TV Tuner

Project description

Maintenance of an ISDB-T TV tuner for the use in Japanese vehicles

Objective / customer benefit

• Improvement of system stability


• Further development of the engineering mode functions
  
  
• Tracing concept to detect rare individual errors dependent on surroundings and transmission area
  
  
• Optimization of the use of resources for EPG data
  
  
• Optimization of code quality

Solution

• Adaptation of initialisation routines and identification of unprotected shared areas, protection of areas which aren’t thread-safe


• Development of a routine to store stack trace dumps in the case of critical OS signals
  
  
• An EPG garbage collection routine was developed to relieve existing EPG caching code due to insufficient resources
  
  
• Provision of test transmitter lists for poor or insufficient reception conditions
  
  
• Synchronization of traces between the MOST controller chip and the MPEG decoder chip in order to recognize timing problems
  
  
• Extension of the engineering mode to display the diagnostic trouble code to relieve the test department
  
  
• Development of tools to automatically check and filter traces
  
  
• Removal of all compiler warnings

Technologies used

• Embedded Linux Montavista


• MOST Bus