, secondary, and higher education. MPATI, a large scale educational experiment involving a TV transmitter in an aircraft, is beginning operations this spring.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114996680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-04-01DOI: 10.1109/TBTR2.1961.4503137
W. B. Swift
During the first semester of 1960-61 at the University of Wisconsin an experiment in education by TV has been conducted by the University in co-operation with Wisconsin industries. The occasion for this particular experiment was that travel between Milwaukee and Madison by the E.E. staff for the E.E. Department's part-time graduate program in Milwaukee has grown to be so burdensome that the Department has been reevaluating the program in terms of effort expended and results obtained. This reevaluation led to general dissatisfaction with the educational validity of graduate courses run once a week for a period of 2-1/ 2 hours in the evening. A first attempt to improve the program involved beginning the session at 4:30 P.M. (instead of 7:20 P.M. which had been the starting time). This change brought some improvement, but feeling remained general that performance was still inadequate.
{"title":"TV is feasible for Regular Graduate Courses","authors":"W. B. Swift","doi":"10.1109/TBTR2.1961.4503137","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503137","url":null,"abstract":"During the first semester of 1960-61 at the University of Wisconsin an experiment in education by TV has been conducted by the University in co-operation with Wisconsin industries. The occasion for this particular experiment was that travel between Milwaukee and Madison by the E.E. staff for the E.E. Department's part-time graduate program in Milwaukee has grown to be so burdensome that the Department has been reevaluating the program in terms of effort expended and results obtained. This reevaluation led to general dissatisfaction with the educational validity of graduate courses run once a week for a period of 2-1/ 2 hours in the evening. A first attempt to improve the program involved beginning the session at 4:30 P.M. (instead of 7:20 P.M. which had been the starting time). This change brought some improvement, but feeling remained general that performance was still inadequate.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115489766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-04-01DOI: 10.1109/TBTR2.1961.4503141
C. Burckhardt, M. Strutt
Since the quality of E. H. Land's two-color pictures has been subject to discussion, two groups of students were asked to judge the quality of Land's pictures. The preparation of the slides and the experimental setup is described. The results show the inferiority of E. H. Land's system in its actual form to ordinary tricolor projection. From the results it appears that the mechanism of color transformation works well with most people tested, but that the lack of information contained in the slide photographed through the blue filter is considered serious. An interesting detail is that a minority of people can detect very little or no difference between the two forms of projection.
由于e.h. Land的双色照片的质量一直受到讨论，所以我们要求两组学生来评判Land的照片的质量。介绍了载玻片的制备和实验装置。结果表明，E. H. Land系统的实际形式与普通的三色投影相比存在劣势。从结果来看，颜色转换的机制似乎对大多数被测试的人都很有效，但通过蓝色滤光片拍摄的幻灯片中所包含的信息缺乏被认为是严重的。一个有趣的细节是，少数人能察觉到两种投射形式之间的差别很小或根本没有差别。
{"title":"Experiments with E. H. Land's Two-Color Projection","authors":"C. Burckhardt, M. Strutt","doi":"10.1109/TBTR2.1961.4503141","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503141","url":null,"abstract":"Since the quality of E. H. Land's two-color pictures has been subject to discussion, two groups of students were asked to judge the quality of Land's pictures. The preparation of the slides and the experimental setup is described. The results show the inferiority of E. H. Land's system in its actual form to ordinary tricolor projection. From the results it appears that the mechanism of color transformation works well with most people tested, but that the lack of information contained in the slide photographed through the blue filter is considered serious. An interesting detail is that a minority of people can detect very little or no difference between the two forms of projection.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116335639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-04-01DOI: 10.1109/TBTR2.1961.4503139
T. Gausman
During the past year, several triode RF Amplifier tubes have been developed for Television receiver usage which have contributed significant improvement in noise figure. Typical of these are the Types 6FQ5A and 6GK5 in T-5? envelopes.
{"title":"Subminiature Tubes for VHF-UHF","authors":"T. Gausman","doi":"10.1109/TBTR2.1961.4503139","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503139","url":null,"abstract":"During the past year, several triode RF Amplifier tubes have been developed for Television receiver usage which have contributed significant improvement in noise figure. Typical of these are the Types 6FQ5A and 6GK5 in T-5? envelopes.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133496771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1960-11-01DOI: 10.1109/TBTR2.1960.4503119
Z. Wiencek
Severe requirements have to be met by the transistor as a video output amplifier. Of the few known types of video amplification - single transistor, push-pull, doubler, and phase splitter -- the phase splitter, presented in this paper, represents the advantage of consuming least power, lower voltage and power transistor ratings, higher input impedance, high voltage gain, and no phase shift problems.
{"title":"Phase Splitter Video Amplifier for Transistor TV","authors":"Z. Wiencek","doi":"10.1109/TBTR2.1960.4503119","DOIUrl":"https://doi.org/10.1109/TBTR2.1960.4503119","url":null,"abstract":"Severe requirements have to be met by the transistor as a video output amplifier. Of the few known types of video amplification - single transistor, push-pull, doubler, and phase splitter -- the phase splitter, presented in this paper, represents the advantage of consuming least power, lower voltage and power transistor ratings, higher input impedance, high voltage gain, and no phase shift problems.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1960-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130962641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1960-11-01DOI: 10.1109/TBTR2.1960.4503118
W. Schuster, C. E. Torsch
{"title":"Benefits of a New Aspect Ratio for Television","authors":"W. Schuster, C. E. Torsch","doi":"10.1109/TBTR2.1960.4503118","DOIUrl":"https://doi.org/10.1109/TBTR2.1960.4503118","url":null,"abstract":"","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1960-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128884746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1960-11-01DOI: 10.1109/TBTR2.1960.4503126
R. Ahrons
{"title":"Factors in the Circuit Operation of Transistorized Horizontal Deflection","authors":"R. Ahrons","doi":"10.1109/TBTR2.1960.4503126","DOIUrl":"https://doi.org/10.1109/TBTR2.1960.4503126","url":null,"abstract":"","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1960-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132653956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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