## 6 Conclusions  
This study was conducted to analyze and find solutions to the difficulties experienced by DHH people in viewing public TV broadcasts alongside non-disabled people. The process of discovering and resolving these problems was the starting point for understanding how DHH individuals communicate information. Through research and experimentation, three important considerations have been identified from this study. The first is the importance of subtitles. Contrary to the assumptions of non-disabled people that DHH people do not see subtitles but resort only to sign language, they are watching subtitles and sign language together, and the subtitles can also serve as an opportunity for DHH people to learn. This is a problem that DHH people experience because the language system of sign language is different from that of Hangeul. This also indicates that providing subtitles can serve as an opportunity for DHH people to understand the language system of non-disabled people.  
Second, sign language can be understood accurately when a viewer looks at the hand shapes and facial expressions of the performer together due to the linguistic limitations of sign language, which conveys meaning only by hands. Third, DHH participants find the background of the sign language interpreter uncomfortable. The investigator (and as a designer) assumed that distinguishing the sign language interpreter by using a background would increase visibility from the screen, but DHH participants felt that the interpreter is confined to a small space when there is a background. Some also responded that the background color made their eyes tired, thereby interfering with watching sign language. Contrary to the general conception that there would be no problem for DHH people in viewing TV broadcasts simply by placing a sign language interpreter on the screen, the results of this study found that a more delicate screen layout design is necessary for DHH people.  
It is expected that this study will serve as a helpful guide in providing better sign language services for TV broadcasts that can be conveniently viewed by both DHH people and non-disabled people. However, the experiments were conducted only on DHH people in this study. Therefore, in the future study, it is necessary to analyze the preference and satisfaction of non-disabled people who watch sign language services for TV broadcasts as well. To that end, the scope of this study should be further expanded to find ideal TV news layout designs that can be enjoyed both by DHH people and non-disabled people. Additionally, many other factors, e.g., background with illumination variations or variations of the sign interpreter in age and sex, could be investigated as a part of the future work to find a better design for TV broadcasts.  
Conceptualization, J.H.Y. and J.-H.H.; Formal analysis, Y-G.N. and S.O.; Methodology, J.H.Y. and S.K.; Software, Y-G.N.; Supervision, J.-H.H.; Validation, S.K. and S.O.; Writing--original draft, J.H.Y. and S.K.; Writing--review & editing, J.H.Y. and J.-H.H. All authors have read and agreed to the published version of the manuscript.  
Figure 25: Proposed layout design of information delivery components for weather forecasts.  
**Funding:** This research was supported the National Research Foundation of Korea (NRF) funded by the MSIT (2021R1A4A1030075).  
**Institutional Review Board Statement:** Not applicable.  
**Informed Consent Statement:** Not applicable.  
**Conflicts of Interest:** The authors declare no conflict of interest.