Pub Date : 1974-11-01DOI: 10.1109/TBTR1.1974.299858
Steve Hilliker, J. Alberkrack
This paper describes a unique frequency domain tuning scheme for varactor TV tuners. The purpose of a frequency domain tuning system is to control a TV varactor tuner complement so that the proper local oscillator frequency is obtained for the channel number selected.
{"title":"A Medium-Cost PLL Varactor Tuning System Utilizing Off-The-Shelf Logic","authors":"Steve Hilliker, J. Alberkrack","doi":"10.1109/TBTR1.1974.299858","DOIUrl":"https://doi.org/10.1109/TBTR1.1974.299858","url":null,"abstract":"This paper describes a unique frequency domain tuning scheme for varactor TV tuners. The purpose of a frequency domain tuning system is to control a TV varactor tuner complement so that the proper local oscillator frequency is obtained for the channel number selected.","PeriodicalId":426905,"journal":{"name":"IEEE Transactions on Broadcast and Television Receivers","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117105570","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 : 1974-08-01DOI: 10.1109/TBTR1.1974.299847
B. Cocke
TV sound ICs incorporating dc volume controls have been available for several years but because of certain performance limitations, some TV manufacturers have chosen to bypass this portion of the circuit in spite of its cost savings.
{"title":"A 2.5-Watt Monolithic TV Sound System with Refined DC Volume Control","authors":"B. Cocke","doi":"10.1109/TBTR1.1974.299847","DOIUrl":"https://doi.org/10.1109/TBTR1.1974.299847","url":null,"abstract":"TV sound ICs incorporating dc volume controls have been available for several years but because of certain performance limitations, some TV manufacturers have chosen to bypass this portion of the circuit in spite of its cost savings.","PeriodicalId":426905,"journal":{"name":"IEEE Transactions on Broadcast and Television Receivers","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130491765","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 : 1974-08-01DOI: 10.1109/TBTR1.1974.299848
G. Kenney, A. H. Hoogendijk
The Philips VLP, Video Long Play, is a system for storage and playback of a 30 minute color television program on a plastic disc similar to a gramophone record (figure 1).
飞利浦VLP (Video Long Play)是一种存储和播放30分钟彩色电视节目的系统，它被储存在一个类似于留声机唱片的塑料光盘上(图1)。
{"title":"Signal Processing for a Video DISC System (VLP)","authors":"G. Kenney, A. H. Hoogendijk","doi":"10.1109/TBTR1.1974.299848","DOIUrl":"https://doi.org/10.1109/TBTR1.1974.299848","url":null,"abstract":"The Philips VLP, Video Long Play, is a system for storage and playback of a 30 minute color television program on a plastic disc similar to a gramophone record (figure 1).","PeriodicalId":426905,"journal":{"name":"IEEE Transactions on Broadcast and Television Receivers","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125394049","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 : 1974-08-01DOI: 10.1109/TBTR1.1974.299843
Gildo Cecchin
Since the beginning of color television, a main concern has been over the complexity of customer controls. It is difficult for the average layman and even for most engineers to properly set the contrast, brightness and chroma controls for optimum picture quality. Attempts have been made to solve this problem but costs were high and the solution left much to be desired. With the advent of integrated circuits, the solution is in hand. This paper describes a monolithic integrated circuit wherein a single adjustment controls the contrast, chroma amplitude, and brightness level of the TV receiver. This control adjusts both luminance and chrominance amplitude simultaneously. DC restoration of the video signal to black level eliminates need to readjust the brightness control. The unique DC restoration function is performed in the I.C.
{"title":"One Knob Picture Control","authors":"Gildo Cecchin","doi":"10.1109/TBTR1.1974.299843","DOIUrl":"https://doi.org/10.1109/TBTR1.1974.299843","url":null,"abstract":"Since the beginning of color television, a main concern has been over the complexity of customer controls. It is difficult for the average layman and even for most engineers to properly set the contrast, brightness and chroma controls for optimum picture quality. Attempts have been made to solve this problem but costs were high and the solution left much to be desired. With the advent of integrated circuits, the solution is in hand. This paper describes a monolithic integrated circuit wherein a single adjustment controls the contrast, chroma amplitude, and brightness level of the TV receiver. This control adjusts both luminance and chrominance amplitude simultaneously. DC restoration of the video signal to black level eliminates need to readjust the brightness control. The unique DC restoration function is performed in the I.C.","PeriodicalId":426905,"journal":{"name":"IEEE Transactions on Broadcast and Television Receivers","volume":"245 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132746401","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 : 1974-08-01DOI: 10.1109/TBTR1.1974.299850
R. England, J. Puskás, J. Collins
The integrated circuits described in this paper were designed for electronic channel selection of varactor tuned television receivers. Two circuit types, hereafter called "analog voltage switch" and "logic control circuit", perform the essential functions necessary for channel selection and indication. Circuit partitioning and design were based on voltage breakdown, supply current requirements, circuit complexity, and a desire to package both circuits in 16 pin dual-in-line plastic packages. The logic control circuit consists of an oscillator which drives an up-down counter, logic circuitry which decodes the up-down counter and provides drive signals for the analog switches in an 8 ×2 array, automatic channel setting circuit, and an AFC defeat sound muting output. This circuit accomplishes channel selection by means of remote control or push-type switches. The analog voltage switch transfers the tuning voltage from the tuning potentiometers to the tuner and drives a high voltage indicating device such as a Nixie tube or neon bulb. Each analog voltage switch contains four switches to a common point and are cascadeable so the number of channels can be expanded in multiples of four to any desired number. However, the logic control circuit was designed to control sixteen channels and thus is used in conjunction with four analog voltage switches.
{"title":"Integrated Circuit System for Channel Selection of Varactor Tuned Television Receivers","authors":"R. England, J. Puskás, J. Collins","doi":"10.1109/TBTR1.1974.299850","DOIUrl":"https://doi.org/10.1109/TBTR1.1974.299850","url":null,"abstract":"The integrated circuits described in this paper were designed for electronic channel selection of varactor tuned television receivers. Two circuit types, hereafter called \"analog voltage switch\" and \"logic control circuit\", perform the essential functions necessary for channel selection and indication. Circuit partitioning and design were based on voltage breakdown, supply current requirements, circuit complexity, and a desire to package both circuits in 16 pin dual-in-line plastic packages. The logic control circuit consists of an oscillator which drives an up-down counter, logic circuitry which decodes the up-down counter and provides drive signals for the analog switches in an 8 ×2 array, automatic channel setting circuit, and an AFC defeat sound muting output. This circuit accomplishes channel selection by means of remote control or push-type switches. The analog voltage switch transfers the tuning voltage from the tuning potentiometers to the tuner and drives a high voltage indicating device such as a Nixie tube or neon bulb. Each analog voltage switch contains four switches to a common point and are cascadeable so the number of channels can be expanded in multiples of four to any desired number. However, the logic control circuit was designed to control sixteen channels and thus is used in conjunction with four analog voltage switches.","PeriodicalId":426905,"journal":{"name":"IEEE Transactions on Broadcast and Television Receivers","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122349871","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 : 1974-08-01DOI: 10.1109/TBTR1.1974.299844
R. Walker, R. Yu
The recently introduced high voltage power transistor has found increasing usage in such applications as TV horizontal sweep circuits, switching regulators and other switching applications. A serious problem confronting the circuit designer is how to design circuitry so that transient switching losses are minimized. It is the purpose of this paper to discuss some of the aspects of device behavior and circuit design which can lead to optimum performance with respect to fast current fall at turn off.
{"title":"Horizontal Output Transistor Base Circuit Design","authors":"R. Walker, R. Yu","doi":"10.1109/TBTR1.1974.299844","DOIUrl":"https://doi.org/10.1109/TBTR1.1974.299844","url":null,"abstract":"The recently introduced high voltage power transistor has found increasing usage in such applications as TV horizontal sweep circuits, switching regulators and other switching applications. A serious problem confronting the circuit designer is how to design circuitry so that transient switching losses are minimized. It is the purpose of this paper to discuss some of the aspects of device behavior and circuit design which can lead to optimum performance with respect to fast current fall at turn off.","PeriodicalId":426905,"journal":{"name":"IEEE Transactions on Broadcast and Television Receivers","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121549271","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 : 1974-08-01DOI: 10.1109/TBTR1.1974.299849
R. Adler
This paper reports on a team effort to develop an optical player based on a thin flexible disc and the aerodynamic disc stabilizer of Thomson-CSF. The signal is encoded by a method which minimizes the effect of microscopic non-linearities within the disc surface: luminance and chroma together modulate an FM carrier of relatively high frequency. Radial tracking is achieved by a method which keeps the focused laser beam centered on the recorded track, requires no auxiliary beams and permits unusually high track density. Timing errors, caused by eccentricity and distortion of the disc, are suppressed by an electromechanical servo which is combined with the tracking servo. Improved timing error correction opens up an interesting possibility of simplifying the decoder.
{"title":"An Optical Video Disc Player for NTSC Receivers","authors":"R. Adler","doi":"10.1109/TBTR1.1974.299849","DOIUrl":"https://doi.org/10.1109/TBTR1.1974.299849","url":null,"abstract":"This paper reports on a team effort to develop an optical player based on a thin flexible disc and the aerodynamic disc stabilizer of Thomson-CSF. The signal is encoded by a method which minimizes the effect of microscopic non-linearities within the disc surface: luminance and chroma together modulate an FM carrier of relatively high frequency. Radial tracking is achieved by a method which keeps the focused laser beam centered on the recorded track, requires no auxiliary beams and permits unusually high track density. Timing errors, caused by eccentricity and distortion of the disc, are suppressed by an electromechanical servo which is combined with the tracking servo. Improved timing error correction opens up an interesting possibility of simplifying the decoder.","PeriodicalId":426905,"journal":{"name":"IEEE Transactions on Broadcast and Television Receivers","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124506205","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 : 1974-08-01DOI: 10.1109/TBTR1.1974.299842
Sangkook Choi
In this computer era, most engineers have benefitted tremendously from use of computers. This paper explains the application of computer-aided design to the remote control transmitter for the Magnavox deluxe color T. V. remote control system.
{"title":"How Computer Aided TV Remote Transmitter Desisn was Accomplished","authors":"Sangkook Choi","doi":"10.1109/TBTR1.1974.299842","DOIUrl":"https://doi.org/10.1109/TBTR1.1974.299842","url":null,"abstract":"In this computer era, most engineers have benefitted tremendously from use of computers. This paper explains the application of computer-aided design to the remote control transmitter for the Magnavox deluxe color T. V. remote control system.","PeriodicalId":426905,"journal":{"name":"IEEE Transactions on Broadcast and Television Receivers","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116359132","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 : 1974-08-01DOI: 10.1109/TBTR1.1974.299845
S. Yoshida, A. Ohkoshi, S. Miyaoka
The TRINITRON system was first produced in 1968, employing a 12V" picture tube(1). Since that time, the picture tube size range has been extended both toward larger (21 V") and smaller (5 V") sizes. TRINITRON color picture tubes have so far been designed in eight different sizes; if the variety of electron guns and deflection angles is included, a total of twelve different kinds of TRINITRON tubes have been commercially marketed. The initial tubes were designed with a 90°deflection angle; since then 114°and 122°deflection tubes have also been developed. A number of innovative techniques have been employed in the newly designed tubes in order to maintain good picture quality. In particular, attention has been paid to the manufacturing aspects.
{"title":"25-V Inch 114-Degree Trinitron Color Picture Tube and Associated New Developments","authors":"S. Yoshida, A. Ohkoshi, S. Miyaoka","doi":"10.1109/TBTR1.1974.299845","DOIUrl":"https://doi.org/10.1109/TBTR1.1974.299845","url":null,"abstract":"The TRINITRON system was first produced in 1968, employing a 12V\" picture tube(1). Since that time, the picture tube size range has been extended both toward larger (21 V\") and smaller (5 V\") sizes. TRINITRON color picture tubes have so far been designed in eight different sizes; if the variety of electron guns and deflection angles is included, a total of twelve different kinds of TRINITRON tubes have been commercially marketed. The initial tubes were designed with a 90°deflection angle; since then 114°and 122°deflection tubes have also been developed. A number of innovative techniques have been employed in the newly designed tubes in order to maintain good picture quality. In particular, attention has been paid to the manufacturing aspects.","PeriodicalId":426905,"journal":{"name":"IEEE Transactions on Broadcast and Television Receivers","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133711418","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 : 1974-08-01DOI: 10.1109/TBTR1.1974.299846
J. N. Denenberg
Many detectors of the instantaneous frequency, f1, of an FM signal exist. All of these systems (slope detector, limiter-discriminator, phase-locked loop, etc.) either process the signal after all amplitude variation has been removed or ignore any variations in amplitude. In addition, most detectors have no selectivity due to baseband signal processing. The only detector that provides some selectivity through signal processing at baseband is the phase-locked loop, PLL. However, the amount of selectivity obtainable is severely limited by stability criteria of the feedback loop.
{"title":"The Power Mean Frequency Estimator: Anotger Approach to the FM Detector","authors":"J. N. Denenberg","doi":"10.1109/TBTR1.1974.299846","DOIUrl":"https://doi.org/10.1109/TBTR1.1974.299846","url":null,"abstract":"Many detectors of the instantaneous frequency, f1, of an FM signal exist. All of these systems (slope detector, limiter-discriminator, phase-locked loop, etc.) either process the signal after all amplitude variation has been removed or ignore any variations in amplitude. In addition, most detectors have no selectivity due to baseband signal processing. The only detector that provides some selectivity through signal processing at baseband is the phase-locked loop, PLL. However, the amount of selectivity obtainable is severely limited by stability criteria of the feedback loop.","PeriodicalId":426905,"journal":{"name":"IEEE Transactions on Broadcast and Television Receivers","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126465066","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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