CA1121904A - System for recording, storing and reproducing television pictures - Google Patents

System for recording, storing and reproducing television pictures

Info

Publication number
CA1121904A
CA1121904A CA000270488A CA270488A CA1121904A CA 1121904 A CA1121904 A CA 1121904A CA 000270488 A CA000270488 A CA 000270488A CA 270488 A CA270488 A CA 270488A CA 1121904 A CA1121904 A CA 1121904A
Authority
CA
Canada
Prior art keywords
memory unit
camera
video tape
tape recorder
shift register
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000270488A
Other languages
French (fr)
Inventor
Lars O. Franzen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA1121904A publication Critical patent/CA1121904A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/92Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/765Interface circuits between an apparatus for recording and another apparatus
    • H04N5/77Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
    • H04N5/772Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera the recording apparatus and the television camera being placed in the same enclosure

Abstract

ABSTRACT:
A system utilizing a television camera and video tape recorder for taking pictures by the camera in com-parably short sequences to be composed on a video tape so as to form a composite picture series of material length playable on a television receiver. A memory unit having memory capacity for storing camera pictures taken during such a short sequence is detachably attached to the camera and electrically connected to it in its attached position. The memory unit is easily connectable to the video tape recorder for transfer of its picture contents to a video tape.

Description

4 Zp~ T 8~lt) STE~/J~r.

"A system for recording, storing and reproducing television pictures".
The present invention relates to a system for recording, storing and reproducing television pictures, comprising a television camera and a video tape recorder for connection to a television receiver.
Recoding of pictures with a television camera connected to a video tape recorder is being used to an increasing extent and is an alternative to a ~ilm camera. For amateur use as well as for many professional uses the alternative television camera/video tape recorder is attractive, partly because repro-duction may take place directly without intermediate development, partly because the presentation on a television picture screen is simple and easy to carry out and gives a good result from a reproduction point of view. Furthermore it is possible in the case of video tape recorders to get a comparatively long showing time, one hour or more, which gives a poss_bility to a long un-interrupted showing.
The pre-requisites for using the combination television camera/video tape recorder have increased as tele-vision cameras have grown smaller, lighter and cheaper. Also more compact video tape recorders appear on the market, but the tape reels as well as required driving means for driving the tape and the magnets heads as well as the rotating system of which they form part puts a limit of a possible reduction of the weight and volume of the set, and the necessity to carry along so a bulky apparatus at picture takings is a rather ssvere .' ~

~ 9()4 ~PHN.8570 hindrance for the alternative television camera~video tape re-corder for a more mobile use such as amateur us~ and the like.
The development of the micro-components has reached very far and makes steadily progress. Electronic memories for storing information, such as shift-registers, have now an enormous packing density so that a memory unit consisting of such micro-components may store extremely great amounts of in-formation.
The pr-esent invention is based on the under-standlng that the method commonly prevailing for picture taking to record short scenes separately, which, possibly after editing, are displayed in succession, creates together with the progress on the field of micro-components a possibility to a material improvement of the system television camera/video tape recorder, implying a substantially increased usefulness of such a system.
The system according to the invention is char-acterized in that the television camera is provided with a re-placeable memory unit detachably attached to the camera, which memory unit is connected to the output of the camera and adapted to store at picture recording the video signal delivered by the camera representing a picture sequence, which is only a minor part of the total picture series storable on a video tape in the video tape recorder, which memory unit after having been detached ~rom the camera is easily connectable to the video tape recorder for transferring its video signal contents to ths video tape recorder.

Due to the fact that the memory unit attachsd 11;~1~04 ZPl~ 70 to the camera permits a picture recording, although of a compar-ably short duration, e.g. 3-10 minutes, there is no need for maintaining connection with the video tape recorder and the equipment will be easy to move in the same way as a conventional film camera. It is easy to carry with oneself a number of such memory units which are successively replaced as they become filled up with picture information.
The invention will be more fully described with reference to the attached drawing, in which figure 1 shows a television camera with an attached cassette-shaped memory unit and figure 2 shows a simple block diagram of such a memory unit.
In figure 1 a television camera is designated 1 and an attached cassette-shaped memory unit is designated 2.
3 is a digit-display for indicating how much picture information there is stored at any moment in the memory unit 2 and it may for instance show corresponding showing-time. T~e digit-display 3 may be zeroed by means of a button 4r The electrical connection of the memory unit 2 with the camera 1 (designated 5 in figure 2) may simply be effected by means of pin- and sleeve connectors or some other kind of connecting device, which becomes operative by the memory unit 2 being put in its p~ace. The connecting device 5 may then be carried out so as to also be fixing members for the memory unit 2.
A video tape recorder 6 is suitably provided~
with a corresponding connecting device 7 for connecting the memory unit 2 to it at transfer to video tape.
In the shown embodiment of figure 2 the memory ~nit 2 has as its memory member a f`.i. digital shift register with a very high packing density of f.i. solid-state type such as a ~ )4 æ PHN.8~70 04-01~77 so-called bubble memory or a CCD-memory (charge coupled device).
The shift register is designated 8 in figure 2.
In an analog/digital converter 9 the signal coming from the camera 1 is in a manner known per se sampled for converting the same to a sufficiently representative digital signal whicl-l is supplied to the input of the shift register 8.
At the transfer to the video tape recorder 6 the digital signa1 from the shift register 8 is re-converted into an analog signal in a digital/analog converter 10. A clock pulse generator 11 is arranged to control the analog/digital converter 9, the digital/
analog converter 10 and the shift register 8, so that the digital bit combinations are continuously advanced in the shift register 8 at an incoming video-signal f`rom the television camera 1 for storing these combinations and at the information transfer from the shift register ~ to the video tape recorder 6.
The signal processing is well known ~ se.
The clock pulse generator 11 may, as indicated in figure 2, be supplied with video signals from the camera 1 in order to be synchronized with the synchronization pulses of the video signal.
At the information transfer, when the memory unit 2 is connected to the video tape recorder 6, the clock pulse generator 11 may be synch onized from the tape recorder 6.
The signal contents in each stage of the shift register 8 corresponds to a picture element at recording as well as display, which is sufficiently small to give a good resolution.

It is of course important to be able to de-ter~ine at any moment to which extent the capacity of the memory unit 2 has been occupied. For this purpose there is a counter 12 P~IN.8~7C
0l-~-01-77 connected with the clock pulse generator 11, whicll counter after restoration to Y.erO at the beginning of the recording counts the number of clock pulses in a suitable pace, so that a digit display 13 shows on a proper scale the degree of oc-cupation of the shift register 8.
~ he clock pulse counter 12 is in figure 2 shown to be connected on one side to the input and on the other side to the output of the memory unit 2. This ai.ms at indica-t-ing that the counter 12 may be controlled in dependance of the connection to either the camera 1 or to the video tape recorder 6 so that it at recoding with the camera 1 is advanced in the forward direction, while it at transfer to the video tape re-corder 6 is stepped in backward direction, so that zero indic-ation on the digit display 13 indicates that the entire inform-ation contents of the memory unit 2 has been transferred to the "t;Jco W vifc~ tape recorder 6.
It is preferable that the clock pulse counter 12automatically interrupts the information advancement in the shift register 8 when it reaches a position corresponding to full or nearly full condition cf the shift register 8. This is i.ndicated in figure 2 with ~e conductor 14.
As a rule the entire capacity of the memory unit 2 is not utilized and the shift register 8 is thus mostly filled to a varying extent only. It is of course desirable that the transfer of the contents of the memory unit 2 into the tape recorder 6 starts immediately or in any case nearly immediately when the memory unit 2 is connected to the video tape recorder 6.
This implies that the shift register 8 prefer-ably should be advances so far that its information beginning is ZJlrN.~57o ~L~Lfc 0 11 - O 1 - 7 7 iIl or close to the end position Or the shift register 8, pos-sibly with an increasecl clock f~equency, which takes place either just before the disconnection of the memory unit 2 from the television camera 1 or immediately before the start of the video tape recorder 6 when the memory unit 2 is connected to it.
In order tl-at the digit display 13 shall keep its position at such an extra stepping of the shift register 8 there is preferably an additional counter 15, which is advanced during the recording together with the counter 12, or to which the end position of the counter 12 is transferred in connection with the disconnection of the memory unit 8 from the television camera 1 or the connection to the video tape recorder 6 respec-tively. At said disconnection or conllection the counter 12 is disconnected and keeps its position independent of the additional advancement of the shift register 8 while the counter 15 is ad-vanced to the desired end position, where it brings about dis-connection of the clock pulse generator 11.
It is of course also possible to disconnect the pulse generator 11 and connect a particular stepping generator (not shown), possibly having a higher frequency, for th~ addi-tional stepping in the shift register 8.
As has been mentioned already the counter l2 may be arranged to step backwards in pace with the clock pu~ses at the transfer of the information contents of the memory unit 2 to the video tape recorder 6. When this counter 12 reaches its zero position accordingly all information stored in the memory unit 2 has been transferred. The counter 12 may then be used to cause in its zero position a suitable disconnection of the video tape record~r 6.

~PIiN.8570 0~-01-77 The memory unit 2 may of course be carried ou-t in many different ways without depar-ture from the basic inven-tive concept.
So for instance the signal processing may take pla e entirely analogously with the aid of shift registers 8 adapted hereto such as Bucket-Brigade-memories, CCD-memories.
Furthermore steps may be taken in the signal processing for reducing the required storing capacity of the memory unit 2. So for instance the signal processing may in a manner known ~ se comprise deltamodulation with associate decoding of the signals advanced through the memory unit 2. In this case there is ac-cordingly a deltamodulator and a decoder either in the memory unit 2 or in the television camera 1 or video tape recorder 6 respectively. Also other forms of signal processing may be used, in which the required amount of information is reduced by sub-stantially only indicating changes of the picture contents. It is obvious that the signal stored in the memory unit 2 and transferred to the video tape recorder 6 may comprise audio- and colour signal components.

Claims (8)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS
1. A system for recording, storing and reproducing television pictures, comprising a television camera and a video tape recorder for connection to a television rece-iver, characterized in that the television camera is pro-vided with a replaceable memory unit detachably attached to the camera, which memory unit is connected to the out-put of the camera and is adapted to store at picture recording the video signal delivered by the camera repre-senting a picture sequence, which is only a minor part of the total picture series storable on a video tape in the video tape recorder, which memory unit after having been detached from the camera is easily connectable to the video tape recorder for transferring its video signal contents to the video tape recorder.
2. A system according to Claim 1, characterized in that the memory means of the memory unit comprises a shift register and that the memory unit contains a clock pulse generator for sampling and recording the video signal in the shift register.
3. A system according to Claim 2, characterized in that the clock pulse generator is controlled by the synchr-onization pulses of the video signal at storing in the shift register.
4. A system according to Claim 3, characterized in that the clock pulse generator is controlled by the video tape recorder at transfer to the same.
5. A system according to Claim 2, 3 or 4, charac-terized in that the memory unit comprises an analog/digital converter at its input and a digital/analog converter at its output and a digital shift register as memory means.
6. A system according to Claim 1, 2 or 3, charac-terized in that the television camera or the memory unit comprises a deltamodulator for delta modulating video sig-nals, the memory unit or the video tape recorder comprising a decoder for restoration of the original video signal.
7. A system according to Claim 2,3 or 4, character-ized in that a counter is provided for controlling a digit display which counter is stepped by the clock pulse gener-ator.
8. A television camera according to Claim 1, 2 or 3, characterized in that the camera is provided with a fixing member/connecting device for the memory unit.
CA000270488A 1976-02-02 1977-01-26 System for recording, storing and reproducing television pictures Expired CA1121904A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7601092-5 1976-02-02
SE7601092A SE400690B (en) 1976-02-02 1976-02-02 SYSTEMS FOR RECEPTION, STORAGE AND REPRODUCTION OF TV IMAGES

Publications (1)

Publication Number Publication Date
CA1121904A true CA1121904A (en) 1982-04-13

Family

ID=20326873

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000270488A Expired CA1121904A (en) 1976-02-02 1977-01-26 System for recording, storing and reproducing television pictures

Country Status (11)

Country Link
JP (1) JPS52109915A (en)
AT (1) AT364393B (en)
AU (1) AU509973B2 (en)
CA (1) CA1121904A (en)
DE (1) DE2703507A1 (en)
ES (1) ES455503A1 (en)
FR (1) FR2340005A1 (en)
GB (1) GB1557608A (en)
IT (1) IT1082991B (en)
NL (1) NL7700881A (en)
SE (1) SE400690B (en)

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Publication number Priority date Publication date Assignee Title
JPS54140506A (en) * 1978-04-23 1979-10-31 Canon Inc Electro phtography storing and reproducing device
JPS5624884A (en) * 1979-08-07 1981-03-10 Sony Corp Television camera
US5260837A (en) * 1980-11-21 1993-11-09 Lemelson Jerome H Portable television camera-recorder and method for operating same
US4819101A (en) * 1980-11-21 1989-04-04 Lemelson Jerome H Portable television camera and recording unit
BE890517A (en) * 1981-09-28 1982-01-18 Staar Sa ELECTRONIC IMAGE STORAGE DEVICE
AU571864B2 (en) * 1983-03-25 1988-04-28 Sony Corporation Recording apparatus for recording a video signal obtained from high speed scanning camera
JPS59230387A (en) * 1983-06-13 1984-12-24 Sony Corp Video signal generating device
AT388819B (en) * 1984-11-08 1989-09-11 Mupid Computer Gmbh ARRANGEMENT FOR TRANSMITTING THE SIGNAL OF AN IMAGE POINT
JPH0822043B2 (en) * 1985-09-13 1996-03-04 キヤノン株式会社 Electronic camera
JPH0822042B2 (en) * 1985-09-13 1996-03-04 キヤノン株式会社 Electronic camera
JPH0822041B2 (en) * 1985-09-13 1996-03-04 キヤノン株式会社 Electronic camera
NL8503118A (en) * 1985-11-13 1987-06-01 Philips Nv SURGICAL DEVICE WITH SUB-ADD IMAGES.
JPS62150482A (en) * 1985-12-25 1987-07-04 Canon Inc Picture information processor
JPS62104281A (en) * 1986-10-17 1987-05-14 Canon Inc Picture recording device
JP2525385B2 (en) * 1986-12-18 1996-08-21 キヤノン株式会社 Imaging device
US4924541A (en) * 1987-03-10 1990-05-15 Jitsuo Inagaki Bed pad, an automobile seat pad, a pillow or a similar cushionlike item
JP2503802B2 (en) * 1991-05-13 1996-06-05 株式会社ニコン Image recording medium
JP2503807B2 (en) * 1991-07-10 1996-06-05 株式会社ニコン Electronic still camera
JP2503813B2 (en) * 1991-09-05 1996-06-05 株式会社ニコン Image recording device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL183484C (en) * 1972-06-27 1988-11-01 Texas Instruments Inc REGISTRATION AND VIEWING SYSTEM FOR ELECTRONIC ROADS AND STILL IMAGES AND ELECTRONIC PHOTOCAMERA PART OF THIS SYSTEM.

Also Published As

Publication number Publication date
IT1082991B (en) 1985-05-21
SE7601092L (en) 1977-08-03
ATA57277A (en) 1981-03-15
JPS52109915A (en) 1977-09-14
DE2703507A1 (en) 1977-08-04
AU509973B2 (en) 1980-06-05
AU2182177A (en) 1978-08-10
FR2340005A1 (en) 1977-08-26
SE400690B (en) 1978-04-03
FR2340005B1 (en) 1983-03-11
NL7700881A (en) 1977-08-04
ES455503A1 (en) 1978-01-16
AT364393B (en) 1981-10-12
GB1557608A (en) 1979-12-12

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Legal Events

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