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PDF GTV4000 Data sheet ( Hoja de datos )
| Número de pieza | GTV4000 | |
| Descripción | 2Fh TV receiver | |
| Fabricantes | Philips | |
| Logotipo |  |
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APPLICATION NOTE
GTV4000
2Fh TV receiver with
TDA9321H and TDA933xH
AN98079
1 page  
Philips Semiconductors
GTV4000 2Fh TV receiver with TDA9321H and
TDA933xH
Application Note
AN98079
CONTENTS
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2. Block diagram HIP TDA9321H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3. Block diagram HOP TDA933xH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4. Block diagram of total TV receiver (vision part). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5. IPQ-MK8 and IPQ-MK9 modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.1 IPQ-MK8 module.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2 IPQ-MK9 module.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6. Functional description total receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.1 Tuner and SAW filter switching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.2 IF circuits and sound traps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.3 Video input and output signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.4 Colour decoder and comb filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.5 50Hz feature connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.6 Feature box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.7 100Hz feature connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.8 Teletext. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.9 VGA mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.10 Micro controller and N.V. memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.11 RGB and sync switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.12 Vertical deflection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.13 Horizontal drive and EW drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.14 Sound connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.15 Sound switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.16 Sound output amplifiers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7. Software description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.1 Start up procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.2 Short description of the software functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.3 Service menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.4 Abbreviations used in the service menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8. Adjustments.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.1 Main IF PLL adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.2 PIP IF PLL adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.3 Tuner AGC take over adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.4 Geometry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.5 VGA maximum frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9. Picture improvement TDA9178 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
10. Picture In Picture module with SAB9077. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
11. Lay-out from small signal part. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
12. RGB output stages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5
5 Page 
Philips Semiconductors
GTV4000 2Fh TV receiver with TDA9321H and
TDA933xH
Application Note
AN98079
5. IPQ-MK8 and IPQ-MK9 modules.
The feature box converts the normal 1Fh video signal (YUV) into a video signal (YUV) with double the line
frequency. The MK8 module is the simple and cost-effective solution; the IPQ-MK9 module is the feature box
with more features build in.
In the feature box the analog YUV input signals are converted to digital signals by an analog to digital converter.
Then the digital signal is converted to the double line frequency. For this conversion field memories are used.
With the use of the field memory also some picture improvements can be realised. After the conversion the digital
signals are converted back to analog by a D/A converter and on the output the 2Fh analog YUV signals are
available, which are fed to the TDA933xH.
5.1 IPQ-MK8 module.
The block diagram of the IPQ-MK8 module is shown in fig 4.
The MK8 module is a scan converter based on the video processing IC SAA4977 and one 2M9 field memory.
The A/D and D/A converters are incorporated in the SAA4977.
Features of the MK8 module:
- Scan conversion from 50/60Hz to 100/120Hz A-A-B-B mode (field repetition)
- Still picture.
- Horizontal compression.
- Digital colour transient improvement.
- Luminance peaking.
When the MK8 module is equipped with the SAA4990 and a second field memory (see fig 5) the following extra
features are possible:
- Scan conversion with line flicker reduction (LFR) in A-A*-B*-B mode.
- Progressive scan.
- Frame repetition mode for movie sources.
- Advanced still picture (A-A*-A-A*).
- Noise reduction.
For more detailed information on the BESIC MK8 module see Ref1 report AN98043.
5.2 IPQ-MK9 module.
Block diagram of the IPQ MK9 module is shown in fig 6.
This module is the high end scan converter: it contains more display possibilities compared to the MK8 module.
The extra display modes are:
- Motion-vector compensated line flicker reduction.
- Motion-vector compensated field rate upconversion.
- Motion -vector compensated film processing (conversion from 25 to 50 movement phases).
- Variable vertical zoom.
For more detailed information on the IPQ-MK9 module see Ref2 report AN98041.
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet GTV4000.PDF ] | |
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