Pub Date : 1980-04-01DOI: 10.1109/TCATV.1980.285815
Prospective authors are requested to submit new, unpublished manuscripts for inclusion in the upcoming conference described in this call for papers.
潜在作者被要求提交新的、未发表的手稿，以纳入本论文征集中描述的即将召开的会议。
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Pub Date : 1980-04-01DOI: 10.1109/TCATV.1980.285803
Provides a listing of current committee members and society officers.
提供现任委员会成员和协会官员的名单。
{"title":"IEEE Broadcast, Cable and Consumer Electronics Society","authors":"","doi":"10.1109/TCATV.1980.285803","DOIUrl":"https://doi.org/10.1109/TCATV.1980.285803","url":null,"abstract":"Provides a listing of current committee members and society officers.","PeriodicalId":100638,"journal":{"name":"IEEE Transactions on Cable Television","volume":"CATV-5 2","pages":"c2-85-h"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TCATV.1980.285803","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68036322","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 : 1980-04-01DOI: 10.1109/TCATV.1980.285808
Anand Kumar
Broadband transmission and distribution facilities are finally coming into commercial use as the privacy and security aspects as well as the cost effectiveness of in-house local networks are beginning to be appreciated. The local networks encompass a wide variety of service offerings that include various types of data transmission systems, monitoring and control systems, and video systems. It is expected that the much talked about integrated video teleconferencing capabilities will become a commercial success with the help of the enhanced transmission medium--namely fiber optics. This medium provides a commercial system provider with a flexible, reliable and a high growth capacity facility that not only accommodates traditional operations but adds value by providing new revenue sources. Fiber optics development, which is significantly supported by defense related R & D funds, is viewed from the CATV perspective by organizations such as Times Fiber Communications who bridge the special marketplace of intra busi-ness teleconferencing and the new technology. It is the intention of Times Fiber to develop components, methods and practices that are in conformance with the current CATV industry practices so that an orderly transition to the use of a new transmission technology could be effected in a painless way. This presentation is an attempt to look at the development of one commercially attractive service offering that a present CATV operation could offer over a fiber optics trunk.
{"title":"Fiber Optics Mediated Teleconferencing","authors":"Anand Kumar","doi":"10.1109/TCATV.1980.285808","DOIUrl":"https://doi.org/10.1109/TCATV.1980.285808","url":null,"abstract":"Broadband transmission and distribution facilities are finally coming into commercial use as the privacy and security aspects as well as the cost effectiveness of in-house local networks are beginning to be appreciated. The local networks encompass a wide variety of service offerings that include various types of data transmission systems, monitoring and control systems, and video systems. It is expected that the much talked about integrated video teleconferencing capabilities will become a commercial success with the help of the enhanced transmission medium--namely fiber optics. This medium provides a commercial system provider with a flexible, reliable and a high growth capacity facility that not only accommodates traditional operations but adds value by providing new revenue sources. Fiber optics development, which is significantly supported by defense related R & D funds, is viewed from the CATV perspective by organizations such as Times Fiber Communications who bridge the special marketplace of intra busi-ness teleconferencing and the new technology. It is the intention of Times Fiber to develop components, methods and practices that are in conformance with the current CATV industry practices so that an orderly transition to the use of a new transmission technology could be effected in a painless way. This presentation is an attempt to look at the development of one commercially attractive service offering that a present CATV operation could offer over a fiber optics trunk.","PeriodicalId":100638,"journal":{"name":"IEEE Transactions on Cable Television","volume":"CATV-5 2","pages":"60-64"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TCATV.1980.285808","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68036328","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 : 1980-04-01DOI: 10.1109/TCATV.1980.285807
A. C. Deichmiller
Developments in transmitter/receiver design and signal conditioning are described. Also, included is a discussion of the operating experience and retrofit update of a 12 channel, eight kilometer fiber optic super trunk. A unique feature of the system described is that only one repeater location is employed in contrast with a conventional cable TV system which would require 12 repeaters to cover the same distance.
{"title":"Progress in Fiber Optics Transmission Systems for Cable Television","authors":"A. C. Deichmiller","doi":"10.1109/TCATV.1980.285807","DOIUrl":"https://doi.org/10.1109/TCATV.1980.285807","url":null,"abstract":"Developments in transmitter/receiver design and signal conditioning are described. Also, included is a discussion of the operating experience and retrofit update of a 12 channel, eight kilometer fiber optic super trunk. A unique feature of the system described is that only one repeater location is employed in contrast with a conventional cable TV system which would require 12 repeaters to cover the same distance.","PeriodicalId":100638,"journal":{"name":"IEEE Transactions on Cable Television","volume":"CATV-5 2","pages":"50-59"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TCATV.1980.285807","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68036327","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 : 1980-04-01DOI: 10.1109/TCATV.1980.285805
Donald Z. Dworkin;Kenneth Brubaker
This article analyzes the performance of a 2-way supertrunk, 8.2 miles long, carrying 13 TV channels and a full complement of FM stations by means of FM modulation from a headend site to the system hub. Theoretical and actual performance are compared. Predicted group delay due to diplex filters in the amplifiers is compared to the measured delay before and after a simple correction.
{"title":"The Video FM Supertrunk in Altoona, PA","authors":"Donald Z. Dworkin;Kenneth Brubaker","doi":"10.1109/TCATV.1980.285805","DOIUrl":"https://doi.org/10.1109/TCATV.1980.285805","url":null,"abstract":"This article analyzes the performance of a 2-way supertrunk, 8.2 miles long, carrying 13 TV channels and a full complement of FM stations by means of FM modulation from a headend site to the system hub. Theoretical and actual performance are compared. Predicted group delay due to diplex filters in the amplifiers is compared to the measured delay before and after a simple correction.","PeriodicalId":100638,"journal":{"name":"IEEE Transactions on Cable Television","volume":"CATV-5 2","pages":"30-44"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TCATV.1980.285805","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68036325","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 : 1980-04-01DOI: 10.1109/TCATV.1980.285810
A. Prochazka;R. Neumann
The design of a wideband feedforward amplifier in the frequency range 40-300 MHz is described. It is shown that the technology is now available to push the output level over 1 volt for a 12 channel NCTA crossmodulation ratio of -60 dB, or over 1/2 volt for a 35 channel NCTA crossmodulation ratio of -60 dB. The triple beat and second order distortion are typically -80 dB down at the output level of 1 volt. This ultralinear feedforward amplifier is thus an immediate substitute for two distribution amplifiers of conventional design.
{"title":"Design of a Wideband Feedforward Distribution Amplifier","authors":"A. Prochazka;R. Neumann","doi":"10.1109/TCATV.1980.285810","DOIUrl":"https://doi.org/10.1109/TCATV.1980.285810","url":null,"abstract":"The design of a wideband feedforward amplifier in the frequency range 40-300 MHz is described. It is shown that the technology is now available to push the output level over 1 volt for a 12 channel NCTA crossmodulation ratio of -60 dB, or over 1/2 volt for a 35 channel NCTA crossmodulation ratio of -60 dB. The triple beat and second order distortion are typically -80 dB down at the output level of 1 volt. This ultralinear feedforward amplifier is thus an immediate substitute for two distribution amplifiers of conventional design.","PeriodicalId":100638,"journal":{"name":"IEEE Transactions on Cable Television","volume":"CATV-5 2","pages":"72-79"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TCATV.1980.285810","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68037541","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 : 1980-04-01DOI: 10.1109/TCATV.1980.285813
Advertisement, IEEE.
广告，IEEE。
{"title":"Be a part","authors":"","doi":"10.1109/TCATV.1980.285813","DOIUrl":"https://doi.org/10.1109/TCATV.1980.285813","url":null,"abstract":"Advertisement, IEEE.","PeriodicalId":100638,"journal":{"name":"IEEE Transactions on Cable Television","volume":"CATV-5 2","pages":"85b-85c"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TCATV.1980.285813","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68037543","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 : 1980-01-01DOI: 10.1109/TCATV.1980.285831
Archer S. Taylor
The cable television industry (CATV) has experienced the unpleasant consequences of premature application of new technological developments. Expanded channel capacity by means of increased bandwidth is now being promised in many major market franchise proposals. There is no reason to suggest that 400 MHz systems carrying up to 54 channel will not eventually work; but there is good reason to expect unanticipated inconvenient and costly technical and operational problems with new equipment that has never been field tested with 50 or more channels under actual operating conditions. The "horsepower race" toward larger and larger channel carriage capability should be replaced with sophisticated efforts to improve the efficiency of utilization of existing capacity, the technical quality of the signals carried, and the content of the programs transmitted.
{"title":"The Hidden Costs of 400 MHz","authors":"Archer S. Taylor","doi":"10.1109/TCATV.1980.285831","DOIUrl":"https://doi.org/10.1109/TCATV.1980.285831","url":null,"abstract":"The cable television industry (CATV) has experienced the unpleasant consequences of premature application of new technological developments. Expanded channel capacity by means of increased bandwidth is now being promised in many major market franchise proposals. There is no reason to suggest that 400 MHz systems carrying up to 54 channel will not eventually work; but there is good reason to expect unanticipated inconvenient and costly technical and operational problems with new equipment that has never been field tested with 50 or more channels under actual operating conditions. The \"horsepower race\" toward larger and larger channel carriage capability should be replaced with sophisticated efforts to improve the efficiency of utilization of existing capacity, the technical quality of the signals carried, and the content of the programs transmitted.","PeriodicalId":100638,"journal":{"name":"IEEE Transactions on Cable Television","volume":"CATV-5 1","pages":"18-22"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TCATV.1980.285831","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68002110","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 : 1980-01-01DOI: 10.1109/TCATV.1980.285830
I. Switzer;P. Eng.
The need for extended bandwidth in cable communications systems is obvious. The rapid growth of cable systems in the U.S.A. is encouraging the proliferation of program services for cable distribution. The tree structured broad-band nature of cable systems means that capacity must be provided for all of the service to be distributed irrespective of relative popularity. Cable losses follow a square root of frequency law which makes bandwidth extension attractive as a means of increasing channel capacity. Reducing the number of amplifiers in cascade and the use of coherent carrier systems makes it possible for extended bandwidth cable systems to handle the additional channel loading with no more distortion than in present 35 channel systems.
{"title":"Extended Bandwidth Cable Communications Systems","authors":"I. Switzer;P. Eng.","doi":"10.1109/TCATV.1980.285830","DOIUrl":"https://doi.org/10.1109/TCATV.1980.285830","url":null,"abstract":"The need for extended bandwidth in cable communications systems is obvious. The rapid growth of cable systems in the U.S.A. is encouraging the proliferation of program services for cable distribution. The tree structured broad-band nature of cable systems means that capacity must be provided for all of the service to be distributed irrespective of relative popularity. Cable losses follow a square root of frequency law which makes bandwidth extension attractive as a means of increasing channel capacity. Reducing the number of amplifiers in cascade and the use of coherent carrier systems makes it possible for extended bandwidth cable systems to handle the additional channel loading with no more distortion than in present 35 channel systems.","PeriodicalId":100638,"journal":{"name":"IEEE Transactions on Cable Television","volume":"CATV-5 1","pages":"10-17"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TCATV.1980.285830","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68002111","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 : 1980-01-01DOI: 10.1109/TCATV.1980.285828
Michael F. Jeffers
Many CATV systems built in the last six or seven years took advantage of the 300 MHz equipment available from suppliers to the industry, and operators planned their layouts to allow for the ultimate carriage of thirty-five television channels. The improved signal handling capability of hybrid IC's and the "quad" circuit, together with larger and more efficient coaxial cables, kept pace with this increased channel loading. Improved system layout approaches, such as hubbing - in conjunction with the use of AML for hub interconnect - were tools used by the CATV operator to deliver quality pictures to their subscribers. Few took advantage of the subjective performance benefits available from phase lock.
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