CN1124743C - Television intercommunication telephone system - Google Patents
Television intercommunication telephone system Download PDFInfo
- Publication number
- CN1124743C CN1124743C CN98109509A CN98109509A CN1124743C CN 1124743 C CN1124743 C CN 1124743C CN 98109509 A CN98109509 A CN 98109509A CN 98109509 A CN98109509 A CN 98109509A CN 1124743 C CN1124743 C CN 1124743C
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- 230000001915 proofreading effect Effects 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 description 12
- 238000009125 cardiac resynchronization therapy Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000005236 sound signal Effects 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
- H04N7/186—Video door telephones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/08—Telephonic communication systems specially adapted for combination with other electrical systems specially adapted for optional reception of entertainment or informative matter
- H04M11/085—Telephonic communication systems specially adapted for combination with other electrical systems specially adapted for optional reception of entertainment or informative matter using a television receiver, e.g. viewdata system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Closed-Circuit Television Systems (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Telephone Set Structure (AREA)
- Telephone Function (AREA)
Abstract
To obtain the video interphone system that is suitable for reproduction of an image with an aspect ratio of j:k of a monitor section of a master set installed indoor by converting the image into an aspect ratio of j:k of the monitor section of the master set and displaying the converted image onto the monitor section in the case that the aspect ratio of image receiving size of an image input section of a slave set is m:n. In the case that the aspect ratio of image receiving size of an image input section of a slave set is m:n, the aspect ratio of the video image is converted into j:k for a monitor section of a master set and the converted image is displayed on the monitor section. That is, in comparison with the video image whose aspect ratio is 3:4, the aspect ratio of the video image displayed on the master set television monitor section is about 1:1. As shown in figure, video image information in the center of the image is not lost and surrounding video image information is subject to horizontal linearity correction and compression, then the video information whose aspect ratio is almost equal to 3:4 is displayed. The linearity correction is controlled by inserting an sigmoid distortion correction capacitor in series with a deflection yoke in a horizontal deflection circuit output of a flat cathode ray tube so as to change a horizontal deflection speed between the image center and the image surrounding parts.
Description
Technical field
The present invention relates to adopt Flat CRTs or LCD TV two-party-line system as monitor, more particularly, relate to a kind of like this TV two-party-line system, it can be that playback the ratio of width to height is the video signal information that is formed and exported by outdoor pick-up machine receiving unit of m: n (for example about 3: 4) in the surveillance television of indoor video unit of j: k (for example about 1: 1) in the ratio of width to height.
Background technology
Fig. 6 represents an example according to the TV two-party-line system of prior art.The TV two-party-line system of Fig. 6 comprise have intercommunication telephone part 11 from the unit 1 and have the speech part 21, surveillance television part 22 and Flat CRTs 23 master unit 2, Flat CRTs 23 is the critical pieces in the surveillance television part 22.
1 is an intercommunication that has video camera from the unit, and video camera is placed on the porch in house etc. usually, and master unit 2 is to be placed on indoor device, is used to monitor speech and image by 1 visitor who obtains from the unit.
In other words, be contained in the rectangular box from unit 1, can be by intercommunication telephone part 11 and master unit 2 conversations, intercommunication telephone part 11 is made of the loud speaker and the microphone of rectangular box front.1 video camera 12 that has on intercommunication telephone part 11 tops by the shooting of 12 pairs of outdoor scenery of video camera, obtains visitor's image from the unit.
The 1 pair of vision signal that obtains by video camera part 12 and carry out frequency modulation(FM) from the unit by the audio signal that intercommunication telephone part 11 obtains, form FM signal, this FM signal of frequency multiplex obtains the frequency multiplex signal, and this multiplex signal is sent to master unit 2.By adopt with above-mentioned by from the unit 1 when master unit 2 sends the used different frequency band of frequency band, 1 frequency modulated audio signal that receives independent unit 2 from the unit, and export these audio signals from intercommunication telephone part 11.
On the other hand, master unit 2 has the speech part 21 that comprises the mobile phone that is positioned at the one side.The user can discern visitor's speech and hold mobile phone by 1 conversing and make answer from the unit.
It should be noted that in the prior art, as shown in Figure 6, the ratio of width to height of picture is that about 3: 4 Flat CRTs 23 is placed in the surveillance television part 22 of master unit 2.
In the TV two-party-line system of routine, the ratio of width to height that has only adopted a kind of picture is about 3: 4 form, and it is that image pick up equipment from integrality obtains, and image shows usually with cathode ray tube or LCD.Fig. 7 represents in the prior art by the ratio of width to height that surveillance television is reset to be an example of about 3: 4 image.
Because two side directions of the surveillance television part 22 of the master unit 2 of TV two-party-line system are long, so above-mentioned prior art has produced following problem.
Though the desired basic function of TV two-party-line system is the outdoor visitor of identification, because two side directions of picture are long, so conventional TV two-party-line system visual field in vertical direction is not enough to discern the visitor sometimes.
Specifically, outside the visual field, so just can not determine whether he is doing suspicious thing if child is too short reliably, or hold dangerous goods in the hand.
At present, adopted two kinds of methods as described below to enlarge the visual field of vertical direction.
According to first method, video camera part 12 adopts wide-angle lens to enlarge whole visual field.But the problem that this method is brought is a size of images has dwindled.
Second method is the viewpoint of coming remote control camera part 12 by motor driven.This method is very inconvenient, does not generally adopt, because the mechanical part of video camera part 12 becomes very complicated, additional control circuit increases manufacturing cost.
Summary of the invention
The present invention is just in order to solve the problems referred to above of prior art.An object of the present invention is to provide a kind of TV two-party-line system, the video camera part from the unit that this system is suitable in the monitor portion of indoor master unit resetting by outdoor is the radiofrequency signal of m: n (for example 3: 4) to the ratio of width to height of master unit output, picture the ratio of width to height of monitor portion is set at j: k (particularly 1: 1).
In order to reach this purpose, a kind of TV two-party-line system is provided according to a first aspect of the invention, comprise be positioned at the porch indoor or outdoors from the unit and be positioned at indoor master unit, has the intercommunication telephone function from the unit, and has a video camera of input image information, master unit receives audio-frequency information and the video information that sends from the unit, and in the visitor's who on seeing surveillance television, shows the image, can converse with the visitor, if wherein the ratio of width to height that receives size from the image of the image importation of unit is m: n, the ratio of width to height with the monitor portion of master unit becomes j so: k shows.
According to a second aspect of the invention, in above-mentioned TV two-party-line system, the ratio of width to height that receives size from the image of cell picture importation approximately is 3: 4, and the ratio of width to height of the surveillance television of master unit approximately is 1: 1.
According to a third aspect of the invention we, in above-mentioned TV two-party-line system, the picture signal when proofreading and correct the linearity of horizontal deflection in the surveillance television is reset, and changes the ratio of width to height of the surveillance television of master unit.
According to a forth aspect of the invention, in above-mentioned TV two-party-line system, has wide-angle lens from the video camera of unit.
Description of drawings
Below in conjunction with the accompanying drawing embodiment of the present invention will be described in more detail, in the accompanying drawing:
Fig. 1 represents an example of the image that forms on the master unit of TV two-party-line system of the present invention;
Fig. 2 is illustrated in an example that uses the image that the master unit of TV two-party-line system under the situation of wide-angle lens forms from the unit;
Fig. 3 represents another example of the image that forms on the master unit of TV two-party-line system of the present invention;
Fig. 4 represents another example of the image that forms on the master unit of TV two-party-line system of the present invention;
Fig. 5 represents another embodiment of the present invention;
Fig. 6 represents an example of the TV two-party-line system of prior art; And
Fig. 7 represents the example that the ratio of width to height is the image reset of 3: 4 surveillance television that has of prior art.
Embodiment
Fig. 1 represents an example of the image that forms on the master unit of TV two-party-line system of the present invention.With the ratio of width to height shown in Figure 7 is that 3: 4 normal image is different, and the ratio of width to height of the image on the master unit television monitoring part shown in Figure 1 is 1: 1.
As shown in Figure 1, when correctly keeping center image, by the linearity correction of horizontal direction, image is compressed on every side.Thereby obtaining with the ratio of width to height is 3: 4 the essentially identical image information of image.
Linearity correction carries out by this way, in exporting the horizontal deflecting circuit of Flat CRTs to, connect and insert a S curvature correction capacitor, by changing the horizontal deflection speed control linearity with respect to center and peripheral part with deflecting coil.
Other example of the image that forms on the master unit of Fig. 2 to 4 expression TV two-party-line system of the present invention.
The image of Fig. 2 to 4 is to adopt wide-angle lens to obtain as the optical lens from video camera part front, unit.Fig. 2 represents the image of the routine that obtains when adopting wide-angle lens, the example of the surveillance television that picture sizes have enlarged in vertical direction with respect to prior art is adopted in Fig. 3 and 4 expressions, and its ratio of width to height is 1: 1.
Under the situation of reproduced picture shown in Figure 3, the adjusted size of center image part is a normal image, but as previously mentioned, adopts wide-angle lens as being placed on from the optical lens of the video camera part front of unit, so that enlarge the visual angle.As a result, the visual field on the vertical direction that the TV two-party-line system needs enlarges, shown in the regional A among Fig. 3.In addition, the visual field on the horizontal direction has also enlarged, shown in area B and C among Fig. 3.
When reproduced picture as shown in Figure 4 the time, the central point of image shown in Figure 3 is shifted to the central point of surveillance television.The visual field has enlarged, and obtains regional A, B, C and D.These zones can be provided with on demand.
Fig. 5 represents another embodiment of the present invention.In structure shown in Figure 5, the Flat CRTs that is included in the master unit is laterally placed, and forms surveillance television.Therefore, also laterally place from the video camera of unit.In this embodiment, the image of vertical direction has extended, and the ratio of width to height is 4: 3.In addition, above-mentioned picture size has strengthened in the described direction of Fig. 3 arrow, and has adopted wide-angle lens, and therefore enlarging the visual field like that by example shown in Fig. 2 to 4 obtains image.
In the above-described embodiments, adopt Flat CRTs as monitor, but monitor of the present invention is not limited thereto, and also can adopt LCD.
Can be clear that from the above description, in the above-described embodiments, adopting the ratio of width to height is that 1: 1 Flat CRTs is as the surveillance television in the TV two-party-line system, and adopt wide-angle lens as video camera part from the unit, therefore can provide TV two-party-line system cheaply, wherein in surveillance television, be formed centrally required big image, and can see image section on every side by wider visual angle.
Enough big visual field is set in vertical direction and enough big field of view is set, these all are that the TV two-party-line system is needed, so just can discern the visitor effectively.
A kind of TV two-party-line system can be provided, the video camera part from the unit that this system is suitable in the monitor portion of indoor master unit resetting by outdoor is the radiofrequency signal of m: n (for example 3: 4) to the ratio of width to height of master unit output, picture the ratio of width to height of monitor portion is set at j: k (particularly 1: 1).
The size of the television monitoring of TV two-party-line system of the present invention part is according to approximately being that the ratio of width to height of 3: 4 is by standardization, image two side directions that form are long, usually adopt the image pick up equipment of integrality in the image pickup side, image shows that side is usually with cathode ray tube or LCD.In TV two-party-line system of the present invention, the picture size of master unit can become about 1: 1 the ratio of width to height, thereby solved effectively that the TV two-party-line system requires with the relevant problem of the outdoor visitor of identification, for example child is too short and outside the visual field, therefore can not judge reliably whether he is doing suspicious thing, or hold the such problem of dangerous goods in the hand.
Claims (3)
1. TV two-party-line system, comprise be positioned at the porch indoor or outdoors from the unit and be positioned at indoor master unit, has the intercommunication telephone function from the unit, and has a video camera of input image information, master unit receives audio-frequency information and the video information that sends from the unit, and in the visitor's who on seeing surveillance television, shows the image, can converse with the visitor
If it is m that the image of wherein described image importation from the unit receives the ratio of width to height of size: n, the ratio of width to height with the monitor portion of master unit becomes j so: k shows;
The described the ratio of width to height m that receives size from the image of cell picture importation: n approximately is 3: 4 or 4: 3, and the ratio of width to height j of the surveillance television of described master unit: k approximately is 1: 1.
2. according to the TV two-party-line system of claim 1, it is characterized in that the picture signal when proofreading and correct the linearity of horizontal deflection in the surveillance television is reset, change the ratio of width to height of the surveillance television of described master unit.
3. according to the TV two-party-line system of claim 1, it is characterized in that described video camera from the unit has wide-angle lens.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9140189A JPH10336633A (en) | 1997-05-29 | 1997-05-29 | Video interphone system |
| JP140189/1997 | 1997-05-29 | ||
| JP140189/97 | 1997-05-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1201328A CN1201328A (en) | 1998-12-09 |
| CN1124743C true CN1124743C (en) | 2003-10-15 |
Family
ID=15262987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98109509A Expired - Fee Related CN1124743C (en) | 1997-05-29 | 1998-05-29 | Television intercommunication telephone system |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH10336633A (en) |
| KR (1) | KR100495633B1 (en) |
| CN (1) | CN1124743C (en) |
| IT (1) | IT1299481B1 (en) |
| TW (1) | TW376616B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368820A (en) * | 2011-10-27 | 2012-03-07 | 东莞中山大学研究院 | Visible dialogue system based on digital television |
| JP6308673B2 (en) | 2014-10-09 | 2018-04-11 | 富士フイルム株式会社 | Image processing apparatus for electronic endoscope and electronic endoscope system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5909258A (en) * | 1995-05-31 | 1999-06-01 | Sony Corporation | Cathode ray tube display and television set having the same |
-
1997
- 1997-05-29 JP JP9140189A patent/JPH10336633A/en active Pending
-
1998
- 1998-05-25 TW TW087108087A patent/TW376616B/en active
- 1998-05-26 KR KR10-1998-0018977A patent/KR100495633B1/en not_active IP Right Cessation
- 1998-05-27 IT IT98RM000338A patent/IT1299481B1/en active IP Right Grant
- 1998-05-29 CN CN98109509A patent/CN1124743C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| TW376616B (en) | 1999-12-11 |
| KR19980087368A (en) | 1998-12-05 |
| JPH10336633A (en) | 1998-12-18 |
| CN1201328A (en) | 1998-12-09 |
| IT1299481B1 (en) | 2000-03-16 |
| ITRM980338A0 (en) | 1998-05-27 |
| ITRM980338A1 (en) | 1999-11-29 |
| KR100495633B1 (en) | 2005-09-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |